​

​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549


​
FORM 6-K


REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE MONTH OF MARCH 2025


COMMISSION FILE NUMBER 001-38976

Genmab A/S
(Exact name of Registrant as specified in its charter)

Carl Jacobsens Vej 30

2500 Valby

Denmark

+45 70 20 27 28
(Address of principal executive offices)


Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ⌧ Form 40-F ◻

This report on Form 6-K shall be deemed to be incorporated by reference in Genmab A/S’s registration statements on Form S-8 (File No. 333-232693, 333-253519, 333-262970, 333-277273 and 333-284876) and to be a part thereof from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.

​

​

​

​


SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

nthony

​

​

​

GENMAB A/S

​

​

​

​

BY:

/s/ Anthony Pagano

​

​

Name: Anthony Pagano

​

​

Title: Executive Vice President & Chief Financial Officer

​

DATE: MARCH 31, 2025

​


EXHIBIT INDEX

O

Exhibit

Description of Exhibit

​

​

99.1 

Company Announcement Dated March 31, 2025: Transactions in Connection with Share Buy-back Program 

99.1(a) 

Appendix: Share Buy-Back Program Transactions March 26 to 28, 2025 

​


Exhibit 99.1

​

Graphic

​

Transactions in connection with share buy-back program

​

Company Announcement

​

COPENHAGEN, Denmark; March 31, 2025 – Genmab A/S (Nasdaq: GMAB). On March 25, 2025, Genmab announced the initiation of a share buy-back program to repurchase up to 2.2 million shares to reduce capital and to honor our commitments under the Restricted Stock Unit program. The share buy-back program is expected to be completed no later than July 10, 2025.

​

The following transactions were executed under the program from March 26 to March 28, 2025:

​

Trading Platform

No. of shares

Average price (DKK)

Total value (DKK)

March 26, 2025

XCSE

45,467

1,357.43

​

​

BCXE

21,311

1,357.41

​

​

AQEU

4,148

1,359.16

​

​

TQEX

4,174

1,356.43

​

​

Total

75,100

1,357.47

101,945,764.19

March 27, 2025

XCSE

48,249

1,380.52

​

BCXE

23,000

1,380.11

​

​

AQEU

4,357

1,382.59

​

​

TQEX

4,472

1,378.49

​

​

Total

80,078

1,380.40

110,539,671.20

March 28, 2025

XCSE

46,924

1,371.40

​

​

BCXE

23,961

1,371.22

​

​

AQEU

2,693

1,371.96

​

​

TQEX

4,800

1,371.78

​

​

Total

78,378

1,371.39

107,486,507.58

Total

​

233,556

​

319,971,942.97

​

​

Details of each transaction are included as an appendix to this announcement.

​

Following these transactions, Genmab holds 2,771,544 shares as treasury shares, corresponding to 4.19% of the total share capital and voting rights.

​

The share buy-back program is undertaken in accordance with Regulation (EU) No. 596/2014 (‘MAR’) and the Commission Delegated Regulation (EU) 2016/1052, also referred to as the “Safe Harbour Regulation.” Further details on the terms of the share buy-back program can be found in our company announcement no. 14 dated March 25, 2025.

​

About Genmab

Genmab is an international biotechnology company with a core purpose of guiding its unstoppable team to strive toward improving the lives of patients with innovative and differentiated antibody therapeutics. For more than 25 years, its passionate, innovative and collaborative team has invented next-generation antibody technology platforms and leveraged translational, quantitative and data sciences, resulting in a proprietary pipeline including bispecific T-cell engagers, antibody-drug conjugates, next-generation immune checkpoint modulators and effector function-enhanced antibodies. By 2030, Genmab’s vision is to transform the lives of people with cancer and other serious diseases with knock-your-socks-off (KYSO) antibody medicines®. 

​

​

​

​

​

Genmab A/S

Tel: +45 7020 2728

Company Announcement no. 15

Carl Jacobsens Vej 30

Fax: +45 7020 2729

Page 1/2

2500 Valby, Denmark

www.genmab.com

CVR no. 2102 3884

​

​

LEI Code 529900MTJPDPE4MHJ122

​


Graphic

​

Transactions in connection with share buy-back program

​

Established in 1999, Genmab is headquartered in Copenhagen, Denmark, with international presence across North America, Europe and Asia Pacific. For more information, please visit Genmab.com and follow us on LinkedIn and X.

​

Contact:
Marisol Peron, Senior Vice President, Global Communications & Corporate Affairs

T: +1 609 524 0065; E: mmp@genmab.com

​

Andrew Carlsen, Vice President, Head of Investor Relations

T: +45 3377 9558; E: acn@genmab.com

​
This Company Announcement contains forward looking statements. The words “believe,” “expect,” “anticipate,” “intend” and “plan” and similar expressions identify forward looking statements. Actual results or performance may differ materially from any future results or performance expressed or implied by such statements. The important factors that could cause our actual results or performance to differ materially include, among others, risks associated with pre-clinical and clinical development of products, uncertainties related to the outcome and conduct of clinical trials including unforeseen safety issues, uncertainties related to product manufacturing, the lack of market acceptance of our products, our inability to manage growth, the competitive environment in relation to our business area and markets, our inability to attract and retain suitably qualified personnel, the unenforceability or lack of protection of our patents and proprietary rights, our relationships with affiliated entities, changes and developments in technology which may render our products or technologies obsolete, and other factors. For a further discussion of these risks, please refer to the risk management sections in Genmab’s most recent financial reports, which are available on www.genmab.com and the risk factors included in Genmab’s most recent Annual Report on Form 20-F and other filings with the U.S. Securities and Exchange Commission (SEC), which are available at www.sec.gov. Genmab does not undertake any obligation to update or revise forward looking statements in this Company Announcement nor to confirm such statements to reflect subsequent events or circumstances after the date made or in relation to actual results, unless required by law.

​
Genmab A/S and/or its subsidiaries own the following trademarks: Genmab®; the Y-shaped Genmab logo®; Genmab in combination with the Y-shaped Genmab logo®; HuMax®; DuoBody®; HexaBody®; DuoHexaBody®, HexElect® and KYSO®.

​

​

​

​

Genmab A/S

Tel: +45 7020 2728

Company Announcement no. 15

Carl Jacobsens Vej 30

Fax: +45 7020 2729

Page 2/2

2500 Valby, Denmark

www.genmab.com

CVR no. 2102 3884

​

​

LEI Code 529900MTJPDPE4MHJ122

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

Issuer

Date

Time CET

Quantity

Price (DKK)

Venue

GENMAB A/S

26-Mar-25

9:30:18 AM

70

1337.00

XCSE

GENMAB A/S

26-Mar-25

9:30:42 AM

42

1338.00

XCSE

GENMAB A/S

26-Mar-25

9:30:42 AM

67

1338.00

CEUX

GENMAB A/S

26-Mar-25

9:32:04 AM

56

1338.50

XCSE

GENMAB A/S

26-Mar-25

9:32:04 AM

68

1339.50

XCSE

GENMAB A/S

26-Mar-25

9:32:04 AM

1

1339.50

XCSE

GENMAB A/S

26-Mar-25

9:32:04 AM

4

1338.50

XCSE

GENMAB A/S

26-Mar-25

9:32:04 AM

24

1339.00

CEUX

GENMAB A/S

26-Mar-25

9:32:04 AM

39

1338.00

CEUX

GENMAB A/S

26-Mar-25

9:32:04 AM

63

1339.00

TQEX

GENMAB A/S

26-Mar-25

9:32:04 AM

68

1338.00

TQEX

GENMAB A/S

26-Mar-25

9:32:04 AM

64

1338.00

AQEU

GENMAB A/S

26-Mar-25

9:32:04 AM

71

1339.00

AQEU

GENMAB A/S

26-Mar-25

9:34:10 AM

30

1339.00

CEUX

GENMAB A/S

26-Mar-25

9:36:02 AM

18

1340.50

CEUX

GENMAB A/S

26-Mar-25

9:36:02 AM

37

1340.50

CEUX

GENMAB A/S

26-Mar-25

9:36:02 AM

32

1340.50

AQEU

GENMAB A/S

26-Mar-25

9:36:04 AM

72

1340.00

XCSE

GENMAB A/S

26-Mar-25

9:36:04 AM

7

1340.00

TQEX

GENMAB A/S

26-Mar-25

9:36:04 AM

16

1340.00

TQEX

GENMAB A/S

26-Mar-25

9:36:06 AM

26

1339.50

CEUX

GENMAB A/S

26-Mar-25

9:36:06 AM

12

1339.50

CEUX

GENMAB A/S

26-Mar-25

9:39:00 AM

23

1339.50

AQEU

GENMAB A/S

26-Mar-25

9:39:01 AM

23

1339.00

TQEX

GENMAB A/S

26-Mar-25

9:39:11 AM

15

1338.50

XCSE

GENMAB A/S

26-Mar-25

9:39:19 AM

54

1338.50

XCSE

GENMAB A/S

26-Mar-25

9:39:32 AM

22

1338.00

CEUX

GENMAB A/S

26-Mar-25

9:39:32 AM

3

1338.00

CEUX

GENMAB A/S

26-Mar-25

9:39:33 AM

75

1338.00

XCSE

GENMAB A/S

26-Mar-25

9:39:33 AM

53

1338.50

CEUX

GENMAB A/S

26-Mar-25

9:40:16 AM

39

1337.00

XCSE

GENMAB A/S

26-Mar-25

9:40:16 AM

3

1337.00

CEUX

GENMAB A/S

26-Mar-25

9:41:21 AM

72

1337.00

XCSE

GENMAB A/S

26-Mar-25

9:41:21 AM

34

1337.00

CEUX

GENMAB A/S

26-Mar-25

9:41:24 AM

33

1336.00

CEUX

GENMAB A/S

26-Mar-25

9:41:24 AM

14

1336.00

CEUX

GENMAB A/S

26-Mar-25

9:41:24 AM

23

1336.00

TQEX

GENMAB A/S

26-Mar-25

9:42:39 AM

73

1335.50

XCSE

GENMAB A/S

26-Mar-25

9:42:39 AM

48

1334.50

XCSE

GENMAB A/S

26-Mar-25

9:42:39 AM

27

1334.50

XCSE

GENMAB A/S

26-Mar-25

9:42:39 AM

44

1335.00

CEUX

GENMAB A/S

26-Mar-25

9:43:04 AM

71

1333.50

XCSE

GENMAB A/S

26-Mar-25

9:43:04 AM

64

1333.50

CEUX

1

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

9:43:27 AM

71

1332.50

XCSE

GENMAB A/S

26-Mar-25

9:43:27 AM

49

1332.50

CEUX

GENMAB A/S

26-Mar-25

9:43:29 AM

1

1331.50

XCSE

GENMAB A/S

26-Mar-25

9:44:14 AM

8

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:44:14 AM

24

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:45:04 AM

71

1334.00

CEUX

GENMAB A/S

26-Mar-25

9:46:05 AM

73

1334.00

CEUX

GENMAB A/S

26-Mar-25

9:47:01 AM

23

1334.00

XCSE

GENMAB A/S

26-Mar-25

9:47:12 AM

12

1334.00

XCSE

GENMAB A/S

26-Mar-25

9:47:12 AM

11

1334.00

XCSE

GENMAB A/S

26-Mar-25

9:47:28 AM

20

1334.00

CEUX

GENMAB A/S

26-Mar-25

9:48:01 AM

23

1335.00

XCSE

GENMAB A/S

26-Mar-25

9:48:01 AM

4

1335.00

XCSE

GENMAB A/S

26-Mar-25

9:48:01 AM

74

1334.50

XCSE

GENMAB A/S

26-Mar-25

9:48:26 AM

2

1334.50

CEUX

GENMAB A/S

26-Mar-25

9:48:50 AM

12

1334.50

XCSE

GENMAB A/S

26-Mar-25

9:48:50 AM

58

1334.50

XCSE

GENMAB A/S

26-Mar-25

9:49:03 AM

73

1334.50

XCSE

GENMAB A/S

26-Mar-25

9:49:27 AM

29

1334.50

CEUX

GENMAB A/S

26-Mar-25

9:49:28 AM

52

1334.00

CEUX

GENMAB A/S

26-Mar-25

9:49:28 AM

23

1334.00

TQEX

GENMAB A/S

26-Mar-25

9:50:01 AM

1

1333.50

XCSE

GENMAB A/S

26-Mar-25

9:50:01 AM

69

1333.50

XCSE

GENMAB A/S

26-Mar-25

9:50:02 AM

18

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:50:02 AM

42

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:50:02 AM

21

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:50:02 AM

4

1332.50

XCSE

GENMAB A/S

26-Mar-25

9:50:02 AM

42

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:50:02 AM

27

1333.00

TQEX

GENMAB A/S

26-Mar-25

9:51:32 AM

42

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:51:32 AM

30

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:51:32 AM

14

1332.50

XCSE

GENMAB A/S

26-Mar-25

9:51:32 AM

11

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:51:32 AM

73

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:51:32 AM

23

1333.00

TQEX

GENMAB A/S

26-Mar-25

9:51:49 AM

27

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:51:54 AM

6

1332.50

XCSE

GENMAB A/S

26-Mar-25

9:52:06 AM

47

1332.50

XCSE

GENMAB A/S

26-Mar-25

9:52:41 AM

37

1332.00

XCSE

GENMAB A/S

26-Mar-25

9:52:41 AM

74

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:52:41 AM

5

1331.50

TQEX

GENMAB A/S

26-Mar-25

9:52:44 AM

9

1331.50

TQEX

GENMAB A/S

26-Mar-25

9:53:03 AM

2

1331.50

TQEX

GENMAB A/S

26-Mar-25

9:53:17 AM

11

1331.50

TQEX

GENMAB A/S

26-Mar-25

9:54:27 AM

16

1332.50

CEUX

2

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

9:54:29 AM

1

1332.50

CEUX

GENMAB A/S

26-Mar-25

9:54:46 AM

42

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:54:46 AM

12

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:54:46 AM

30

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:54:46 AM

7

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:54:46 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:54:48 AM

9

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:54:48 AM

1

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:54:48 AM

31

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:54:48 AM

28

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:54:48 AM

18

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:55:15 AM

36

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:55:26 AM

2

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:56:05 AM

72

1332.00

XCSE

GENMAB A/S

26-Mar-25

9:56:05 AM

72

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:56:05 AM

29

1332.00

TQEX

GENMAB A/S

26-Mar-25

9:56:26 AM

1

1332.50

CEUX

GENMAB A/S

26-Mar-25

9:56:27 AM

1

1332.50

CEUX

GENMAB A/S

26-Mar-25

9:56:41 AM

23

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:56:41 AM

9

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:56:41 AM

6

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:56:41 AM

17

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:56:41 AM

8

1333.00

CEUX

GENMAB A/S

26-Mar-25

9:56:44 AM

58

1332.50

CEUX

GENMAB A/S

26-Mar-25

9:56:54 AM

50

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:54 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:54 AM

8

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:54 AM

74

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:54 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:54 AM

74

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:54 AM

33

1333.00

TQEX

GENMAB A/S

26-Mar-25

9:56:55 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:55 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:57 AM

53

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:57 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:57 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:57 AM

21

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:57 AM

60

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:57 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:57 AM

12

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:58 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:58 AM

74

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:58 AM

74

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:58 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:59 AM

11

1333.00

XCSE

3

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

9:56:59 AM

72

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:59 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:59 AM

74

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:56:59 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

75

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:00 AM

44

1333.00

TQEX

GENMAB A/S

26-Mar-25

9:57:01 AM

74

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:01 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:01 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:01 AM

74

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:02 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:02 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:02 AM

3

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:02 AM

20

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:04 AM

13

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:04 AM

9

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:04 AM

1

1333.00

XCSE

GENMAB A/S

26-Mar-25

9:57:07 AM

15

1332.50

CEUX

GENMAB A/S

26-Mar-25

9:57:28 AM

73

1332.00

XCSE

GENMAB A/S

26-Mar-25

9:57:28 AM

24

1332.00

TQEX

GENMAB A/S

26-Mar-25

9:57:54 AM

2

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:58:26 AM

5

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:59:14 AM

36

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:59:14 AM

27

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:59:34 AM

26

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:59:34 AM

7

1332.00

CEUX

GENMAB A/S

26-Mar-25

9:59:40 AM

25

1331.00

XCSE

GENMAB A/S

26-Mar-25

9:59:40 AM

71

1331.50

CEUX

GENMAB A/S

26-Mar-25

9:59:43 AM

47

1331.00

XCSE

GENMAB A/S

26-Mar-25

10:00:04 AM

20

1330.50

CEUX

GENMAB A/S

26-Mar-25

10:00:04 AM

14

1330.50

CEUX

GENMAB A/S

26-Mar-25

10:00:04 AM

35

1330.50

CEUX

GENMAB A/S

26-Mar-25

10:00:04 AM

10

1330.50

TQEX

GENMAB A/S

26-Mar-25

10:00:04 AM

18

1330.50

TQEX

GENMAB A/S

26-Mar-25

10:00:06 AM

2

1330.50

TQEX

GENMAB A/S

26-Mar-25

10:00:18 AM

71

1329.50

XCSE

GENMAB A/S

26-Mar-25

10:01:22 AM

39

1331.00

XCSE

GENMAB A/S

26-Mar-25

10:01:23 AM

42

1331.00

XCSE

GENMAB A/S

26-Mar-25

10:01:23 AM

8

1331.00

XCSE

4

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

10:01:23 AM

8

1331.00

XCSE

GENMAB A/S

26-Mar-25

10:02:00 AM

4

1331.00

XCSE

GENMAB A/S

26-Mar-25

10:02:00 AM

42

1331.00

XCSE

GENMAB A/S

26-Mar-25

10:02:11 AM

23

1331.00

XCSE

GENMAB A/S

26-Mar-25

10:02:34 AM

72

1330.50

XCSE

GENMAB A/S

26-Mar-25

10:02:34 AM

71

1330.50

CEUX

GENMAB A/S

26-Mar-25

10:02:34 AM

33

1330.50

TQEX

GENMAB A/S

26-Mar-25

10:02:55 AM

43

1329.50

CEUX

GENMAB A/S

26-Mar-25

10:02:55 AM

28

1329.50

CEUX

GENMAB A/S

26-Mar-25

10:02:58 AM

10

1329.50

XCSE

GENMAB A/S

26-Mar-25

10:02:58 AM

59

1329.50

XCSE

GENMAB A/S

26-Mar-25

10:02:58 AM

23

1329.50

TQEX

GENMAB A/S

26-Mar-25

10:03:45 AM

34

1329.00

XCSE

GENMAB A/S

26-Mar-25

10:03:45 AM

8

1329.00

XCSE

GENMAB A/S

26-Mar-25

10:03:45 AM

28

1329.00

XCSE

GENMAB A/S

26-Mar-25

10:03:45 AM

24

1328.50

CEUX

GENMAB A/S

26-Mar-25

10:03:45 AM

50

1328.50

CEUX

GENMAB A/S

26-Mar-25

10:04:21 AM

66

1328.50

CEUX

GENMAB A/S

26-Mar-25

10:04:46 AM

71

1328.00

XCSE

GENMAB A/S

26-Mar-25

10:04:50 AM

23

1328.00

XCSE

GENMAB A/S

26-Mar-25

10:04:50 AM

42

1328.00

XCSE

GENMAB A/S

26-Mar-25

10:04:50 AM

4

1328.00

XCSE

GENMAB A/S

26-Mar-25

10:04:50 AM

25

1328.00

XCSE

GENMAB A/S

26-Mar-25

10:05:29 AM

70

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:29 AM

21

1330.00

CEUX

GENMAB A/S

26-Mar-25

10:05:29 AM

18

1330.00

AQEU

GENMAB A/S

26-Mar-25

10:05:30 AM

58

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

39

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

11

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

12

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

42

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

1

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

12

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

13

1330.00

XCSE

GENMAB A/S

26-Mar-25

10:05:30 AM

51

1330.00

CEUX

GENMAB A/S

26-Mar-25

10:05:30 AM

25

1330.00

TQEX

GENMAB A/S

26-Mar-25

10:05:30 AM

7

1330.00

AQEU

GENMAB A/S

26-Mar-25

10:05:53 AM

75

1329.00

XCSE

GENMAB A/S

26-Mar-25

10:05:53 AM

74

1329.00

CEUX

GENMAB A/S

26-Mar-25

10:05:53 AM

23

1329.00

AQEU

GENMAB A/S

26-Mar-25

10:11:06 AM

13

1331.50

XCSE

GENMAB A/S

26-Mar-25

10:11:12 AM

25

1331.50

XCSE

GENMAB A/S

26-Mar-25

10:11:57 AM

13

1331.50

XCSE

GENMAB A/S

26-Mar-25

10:11:57 AM

10

1331.50

XCSE

GENMAB A/S

26-Mar-25

10:11:57 AM

37

1331.50

XCSE

5

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

10:11:57 AM

42

1331.50

XCSE

GENMAB A/S

26-Mar-25

10:12:51 AM

73

1333.50

XCSE

GENMAB A/S

26-Mar-25

10:12:56 AM

15

1333.50

XCSE

GENMAB A/S

26-Mar-25

10:12:56 AM

12

1333.50

XCSE

GENMAB A/S

26-Mar-25

10:12:56 AM

19

1333.50

XCSE

GENMAB A/S

26-Mar-25

10:12:56 AM

69

1333.00

CEUX

GENMAB A/S

26-Mar-25

10:13:21 AM

5

1333.50

CEUX

GENMAB A/S

26-Mar-25

10:13:21 AM

68

1333.50

CEUX

GENMAB A/S

26-Mar-25

10:13:22 AM

10

1333.50

XCSE

GENMAB A/S

26-Mar-25

10:13:22 AM

7

1333.50

XCSE

GENMAB A/S

26-Mar-25

10:14:23 AM

27

1334.00

TQEX

GENMAB A/S

26-Mar-25

10:14:23 AM

1

1334.00

TQEX

GENMAB A/S

26-Mar-25

10:14:26 AM

3

1334.00

XCSE

GENMAB A/S

26-Mar-25

10:14:32 AM

6

1333.50

XCSE

GENMAB A/S

26-Mar-25

10:16:02 AM

10

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:02 AM

42

1334.00

XCSE

GENMAB A/S

26-Mar-25

10:16:02 AM

42

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:02 AM

75

1334.50

CEUX

GENMAB A/S

26-Mar-25

10:16:02 AM

23

1334.00

TQEX

GENMAB A/S

26-Mar-25

10:16:02 AM

39

1334.00

AQEU

GENMAB A/S

26-Mar-25

10:16:03 AM

30

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:03 AM

42

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:09 AM

42

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:09 AM

30

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:09 AM

70

1334.50

CEUX

GENMAB A/S

26-Mar-25

10:16:27 AM

30

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:27 AM

42

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:27 AM

58

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:27 AM

6

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:47 AM

42

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:47 AM

10

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:16:48 AM

27

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:17:03 AM

37

1334.00

AQEU

GENMAB A/S

26-Mar-25

10:17:29 AM

11

1335.00

TQEX

GENMAB A/S

26-Mar-25

10:17:44 AM

16

1335.00

TQEX

GENMAB A/S

26-Mar-25

10:18:06 AM

73

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:18:06 AM

72

1334.50

CEUX

GENMAB A/S

26-Mar-25

10:18:06 AM

23

1334.50

AQEU

GENMAB A/S

26-Mar-25

10:18:55 AM

23

1334.00

XCSE

GENMAB A/S

26-Mar-25

10:20:26 AM

42

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:20:26 AM

1

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:20:26 AM

2

1334.50

XCSE

GENMAB A/S

26-Mar-25

10:21:14 AM

25

1336.00

CEUX

GENMAB A/S

26-Mar-25

10:22:04 AM

73

1336.00

XCSE

GENMAB A/S

26-Mar-25

10:22:04 AM

48

1336.00

CEUX

6

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

10:22:04 AM

23

1336.00

TQEX

GENMAB A/S

26-Mar-25

10:22:04 AM

23

1336.00

AQEU

GENMAB A/S

26-Mar-25

10:22:54 AM

42

1336.00

XCSE

GENMAB A/S

26-Mar-25

10:22:54 AM

11

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:22:54 AM

41

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:22:55 AM

12

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:22:55 AM

1

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:22:55 AM

58

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:22:55 AM

12

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:22:55 AM

11

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:22:57 AM

73

1337.00

XCSE

GENMAB A/S

26-Mar-25

10:22:57 AM

20

1337.00

XCSE

GENMAB A/S

26-Mar-25

10:22:57 AM

35

1337.00

XCSE

GENMAB A/S

26-Mar-25

10:22:59 AM

24

1337.00

AQEU

GENMAB A/S

26-Mar-25

10:23:06 AM

60

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:23:06 AM

15

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:23:06 AM

25

1336.50

CEUX

GENMAB A/S

26-Mar-25

10:23:06 AM

47

1336.50

CEUX

GENMAB A/S

26-Mar-25

10:23:06 AM

9

1336.50

TQEX

GENMAB A/S

26-Mar-25

10:23:06 AM

33

1336.50

TQEX

GENMAB A/S

26-Mar-25

10:23:57 AM

69

1336.50

CEUX

GENMAB A/S

26-Mar-25

10:25:08 AM

11

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:25:08 AM

10

1336.50

XCSE

GENMAB A/S

26-Mar-25

10:25:21 AM

71

1336.00

XCSE

GENMAB A/S

26-Mar-25

10:25:21 AM

69

1335.50

CEUX

GENMAB A/S

26-Mar-25

10:25:21 AM

27

1336.00

AQEU

GENMAB A/S

26-Mar-25

10:25:23 AM

1

1336.00

AQEU

GENMAB A/S

26-Mar-25

10:25:28 AM

73

1335.00

XCSE

GENMAB A/S

26-Mar-25

10:25:28 AM

1

1336.00

AQEU

GENMAB A/S

26-Mar-25

10:26:45 AM

23

1337.00

AQEU

GENMAB A/S

26-Mar-25

10:27:10 AM

10

1337.50

XCSE

GENMAB A/S

26-Mar-25

10:27:10 AM

42

1337.50

XCSE

GENMAB A/S

26-Mar-25

10:27:10 AM

12

1337.50

XCSE

GENMAB A/S

26-Mar-25

10:27:46 AM

74

1338.50

CEUX

GENMAB A/S

26-Mar-25

10:29:07 AM

10

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:29:07 AM

30

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:29:07 AM

27

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:29:07 AM

3

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:29:07 AM

23

1338.50

AQEU

GENMAB A/S

26-Mar-25

10:30:35 AM

69

1339.50

XCSE

GENMAB A/S

26-Mar-25

10:30:35 AM

44

1339.50

CEUX

GENMAB A/S

26-Mar-25

10:30:35 AM

28

1339.50

CEUX

GENMAB A/S

26-Mar-25

10:31:01 AM

4

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:31:01 AM

30

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:31:01 AM

72

1338.50

XCSE

7

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

10:31:01 AM

18

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:31:01 AM

42

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:31:01 AM

58

1338.50

CEUX

GENMAB A/S

26-Mar-25

10:31:01 AM

41

1338.50

TQEX

GENMAB A/S

26-Mar-25

10:31:01 AM

32

1339.00

AQEU

GENMAB A/S

26-Mar-25

10:31:06 AM

18

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:31:06 AM

10

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:31:06 AM

35

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:31:26 AM

2

1338.50

XCSE

GENMAB A/S

26-Mar-25

10:32:32 AM

73

1339.50

XCSE

GENMAB A/S

26-Mar-25

10:32:32 AM

30

1339.50

XCSE

GENMAB A/S

26-Mar-25

10:32:32 AM

19

1339.50

XCSE

GENMAB A/S

26-Mar-25

10:32:32 AM

1

1339.50

XCSE

GENMAB A/S

26-Mar-25

10:32:32 AM

29

1339.50

CEUX

GENMAB A/S

26-Mar-25

10:32:32 AM

18

1339.50

CEUX

GENMAB A/S

26-Mar-25

10:32:32 AM

3

1339.50

CEUX

GENMAB A/S

26-Mar-25

10:33:11 AM

12

1340.00

XCSE

GENMAB A/S

26-Mar-25

10:33:11 AM

2

1340.00

XCSE

GENMAB A/S

26-Mar-25

10:33:23 AM

25

1340.00

XCSE

GENMAB A/S

26-Mar-25

10:34:20 AM

71

1340.00

XCSE

GENMAB A/S

26-Mar-25

10:34:20 AM

38

1340.00

CEUX

GENMAB A/S

26-Mar-25

10:34:20 AM

20

1340.00

CEUX

GENMAB A/S

26-Mar-25

10:35:03 AM

1

1340.00

XCSE

GENMAB A/S

26-Mar-25

10:35:03 AM

1

1340.00

XCSE

GENMAB A/S

26-Mar-25

10:36:14 AM

11

1340.50

XCSE

GENMAB A/S

26-Mar-25

10:36:14 AM

26

1340.50

XCSE

GENMAB A/S

26-Mar-25

10:36:14 AM

36

1340.50

XCSE

GENMAB A/S

26-Mar-25

10:36:14 AM

3

1340.50

XCSE

GENMAB A/S

26-Mar-25

10:36:14 AM

11

1340.50

XCSE

GENMAB A/S

26-Mar-25

10:37:11 AM

70

1340.00

XCSE

GENMAB A/S

26-Mar-25

10:37:11 AM

69

1340.00

CEUX

GENMAB A/S

26-Mar-25

10:38:01 AM

37

1339.50

AQEU

GENMAB A/S

26-Mar-25

10:38:01 AM

1

1339.50

AQEU

GENMAB A/S

26-Mar-25

10:38:21 AM

74

1339.50

XCSE

GENMAB A/S

26-Mar-25

10:41:26 AM

2

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:42:17 AM

71

1340.50

XCSE

GENMAB A/S

26-Mar-25

10:42:52 AM

71

1342.00

XCSE

GENMAB A/S

26-Mar-25

10:43:04 AM

10

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:43:04 AM

69

1341.50

CEUX

GENMAB A/S

26-Mar-25

10:43:04 AM

23

1341.50

TQEX

GENMAB A/S

26-Mar-25

10:43:04 AM

26

1341.50

AQEU

GENMAB A/S

26-Mar-25

10:43:11 AM

39

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:43:11 AM

25

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:43:11 AM

25

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:43:11 AM

45

1341.00

XCSE

8

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

10:43:11 AM

3

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:43:11 AM

42

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:43:11 AM

10

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:43:11 AM

42

1341.00

XCSE

GENMAB A/S

26-Mar-25

10:43:11 AM

71

1340.50

CEUX

GENMAB A/S

26-Mar-25

10:43:11 AM

31

1340.50

TQEX

GENMAB A/S

26-Mar-25

10:43:11 AM

24

1340.50

AQEU

GENMAB A/S

26-Mar-25

10:43:59 AM

37

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:43:59 AM

23

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:43:59 AM

42

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:43:59 AM

26

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:43:59 AM

12

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:43:59 AM

11

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:43:59 AM

8

1341.50

XCSE

GENMAB A/S

26-Mar-25

10:44:50 AM

75

1342.00

CEUX

GENMAB A/S

26-Mar-25

10:45:28 AM

25

1342.00

XCSE

GENMAB A/S

26-Mar-25

10:45:31 AM

19

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:31 AM

11

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:31 AM

11

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:31 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:31 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:31 AM

23

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:31 AM

11

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:41 AM

13

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:41 AM

22

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:45:56 AM

35

1343.50

XCSE

GENMAB A/S

26-Mar-25

10:45:56 AM

26

1343.50

XCSE

GENMAB A/S

26-Mar-25

10:46:22 AM

71

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:46:22 AM

71

1343.00

CEUX

GENMAB A/S

26-Mar-25

10:46:22 AM

32

1343.00

TQEX

GENMAB A/S

26-Mar-25

10:46:22 AM

24

1343.00

AQEU

GENMAB A/S

26-Mar-25

10:46:23 AM

71

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:46:23 AM

1

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:49:43 AM

26

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:49:43 AM

25

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:49:43 AM

36

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:16 AM

72

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:16 AM

32

1343.00

CEUX

GENMAB A/S

26-Mar-25

10:51:16 AM

71

1343.00

CEUX

GENMAB A/S

26-Mar-25

10:51:16 AM

25

1343.00

TQEX

GENMAB A/S

26-Mar-25

10:51:16 AM

27

1343.00

AQEU

GENMAB A/S

26-Mar-25

10:51:44 AM

23

1342.50

TQEX

GENMAB A/S

26-Mar-25

10:51:47 AM

12

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:47 AM

36

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:47 AM

14

1343.00

XCSE

9

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

10:51:47 AM

19

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:47 AM

1

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:47 AM

2

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:47 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:55 AM

3

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:55 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:55 AM

42

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:55 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:51:55 AM

27

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:52:24 AM

44

1342.00

XCSE

GENMAB A/S

26-Mar-25

10:52:24 AM

21

1342.00

CEUX

GENMAB A/S

26-Mar-25

10:52:24 AM

49

1342.00

CEUX

GENMAB A/S

26-Mar-25

10:52:24 AM

25

1342.00

AQEU

GENMAB A/S

26-Mar-25

10:54:10 AM

2

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:10 AM

27

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:10 AM

42

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:10 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:10 AM

4

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:10 AM

9

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:45 AM

19

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:45 AM

17

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:45 AM

2

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:45 AM

12

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:45 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:54:56 AM

72

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:55:58 AM

4

1343.00

CEUX

GENMAB A/S

26-Mar-25

10:55:58 AM

1

1343.00

TQEX

GENMAB A/S

26-Mar-25

10:56:02 AM

23

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:56:02 AM

14

1343.00

XCSE

GENMAB A/S

26-Mar-25

10:56:02 AM

37

1343.00

CEUX

GENMAB A/S

26-Mar-25

10:56:02 AM

34

1343.00

CEUX

GENMAB A/S

26-Mar-25

10:56:02 AM

22

1343.00

TQEX

GENMAB A/S

26-Mar-25

10:57:00 AM

23

1342.50

AQEU

GENMAB A/S

26-Mar-25

10:57:25 AM

2

1342.50

XCSE

GENMAB A/S

26-Mar-25

10:58:13 AM

72

1342.00

XCSE

GENMAB A/S

26-Mar-25

10:58:13 AM

25

1342.00

CEUX

GENMAB A/S

26-Mar-25

10:58:13 AM

49

1342.00

CEUX

GENMAB A/S

26-Mar-25

10:58:43 AM

12

1342.00

XCSE

GENMAB A/S

26-Mar-25

10:58:43 AM

23

1342.00

XCSE

GENMAB A/S

26-Mar-25

10:59:26 AM

28

1342.00

XCSE

GENMAB A/S

26-Mar-25

11:00:01 AM

19

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:01 AM

23

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:01 AM

1

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:01 AM

1

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:01 AM

42

1343.00

XCSE

10

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:00:01 AM

33

1342.50

TQEX

GENMAB A/S

26-Mar-25

11:00:02 AM

15

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:02 AM

11

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:02 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:02 AM

13

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:02 AM

1

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:02 AM

42

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:26 AM

1

1342.50

CEUX

GENMAB A/S

26-Mar-25

11:00:45 AM

12

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:45 AM

13

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:45 AM

12

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:45 AM

65

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:45 AM

12

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:45 AM

4

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:00:45 AM

75

1343.00

CEUX

GENMAB A/S

26-Mar-25

11:02:26 AM

11

1343.00

CEUX

GENMAB A/S

26-Mar-25

11:02:27 AM

47

1342.00

XCSE

GENMAB A/S

26-Mar-25

11:02:27 AM

7

1342.00

XCSE

GENMAB A/S

26-Mar-25

11:02:27 AM

3

1342.00

CEUX

GENMAB A/S

26-Mar-25

11:03:26 AM

12

1342.50

XCSE

GENMAB A/S

26-Mar-25

11:03:26 AM

2

1342.50

XCSE

GENMAB A/S

26-Mar-25

11:03:26 AM

25

1342.50

CEUX

GENMAB A/S

26-Mar-25

11:03:27 AM

1

1342.50

CEUX

GENMAB A/S

26-Mar-25

11:03:35 AM

23

1342.50

TQEX

GENMAB A/S

26-Mar-25

11:03:35 AM

3

1342.50

TQEX

GENMAB A/S

26-Mar-25

11:03:39 AM

15

1342.00

XCSE

GENMAB A/S

26-Mar-25

11:03:39 AM

4

1342.00

CEUX

GENMAB A/S

26-Mar-25

11:03:40 AM

10

1342.00

CEUX

GENMAB A/S

26-Mar-25

11:04:26 AM

1

1342.50

CEUX

GENMAB A/S

26-Mar-25

11:04:52 AM

75

1342.50

XCSE

GENMAB A/S

26-Mar-25

11:04:59 AM

28

1342.50

XCSE

GENMAB A/S

26-Mar-25

11:04:59 AM

40

1342.50

XCSE

GENMAB A/S

26-Mar-25

11:04:59 AM

12

1342.50

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

1

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

12

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

1

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

18

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

12

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

2

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

10

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:40 AM

18

1343.00

CEUX

GENMAB A/S

26-Mar-25

11:05:41 AM

38

1343.00

XCSE

GENMAB A/S

26-Mar-25

11:05:41 AM

21

1343.00

CEUX

GENMAB A/S

26-Mar-25

11:05:44 AM

11

1343.00

CEUX

GENMAB A/S

26-Mar-25

11:05:50 AM

36

1343.00

CEUX

11

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:06:04 AM

21

1343.00

CEUX

GENMAB A/S

26-Mar-25

11:06:37 AM

2

1344.50

XCSE

GENMAB A/S

26-Mar-25

11:06:42 AM

3

1344.50

TQEX

GENMAB A/S

26-Mar-25

11:06:42 AM

7

1344.50

TQEX

GENMAB A/S

26-Mar-25

11:06:42 AM

34

1344.50

TQEX

GENMAB A/S

26-Mar-25

11:08:26 AM

4

1345.00

CEUX

GENMAB A/S

26-Mar-25

11:08:44 AM

14

1346.50

AQEU

GENMAB A/S

26-Mar-25

11:08:48 AM

1

1346.50

AQEU

GENMAB A/S

26-Mar-25

11:08:48 AM

1

1346.50

AQEU

GENMAB A/S

26-Mar-25

11:08:51 AM

13

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:08:51 AM

35

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:08:51 AM

35

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:08:51 AM

59

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:09:12 AM

26

1346.50

AQEU

GENMAB A/S

26-Mar-25

11:09:25 AM

2

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:09:25 AM

1

1346.50

CEUX

GENMAB A/S

26-Mar-25

11:09:26 AM

2

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:09:26 AM

15

1346.50

CEUX

GENMAB A/S

26-Mar-25

11:10:25 AM

5

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:10:25 AM

11

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:10:25 AM

5

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:10:25 AM

23

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:10:37 AM

4

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:10:37 AM

5

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:11:03 AM

1

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:11:20 AM

22

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:11:20 AM

25

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:11:20 AM

2

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:12:55 AM

53

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:12:55 AM

41

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:12:56 AM

78

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:12:56 AM

10

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:12:56 AM

16

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:12:57 AM

9

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:12:58 AM

12

1347.50

XCSE

GENMAB A/S

26-Mar-25

11:12:58 AM

26

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:12:58 AM

26

1347.50

XCSE

GENMAB A/S

26-Mar-25

11:12:58 AM

36

1347.50

CEUX

GENMAB A/S

26-Mar-25

11:12:58 AM

23

1347.50

AQEU

GENMAB A/S

26-Mar-25

11:12:59 AM

24

1347.50

XCSE

GENMAB A/S

26-Mar-25

11:12:59 AM

12

1347.50

XCSE

GENMAB A/S

26-Mar-25

11:12:59 AM

10

1347.50

XCSE

GENMAB A/S

26-Mar-25

11:12:59 AM

22

1347.50

XCSE

GENMAB A/S

26-Mar-25

11:13:05 AM

32

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:13:05 AM

10

1347.50

XCSE

12

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:13:05 AM

10

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:13:05 AM

31

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:13:05 AM

11

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:13:05 AM

32

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:13:05 AM

42

1347.00

XCSE

GENMAB A/S

26-Mar-25

11:13:05 AM

5

1347.50

CEUX

GENMAB A/S

26-Mar-25

11:13:05 AM

36

1347.50

CEUX

GENMAB A/S

26-Mar-25

11:13:05 AM

4

1347.50

CEUX

GENMAB A/S

26-Mar-25

11:13:05 AM

7

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:13:05 AM

62

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:13:05 AM

37

1347.00

TQEX

GENMAB A/S

26-Mar-25

11:13:05 AM

2

1347.00

TQEX

GENMAB A/S

26-Mar-25

11:13:07 AM

4

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:13:07 AM

11

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:13:07 AM

4

1347.00

CEUX

GENMAB A/S

26-Mar-25

11:14:23 AM

26

1346.50

CEUX

GENMAB A/S

26-Mar-25

11:14:23 AM

39

1346.50

CEUX

GENMAB A/S

26-Mar-25

11:14:45 AM

12

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:14:45 AM

2

1346.50

XCSE

GENMAB A/S

26-Mar-25

11:16:26 AM

1

1346.50

CEUX

GENMAB A/S

26-Mar-25

11:18:27 AM

71

1348.00

XCSE

GENMAB A/S

26-Mar-25

11:18:27 AM

42

1348.50

XCSE

GENMAB A/S

26-Mar-25

11:18:27 AM

12

1348.50

XCSE

GENMAB A/S

26-Mar-25

11:18:27 AM

7

1348.50

XCSE

GENMAB A/S

26-Mar-25

11:18:27 AM

10

1348.50

XCSE

GENMAB A/S

26-Mar-25

11:18:27 AM

5

1348.50

CEUX

GENMAB A/S

26-Mar-25

11:18:27 AM

12

1348.00

CEUX

GENMAB A/S

26-Mar-25

11:18:27 AM

4

1348.50

CEUX

GENMAB A/S

26-Mar-25

11:18:27 AM

63

1348.00

CEUX

GENMAB A/S

26-Mar-25

11:18:38 AM

4

1349.00

XCSE

GENMAB A/S

26-Mar-25

11:19:00 AM

61

1348.50

XCSE

GENMAB A/S

26-Mar-25

11:19:54 AM

10

1349.50

CEUX

GENMAB A/S

26-Mar-25

11:19:54 AM

64

1349.50

CEUX

GENMAB A/S

26-Mar-25

11:19:54 AM

2

1349.50

CEUX

GENMAB A/S

26-Mar-25

11:19:54 AM

1

1349.50

CEUX

GENMAB A/S

26-Mar-25

11:19:54 AM

17

1349.50

CEUX

GENMAB A/S

26-Mar-25

11:19:58 AM

13

1350.50

CEUX

GENMAB A/S

26-Mar-25

11:19:58 AM

8

1350.50

CEUX

GENMAB A/S

26-Mar-25

11:20:01 AM

71

1350.50

XCSE

GENMAB A/S

26-Mar-25

11:21:30 AM

42

1351.00

XCSE

GENMAB A/S

26-Mar-25

11:21:30 AM

23

1351.00

CEUX

GENMAB A/S

26-Mar-25

11:21:30 AM

8

1351.00

CEUX

GENMAB A/S

26-Mar-25

11:22:34 AM

9

1351.50

CEUX

GENMAB A/S

26-Mar-25

11:22:34 AM

16

1351.50

CEUX

GENMAB A/S

26-Mar-25

11:22:34 AM

30

1351.50

CEUX

13

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:22:34 AM

1

1351.50

CEUX

GENMAB A/S

26-Mar-25

11:23:36 AM

35

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:36 AM

42

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:36 AM

8

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:36 AM

9

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:37 AM

11

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:37 AM

10

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:37 AM

15

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:37 AM

2

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:37 AM

42

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:37 AM

10

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:37 AM

12

1352.00

CEUX

GENMAB A/S

26-Mar-25

11:23:38 AM

17

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:38 AM

14

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:39 AM

12

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:39 AM

16

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:40 AM

9

1352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:40 AM

16

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:40 AM

17

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:41 AM

10

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:41 AM

11

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:42 AM

15

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:42 AM

7

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:23:42 AM

24

1,352.00

TQEX

GENMAB A/S

26-Mar-25

11:24:25 AM

36

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:24:26 AM

13

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:24:26 AM

1

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:24:26 AM

1

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:24:41 AM

36

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:25:00 AM

32

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:25:53 AM

11

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:25:53 AM

43

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:25:53 AM

1

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:25:53 AM

27

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:25:54 AM

71

1,351.00

XCSE

GENMAB A/S

26-Mar-25

11:26:00 AM

20

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:26:00 AM

17

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:26:25 AM

42

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:26:25 AM

10

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:26:26 AM

2

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:26:31 AM

11

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:26:38 AM

15

1,352.50

XCSE

GENMAB A/S

26-Mar-25

11:26:38 AM

35

1,352.50

XCSE

GENMAB A/S

26-Mar-25

11:26:38 AM

27

1,352.50

XCSE

GENMAB A/S

26-Mar-25

11:26:38 AM

2

1,352.50

XCSE

14

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:26:46 AM

36

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:26:47 AM

5

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:26:54 AM

5

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:26:54 AM

5

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:26:54 AM

12

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:27:15 AM

23

1,352.00

XCSE

GENMAB A/S

26-Mar-25

11:27:27 AM

70

1,351.00

XCSE

GENMAB A/S

26-Mar-25

11:27:27 AM

74

1,349.50

XCSE

GENMAB A/S

26-Mar-25

11:27:27 AM

70

1,351.00

CEUX

GENMAB A/S

26-Mar-25

11:27:27 AM

29

1,351.00

TQEX

GENMAB A/S

26-Mar-25

11:27:27 AM

24

1,351.00

AQEU

GENMAB A/S

26-Mar-25

11:27:31 AM

23

1,351.00

TQEX

GENMAB A/S

26-Mar-25

11:28:25 AM

72

1,350.50

XCSE

GENMAB A/S

26-Mar-25

11:28:40 AM

9

1,348.50

XCSE

GENMAB A/S

26-Mar-25

11:28:40 AM

69

1,349.50

XCSE

GENMAB A/S

26-Mar-25

11:28:40 AM

69

1,350.00

CEUX

GENMAB A/S

26-Mar-25

11:28:40 AM

28

1,350.00

TQEX

GENMAB A/S

26-Mar-25

11:28:40 AM

23

1,350.00

AQEU

GENMAB A/S

26-Mar-25

11:29:11 AM

67

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:29:11 AM

67

1,349.00

XCSE

GENMAB A/S

26-Mar-25

11:29:11 AM

1

1,348.50

CEUX

GENMAB A/S

26-Mar-25

11:29:11 AM

71

1,348.50

CEUX

GENMAB A/S

26-Mar-25

11:29:15 AM

74

1,347.50

CEUX

GENMAB A/S

26-Mar-25

11:29:15 AM

26

1,348.00

AQEU

GENMAB A/S

26-Mar-25

11:29:56 AM

75

1,347.00

XCSE

GENMAB A/S

26-Mar-25

11:30:36 AM

49

1,348.00

CEUX

GENMAB A/S

26-Mar-25

11:32:07 AM

22

1,348.00

CEUX

GENMAB A/S

26-Mar-25

11:34:05 AM

3

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:34:05 AM

37

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:34:05 AM

4

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:34:35 AM

1

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:34:35 AM

12

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:34:45 AM

12

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:34:55 AM

12

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:37:25 AM

53

1,348.50

XCSE

GENMAB A/S

26-Mar-25

11:37:25 AM

18

1,348.50

XCSE

GENMAB A/S

26-Mar-25

11:37:25 AM

2

1,348.00

XCSE

GENMAB A/S

26-Mar-25

11:37:25 AM

18

1,348.50

CEUX

GENMAB A/S

26-Mar-25

11:37:25 AM

22

1,348.50

CEUX

GENMAB A/S

26-Mar-25

11:37:25 AM

34

1,348.50

CEUX

GENMAB A/S

26-Mar-25

11:39:05 AM

17

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:39:05 AM

40

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:39:05 AM

37

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:39:19 AM

1

1,351.00

CEUX

GENMAB A/S

26-Mar-25

11:39:19 AM

10

1,351.00

CEUX

15

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:39:19 AM

58

1,351.00

CEUX

GENMAB A/S

26-Mar-25

11:39:24 AM

46

1,351.00

XCSE

GENMAB A/S

26-Mar-25

11:39:34 AM

7

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:39:35 AM

10

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:39:35 AM

18

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:40:41 AM

12

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:40:41 AM

3

1,351.50

XCSE

GENMAB A/S

26-Mar-25

11:42:25 AM

33

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:42:25 AM

16

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:42:25 AM

1

1,352.00

CEUX

GENMAB A/S

26-Mar-25

11:42:45 AM

59

1,354.50

XCSE

GENMAB A/S

26-Mar-25

11:42:45 AM

35

1,354.50

XCSE

GENMAB A/S

26-Mar-25

11:42:46 AM

47

1,354.50

XCSE

GENMAB A/S

26-Mar-25

11:43:10 AM

13

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:43:45 AM

5

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:43:45 AM

13

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:43:45 AM

5

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:44:14 AM

69

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:14 AM

25

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:14 AM

1

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:44:15 AM

48

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:15 AM

16

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:15 AM

78

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:15 AM

21

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:15 AM

25

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:15 AM

4

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:44:15 AM

4

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:44:15 AM

2

1,355.50

CEUX

GENMAB A/S

26-Mar-25

11:44:15 AM

43

1,355.00

TQEX

GENMAB A/S

26-Mar-25

11:44:16 AM

23

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:34 AM

23

1,355.00

CEUX

GENMAB A/S

26-Mar-25

11:44:35 AM

21

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:35 AM

2

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:55 AM

7

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:44:55 AM

25

1,355.00

XCSE

GENMAB A/S

26-Mar-25

11:45:13 AM

59

1,354.50

XCSE

GENMAB A/S

26-Mar-25

11:45:13 AM

13

1,354.50

XCSE

GENMAB A/S

26-Mar-25

11:45:13 AM

17

1,354.50

CEUX

GENMAB A/S

26-Mar-25

11:45:13 AM

56

1,354.50

CEUX

GENMAB A/S

26-Mar-25

11:45:13 AM

30

1,354.00

TQEX

GENMAB A/S

26-Mar-25

11:45:13 AM

32

1,354.50

AQEU

GENMAB A/S

26-Mar-25

11:45:19 AM

23

1,353.50

XCSE

GENMAB A/S

26-Mar-25

11:45:22 AM

51

1,353.50

XCSE

GENMAB A/S

26-Mar-25

11:45:22 AM

74

1,353.50

CEUX

GENMAB A/S

26-Mar-25

11:45:22 AM

4

1,354.00

TQEX

16

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:45:22 AM

32

1,353.50

AQEU

GENMAB A/S

26-Mar-25

11:48:38 AM

7

1,354.00

XCSE

GENMAB A/S

26-Mar-25

11:49:43 AM

4

1,354.50

CEUX

GENMAB A/S

26-Mar-25

11:50:14 AM

32

1,354.50

CEUX

GENMAB A/S

26-Mar-25

11:51:29 AM

3

1,356.50

CEUX

GENMAB A/S

26-Mar-25

11:51:48 AM

2

1,357.00

XCSE

GENMAB A/S

26-Mar-25

11:51:48 AM

50

1,357.00

XCSE

GENMAB A/S

26-Mar-25

11:51:48 AM

29

1,357.00

XCSE

GENMAB A/S

26-Mar-25

11:51:48 AM

72

1,356.50

CEUX

GENMAB A/S

26-Mar-25

11:51:48 AM

26

1,356.50

TQEX

GENMAB A/S

26-Mar-25

11:51:51 AM

70

1,357.00

CEUX

GENMAB A/S

26-Mar-25

11:51:51 AM

29

1,357.00

TQEX

GENMAB A/S

26-Mar-25

11:52:05 AM

15

1,357.50

XCSE

GENMAB A/S

26-Mar-25

11:52:05 AM

7

1,357.50

XCSE

GENMAB A/S

26-Mar-25

11:53:44 AM

75

1,359.00

CEUX

GENMAB A/S

26-Mar-25

11:53:45 AM

29

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:53:50 AM

50

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:53:53 AM

50

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:53:58 AM

54

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:53:58 AM

18

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:53:58 AM

23

1,359.50

TQEX

GENMAB A/S

26-Mar-25

11:54:04 AM

11

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:04 AM

10

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:04 AM

42

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:04 AM

10

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:07 AM

50

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:17 AM

70

1,361.00

CEUX

GENMAB A/S

26-Mar-25

11:54:21 AM

62

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:25 AM

37

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:55 AM

7

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:54:55 AM

2

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:55:25 AM

1

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:55:25 AM

24

1,361.00

XCSE

GENMAB A/S

26-Mar-25

11:55:43 AM

24

1,361.50

XCSE

GENMAB A/S

26-Mar-25

11:55:43 AM

18

1,361.50

XCSE

GENMAB A/S

26-Mar-25

11:55:43 AM

23

1,361.50

XCSE

GENMAB A/S

26-Mar-25

11:55:43 AM

21

1,361.50

XCSE

GENMAB A/S

26-Mar-25

11:55:58 AM

70

1,360.50

XCSE

GENMAB A/S

26-Mar-25

11:55:58 AM

1

1,360.50

XCSE

GENMAB A/S

26-Mar-25

11:55:58 AM

55

1,360.50

AQEU

GENMAB A/S

26-Mar-25

11:57:30 AM

75

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:57:30 AM

69

1,360.00

CEUX

GENMAB A/S

26-Mar-25

11:57:30 AM

23

1,360.50

TQEX

GENMAB A/S

26-Mar-25

11:57:30 AM

50

1,359.50

AQEU

GENMAB A/S

26-Mar-25

11:57:30 AM

56

1,360.50

AQEU

17

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

11:59:25 AM

11

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:59:25 AM

10

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:59:26 AM

1

1,359.50

XCSE

GENMAB A/S

26-Mar-25

11:59:35 AM

18

1,360.00

XCSE

GENMAB A/S

26-Mar-25

11:59:35 AM

22

1,360.00

XCSE

GENMAB A/S

26-Mar-25

11:59:35 AM

10

1,360.00

XCSE

GENMAB A/S

26-Mar-25

11:59:35 AM

10

1,360.00

XCSE

GENMAB A/S

26-Mar-25

12:01:26 PM

1

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:02:02 PM

12

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:02:26 PM

2

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:02:26 PM

1

1,363.00

CEUX

GENMAB A/S

26-Mar-25

12:03:26 PM

1

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:03:26 PM

2

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:03:27 PM

4

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:03:27 PM

2

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:03:45 PM

42

1,362.50

TQEX

GENMAB A/S

26-Mar-25

12:03:58 PM

10

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:03:58 PM

12

1,362.50

CEUX

GENMAB A/S

26-Mar-25

12:03:58 PM

4

1,362.50

CEUX

GENMAB A/S

26-Mar-25

12:04:26 PM

1

1,362.50

CEUX

GENMAB A/S

26-Mar-25

12:04:27 PM

11

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:04:27 PM

10

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:04:27 PM

31

1,362.50

CEUX

GENMAB A/S

26-Mar-25

12:05:25 PM

1

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:05:25 PM

1

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:05:25 PM

1

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:05:25 PM

1

1,362.50

CEUX

GENMAB A/S

26-Mar-25

12:05:26 PM

4

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:06:25 PM

1

1,362.50

XCSE

GENMAB A/S

26-Mar-25

12:06:34 PM

1

1,363.00

CEUX

GENMAB A/S

26-Mar-25

12:06:34 PM

18

1,363.00

CEUX

GENMAB A/S

26-Mar-25

12:06:40 PM

12

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:06:40 PM

22

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:06:40 PM

36

1,363.00

CEUX

GENMAB A/S

26-Mar-25

12:06:40 PM

24

1,363.00

CEUX

GENMAB A/S

26-Mar-25

12:06:40 PM

26

1,362.50

TQEX

GENMAB A/S

26-Mar-25

12:07:09 PM

12

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:09 PM

35

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:09 PM

17

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:09 PM

30

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:09 PM

5

1,363.00

CEUX

GENMAB A/S

26-Mar-25

12:07:10 PM

34

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:10 PM

39

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:10 PM

12

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:10 PM

11

1,363.00

XCSE

18

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

12:07:10 PM

10

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:10 PM

10

1,363.00

XCSE

GENMAB A/S

26-Mar-25

12:07:18 PM

70

1,364.00

CEUX

GENMAB A/S

26-Mar-25

12:07:19 PM

30

1,364.50

XCSE

GENMAB A/S

26-Mar-25

12:07:19 PM

71

1,364.50

CEUX

GENMAB A/S

26-Mar-25

12:07:21 PM

70

1,364.00

CEUX

GENMAB A/S

26-Mar-25

12:08:52 PM

71

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:08:52 PM

69

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:08:52 PM

73

1,370.00

AQEU

GENMAB A/S

26-Mar-25

12:08:53 PM

33

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:08:53 PM

50

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:08:54 PM

18

1,370.50

XCSE

GENMAB A/S

26-Mar-25

12:08:54 PM

1

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:09:01 PM

69

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:09:01 PM

72

1,371.00

CEUX

GENMAB A/S

26-Mar-25

12:09:01 PM

74

1,370.50

AQEU

GENMAB A/S

26-Mar-25

12:09:02 PM

75

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:09:02 PM

74

1,370.00

CEUX

GENMAB A/S

26-Mar-25

12:09:04 PM

13

1,369.00

XCSE

GENMAB A/S

26-Mar-25

12:09:04 PM

69

1,369.50

AQEU

GENMAB A/S

26-Mar-25

12:09:06 PM

60

1,369.00

XCSE

GENMAB A/S

26-Mar-25

12:09:06 PM

74

1,369.00

CEUX

GENMAB A/S

26-Mar-25

12:09:06 PM

1

1,369.00

CEUX

GENMAB A/S

26-Mar-25

12:13:05 PM

10

1,372.00

XCSE

GENMAB A/S

26-Mar-25

12:13:49 PM

11

1,372.00

XCSE

GENMAB A/S

26-Mar-25

12:13:52 PM

11

1,372.00

XCSE

GENMAB A/S

26-Mar-25

12:13:52 PM

11

1,372.00

XCSE

GENMAB A/S

26-Mar-25

12:13:52 PM

28

1,371.50

AQEU

GENMAB A/S

26-Mar-25

12:13:59 PM

17

1,372.00

XCSE

GENMAB A/S

26-Mar-25

12:14:07 PM

74

1,372.00

XCSE

GENMAB A/S

26-Mar-25

12:14:07 PM

62

1,372.00

CEUX

GENMAB A/S

26-Mar-25

12:14:07 PM

23

1,372.00

TQEX

GENMAB A/S

26-Mar-25

12:14:27 PM

70

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:14:27 PM

24

1,370.50

CEUX

GENMAB A/S

26-Mar-25

12:14:27 PM

45

1,370.50

AQEU

GENMAB A/S

26-Mar-25

12:14:27 PM

17

1,371.50

AQEU

GENMAB A/S

26-Mar-25

12:15:25 PM

69

1,369.50

XCSE

GENMAB A/S

26-Mar-25

12:15:25 PM

28

1,369.50

CEUX

GENMAB A/S

26-Mar-25

12:17:25 PM

3

1,371.50

XCSE

GENMAB A/S

26-Mar-25

12:17:25 PM

2

1,371.50

XCSE

GENMAB A/S

26-Mar-25

12:17:25 PM

2

1,371.50

XCSE

GENMAB A/S

26-Mar-25

12:17:26 PM

38

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:17:26 PM

37

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:17:26 PM

39

1,371.00

CEUX

GENMAB A/S

26-Mar-25

12:17:26 PM

25

1,370.50

AQEU

19

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

12:18:04 PM

14

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:18:04 PM

59

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:18:04 PM

20

1,370.00

CEUX

GENMAB A/S

26-Mar-25

12:18:04 PM

18

1,370.00

CEUX

GENMAB A/S

26-Mar-25

12:18:04 PM

41

1,369.50

AQEU

GENMAB A/S

26-Mar-25

12:18:07 PM

6

1,369.00

XCSE

GENMAB A/S

26-Mar-25

12:18:07 PM

68

1,369.00

XCSE

GENMAB A/S

26-Mar-25

12:18:11 PM

44

1,368.50

CEUX

GENMAB A/S

26-Mar-25

12:18:11 PM

26

1,368.50

TQEX

GENMAB A/S

26-Mar-25

12:21:00 PM

23

1,370.00

AQEU

GENMAB A/S

26-Mar-25

12:21:25 PM

2

1,369.50

XCSE

GENMAB A/S

26-Mar-25

12:21:25 PM

70

1,369.50

XCSE

GENMAB A/S

26-Mar-25

12:21:25 PM

14

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:21:25 PM

2

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:21:25 PM

7

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:21:25 PM

46

1,369.50

CEUX

GENMAB A/S

26-Mar-25

12:21:51 PM

1

1,368.50

XCSE

GENMAB A/S

26-Mar-25

12:21:51 PM

4

1,368.50

CEUX

GENMAB A/S

26-Mar-25

12:25:25 PM

23

1,369.00

TQEX

GENMAB A/S

26-Mar-25

12:25:26 PM

2

1,369.50

XCSE

GENMAB A/S

26-Mar-25

12:25:26 PM

1

1,369.50

XCSE

GENMAB A/S

26-Mar-25

12:27:26 PM

75

1,370.00

XCSE

GENMAB A/S

26-Mar-25

12:27:26 PM

23

1,370.00

AQEU

GENMAB A/S

26-Mar-25

12:28:07 PM

6

1,370.50

XCSE

GENMAB A/S

26-Mar-25

12:28:07 PM

11

1,370.50

XCSE

GENMAB A/S

26-Mar-25

12:28:26 PM

1

1,370.50

XCSE

GENMAB A/S

26-Mar-25

12:29:53 PM

3

1,370.00

AQEU

GENMAB A/S

26-Mar-25

12:30:08 PM

1

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

30

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

30

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

1

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

11

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

27

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

10

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

2

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

43

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:08 PM

10

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:09 PM

11

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:09 PM

12

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:09 PM

12

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:09 PM

34

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:09 PM

12

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:09 PM

30

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:09 PM

30

1,371.00

XCSE

GENMAB A/S

26-Mar-25

12:30:22 PM

73

1,369.50

XCSE

20

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

12:30:22 PM

75

1,369.50

CEUX

GENMAB A/S

26-Mar-25

12:30:22 PM

41

1,369.50

TQEX

GENMAB A/S

26-Mar-25

12:30:45 PM

72

1,368.50

XCSE

GENMAB A/S

26-Mar-25

12:30:45 PM

38

1,368.50

CEUX

GENMAB A/S

26-Mar-25

12:30:47 PM

74

1,367.50

XCSE

GENMAB A/S

26-Mar-25

12:30:47 PM

40

1,367.50

CEUX

GENMAB A/S

26-Mar-25

12:30:55 PM

75

1,366.50

XCSE

GENMAB A/S

26-Mar-25

12:30:55 PM

73

1,366.50

CEUX

GENMAB A/S

26-Mar-25

12:30:57 PM

70

1,365.50

XCSE

GENMAB A/S

26-Mar-25

12:30:57 PM

75

1,365.50

CEUX

GENMAB A/S

26-Mar-25

12:31:29 PM

20

1,364.00

XCSE

GENMAB A/S

26-Mar-25

12:31:29 PM

35

1,365.00

XCSE

GENMAB A/S

26-Mar-25

12:31:29 PM

14

1,364.50

CEUX

GENMAB A/S

26-Mar-25

12:31:29 PM

35

1,364.50

CEUX

GENMAB A/S

26-Mar-25

12:36:45 PM

1

1,366.00

XCSE

GENMAB A/S

26-Mar-25

12:36:45 PM

11

1,366.00

XCSE

GENMAB A/S

26-Mar-25

12:36:45 PM

1

1,366.00

XCSE

GENMAB A/S

26-Mar-25

12:37:20 PM

23

1,365.00

XCSE

GENMAB A/S

26-Mar-25

12:37:20 PM

23

1,365.50

CEUX

GENMAB A/S

26-Mar-25

12:37:20 PM

40

1,365.00

TQEX

GENMAB A/S

26-Mar-25

12:37:20 PM

26

1,365.50

AQEU

GENMAB A/S

26-Mar-25

12:38:17 PM

24

1,365.00

AQEU

GENMAB A/S

26-Mar-25

12:38:37 PM

10

1,365.00

XCSE

GENMAB A/S

26-Mar-25

12:38:37 PM

30

1,365.00

XCSE

GENMAB A/S

26-Mar-25

12:38:37 PM

42

1,365.00

XCSE

GENMAB A/S

26-Mar-25

12:38:37 PM

12

1,365.00

XCSE

GENMAB A/S

26-Mar-25

12:38:37 PM

27

1,364.50

CEUX

GENMAB A/S

26-Mar-25

12:38:37 PM

14

1,364.50

CEUX

GENMAB A/S

26-Mar-25

12:39:10 PM

3

1,365.50

XCSE

GENMAB A/S

26-Mar-25

12:39:14 PM

1

1365.50

XCSE

GENMAB A/S

26-Mar-25

12:40:26 PM

63

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:40:26 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:40:35 PM

2

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:40:35 PM

94

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:41:16 PM

74

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:41:21 PM

52

1364.00

XCSE

GENMAB A/S

26-Mar-25

12:41:21 PM

58

1364.00

CEUX

GENMAB A/S

26-Mar-25

12:41:21 PM

40

1364.00

TQEX

GENMAB A/S

26-Mar-25

12:41:21 PM

27

1364.00

AQEU

GENMAB A/S

26-Mar-25

12:43:51 PM

23

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:43:51 PM

75

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:43:51 PM

74

1365.00

CEUX

GENMAB A/S

26-Mar-25

12:45:47 PM

47

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:45:47 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:45:47 PM

1

1367.00

XCSE

21

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

12:45:47 PM

26

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:45:47 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

42

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

8

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

71

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

19

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

2

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

12:47:15 PM

69

1366.00

CEUX

GENMAB A/S

26-Mar-25

12:47:15 PM

42

1365.50

AQEU

GENMAB A/S

26-Mar-25

12:48:26 PM

74

1366.50

CEUX

GENMAB A/S

26-Mar-25

12:48:27 PM

20

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:48:27 PM

49

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:48:42 PM

6

1365.50

TQEX

GENMAB A/S

26-Mar-25

12:49:35 PM

73

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:52:26 PM

42

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:52:26 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:52:26 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:52:26 PM

19

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:53:23 PM

71

1366.00

CEUX

GENMAB A/S

26-Mar-25

12:53:26 PM

1

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

2

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

75

1365.50

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

21

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

42

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

37

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

10

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

13

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

42

1365.50

XCSE

GENMAB A/S

26-Mar-25

12:54:25 PM

67

1365.00

CEUX

GENMAB A/S

26-Mar-25

12:54:25 PM

30

1365.50

TQEX

GENMAB A/S

26-Mar-25

12:54:25 PM

41

1365.50

AQEU

GENMAB A/S

26-Mar-25

12:55:40 PM

44

1365.00

XCSE

GENMAB A/S

26-Mar-25

12:58:47 PM

23

1365.50

TQEX

GENMAB A/S

26-Mar-25

12:59:10 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:59:10 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:59:10 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

12:59:37 PM

71

1366.00

XCSE

GENMAB A/S

26-Mar-25

1:00:14 PM

4

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:00:14 PM

1

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:00:14 PM

42

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:00:14 PM

70

1366.00

CEUX

GENMAB A/S

26-Mar-25

1:00:14 PM

41

1366.50

TQEX

GENMAB A/S

26-Mar-25

1:01:14 PM

74

1368.00

XCSE

22

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

1:01:14 PM

73

1368.00

CEUX

GENMAB A/S

26-Mar-25

1:02:24 PM

42

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:02:26 PM

27

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:02:57 PM

69

1368.00

CEUX

GENMAB A/S

26-Mar-25

1:03:24 PM

21

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:03:24 PM

30

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:03:24 PM

15

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:03:24 PM

28

1367.50

AQEU

GENMAB A/S

26-Mar-25

1:03:26 PM

72

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:03:26 PM

1

1367.00

CEUX

GENMAB A/S

26-Mar-25

1:03:26 PM

70

1367.00

CEUX

GENMAB A/S

26-Mar-25

1:04:06 PM

6

1366.00

XCSE

GENMAB A/S

26-Mar-25

1:04:06 PM

69

1366.00

XCSE

GENMAB A/S

26-Mar-25

1:04:06 PM

72

1366.00

CEUX

GENMAB A/S

26-Mar-25

1:04:08 PM

71

1365.50

XCSE

GENMAB A/S

26-Mar-25

1:08:53 PM

25

1369.50

XCSE

GENMAB A/S

26-Mar-25

1:08:53 PM

10

1369.50

XCSE

GENMAB A/S

26-Mar-25

1:08:56 PM

72

1369.50

CEUX

GENMAB A/S

26-Mar-25

1:09:58 PM

34

1370.50

XCSE

GENMAB A/S

26-Mar-25

1:09:58 PM

42

1370.50

XCSE

GENMAB A/S

26-Mar-25

1:09:58 PM

18

1370.50

XCSE

GENMAB A/S

26-Mar-25

1:10:00 PM

75

1370.00

XCSE

GENMAB A/S

26-Mar-25

1:10:00 PM

36

1369.50

CEUX

GENMAB A/S

26-Mar-25

1:10:00 PM

23

1370.00

TQEX

GENMAB A/S

26-Mar-25

1:10:00 PM

25

1370.00

AQEU

GENMAB A/S

26-Mar-25

1:10:01 PM

75

1369.00

XCSE

GENMAB A/S

26-Mar-25

1:10:03 PM

9

1369.00

AQEU

GENMAB A/S

26-Mar-25

1:10:03 PM

18

1369.00

AQEU

GENMAB A/S

26-Mar-25

1:10:35 PM

35

1368.50

CEUX

GENMAB A/S

26-Mar-25

1:10:35 PM

34

1368.50

CEUX

GENMAB A/S

26-Mar-25

1:10:45 PM

74

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:11:14 PM

69

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:11:18 PM

66

1371.50

XCSE

GENMAB A/S

26-Mar-25

1:11:18 PM

48

1372.00

CEUX

GENMAB A/S

26-Mar-25

1:11:21 PM

23

1372.50

XCSE

GENMAB A/S

26-Mar-25

1:12:10 PM

51

1373.50

XCSE

GENMAB A/S

26-Mar-25

1:12:10 PM

28

1373.00

CEUX

GENMAB A/S

26-Mar-25

1:12:24 PM

43

1372.50

XCSE

GENMAB A/S

26-Mar-25

1:12:24 PM

29

1372.00

CEUX

GENMAB A/S

26-Mar-25

1:12:27 PM

50

1371.50

XCSE

GENMAB A/S

26-Mar-25

1:12:27 PM

44

1371.00

CEUX

GENMAB A/S

26-Mar-25

1:12:32 PM

25

1371.50

XCSE

GENMAB A/S

26-Mar-25

1:12:54 PM

41

1370.50

CEUX

GENMAB A/S

26-Mar-25

1:15:58 PM

5

1371.50

CEUX

GENMAB A/S

26-Mar-25

1:15:58 PM

18

1371.50

CEUX

23

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

1:16:13 PM

27

1372.50

TQEX

GENMAB A/S

26-Mar-25

1:19:25 PM

3

1372.50

XCSE

GENMAB A/S

26-Mar-25

1:19:25 PM

4

1372.50

XCSE

GENMAB A/S

26-Mar-25

1:19:48 PM

30

1373.00

XCSE

GENMAB A/S

26-Mar-25

1:19:48 PM

17

1373.00

XCSE

GENMAB A/S

26-Mar-25

1:20:25 PM

1

1372.50

XCSE

GENMAB A/S

26-Mar-25

1:20:25 PM

1

1372.50

XCSE

GENMAB A/S

26-Mar-25

1:20:25 PM

10

1372.50

XCSE

GENMAB A/S

26-Mar-25

1:20:42 PM

2

1373.50

XCSE

GENMAB A/S

26-Mar-25

1:20:42 PM

15

1373.50

XCSE

GENMAB A/S

26-Mar-25

1:21:06 PM

12

1373.50

XCSE

GENMAB A/S

26-Mar-25

1:21:06 PM

10

1373.50

XCSE

GENMAB A/S

26-Mar-25

1:21:55 PM

73

1373.00

XCSE

GENMAB A/S

26-Mar-25

1:21:55 PM

42

1373.00

XCSE

GENMAB A/S

26-Mar-25

1:21:55 PM

17

1373.00

XCSE

GENMAB A/S

26-Mar-25

1:21:55 PM

35

1373.00

XCSE

GENMAB A/S

26-Mar-25

1:21:55 PM

61

1373.00

CEUX

GENMAB A/S

26-Mar-25

1:21:55 PM

28

1373.00

AQEU

GENMAB A/S

26-Mar-25

1:21:56 PM

69

1372.00

XCSE

GENMAB A/S

26-Mar-25

1:21:56 PM

20

1372.00

CEUX

GENMAB A/S

26-Mar-25

1:21:56 PM

3

1372.00

CEUX

GENMAB A/S

26-Mar-25

1:21:56 PM

23

1372.00

TQEX

GENMAB A/S

26-Mar-25

1:21:56 PM

26

1372.00

AQEU

GENMAB A/S

26-Mar-25

1:22:15 PM

70

1372.00

XCSE

GENMAB A/S

26-Mar-25

1:22:15 PM

26

1372.00

TQEX

GENMAB A/S

26-Mar-25

1:23:25 PM

49

1372.50

CEUX

GENMAB A/S

26-Mar-25

1:24:24 PM

71

1372.00

XCSE

GENMAB A/S

26-Mar-25

1:25:41 PM

23

1372.00

AQEU

GENMAB A/S

26-Mar-25

1:26:18 PM

73

1372.00

XCSE

GENMAB A/S

26-Mar-25

1:26:35 PM

9

1371.50

CEUX

GENMAB A/S

26-Mar-25

1:26:37 PM

38

1371.50

CEUX

GENMAB A/S

26-Mar-25

1:26:49 PM

60

1371.00

XCSE

GENMAB A/S

26-Mar-25

1:26:49 PM

43

1371.00

TQEX

GENMAB A/S

26-Mar-25

1:26:50 PM

75

1370.00

XCSE

GENMAB A/S

26-Mar-25

1:26:50 PM

24

1370.50

CEUX

GENMAB A/S

26-Mar-25

1:29:19 PM

9

1370.00

AQEU

GENMAB A/S

26-Mar-25

1:29:27 PM

8

1369.50

XCSE

GENMAB A/S

26-Mar-25

1:29:31 PM

1

1369.50

XCSE

GENMAB A/S

26-Mar-25

1:30:02 PM

5

1369.50

XCSE

GENMAB A/S

26-Mar-25

1:30:02 PM

9

1369.50

XCSE

GENMAB A/S

26-Mar-25

1:30:25 PM

52

1369.00

CEUX

GENMAB A/S

26-Mar-25

1:30:27 PM

75

1368.50

XCSE

GENMAB A/S

26-Mar-25

1:30:30 PM

2

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:30:31 PM

10

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:30:59 PM

19

1367.50

CEUX

24

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

1:31:07 PM

27

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:31:15 PM

44

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:31:15 PM

27

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:32:30 PM

70

1366.00

XCSE

GENMAB A/S

26-Mar-25

1:32:30 PM

71

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:32:30 PM

46

1366.00

CEUX

GENMAB A/S

26-Mar-25

1:32:30 PM

24

1367.00

AQEU

GENMAB A/S

26-Mar-25

1:33:04 PM

75

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:33:04 PM

57

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:34:45 PM

75

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:34:45 PM

58

1366.50

CEUX

GENMAB A/S

26-Mar-25

1:35:38 PM

72

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:35:38 PM

23

1367.00

AQEU

GENMAB A/S

26-Mar-25

1:37:27 PM

23

1366.50

CEUX

GENMAB A/S

26-Mar-25

1:39:26 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:39:26 PM

71

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:39:26 PM

59

1367.00

CEUX

GENMAB A/S

26-Mar-25

1:39:26 PM

24

1367.50

TQEX

GENMAB A/S

26-Mar-25

1:39:26 PM

24

1367.50

AQEU

GENMAB A/S

26-Mar-25

1:39:30 PM

70

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:40:21 PM

73

1365.50

XCSE

GENMAB A/S

26-Mar-25

1:40:21 PM

1

1365.50

CEUX

GENMAB A/S

26-Mar-25

1:40:21 PM

43

1365.50

CEUX

GENMAB A/S

26-Mar-25

1:40:31 PM

57

1365.50

CEUX

GENMAB A/S

26-Mar-25

1:41:00 PM

69

1365.00

XCSE

GENMAB A/S

26-Mar-25

1:41:00 PM

25

1365.00

TQEX

GENMAB A/S

26-Mar-25

1:41:08 PM

72

1364.00

XCSE

GENMAB A/S

26-Mar-25

1:41:08 PM

4

1364.00

CEUX

GENMAB A/S

26-Mar-25

1:41:08 PM

29

1364.00

CEUX

GENMAB A/S

26-Mar-25

1:41:40 PM

14

1363.00

XCSE

GENMAB A/S

26-Mar-25

1:42:28 PM

41

1363.50

AQEU

GENMAB A/S

26-Mar-25

1:43:08 PM

35

1363.50

CEUX

GENMAB A/S

26-Mar-25

1:44:48 PM

50

1367.00

CEUX

GENMAB A/S

26-Mar-25

1:44:48 PM

26

1367.50

TQEX

GENMAB A/S

26-Mar-25

1:44:49 PM

74

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:44:49 PM

35

1367.00

CEUX

GENMAB A/S

26-Mar-25

1:44:49 PM

56

1366.00

CEUX

GENMAB A/S

26-Mar-25

1:44:54 PM

75

1365.00

XCSE

GENMAB A/S

26-Mar-25

1:46:26 PM

26

1365.00

CEUX

GENMAB A/S

26-Mar-25

1:46:41 PM

74

1365.00

XCSE

GENMAB A/S

26-Mar-25

1:48:35 PM

34

1366.00

CEUX

GENMAB A/S

26-Mar-25

1:48:41 PM

2

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:48:41 PM

8

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:49:03 PM

30

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:50:23 PM

75

1368.00

XCSE

25

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

1:50:23 PM

28

1368.00

CEUX

GENMAB A/S

26-Mar-25

1:50:23 PM

42

1368.00

TQEX

GENMAB A/S

26-Mar-25

1:50:23 PM

41

1368.00

AQEU

GENMAB A/S

26-Mar-25

1:50:25 PM

19

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:50:25 PM

25

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:50:25 PM

2

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:50:25 PM

1

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:50:25 PM

74

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:50:25 PM

23

1368.00

CEUX

GENMAB A/S

26-Mar-25

1:51:25 PM

11

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:51:25 PM

2

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:51:25 PM

12

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:51:25 PM

2

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:51:25 PM

2

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:51:34 PM

29

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:52:05 PM

17

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:52:05 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:52:05 PM

30

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:52:05 PM

8

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:52:05 PM

4

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:52:55 PM

2

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:52:57 PM

18

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:53:11 PM

6

1366.50

CEUX

GENMAB A/S

26-Mar-25

1:53:15 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:53:15 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:53:15 PM

2

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:53:37 PM

18

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:54:03 PM

1

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:54:15 PM

1

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:54:15 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:54:15 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:54:15 PM

18

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:54:15 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:54:15 PM

18

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:54:55 PM

14

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:54:55 PM

18

1367.00

XCSE

GENMAB A/S

26-Mar-25

1:55:28 PM

5

1369.00

XCSE

GENMAB A/S

26-Mar-25

1:55:28 PM

72

1369.00

XCSE

GENMAB A/S

26-Mar-25

1:55:28 PM

18

1369.00

XCSE

GENMAB A/S

26-Mar-25

1:55:28 PM

40

1369.50

CEUX

GENMAB A/S

26-Mar-25

1:55:28 PM

12

1369.50

CEUX

GENMAB A/S

26-Mar-25

1:55:28 PM

22

1369.00

TQEX

GENMAB A/S

26-Mar-25

1:55:42 PM

48

1368.50

CEUX

GENMAB A/S

26-Mar-25

1:56:55 PM

73

1368.50

XCSE

GENMAB A/S

26-Mar-25

1:56:55 PM

18

1368.50

XCSE

26

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

1:56:55 PM

1

1368.50

XCSE

GENMAB A/S

26-Mar-25

1:56:55 PM

4

1368.50

XCSE

GENMAB A/S

26-Mar-25

1:56:55 PM

40

1368.00

AQEU

GENMAB A/S

26-Mar-25

1:57:31 PM

55

1367.50

CEUX

GENMAB A/S

26-Mar-25

1:58:25 PM

8

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:58:25 PM

3

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:58:25 PM

3

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:25 PM

15

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:25 PM

2

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:25 PM

39

1368.00

CEUX

GENMAB A/S

26-Mar-25

1:59:26 PM

12

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:26 PM

11

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:26 PM

17

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:26 PM

18

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:26 PM

3

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:26 PM

4

1368.00

XCSE

GENMAB A/S

26-Mar-25

1:59:47 PM

70

1367.50

XCSE

GENMAB A/S

26-Mar-25

1:59:47 PM

44

1367.00

CEUX

GENMAB A/S

26-Mar-25

1:59:47 PM

39

1367.50

TQEX

GENMAB A/S

26-Mar-25

1:59:49 PM

49

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:59:49 PM

23

1366.50

XCSE

GENMAB A/S

26-Mar-25

1:59:49 PM

25

1366.00

CEUX

GENMAB A/S

26-Mar-25

2:00:32 PM

75

1366.00

XCSE

GENMAB A/S

26-Mar-25

2:00:32 PM

30

1366.00

CEUX

GENMAB A/S

26-Mar-25

2:01:36 PM

71

1366.00

XCSE

GENMAB A/S

26-Mar-25

2:03:52 PM

30

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:03:52 PM

40

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:04:34 PM

23

1365.00

CEUX

GENMAB A/S

26-Mar-25

2:06:32 PM

10

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:06:32 PM

12

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:06:32 PM

8

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:06:32 PM

13

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:06:32 PM

16

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:06:32 PM

10

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:06:33 PM

23

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:06:44 PM

48

1364.00

XCSE

GENMAB A/S

26-Mar-25

2:06:44 PM

6

1364.00

XCSE

GENMAB A/S

26-Mar-25

2:06:44 PM

37

1364.50

XCSE

GENMAB A/S

26-Mar-25

2:06:44 PM

8

1364.00

XCSE

GENMAB A/S

26-Mar-25

2:06:44 PM

7

1364.00

XCSE

GENMAB A/S

26-Mar-25

2:06:44 PM

15

1364.00

CEUX

GENMAB A/S

26-Mar-25

2:06:44 PM

10

1364.00

CEUX

GENMAB A/S

26-Mar-25

2:06:49 PM

36

1363.50

TQEX

GENMAB A/S

26-Mar-25

2:06:49 PM

5

1363.50

TQEX

GENMAB A/S

26-Mar-25

2:06:49 PM

39

1363.50

AQEU

27

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:07:26 PM

74

1363.00

XCSE

GENMAB A/S

26-Mar-25

2:08:34 PM

71

1363.00

XCSE

GENMAB A/S

26-Mar-25

2:08:34 PM

23

1363.00

CEUX

GENMAB A/S

26-Mar-25

2:09:50 PM

72

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:10:25 PM

75

1364.50

CEUX

GENMAB A/S

26-Mar-25

2:11:09 PM

75

1364.00

XCSE

GENMAB A/S

26-Mar-25

2:11:17 PM

41

1363.50

AQEU

GENMAB A/S

26-Mar-25

2:11:18 PM

72

1362.50

XCSE

GENMAB A/S

26-Mar-25

2:11:18 PM

72

1363.00

CEUX

GENMAB A/S

26-Mar-25

2:11:18 PM

20

1363.00

TQEX

GENMAB A/S

26-Mar-25

2:11:18 PM

19

1363.00

TQEX

GENMAB A/S

26-Mar-25

2:12:34 PM

39

1361.50

CEUX

GENMAB A/S

26-Mar-25

2:13:25 PM

42

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:13:25 PM

4

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:13:25 PM

10

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:13:25 PM

12

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:13:25 PM

71

1361.00

XCSE

GENMAB A/S

26-Mar-25

2:13:25 PM

26

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:13:33 PM

69

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:13:33 PM

62

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:15:12 PM

69

1362.50

XCSE

GENMAB A/S

26-Mar-25

2:15:12 PM

40

1362.50

CEUX

GENMAB A/S

26-Mar-25

2:15:16 PM

2

1362.50

CEUX

GENMAB A/S

26-Mar-25

2:15:16 PM

13

1362.50

CEUX

GENMAB A/S

26-Mar-25

2:16:57 PM

69

1362.50

XCSE

GENMAB A/S

26-Mar-25

2:16:57 PM

40

1363.00

AQEU

GENMAB A/S

26-Mar-25

2:17:27 PM

72

1366.00

XCSE

GENMAB A/S

26-Mar-25

2:17:27 PM

6

1366.00

CEUX

GENMAB A/S

26-Mar-25

2:17:27 PM

75

1366.00

CEUX

GENMAB A/S

26-Mar-25

2:17:27 PM

47

1366.00

CEUX

GENMAB A/S

26-Mar-25

2:17:27 PM

41

1366.00

TQEX

GENMAB A/S

26-Mar-25

2:17:41 PM

6

1365.50

CEUX

GENMAB A/S

26-Mar-25

2:17:41 PM

21

1365.50

CEUX

GENMAB A/S

26-Mar-25

2:17:44 PM

74

1365.00

XCSE

GENMAB A/S

26-Mar-25

2:17:54 PM

71

1364.50

CEUX

GENMAB A/S

26-Mar-25

2:18:25 PM

72

1364.00

XCSE

GENMAB A/S

26-Mar-25

2:19:09 PM

73

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:19:09 PM

38

1363.50

CEUX

GENMAB A/S

26-Mar-25

2:19:09 PM

2

1363.50

CEUX

GENMAB A/S

26-Mar-25

2:19:49 PM

23

1363.00

CEUX

GENMAB A/S

26-Mar-25

2:19:59 PM

74

1364.50

XCSE

GENMAB A/S

26-Mar-25

2:20:00 PM

16

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:20:14 PM

59

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:21:29 PM

73

1362.50

XCSE

GENMAB A/S

26-Mar-25

2:21:29 PM

23

1362.50

CEUX

28

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:21:53 PM

75

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:21:53 PM

30

1363.50

CEUX

GENMAB A/S

26-Mar-25

2:22:19 PM

10

1364.00

CEUX

GENMAB A/S

26-Mar-25

2:22:19 PM

18

1364.00

CEUX

GENMAB A/S

26-Mar-25

2:22:19 PM

30

1364.00

TQEX

GENMAB A/S

26-Mar-25

2:22:54 PM

68

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:23:25 PM

42

1363.50

AQEU

GENMAB A/S

26-Mar-25

2:23:52 PM

72

1362.50

XCSE

GENMAB A/S

26-Mar-25

2:23:52 PM

32

1362.50

CEUX

GENMAB A/S

26-Mar-25

2:24:40 PM

70

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:25:12 PM

1

1362.00

CEUX

GENMAB A/S

26-Mar-25

2:25:12 PM

27

1362.00

CEUX

GENMAB A/S

26-Mar-25

2:25:15 PM

8

1362.00

CEUX

GENMAB A/S

26-Mar-25

2:25:41 PM

65

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:25:41 PM

9

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:25:41 PM

43

1362.00

CEUX

GENMAB A/S

26-Mar-25

2:26:18 PM

75

1361.00

XCSE

GENMAB A/S

26-Mar-25

2:26:18 PM

71

1362.00

XCSE

GENMAB A/S

26-Mar-25

2:26:18 PM

23

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:26:18 PM

36

1362.00

CEUX

GENMAB A/S

26-Mar-25

2:26:18 PM

9

1360.50

TQEX

GENMAB A/S

26-Mar-25

2:26:18 PM

29

1361.50

TQEX

GENMAB A/S

26-Mar-25

2:26:19 PM

60

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:26:30 PM

25

1360.50

XCSE

GENMAB A/S

26-Mar-25

2:26:30 PM

30

1360.50

CEUX

GENMAB A/S

26-Mar-25

2:27:30 PM

70

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:27:30 PM

31

1363.50

CEUX

GENMAB A/S

26-Mar-25

2:27:55 PM

5

1364.50

XCSE

GENMAB A/S

26-Mar-25

2:27:55 PM

66

1364.50

XCSE

GENMAB A/S

26-Mar-25

2:27:55 PM

21

1364.50

CEUX

GENMAB A/S

26-Mar-25

2:27:55 PM

10

1364.50

CEUX

GENMAB A/S

26-Mar-25

2:27:55 PM

31

1364.50

AQEU

GENMAB A/S

26-Mar-25

2:29:33 PM

71

1364.50

XCSE

GENMAB A/S

26-Mar-25

2:29:33 PM

5

1364.50

CEUX

GENMAB A/S

26-Mar-25

2:29:33 PM

2

1364.50

CEUX

GENMAB A/S

26-Mar-25

2:29:33 PM

34

1364.50

CEUX

GENMAB A/S

26-Mar-25

2:29:52 PM

15

1364.00

AQEU

GENMAB A/S

26-Mar-25

2:29:52 PM

9

1364.00

AQEU

GENMAB A/S

26-Mar-25

2:30:00 PM

1

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:30:00 PM

15

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:30:00 PM

55

1363.50

XCSE

GENMAB A/S

26-Mar-25

2:30:00 PM

25

1363.50

CEUX

GENMAB A/S

26-Mar-25

2:30:02 PM

23

1363.00

TQEX

GENMAB A/S

26-Mar-25

2:30:10 PM

19

1362.50

XCSE

GENMAB A/S

26-Mar-25

2:30:10 PM

53

1362.50

XCSE

29

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:30:10 PM

14

1362.50

CEUX

GENMAB A/S

26-Mar-25

2:30:10 PM

9

1362.50

CEUX

GENMAB A/S

26-Mar-25

2:30:11 PM

72

1361.00

XCSE

GENMAB A/S

26-Mar-25

2:30:11 PM

44

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:30:11 PM

6

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:30:12 PM

23

1359.50

XCSE

GENMAB A/S

26-Mar-25

2:30:12 PM

50

1359.50

XCSE

GENMAB A/S

26-Mar-25

2:30:12 PM

43

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:30:13 PM

52

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:30:41 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:30:41 PM

22

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:30:41 PM

34

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:30:41 PM

3

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:30:42 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

2:30:42 PM

3

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:30:42 PM

8

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:30:42 PM

12

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:30:47 PM

10

1362.00

TQEX

GENMAB A/S

26-Mar-25

2:30:48 PM

15

1362.00

TQEX

GENMAB A/S

26-Mar-25

2:30:48 PM

3

1362.00

AQEU

GENMAB A/S

26-Mar-25

2:30:48 PM

21

1362.00

AQEU

GENMAB A/S

26-Mar-25

2:31:10 PM

57

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:31:10 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:31:10 PM

35

1361.50

CEUX

GENMAB A/S

26-Mar-25

2:31:13 PM

18

1360.50

XCSE

GENMAB A/S

26-Mar-25

2:31:13 PM

33

1360.50

CEUX

GENMAB A/S

26-Mar-25

2:31:18 PM

48

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:31:18 PM

25

1359.50

CEUX

GENMAB A/S

26-Mar-25

2:31:18 PM

34

1358.50

CEUX

GENMAB A/S

26-Mar-25

2:31:19 PM

42

1358.00

XCSE

GENMAB A/S

26-Mar-25

2:31:31 PM

31

1358.00

XCSE

GENMAB A/S

26-Mar-25

2:31:31 PM

3

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:31:31 PM

7

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:31:31 PM

60

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:31:31 PM

1

1356.00

XCSE

GENMAB A/S

26-Mar-25

2:31:31 PM

33

1357.00

CEUX

GENMAB A/S

26-Mar-25

2:31:31 PM

12

1357.00

AQEU

GENMAB A/S

26-Mar-25

2:31:35 PM

26

1358.50

TQEX

GENMAB A/S

26-Mar-25

2:32:10 PM

22

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:32:10 PM

17

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:32:10 PM

68

1356.00

XCSE

GENMAB A/S

26-Mar-25

2:32:10 PM

62

1358.00

XCSE

GENMAB A/S

26-Mar-25

2:32:10 PM

24

1356.50

CEUX

GENMAB A/S

26-Mar-25

2:32:10 PM

30

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:32:10 PM

29

1357.00

AQEU

30

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:33:01 PM

23

1358.00

TQEX

GENMAB A/S

26-Mar-25

2:33:14 PM

74

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:33:27 PM

17

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:33:27 PM

10

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:33:27 PM

72

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:33:27 PM

21

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:33:27 PM

25

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:33:27 PM

23

1357.50

TQEX

GENMAB A/S

26-Mar-25

2:33:27 PM

23

1358.00

AQEU

GENMAB A/S

26-Mar-25

2:34:25 PM

74

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:34:25 PM

22

1355.00

XCSE

GENMAB A/S

26-Mar-25

2:34:25 PM

10

1356.00

XCSE

GENMAB A/S

26-Mar-25

2:34:25 PM

20

1356.00

XCSE

GENMAB A/S

26-Mar-25

2:34:25 PM

50

1355.00

XCSE

GENMAB A/S

26-Mar-25

2:34:25 PM

11

1355.50

XCSE

GENMAB A/S

26-Mar-25

2:34:25 PM

33

1356.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

1

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

4

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

2

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

2

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

1

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

1

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

16

1355.00

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

20

1355.00

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

2

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

1

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:25 PM

11

1355.50

TQEX

GENMAB A/S

26-Mar-25

2:34:25 PM

24

1355.50

AQEU

GENMAB A/S

26-Mar-25

2:34:25 PM

14

1355.50

AQEU

GENMAB A/S

26-Mar-25

2:34:26 PM

39

1355.50

XCSE

GENMAB A/S

26-Mar-25

2:34:27 PM

23

1355.50

XCSE

GENMAB A/S

26-Mar-25

2:34:27 PM

59

1355.50

CEUX

GENMAB A/S

26-Mar-25

2:34:57 PM

20

1355.00

XCSE

GENMAB A/S

26-Mar-25

2:34:57 PM

30

1355.00

XCSE

GENMAB A/S

26-Mar-25

2:34:57 PM

10

1355.00

XCSE

GENMAB A/S

26-Mar-25

2:34:57 PM

12

1355.00

XCSE

GENMAB A/S

26-Mar-25

2:34:59 PM

12

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:34:59 PM

10

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:34:59 PM

20

1354.00

CEUX

GENMAB A/S

26-Mar-25

2:34:59 PM

6

1354.00

CEUX

GENMAB A/S

26-Mar-25

2:35:00 PM

20

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:35:30 PM

32

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:35:31 PM

42

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:35:31 PM

20

1353.50

XCSE

GENMAB A/S

26-Mar-25

2:35:31 PM

20

1354.00

XCSE

31

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:35:31 PM

45

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:35:31 PM

30

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:35:31 PM

49

1354.00

CEUX

GENMAB A/S

26-Mar-25

2:35:31 PM

29

1354.00

TQEX

GENMAB A/S

26-Mar-25

2:35:31 PM

23

1354.00

AQEU

GENMAB A/S

26-Mar-25

2:35:41 PM

11

1354.50

XCSE

GENMAB A/S

26-Mar-25

2:35:41 PM

3

1354.50

XCSE

GENMAB A/S

26-Mar-25

2:35:41 PM

42

1354.50

XCSE

GENMAB A/S

26-Mar-25

2:35:41 PM

12

1354.50

XCSE

GENMAB A/S

26-Mar-25

2:35:41 PM

21

1354.50

XCSE

GENMAB A/S

26-Mar-25

2:35:41 PM

2

1354.50

XCSE

GENMAB A/S

26-Mar-25

2:36:21 PM

30

1353.00

XCSE

GENMAB A/S

26-Mar-25

2:36:21 PM

75

1354.00

XCSE

GENMAB A/S

26-Mar-25

2:36:21 PM

45

1353.00

XCSE

GENMAB A/S

26-Mar-25

2:36:21 PM

71

1352.50

CEUX

GENMAB A/S

26-Mar-25

2:36:21 PM

69

1353.50

CEUX

GENMAB A/S

26-Mar-25

2:36:21 PM

24

1352.50

TQEX

GENMAB A/S

26-Mar-25

2:36:27 PM

57

1353.00

CEUX

GENMAB A/S

26-Mar-25

2:36:30 PM

71

1352.50

XCSE

GENMAB A/S

26-Mar-25

2:36:31 PM

73

1352.00

CEUX

GENMAB A/S

26-Mar-25

2:36:43 PM

71

1351.50

XCSE

GENMAB A/S

26-Mar-25

2:37:04 PM

69

1353.50

XCSE

GENMAB A/S

26-Mar-25

2:37:13 PM

23

1353.50

AQEU

GENMAB A/S

26-Mar-25

2:37:44 PM

1

1353.00

CEUX

GENMAB A/S

26-Mar-25

2:37:44 PM

23

1353.00

CEUX

GENMAB A/S

26-Mar-25

2:37:48 PM

72

1352.50

XCSE

GENMAB A/S

26-Mar-25

2:37:48 PM

8

1352.00

CEUX

GENMAB A/S

26-Mar-25

2:37:48 PM

15

1352.00

CEUX

GENMAB A/S

26-Mar-25

2:37:48 PM

25

1352.00

TQEX

GENMAB A/S

26-Mar-25

2:38:53 PM

16

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:38:53 PM

2

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:01 PM

42

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:01 PM

10

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:01 PM

30

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:01 PM

23

1357.50

AQEU

GENMAB A/S

26-Mar-25

2:39:02 PM

17

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:02 PM

10

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:02 PM

9

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:02 PM

11

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:02 PM

69

1357.00

CEUX

GENMAB A/S

26-Mar-25

2:39:14 PM

69

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:39:15 PM

10

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:39:15 PM

14

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:39:15 PM

48

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:39:15 PM

43

1357.00

TQEX

32

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:39:21 PM

2

1356.00

CEUX

GENMAB A/S

26-Mar-25

2:39:22 PM

71

1356.00

CEUX

GENMAB A/S

26-Mar-25

2:39:32 PM

11

1355.50

XCSE

GENMAB A/S

26-Mar-25

2:39:59 PM

9

1357.00

AQEU

GENMAB A/S

26-Mar-25

2:40:03 PM

10

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:40:15 PM

10

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:40:31 PM

9

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:40:35 PM

11

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:40:44 PM

72

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:40:44 PM

75

1358.00

CEUX

GENMAB A/S

26-Mar-25

2:41:05 PM

38

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:41:05 PM

4

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:41:05 PM

11

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:41:05 PM

19

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:41:05 PM

22

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:41:33 PM

42

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:41:33 PM

2

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:41:51 PM

72

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:41:51 PM

9

1359.50

CEUX

GENMAB A/S

26-Mar-25

2:41:51 PM

54

1359.50

CEUX

GENMAB A/S

26-Mar-25

2:41:51 PM

30

1359.50

AQEU

GENMAB A/S

26-Mar-25

2:41:52 PM

7

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:41:54 PM

9

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:41:54 PM

16

1358.50

TQEX

GENMAB A/S

26-Mar-25

2:42:23 PM

4

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:42:23 PM

2

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:42:23 PM

63

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:42:23 PM

15

1359.00

AQEU

GENMAB A/S

26-Mar-25

2:42:27 PM

15

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:42:27 PM

24

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:43:11 PM

3

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:43:11 PM

11

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:43:25 PM

44

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:43:25 PM

50

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:43:25 PM

57

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:43:26 PM

19

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:43:26 PM

75

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:43:56 PM

10

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:44:04 PM

10

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:44:04 PM

10

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:44:04 PM

37

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:44:27 PM

23

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:44:27 PM

31

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:44:27 PM

10

1358.00

XCSE

GENMAB A/S

26-Mar-25

2:44:27 PM

42

1358.00

XCSE

33

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:44:27 PM

11

1358.00

XCSE

GENMAB A/S

26-Mar-25

2:44:27 PM

44

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:44:27 PM

10

1358.00

CEUX

GENMAB A/S

26-Mar-25

2:44:27 PM

17

1358.00

CEUX

GENMAB A/S

26-Mar-25

2:44:27 PM

23

1358.50

TQEX

GENMAB A/S

26-Mar-25

2:44:27 PM

26

1359.00

AQEU

GENMAB A/S

26-Mar-25

2:45:13 PM

12

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:13 PM

3

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:45:13 PM

4

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:45:13 PM

56

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:45:13 PM

11

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:13 PM

16

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:13 PM

10

1358.50

XCSE

GENMAB A/S

26-Mar-25

2:45:26 PM

3

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:26 PM

10

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:26 PM

10

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:45 PM

42

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:45 PM

10

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:45 PM

3

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:45 PM

23

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:45 PM

16

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:45:49 PM

5

1358.50

TQEX

GENMAB A/S

26-Mar-25

2:47:06 PM

10

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:47:06 PM

42

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:47:06 PM

11

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:47:06 PM

68

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:48:12 PM

74

1359.50

XCSE

GENMAB A/S

26-Mar-25

2:48:12 PM

24

1359.50

TQEX

GENMAB A/S

26-Mar-25

2:48:12 PM

35

1359.50

AQEU

GENMAB A/S

26-Mar-25

2:48:24 PM

2

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:48:24 PM

9

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:48:24 PM

5

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:48:24 PM

2

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:48:24 PM

4

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:49:27 PM

69

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:49:51 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:49:51 PM

19

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:49:51 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:50:04 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:50:41 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:50:41 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:50:45 PM

8

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:52:26 PM

1

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:53:28 PM

65

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:53:28 PM

7

1361.50

XCSE

34

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:53:28 PM

36

1361.50

CEUX

GENMAB A/S

26-Mar-25

2:53:46 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:53:46 PM

9

1361.50

CEUX

GENMAB A/S

26-Mar-25

2:53:51 PM

69

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:53:52 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:53:52 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:07 PM

14

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:07 PM

28

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

71

1360.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

24

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

1

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

72

1359.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

28

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

2:54:26 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:54:26 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:54:26 PM

75

1359.00

CEUX

GENMAB A/S

26-Mar-25

2:54:26 PM

14

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:54:26 PM

58

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:54:26 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

2:54:26 PM

10

1360.00

TQEX

GENMAB A/S

26-Mar-25

2:54:26 PM

16

1360.00

TQEX

GENMAB A/S

26-Mar-25

2:54:26 PM

24

1361.00

TQEX

GENMAB A/S

26-Mar-25

2:54:26 PM

28

1360.50

AQEU

GENMAB A/S

26-Mar-25

2:55:21 PM

1

1359.50

CEUX

GENMAB A/S

26-Mar-25

2:55:40 PM

24

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:55:40 PM

7

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:55:40 PM

3

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:55:40 PM

2

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:55:40 PM

10

1360.00

CEUX

GENMAB A/S

26-Mar-25

2:55:48 PM

17

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:55:59 PM

42

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:55:59 PM

11

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:55:59 PM

11

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:56:00 PM

1

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:56:00 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:56:00 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:56:13 PM

72

1361.00

XCSE

GENMAB A/S

26-Mar-25

2:56:13 PM

9

1361.00

AQEU

GENMAB A/S

26-Mar-25

2:56:13 PM

26

1361.00

AQEU

GENMAB A/S

26-Mar-25

2:56:16 PM

74

1360.00

XCSE

GENMAB A/S

26-Mar-25

2:56:16 PM

10

1359.00

XCSE

35

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:56:16 PM

32

1360.50

CEUX

GENMAB A/S

26-Mar-25

2:56:16 PM

11

1360.50

CEUX

GENMAB A/S

26-Mar-25

2:56:16 PM

30

1360.50

CEUX

GENMAB A/S

26-Mar-25

2:56:16 PM

70

1359.50

CEUX

GENMAB A/S

26-Mar-25

2:56:16 PM

34

1360.50

CEUX

GENMAB A/S

26-Mar-25

2:56:16 PM

36

1361.00

TQEX

GENMAB A/S

26-Mar-25

2:56:16 PM

4

1359.50

TQEX

GENMAB A/S

26-Mar-25

2:56:16 PM

8

1358.50

TQEX

GENMAB A/S

26-Mar-25

2:56:16 PM

10

1359.50

TQEX

GENMAB A/S

26-Mar-25

2:56:16 PM

10

1359.50

TQEX

GENMAB A/S

26-Mar-25

2:56:16 PM

7

1359.50

TQEX

GENMAB A/S

26-Mar-25

2:56:16 PM

35

1360.00

AQEU

GENMAB A/S

26-Mar-25

2:56:21 PM

63

1359.00

XCSE

GENMAB A/S

26-Mar-25

2:56:25 PM

20

1358.50

CEUX

GENMAB A/S

26-Mar-25

2:56:25 PM

8

1358.50

CEUX

GENMAB A/S

26-Mar-25

2:56:25 PM

20

1358.50

CEUX

GENMAB A/S

26-Mar-25

2:56:25 PM

10

1358.50

CEUX

GENMAB A/S

26-Mar-25

2:56:25 PM

2

1358.50

CEUX

GENMAB A/S

26-Mar-25

2:56:25 PM

15

1358.50

CEUX

GENMAB A/S

26-Mar-25

2:56:37 PM

47

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:56:37 PM

22

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:56:37 PM

6

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:56:37 PM

14

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:56:37 PM

40

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:56:37 PM

11

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:56:37 PM

7

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:56:37 PM

3

1357.50

CEUX

GENMAB A/S

26-Mar-25

2:56:45 PM

6

1356.00

CEUX

GENMAB A/S

26-Mar-25

2:56:50 PM

7

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:56:50 PM

20

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:56:50 PM

32

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:56:50 PM

10

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:56:50 PM

30

1356.00

CEUX

GENMAB A/S

26-Mar-25

2:57:10 PM

23

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:57:10 PM

17

1357.00

CEUX

GENMAB A/S

26-Mar-25

2:57:10 PM

18

1357.00

CEUX

GENMAB A/S

26-Mar-25

2:57:10 PM

25

1357.00

AQEU

GENMAB A/S

26-Mar-25

2:57:13 PM

19

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:57:13 PM

42

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:57:13 PM

49

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:57:13 PM

14

1356.00

CEUX

GENMAB A/S

26-Mar-25

2:57:18 PM

42

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:57:18 PM

6

1356.00

XCSE

GENMAB A/S

26-Mar-25

2:57:18 PM

19

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:57:18 PM

19

1356.00

CEUX

36

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

2:57:56 PM

67

1356.00

XCSE

GENMAB A/S

26-Mar-25

2:58:20 PM

4

1356.50

CEUX

GENMAB A/S

26-Mar-25

2:58:20 PM

1

1356.50

CEUX

GENMAB A/S

26-Mar-25

2:58:28 PM

20

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:58:28 PM

27

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:58:28 PM

10

1356.50

CEUX

GENMAB A/S

26-Mar-25

2:58:30 PM

10

1356.50

CEUX

GENMAB A/S

26-Mar-25

2:58:31 PM

12

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:58:31 PM

42

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:58:31 PM

33

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:58:31 PM

29

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:58:31 PM

8

1356.50

XCSE

GENMAB A/S

26-Mar-25

2:58:31 PM

11

1357.00

XCSE

GENMAB A/S

26-Mar-25

2:58:31 PM

8

1356.50

CEUX

GENMAB A/S

26-Mar-25

2:58:31 PM

23

1356.50

TQEX

GENMAB A/S

26-Mar-25

2:58:58 PM

31

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:58:58 PM

11

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:58:58 PM

42

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:58:58 PM

10

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:58:59 PM

10

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:58:59 PM

12

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:59:00 PM

42

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:59:00 PM

11

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:59:00 PM

42

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:59:00 PM

11

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:59:00 PM

12

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:59:00 PM

12

1357.50

XCSE

GENMAB A/S

26-Mar-25

2:59:01 PM

8

1356.50

XCSE

GENMAB A/S

26-Mar-25

3:00:00 PM

75

1357.50

XCSE

GENMAB A/S

26-Mar-25

3:00:00 PM

10

1357.00

CEUX

GENMAB A/S

26-Mar-25

3:01:16 PM

25

1358.50

XCSE

GENMAB A/S

26-Mar-25

3:01:16 PM

10

1358.00

CEUX

GENMAB A/S

26-Mar-25

3:01:16 PM

10

1358.00

CEUX

GENMAB A/S

26-Mar-25

3:01:16 PM

20

1358.00

CEUX

GENMAB A/S

26-Mar-25

3:02:31 PM

74

1360.00

CEUX

GENMAB A/S

26-Mar-25

3:02:31 PM

23

1360.00

TQEX

GENMAB A/S

26-Mar-25

3:02:31 PM

34

1360.00

AQEU

GENMAB A/S

26-Mar-25

3:03:00 PM

4

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:03:00 PM

70

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:03:35 PM

74

1361.00

CEUX

GENMAB A/S

26-Mar-25

3:04:12 PM

9

1361.00

TQEX

GENMAB A/S

26-Mar-25

3:04:12 PM

8

1361.00

AQEU

GENMAB A/S

26-Mar-25

3:05:30 PM

3

1361.00

AQEU

GENMAB A/S

26-Mar-25

3:06:03 PM

2

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:06:34 PM

4

1361.50

CEUX

37

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:07:41 PM

1

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:07:41 PM

10

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:07:54 PM

39

1362.00

TQEX

GENMAB A/S

26-Mar-25

3:07:54 PM

41

1362.00

AQEU

GENMAB A/S

26-Mar-25

3:07:55 PM

2

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:08:23 PM

7

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:08:23 PM

3

1362.00

TQEX

GENMAB A/S

26-Mar-25

3:08:23 PM

20

1362.00

TQEX

GENMAB A/S

26-Mar-25

3:08:58 PM

10

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:08:59 PM

10

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:09:01 PM

38

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:09:01 PM

1

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:09:01 PM

7

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:09:15 PM

6

1362.00

CEUX

GENMAB A/S

26-Mar-25

3:09:49 PM

35

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:10:05 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:10:05 PM

66

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:10:05 PM

15

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:10:05 PM

27

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:10:05 PM

71

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:10:05 PM

71

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:10:05 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:10:05 PM

36

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:10:05 PM

69

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:10:05 PM

1

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:10:05 PM

7

1360.00

TQEX

GENMAB A/S

26-Mar-25

3:10:05 PM

26

1361.00

TQEX

GENMAB A/S

26-Mar-25

3:10:05 PM

15

1362.00

TQEX

GENMAB A/S

26-Mar-25

3:10:05 PM

12

1362.00

TQEX

GENMAB A/S

26-Mar-25

3:10:05 PM

31

1362.00

AQEU

GENMAB A/S

26-Mar-25

3:10:05 PM

19

1361.00

AQEU

GENMAB A/S

26-Mar-25

3:10:08 PM

28

1360.50

CEUX

GENMAB A/S

26-Mar-25

3:10:28 PM

7

1360.00

CEUX

GENMAB A/S

26-Mar-25

3:10:31 PM

20

1360.00

CEUX

GENMAB A/S

26-Mar-25

3:10:53 PM

2

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:11:23 PM

70

1362.00

CEUX

GENMAB A/S

26-Mar-25

3:11:37 PM

10

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:11:37 PM

18

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:11:37 PM

11

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:11:37 PM

72

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:11:37 PM

42

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:11:44 PM

42

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:11:44 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:11:44 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:11:45 PM

11

1362.50

XCSE

38

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:11:45 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:11:45 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:11:45 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:11:45 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:12:12 PM

20

1362.00

AQEU

GENMAB A/S

26-Mar-25

3:12:17 PM

24

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:12:17 PM

24

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:12:17 PM

6

1362.00

AQEU

GENMAB A/S

26-Mar-25

3:12:30 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:12:30 PM

42

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:12:30 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:12:30 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:12:31 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:12:31 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:13:15 PM

2

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:50 PM

21

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:13:50 PM

1

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:13:50 PM

20

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:13:50 PM

32

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:13:58 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

30

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

42

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

12

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

12

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

70

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:13:58 PM

28

1362.50

TQEX

GENMAB A/S

26-Mar-25

3:13:59 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:59 PM

10

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:59 PM

10

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:13:59 PM

10

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:14:01 PM

12

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:15:10 PM

73

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:15:26 PM

4

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:15:26 PM

3

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:15:26 PM

74

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:15:26 PM

24

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:15:26 PM

27

1364.00

AQEU

GENMAB A/S

26-Mar-25

3:17:03 PM

71

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:18:23 PM

42

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:18:23 PM

2

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:18:23 PM

10

1364.50

XCSE

39

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:18:23 PM

11

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:18:23 PM

33

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:18:23 PM

73

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:18:23 PM

2

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:18:23 PM

25

1364.00

TQEX

GENMAB A/S

26-Mar-25

3:18:23 PM

8

1364.00

AQEU

GENMAB A/S

26-Mar-25

3:18:23 PM

15

1364.00

AQEU

GENMAB A/S

26-Mar-25

3:18:58 PM

5

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:18:59 PM

23

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:19:03 PM

36

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:19:05 PM

23

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:19:09 PM

22

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:19:26 PM

1

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:19:46 PM

12

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:19:46 PM

10

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:19:46 PM

13

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:19:53 PM

11

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:19:53 PM

2

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:20:02 PM

60

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:20:02 PM

14

1364.00

TQEX

GENMAB A/S

26-Mar-25

3:20:02 PM

17

1364.00

TQEX

GENMAB A/S

26-Mar-25

3:20:02 PM

33

1364.00

AQEU

GENMAB A/S

26-Mar-25

3:20:47 PM

26

1364.00

AQEU

GENMAB A/S

26-Mar-25

3:21:07 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

69

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

42

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

69

1363.50

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

2

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

22

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:21:07 PM

36

1362.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

4

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

3

1362.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

32

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

68

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

4

1362.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

25

1362.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

2

1362.00

CEUX

GENMAB A/S

26-Mar-25

3:21:07 PM

9

1363.00

TQEX

GENMAB A/S

26-Mar-25

3:21:07 PM

16

1363.00

TQEX

GENMAB A/S

26-Mar-25

3:21:29 PM

10

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:21:44 PM

4

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:22:00 PM

24

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:22:00 PM

23

1363.50

CEUX

40

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:22:00 PM

10

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:22:00 PM

25

1363.00

AQEU

GENMAB A/S

26-Mar-25

3:22:33 PM

31

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:22:33 PM

69

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:22:33 PM

10

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:22:33 PM

10

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:23:02 PM

12

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:24:03 PM

69

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:24:13 PM

23

1363.50

TQEX

GENMAB A/S

26-Mar-25

3:25:26 PM

3

1363.50

XCSE

GENMAB A/S

26-Mar-25

3:25:26 PM

9

1363.50

XCSE

GENMAB A/S

26-Mar-25

3:25:26 PM

1

1363.50

XCSE

GENMAB A/S

26-Mar-25

3:25:26 PM

8

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:25:26 PM

15

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

30

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:37 PM

42

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:37 PM

1

1363.50

XCSE

GENMAB A/S

26-Mar-25

3:25:37 PM

12

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:37 PM

72

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:37 PM

33

1363.50

XCSE

GENMAB A/S

26-Mar-25

3:25:37 PM

10

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:37 PM

1

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

10

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

4

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

10

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

2

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

10

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

20

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:25:37 PM

4

1363.50

CEUX

GENMAB A/S

26-Mar-25

3:25:42 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:42 PM

12

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:42 PM

30

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:42 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:42 PM

11

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:42 PM

10

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:25:42 PM

22

1362.50

CEUX

GENMAB A/S

26-Mar-25

3:26:17 PM

30

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:26:17 PM

72

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:26:17 PM

42

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:26:17 PM

33

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:26:17 PM

36

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:26:17 PM

11

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:26:17 PM

11

1362.00

XCSE

GENMAB A/S

26-Mar-25

3:26:17 PM

65

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:26:17 PM

6

1361.50

CEUX

41

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:26:17 PM

25

1362.50

TQEX

GENMAB A/S

26-Mar-25

3:26:17 PM

44

1362.50

AQEU

GENMAB A/S

26-Mar-25

3:28:25 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:25 PM

4

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:28:31 PM

3

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

3

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

38

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

7

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:37 PM

15

1361.00

TQEX

GENMAB A/S

26-Mar-25

3:28:37 PM

1

1361.00

TQEX

GENMAB A/S

26-Mar-25

3:28:37 PM

10

1361.00

TQEX

GENMAB A/S

26-Mar-25

3:28:38 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:38 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:38 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:38 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:38 PM

30

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:39 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:28:44 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:03 PM

12

1361.00

CEUX

GENMAB A/S

26-Mar-25

3:29:03 PM

15

1361.00

CEUX

GENMAB A/S

26-Mar-25

3:29:20 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:20 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:20 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:20 PM

24

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:20 PM

16

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:20 PM

38

1361.00

CEUX

GENMAB A/S

26-Mar-25

3:29:20 PM

6

1361.00

CEUX

GENMAB A/S

26-Mar-25

3:29:21 PM

40

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

40

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

40

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

4

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:21 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:29:23 PM

71

1360.50

XCSE

42

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:29:35 PM

1

1360.50

AQEU

GENMAB A/S

26-Mar-25

3:29:47 PM

2

1361.50

CEUX

GENMAB A/S

26-Mar-25

3:30:05 PM

17

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:30:05 PM

71

1359.50

XCSE

GENMAB A/S

26-Mar-25

3:30:05 PM

69

1361.50

XCSE

GENMAB A/S

26-Mar-25

3:30:05 PM

28

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:30:05 PM

30

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:30:05 PM

72

1360.00

CEUX

GENMAB A/S

26-Mar-25

3:30:05 PM

17

1359.50

CEUX

GENMAB A/S

26-Mar-25

3:30:05 PM

50

1359.50

CEUX

GENMAB A/S

26-Mar-25

3:30:05 PM

75

1361.00

CEUX

GENMAB A/S

26-Mar-25

3:30:05 PM

7

1359.50

CEUX

GENMAB A/S

26-Mar-25

3:30:05 PM

23

1361.00

TQEX

GENMAB A/S

26-Mar-25

3:30:05 PM

3

1359.50

TQEX

GENMAB A/S

26-Mar-25

3:30:05 PM

31

1361.50

AQEU

GENMAB A/S

26-Mar-25

3:31:40 PM

18

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:01 PM

4

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:01 PM

18

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:01 PM

30

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:01 PM

42

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:01 PM

1

1360.00

XCSE

GENMAB A/S

26-Mar-25

3:32:01 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

3:32:01 PM

23

1360.50

TQEX

GENMAB A/S

26-Mar-25

3:32:01 PM

1

1360.50

AQEU

GENMAB A/S

26-Mar-25

3:32:01 PM

27

1360.50

AQEU

GENMAB A/S

26-Mar-25

3:32:02 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

42

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

26

1360.50

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

32

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

6

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

42

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:02 PM

12

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:04 PM

18

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:04 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:04 PM

42

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:04 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:04 PM

12

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:11 PM

12

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:11 PM

12

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:11 PM

42

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:11 PM

17

1361.00

XCSE

43

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:32:11 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:26 PM

12

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:26 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:26 PM

21

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:32:26 PM

25

1361.00

XCSE

GENMAB A/S

26-Mar-25

3:34:27 PM

73

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:34:27 PM

70

1363.00

CEUX

GENMAB A/S

26-Mar-25

3:34:56 PM

70

1363.00

XCSE

GENMAB A/S

26-Mar-25

3:36:25 PM

2

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:36:26 PM

2

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:36:27 PM

3

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:36:52 PM

6

1364.00

AQEU

GENMAB A/S

26-Mar-25

3:37:11 PM

36

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:38:20 PM

42

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:38:20 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:38:20 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:38:20 PM

13

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:38:20 PM

29

1366.00

TQEX

GENMAB A/S

26-Mar-25

3:38:20 PM

14

1365.00

TQEX

GENMAB A/S

26-Mar-25

3:39:37 PM

74

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:39:49 PM

13

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:39:49 PM

3

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:40:00 PM

35

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:40:00 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:40:00 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:40:00 PM

50

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:40:00 PM

20

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:40:00 PM

9

1365.00

TQEX

GENMAB A/S

26-Mar-25

3:40:00 PM

24

1366.00

TQEX

GENMAB A/S

26-Mar-25

3:40:00 PM

36

1366.00

AQEU

GENMAB A/S

26-Mar-25

3:40:29 PM

10

1365.00

AQEU

GENMAB A/S

26-Mar-25

3:41:26 PM

8

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:41:57 PM

2

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:41:57 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:41:57 PM

4

1365.50

CEUX

GENMAB A/S

26-Mar-25

3:42:25 PM

1

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:42:25 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:42:25 PM

2

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:42:25 PM

1

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:42:27 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:42:27 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:42:27 PM

2

1365.50

CEUX

GENMAB A/S

26-Mar-25

3:42:28 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:42:28 PM

5

1365.50

CEUX

GENMAB A/S

26-Mar-25

3:42:37 PM

94

1365.50

XCSE

44

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:43:26 PM

2

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:44:26 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:44:26 PM

36

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:44:27 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:44:27 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:44:27 PM

2

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:44:27 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:44:27 PM

4

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:44:27 PM

4

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

42

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:44:49 PM

12

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:44:49 PM

72

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:44:49 PM

29

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:44:49 PM

69

1364.00

XCSE

GENMAB A/S

26-Mar-25

3:44:49 PM

11

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:44:49 PM

7

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

5

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

8

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

6

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

2

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

7

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

8

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

18

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

15

1365.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

5

1364.50

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

2

1364.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

59

1365.00

CEUX

GENMAB A/S

26-Mar-25

3:44:49 PM

9

1364.00

TQEX

GENMAB A/S

26-Mar-25

3:44:49 PM

7

1364.00

TQEX

GENMAB A/S

26-Mar-25

3:44:49 PM

23

1364.00

TQEX

GENMAB A/S

26-Mar-25

3:44:49 PM

25

1365.50

TQEX

GENMAB A/S

26-Mar-25

3:44:49 PM

13

1365.00

AQEU

GENMAB A/S

26-Mar-25

3:44:50 PM

20

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:44:51 PM

50

1364.50

XCSE

GENMAB A/S

26-Mar-25

3:45:20 PM

3

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:45:20 PM

55

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:45:20 PM

17

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:45:20 PM

36

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:45:20 PM

37

1366.00

AQEU

GENMAB A/S

26-Mar-25

3:46:08 PM

72

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:46:08 PM

34

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:46:08 PM

40

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:46:20 PM

72

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:46:20 PM

71

1367.50

CEUX

GENMAB A/S

26-Mar-25

3:46:20 PM

24

1367.50

TQEX

45

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:46:27 PM

9

1367.50

CEUX

GENMAB A/S

26-Mar-25

3:46:58 PM

8

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:46:58 PM

14

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:46:58 PM

42

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:46:58 PM

30

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:46:58 PM

75

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:46:58 PM

36

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:46:58 PM

20

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:46:58 PM

36

1367.50

CEUX

GENMAB A/S

26-Mar-25

3:46:58 PM

4

1367.50

CEUX

GENMAB A/S

26-Mar-25

3:46:58 PM

50

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:46:58 PM

17

1367.00

AQEU

GENMAB A/S

26-Mar-25

3:46:58 PM

6

1367.00

AQEU

GENMAB A/S

26-Mar-25

3:46:59 PM

42

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:46:59 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:46:59 PM

22

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:46:59 PM

4

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:46:59 PM

5

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:47:25 PM

2

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:47:25 PM

3

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:47:25 PM

3

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:05 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:05 PM

11

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:48:05 PM

40

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:05 PM

10

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:48:05 PM

2

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:48:05 PM

10

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:48:05 PM

45

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:05 PM

24

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:05 PM

40

1367.00

TQEX

GENMAB A/S

26-Mar-25

3:48:05 PM

13

1367.00

AQEU

GENMAB A/S

26-Mar-25

3:48:05 PM

10

1367.00

AQEU

GENMAB A/S

26-Mar-25

3:48:11 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:11 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:11 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:11 PM

4

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:11 PM

36

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:11 PM

5

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:14 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:14 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:14 PM

4

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:14 PM

36

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:14 PM

4

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:48:23 PM

3

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:23 PM

7

1367.00

XCSE

46

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:48:23 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:23 PM

42

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:23 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:24 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:24 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:24 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:24 PM

7

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:24 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:25 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:26 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:26 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:26 PM

41

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:26 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:26 PM

4

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:48:26 PM

5

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:48:27 PM

12

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:48:28 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:28 PM

42

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:28 PM

1

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:28 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:29 PM

70

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:48:29 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:29 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:29 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:48:29 PM

8

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:48:29 PM

36

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:48:29 PM

25

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:48:29 PM

4

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:48:29 PM

63

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:48:29 PM

5

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:48:29 PM

12

1366.00

AQEU

GENMAB A/S

26-Mar-25

3:48:29 PM

11

1366.00

AQEU

GENMAB A/S

26-Mar-25

3:49:26 PM

2

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:49:38 PM

27

1366.00

AQEU

GENMAB A/S

26-Mar-25

3:49:40 PM

29

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:49:40 PM

25

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:49:44 PM

12

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:49:44 PM

12

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:49:44 PM

10

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:49:44 PM

10

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:49:44 PM

1

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:50:14 PM

2

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

21

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

16

1365.00

XCSE

47

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:50:50 PM

2

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

55

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

5

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

59

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

34

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

10

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

42

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

45

1365.00

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

3:50:50 PM

65

1365.00

CEUX

GENMAB A/S

26-Mar-25

3:50:50 PM

5

1365.00

CEUX

GENMAB A/S

26-Mar-25

3:50:50 PM

24

1364.50

AQEU

GENMAB A/S

26-Mar-25

3:51:52 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:51:52 PM

2

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:51:52 PM

11

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:51:52 PM

41

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:04 PM

42

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:04 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:04 PM

42

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:04 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:04 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:05 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:05 PM

12

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:05 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:05 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:07 PM

11

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:07 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:08 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:08 PM

11

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:14 PM

11

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:14 PM

42

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:14 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:15 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:15 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:21 PM

12

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:21 PM

11

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:24 PM

4

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:52:49 PM

12

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:53:32 PM

74

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:53:32 PM

9

1366.50

TQEX

GENMAB A/S

26-Mar-25

3:53:32 PM

23

1366.50

TQEX

GENMAB A/S

26-Mar-25

3:53:32 PM

43

1366.50

AQEU

GENMAB A/S

26-Mar-25

3:53:59 PM

36

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:06 PM

9

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:06 PM

94

1367.00

XCSE

48

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:54:06 PM

34

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:06 PM

9

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:06 PM

42

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:07 PM

94

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:07 PM

94

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:07 PM

94

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:08 PM

38

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:08 PM

11

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:08 PM

11

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:08 PM

14

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:08 PM

94

1367.00

XCSE

GENMAB A/S

26-Mar-25

3:54:08 PM

36

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:08 PM

5

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:08 PM

23

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:09 PM

4

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:09 PM

4

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:14 PM

8

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:14 PM

65

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:14 PM

10

1366.50

XCSE

GENMAB A/S

26-Mar-25

3:54:14 PM

36

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:14 PM

2

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:54:26 PM

4

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:26 PM

30

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:54:26 PM

23

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:55:26 PM

10

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:55:30 PM

36

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:55:40 PM

22

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:55:45 PM

66

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:56:03 PM

13

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:56:13 PM

32

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:56:14 PM

4

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:56:14 PM

5

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:56:21 PM

2

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:56:21 PM

71

1366.00

CEUX

GENMAB A/S

26-Mar-25

3:56:25 PM

2

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:25 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:25 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:25 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:26 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:26 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:27 PM

20

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:27 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:27 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:27 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:27 PM

12

1366.00

XCSE

49

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

3:56:34 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:34 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:56:34 PM

1

1366.00

XCSE

GENMAB A/S

26-Mar-25

3:58:05 PM

12

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:58:05 PM

8

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:58:05 PM

10

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:58:05 PM

12

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:58:06 PM

10

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:58:09 PM

59

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:58:34 PM

45

1367.00

CEUX

GENMAB A/S

26-Mar-25

3:59:12 PM

34

1366.50

CEUX

GENMAB A/S

26-Mar-25

3:59:59 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:59:59 PM

49

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:59:59 PM

11

1367.50

XCSE

GENMAB A/S

26-Mar-25

3:59:59 PM

9

1367.50

CEUX

GENMAB A/S

26-Mar-25

3:59:59 PM

24

1367.50

CEUX

GENMAB A/S

26-Mar-25

3:59:59 PM

27

1367.50

CEUX

GENMAB A/S

26-Mar-25

3:59:59 PM

6

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:00:00 PM

10

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:00:00 PM

10

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:00:03 PM

65

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:00:03 PM

2

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:00:03 PM

16

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:00:03 PM

58

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:00:04 PM

30

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:00:05 PM

1

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:00:05 PM

1

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:00:09 PM

18

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:01:00 PM

71

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:01:01 PM

65

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:01:01 PM

12

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:01:01 PM

17

1368.50

AQEU

GENMAB A/S

26-Mar-25

4:01:01 PM

13

1368.50

AQEU

GENMAB A/S

26-Mar-25

4:01:25 PM

32

1368.50

CEUX

GENMAB A/S

26-Mar-25

4:01:26 PM

23

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:01:28 PM

12

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:01:28 PM

10

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:01:28 PM

9

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:01 PM

2

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:01 PM

24

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:01 PM

39

1369.00

CEUX

GENMAB A/S

26-Mar-25

4:02:01 PM

34

1369.00

CEUX

GENMAB A/S

26-Mar-25

4:02:01 PM

41

1369.00

TQEX

GENMAB A/S

26-Mar-25

4:02:01 PM

34

1369.00

AQEU

GENMAB A/S

26-Mar-25

4:02:12 PM

30

1369.00

XCSE

50

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:02:12 PM

41

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:02:12 PM

39

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:12 PM

25

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:12 PM

34

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:02:34 PM

58

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:34 PM

10

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:34 PM

26

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:34 PM

23

1368.50

CEUX

GENMAB A/S

26-Mar-25

4:02:36 PM

11

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:02:36 PM

12

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:03:13 PM

26

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:03:13 PM

12

1369.00

XCSE

GENMAB A/S

26-Mar-25

4:03:13 PM

72

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:03:26 PM

29

1368.50

CEUX

GENMAB A/S

26-Mar-25

4:03:27 PM

2

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:03:41 PM

50

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:03:41 PM

22

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:03:41 PM

50

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:03:41 PM

1

1368.00

CEUX

GENMAB A/S

26-Mar-25

4:03:41 PM

73

1368.00

CEUX

GENMAB A/S

26-Mar-25

4:03:41 PM

15

1368.00

TQEX

GENMAB A/S

26-Mar-25

4:03:41 PM

21

1368.00

TQEX

GENMAB A/S

26-Mar-25

4:03:41 PM

30

1368.00

AQEU

GENMAB A/S

26-Mar-25

4:03:56 PM

1

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:03:56 PM

69

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:03:56 PM

22

1367.00

TQEX

GENMAB A/S

26-Mar-25

4:03:56 PM

33

1367.50

AQEU

GENMAB A/S

26-Mar-25

4:03:57 PM

9

1367.00

TQEX

GENMAB A/S

26-Mar-25

4:04:05 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:05 PM

64

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:05 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:05 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:06 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:06 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:06 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:06 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:06 PM

1

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:04:06 PM

1

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:04:07 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:07 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:07 PM

75

1366.50

XCSE

GENMAB A/S

26-Mar-25

4:04:07 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:07 PM

2

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:07 PM

10

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:07 PM

10

1367.00

XCSE

51

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:04:07 PM

34

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:04:08 PM

25

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

34

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

30

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

13

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

25

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:08 PM

15

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:09 PM

52

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:09 PM

12

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:09 PM

19

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:09 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:15 PM

7

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:15 PM

65

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:15 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:15 PM

11

1367.00

XCSE

GENMAB A/S

26-Mar-25

4:04:22 PM

1

1365.50

CEUX

GENMAB A/S

26-Mar-25

4:04:22 PM

35

1366.00

TQEX

GENMAB A/S

26-Mar-25

4:05:26 PM

10

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:05:26 PM

49

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:06:21 PM

34

1368.00

AQEU

GENMAB A/S

26-Mar-25

4:06:26 PM

24

1368.00

CEUX

GENMAB A/S

26-Mar-25

4:06:26 PM

30

1368.00

CEUX

GENMAB A/S

26-Mar-25

4:06:48 PM

10

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:06:48 PM

2

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:06:48 PM

11

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:06:48 PM

37

1368.50

XCSE

GENMAB A/S

26-Mar-25

4:07:03 PM

47

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:07:03 PM

25

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:07:03 PM

42

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:07:03 PM

27

1367.50

TQEX

GENMAB A/S

26-Mar-25

4:07:03 PM

15

1367.50

TQEX

GENMAB A/S

26-Mar-25

4:07:25 PM

4

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:08:13 PM

2

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:08:13 PM

23

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:08:15 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:08:15 PM

2

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:08:15 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:08:15 PM

36

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:08:20 PM

3

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:08:29 PM

23

1367.50

AQEU

GENMAB A/S

26-Mar-25

4:08:31 PM

11

1367.50

XCSE

52

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:08:31 PM

12

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:08:31 PM

36

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:08:31 PM

4

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:09:26 PM

74

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:09:26 PM

2

1367.50

XCSE

GENMAB A/S

26-Mar-25

4:09:26 PM

75

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:09:26 PM

52

1367.50

CEUX

GENMAB A/S

26-Mar-25

4:09:26 PM

27

1367.50

TQEX

GENMAB A/S

26-Mar-25

4:10:24 PM

1

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:10:25 PM

1

1366.50

XCSE

GENMAB A/S

26-Mar-25

4:10:30 PM

1

1367.00

TQEX

GENMAB A/S

26-Mar-25

4:10:30 PM

6

1367.00

TQEX

GENMAB A/S

26-Mar-25

4:10:30 PM

27

1367.00

TQEX

GENMAB A/S

26-Mar-25

4:10:47 PM

36

1367.00

CEUX

GENMAB A/S

26-Mar-25

4:10:47 PM

29

1367.00

CEUX

GENMAB A/S

26-Mar-25

4:10:47 PM

40

1367.00

AQEU

GENMAB A/S

26-Mar-25

4:10:51 PM

1

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:10:56 PM

34

1366.50

XCSE

GENMAB A/S

26-Mar-25

4:10:56 PM

8

1366.50

XCSE

GENMAB A/S

26-Mar-25

4:10:56 PM

26

1366.50

XCSE

GENMAB A/S

26-Mar-25

4:10:56 PM

9

1366.50

CEUX

GENMAB A/S

26-Mar-25

4:11:37 PM

54

1365.50

CEUX

GENMAB A/S

26-Mar-25

4:11:37 PM

11

1365.50

CEUX

GENMAB A/S

26-Mar-25

4:11:38 PM

3

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:11:38 PM

25

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:11:38 PM

7

1365.50

CEUX

GENMAB A/S

26-Mar-25

4:12:12 PM

1

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

50

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

8

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

48

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

6

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:12 PM

44

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

1

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

48

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

3

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

9

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

10

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

12

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

3

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:13 PM

9

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:15 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:15 PM

10

1366.00

XCSE

53

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:12:18 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:18 PM

11

1366.00

XCSE

GENMAB A/S

26-Mar-25

4:12:18 PM

2

1366.00

CEUX

GENMAB A/S

26-Mar-25

4:12:18 PM

12

1366.00

CEUX

GENMAB A/S

26-Mar-25

4:12:18 PM

33

1366.00

CEUX

GENMAB A/S

26-Mar-25

4:12:18 PM

6

1366.00

CEUX

GENMAB A/S

26-Mar-25

4:13:05 PM

41

1365.50

CEUX

GENMAB A/S

26-Mar-25

4:13:05 PM

34

1365.50

CEUX

GENMAB A/S

26-Mar-25

4:13:11 PM

24

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:11 PM

22

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:11 PM

48

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

1

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

5

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:12 PM

30

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:13 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:13 PM

3

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:13 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:14 PM

3

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:14 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:14 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:14 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:14 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:14 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:14 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:16 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:16 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:16 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:16 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:18 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:19 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:22 PM

75

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:22 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:22 PM

32

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:22 PM

50

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:23 PM

34

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:23 PM

31

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:23 PM

23

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:23 PM

18

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:23 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:13:23 PM

10

1365.50

XCSE

54

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:13:23 PM

36

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

1

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

42

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

35

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

13

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

23

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

35

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

11

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:26 PM

12

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:27 PM

10

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:27 PM

10

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:35 PM

2

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:35 PM

17

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:13:44 PM

27

1365.00

CEUX

GENMAB A/S

26-Mar-25

4:13:44 PM

20

1365.00

CEUX

GENMAB A/S

26-Mar-25

4:13:45 PM

10

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:14:26 PM

2

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:14:26 PM

29

1365.00

CEUX

GENMAB A/S

26-Mar-25

4:14:31 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:14:31 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:14:33 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:14:33 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:01 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:01 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:03 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:03 PM

2

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:03 PM

7

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:04 PM

9

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:11 PM

1

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:11 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:12 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:12 PM

48

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:12 PM

11

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:16 PM

10

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:16 PM

48

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:19 PM

12

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:23 PM

23

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:24 PM

1

1365.50

XCSE

GENMAB A/S

26-Mar-25

4:15:24 PM

20

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:15:24 PM

51

1365.00

XCSE

GENMAB A/S

26-Mar-25

4:15:24 PM

73

1365.00

CEUX

GENMAB A/S

26-Mar-25

4:15:24 PM

1

1365.00

AQEU

GENMAB A/S

26-Mar-25

4:15:24 PM

7

1365.00

AQEU

GENMAB A/S

26-Mar-25

4:15:25 PM

8

1364.00

XCSE

GENMAB A/S

26-Mar-25

4:15:25 PM

10

1364.00

CEUX

55

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:15:25 PM

10

1364.00

CEUX

GENMAB A/S

26-Mar-25

4:15:25 PM

2

1364.00

CEUX

GENMAB A/S

26-Mar-25

4:15:25 PM

6

1365.00

AQEU

GENMAB A/S

26-Mar-25

4:15:25 PM

9

1365.00

AQEU

GENMAB A/S

26-Mar-25

4:16:10 PM

61

1364.00

XCSE

GENMAB A/S

26-Mar-25

4:16:10 PM

10

1364.50

XCSE

GENMAB A/S

26-Mar-25

4:16:10 PM

50

1364.00

CEUX

GENMAB A/S

26-Mar-25

4:16:10 PM

34

1364.00

TQEX

GENMAB A/S

26-Mar-25

4:16:10 PM

10

1364.50

AQEU

GENMAB A/S

26-Mar-25

4:16:14 PM

7

1364.50

AQEU

GENMAB A/S

26-Mar-25

4:16:26 PM

5

1364.00

CEUX

GENMAB A/S

26-Mar-25

4:16:39 PM

73

1364.00

XCSE

GENMAB A/S

26-Mar-25

4:16:39 PM

37

1364.00

CEUX

GENMAB A/S

26-Mar-25

4:16:39 PM

34

1364.00

CEUX

GENMAB A/S

26-Mar-25

4:16:39 PM

26

1364.00

TQEX

GENMAB A/S

26-Mar-25

4:16:55 PM

48

1364.00

XCSE

GENMAB A/S

26-Mar-25

4:16:55 PM

11

1364.00

XCSE

GENMAB A/S

26-Mar-25

4:17:12 PM

71

1363.00

XCSE

GENMAB A/S

26-Mar-25

4:17:12 PM

68

1363.50

CEUX

GENMAB A/S

26-Mar-25

4:17:12 PM

25

1362.50

CEUX

GENMAB A/S

26-Mar-25

4:17:12 PM

31

1362.50

CEUX

GENMAB A/S

26-Mar-25

4:17:12 PM

7

1362.50

CEUX

GENMAB A/S

26-Mar-25

4:17:12 PM

10

1362.50

CEUX

GENMAB A/S

26-Mar-25

4:17:12 PM

41

1363.50

AQEU

GENMAB A/S

26-Mar-25

4:17:24 PM

27

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:17:24 PM

32

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:17:24 PM

8

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:17:24 PM

2

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:17:30 PM

2

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:17:30 PM

26

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:17:30 PM

10

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:17:30 PM

26

1362.00

TQEX

GENMAB A/S

26-Mar-25

4:18:05 PM

33

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:18:05 PM

47

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

16

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

27

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

20

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

39

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

12

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

14

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

50

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

2

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

8

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:18:25 PM

69

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:18:25 PM

28

1360.00

CEUX

56

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:18:26 PM

23

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:18:26 PM

24

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:19:33 PM

25

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:19:52 PM

9

1359.50

CEUX

GENMAB A/S

26-Mar-25

4:19:52 PM

14

1359.50

CEUX

GENMAB A/S

26-Mar-25

4:20:05 PM

48

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:20:05 PM

3

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:20:05 PM

43

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:20:35 PM

2

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:20:35 PM

48

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:20:35 PM

8

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:20:50 PM

1

1359.00

XCSE

GENMAB A/S

26-Mar-25

4:21:25 PM

3

1359.50

AQEU

GENMAB A/S

26-Mar-25

4:21:30 PM

7

1359.50

AQEU

GENMAB A/S

26-Mar-25

4:22:16 PM

41

1360.50

TQEX

GENMAB A/S

26-Mar-25

4:22:40 PM

71

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:22:40 PM

72

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:22:41 PM

26

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:22:41 PM

48

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:22:55 PM

36

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:22:55 PM

36

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:22:55 PM

10

1360.50

AQEU

GENMAB A/S

26-Mar-25

4:22:56 PM

50

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:23:11 PM

4

1360.50

TQEX

GENMAB A/S

26-Mar-25

4:23:55 PM

23

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:23:55 PM

10

1360.50

AQEU

GENMAB A/S

26-Mar-25

4:23:56 PM

2

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:23:56 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:23:56 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:24:32 PM

9

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:24:32 PM

85

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:24:38 PM

5

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:24:57 PM

74

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:24:57 PM

36

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:24:57 PM

27

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:24:57 PM

1

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:24:57 PM

1

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:24:57 PM

27

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:25:04 PM

7

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:25:04 PM

17

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:25:09 PM

48

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:25:09 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:25:09 PM

32

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:25:09 PM

73

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:25:09 PM

10

1361.50

AQEU

57

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:25:09 PM

15

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:25:39 PM

14

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:25:39 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:25:40 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:26:25 PM

7

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:26:25 PM

3

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:26:25 PM

35

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:26:25 PM

32

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:27:21 PM

72

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:27:32 PM

10

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:27:34 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

28

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

48

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

8

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

3

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

16

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

50

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

1

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:27:34 PM

50

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:27:34 PM

21

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:27:34 PM

72

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:27:34 PM

2

1360.00

TQEX

GENMAB A/S

26-Mar-25

4:27:34 PM

4

1360.00

TQEX

GENMAB A/S

26-Mar-25

4:27:34 PM

23

1360.00

TQEX

GENMAB A/S

26-Mar-25

4:27:34 PM

2

1360.00

TQEX

GENMAB A/S

26-Mar-25

4:27:34 PM

13

1360.00

TQEX

GENMAB A/S

26-Mar-25

4:27:34 PM

27

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:27:58 PM

30

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:27:58 PM

43

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:27:58 PM

8

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:28:00 PM

7

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:28:00 PM

19

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:28:26 PM

44

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:28:32 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

10

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

39

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

10

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

24

1359.00

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

12

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

48

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

12

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

12

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

45

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:04 PM

39

1359.50

CEUX

GENMAB A/S

26-Mar-25

4:29:04 PM

1

1358.50

CEUX

58

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:29:05 PM

16

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:05 PM

12

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:05 PM

45

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:05 PM

9

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:05 PM

12

1359.50

XCSE

GENMAB A/S

26-Mar-25

4:29:07 PM

18

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:29:07 PM

53

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:29:26 PM

2

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:30:06 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:06 PM

6

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:06 PM

2

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:06 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:06 PM

14

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:06 PM

48

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

8

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

2

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

36

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

1

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

50

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

34

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

1

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

1

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

40

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

8

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:07 PM

38

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:30:08 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:30:08 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:30:08 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:30:23 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:23 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:23 PM

37

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:23 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:23 PM

35

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:23 PM

2

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:23 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:25 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:25 PM

11

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:35 PM

11

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:35 PM

12

1360.50

XCSE

59

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:30:45 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:45 PM

11

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:30:45 PM

36

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:30:59 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:30:59 PM

70

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:31:05 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:31:05 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:31:05 PM

25

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:31:05 PM

48

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:31:08 PM

25

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:31:11 PM

16

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:31:37 PM

15

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:31:44 PM

1

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:31:44 PM

5

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:32:24 PM

38

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:32:24 PM

1

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:32:25 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:33:23 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:23 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:23 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:23 PM

46

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:23 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:23 PM

34

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:23 PM

4

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:24 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:24 PM

23

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:24 PM

48

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:24 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:25 PM

48

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:33:25 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:34:08 PM

9

1362.00

TQEX

GENMAB A/S

26-Mar-25

4:34:08 PM

25

1362.00

TQEX

GENMAB A/S

26-Mar-25

4:34:14 PM

32

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:34:14 PM

38

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:34:14 PM

34

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:36:16 PM

75

1362.50

CEUX

GENMAB A/S

26-Mar-25

4:36:16 PM

28

1362.50

TQEX

GENMAB A/S

26-Mar-25

4:36:16 PM

33

1362.50

AQEU

GENMAB A/S

26-Mar-25

4:36:26 PM

22

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:26 PM

1

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:26 PM

48

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:26 PM

23

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:27 PM

23

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:27 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:27 PM

12

1362.50

XCSE

60

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:36:27 PM

48

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:29 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:29 PM

16

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:29 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:31 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:31 PM

13

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:31 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:32 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:32 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:32 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:32 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

35

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

48

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

7

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

30

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:36 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

31

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

41

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

40

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

3

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:37 PM

30

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:38 PM

45

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:38 PM

11

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:38 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:36:38 PM

26

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:37:05 PM

12

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:37:05 PM

9

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:37:05 PM

10

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:37:05 PM

30

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:37:05 PM

26

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:37:18 PM

2

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:37:18 PM

10

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:37:18 PM

38

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:37:25 PM

10

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:37:26 PM

22

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:37:27 PM

53

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:37:27 PM

28

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:37:27 PM

28

1362.00

CEUX

61

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:38:12 PM

30

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:38:26 PM

2

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:38:26 PM

43

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:38:29 PM

22

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:38:54 PM

38

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:38:54 PM

9

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:39:09 PM

38

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:39:18 PM

12

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:39:24 PM

11

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:39:24 PM

38

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:39:25 PM

74

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:39:25 PM

75

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:39:26 PM

3

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:39:26 PM

27

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:39:26 PM

38

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:39:26 PM

11

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:40:27 PM

3

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:40:27 PM

7

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:40:27 PM

23

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:40:27 PM

42

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:40:27 PM

3

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:40:27 PM

39

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:40:27 PM

38

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:40:27 PM

27

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:40:28 PM

25

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:40:28 PM

49

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:41:11 PM

1

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:11 PM

27

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:22 PM

17

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:41:25 PM

22

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:41:25 PM

26

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:41:35 PM

48

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

47

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

1

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

25

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:35 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:36 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:36 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:36 PM

48

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:36 PM

11

1361.50

XCSE

62

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:41:36 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:37 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:37 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:40 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:40 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:41 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:42 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:42 PM

24

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:42 PM

48

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:42 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:44 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:41:57 PM

39

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:42:25 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:42:35 PM

20

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:43:26 PM

41

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:43:26 PM

2

1362.00

XCSE

GENMAB A/S

26-Mar-25

4:43:26 PM

19

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:44:27 PM

7

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:44:29 PM

18

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:44:44 PM

9

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:45:04 PM

38

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:45:04 PM

12

1362.00

TQEX

GENMAB A/S

26-Mar-25

4:45:19 PM

26

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:46:35 PM

28

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:46:35 PM

46

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:46:35 PM

1

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:46:35 PM

70

1362.50

XCSE

GENMAB A/S

26-Mar-25

4:46:35 PM

72

1362.50

CEUX

GENMAB A/S

26-Mar-25

4:46:35 PM

38

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:46:35 PM

3

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

12

1362.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

2

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

8

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

15

1362.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

2

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

2

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

6

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

23

1362.50

TQEX

GENMAB A/S

26-Mar-25

4:46:35 PM

2

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:46:35 PM

22

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:46:36 PM

2

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:46:38 PM

29

1362.00

CEUX

GENMAB A/S

26-Mar-25

4:47:16 PM

46

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:47:36 PM

2

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:47:36 PM

12

1362.00

AQEU

63

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:47:36 PM

2

1362.00

AQEU

GENMAB A/S

26-Mar-25

4:47:40 PM

4

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:47:40 PM

5

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:47:41 PM

23

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:47:41 PM

28

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:47:41 PM

5

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:47:41 PM

5

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:48:04 PM

33

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:04 PM

38

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:48:04 PM

2

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:48:04 PM

2

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:48:04 PM

12

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:48:04 PM

2

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:48:04 PM

2

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:48:05 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:05 PM

8

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:09 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:09 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:09 PM

11

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:09 PM

2

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:48:09 PM

2

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:48:27 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:27 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:27 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:27 PM

21

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:27 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:27 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:27 PM

12

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:48:27 PM

2

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:48:27 PM

7

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:48:27 PM

2

1361.50

TQEX

GENMAB A/S

26-Mar-25

4:48:27 PM

2

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:48:27 PM

2

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:48:27 PM

11

1361.50

AQEU

GENMAB A/S

26-Mar-25

4:48:29 PM

12

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:29 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:36 PM

5

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:48:37 PM

4

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:48:43 PM

2

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:43 PM

10

1361.50

XCSE

GENMAB A/S

26-Mar-25

4:48:43 PM

4

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:48:43 PM

92

1361.50

CEUX

GENMAB A/S

26-Mar-25

4:48:43 PM

9

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:48:43 PM

16

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:48:44 PM

9

1361.00

XCSE

64

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:48:44 PM

42

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

34

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

48

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

6

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

39

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

29

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

4

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

5

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:48:44 PM

38

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:44 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:44 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:44 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:44 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

10

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

2

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

12

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

38

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:45 PM

12

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:48:46 PM

41

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:49:05 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:49:05 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:49:05 PM

38

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:49:11 PM

61

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:49:11 PM

8

1360.50

TQEX

GENMAB A/S

26-Mar-25

4:49:11 PM

25

1360.50

TQEX

GENMAB A/S

26-Mar-25

4:49:25 PM

57

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:49:40 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:49:40 PM

11

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:49:41 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:49:41 PM

10

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:50:01 PM

10

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:01 PM

5

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:01 PM

5

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:01 PM

2

1360.00

AQEU

GENMAB A/S

26-Mar-25

4:50:01 PM

2

1360.00

AQEU

GENMAB A/S

26-Mar-25

4:50:02 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:02 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:11 PM

4

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:11 PM

1

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:11 PM

3

1360.00

XCSE

65

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:50:11 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:11 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:11 PM

11

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:11 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:11 PM

9

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:11 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:12 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:12 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:12 PM

11

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:12 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:12 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:12 PM

9

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:12 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:12 PM

5

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:13 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:15 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:15 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:17 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:17 PM

39

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:18 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:18 PM

11

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:19 PM

11

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:19 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:19 PM

39

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:20 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:20 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:20 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:20 PM

4

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:20 PM

5

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:21 PM

2

1360.00

AQEU

GENMAB A/S

26-Mar-25

4:50:22 PM

10

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:22 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:22 PM

11

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:23 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:23 PM

12

1360.00

XCSE

GENMAB A/S

26-Mar-25

4:50:23 PM

10

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:23 PM

5

1360.00

CEUX

GENMAB A/S

26-Mar-25

4:50:23 PM

8

1360.00

TQEX

GENMAB A/S

26-Mar-25

4:50:23 PM

12

1360.00

AQEU

GENMAB A/S

26-Mar-25

4:50:23 PM

7

1360.00

AQEU

GENMAB A/S

26-Mar-25

4:50:23 PM

2

1360.00

AQEU

GENMAB A/S

26-Mar-25

4:50:23 PM

2

1360.00

AQEU

GENMAB A/S

26-Mar-25

4:51:03 PM

62

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:51:03 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:51:07 PM

74

1361.00

CEUX

66

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:51:24 PM

27

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:51:25 PM

55

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:51:41 PM

70

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:51:41 PM

71

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:51:41 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:51:41 PM

29

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:52:00 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

3

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

23

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

48

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

6

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

2

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:00 PM

11

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:52:00 PM

12

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:52:03 PM

9

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:06 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:06 PM

12

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:06 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:52:06 PM

2

1361.00

AQEU

GENMAB A/S

26-Mar-25

4:52:13 PM

4

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:52:13 PM

2

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:52:27 PM

26

1360.50

AQEU

GENMAB A/S

26-Mar-25

4:53:11 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:11 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:11 PM

3

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:11 PM

48

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:11 PM

94

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:11 PM

3

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:11 PM

6

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:12 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:12 PM

10

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:12 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:12 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:12 PM

48

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:42 PM

10

1360.50

AQEU

GENMAB A/S

26-Mar-25

4:53:55 PM

22

1360.50

AQEU

GENMAB A/S

26-Mar-25

4:53:57 PM

12

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:53:57 PM

24

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:53:57 PM

11

1360.50

XCSE

GENMAB A/S

26-Mar-25

4:53:57 PM

5

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:53:57 PM

5

1360.50

CEUX

GENMAB A/S

26-Mar-25

4:53:57 PM

2

1360.50

TQEX

GENMAB A/S

26-Mar-25

4:53:57 PM

20

1360.50

AQEU

67

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

26-Mar-25

4:53:57 PM

2

1360.50

AQEU

GENMAB A/S

26-Mar-25

4:53:58 PM

12

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:58 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:58 PM

11

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:53:58 PM

35

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:53:58 PM

5

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:53:58 PM

4

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:53:58 PM

15

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:53:58 PM

4

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:54:05 PM

75

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:54:05 PM

75

1361.00

CEUX

GENMAB A/S

26-Mar-25

4:54:10 PM

42

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:54:10 PM

33

1361.00

TQEX

GENMAB A/S

26-Mar-25

4:54:29 PM

10

1360.50

AQEU

GENMAB A/S

26-Mar-25

4:54:32 PM

75

1361.00

XCSE

GENMAB A/S

26-Mar-25

4:54:37 PM

25

1361.50

CEUX

GENMAB A/S

27-Mar-25

9:42:33 AM

49

1344.50

XCSE

GENMAB A/S

27-Mar-25

9:43:04 AM

69

1345.00

TQEX

GENMAB A/S

27-Mar-25

9:43:31 AM

24

1344.50

XCSE

GENMAB A/S

27-Mar-25

9:43:32 AM

70

1344.00

TQEX

GENMAB A/S

27-Mar-25

9:43:36 AM

70

1343.50

XCSE

GENMAB A/S

27-Mar-25

9:43:36 AM

64

1343.50

CEUX

GENMAB A/S

27-Mar-25

9:43:36 AM

65

1343.50

AQEU

GENMAB A/S

27-Mar-25

9:44:02 AM

3

1344.50

XCSE

GENMAB A/S

27-Mar-25

9:44:02 AM

18

1344.50

XCSE

GENMAB A/S

27-Mar-25

9:44:02 AM

11

1344.50

XCSE

GENMAB A/S

27-Mar-25

9:44:02 AM

23

1344.50

CEUX

GENMAB A/S

27-Mar-25

9:44:02 AM

22

1344.50

TQEX

GENMAB A/S

27-Mar-25

9:44:02 AM

24

1344.50

AQEU

GENMAB A/S

27-Mar-25

9:44:39 AM

8

1343.50

XCSE

GENMAB A/S

27-Mar-25

9:45:08 AM

16

1343.50

XCSE

GENMAB A/S

27-Mar-25

9:45:08 AM

51

1343.50

CEUX

GENMAB A/S

27-Mar-25

9:45:08 AM

14

1343.50

TQEX

GENMAB A/S

27-Mar-25

9:45:08 AM

45

1343.50

AQEU

GENMAB A/S

27-Mar-25

9:45:32 AM

31

1342.50

XCSE

GENMAB A/S

27-Mar-25

9:45:32 AM

75

1342.50

AQEU

GENMAB A/S

27-Mar-25

9:45:51 AM

28

1342.00

CEUX

GENMAB A/S

27-Mar-25

9:45:51 AM

44

1342.00

CEUX

GENMAB A/S

27-Mar-25

9:48:05 AM

2

1342.00

CEUX

GENMAB A/S

27-Mar-25

9:49:12 AM

12

1343.00

CEUX

GENMAB A/S

27-Mar-25

9:49:20 AM

46

1343.00

CEUX

GENMAB A/S

27-Mar-25

9:51:12 AM

57

1343.50

XCSE

GENMAB A/S

27-Mar-25

9:51:12 AM

20

1343.50

XCSE

GENMAB A/S

27-Mar-25

9:52:29 AM

75

1343.50

XCSE

GENMAB A/S

27-Mar-25

9:52:29 AM

35

1343.50

TQEX

68

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

9:53:16 AM

74

1343.50

XCSE

GENMAB A/S

27-Mar-25

9:53:16 AM

11

1343.00

CEUX

GENMAB A/S

27-Mar-25

9:53:16 AM

18

1343.00

CEUX

GENMAB A/S

27-Mar-25

9:54:42 AM

46

1343.00

CEUX

GENMAB A/S

27-Mar-25

9:55:22 AM

10

1343.00

CEUX

GENMAB A/S

27-Mar-25

9:59:07 AM

32

1345.50

CEUX

GENMAB A/S

27-Mar-25

9:59:56 AM

44

1345.00

CEUX

GENMAB A/S

27-Mar-25

9:59:56 AM

29

1345.00

CEUX

GENMAB A/S

27-Mar-25

10:01:04 AM

73

1344.50

XCSE

GENMAB A/S

27-Mar-25

10:01:04 AM

1

1344.00

CEUX

GENMAB A/S

27-Mar-25

10:04:06 AM

13

1344.50

CEUX

GENMAB A/S

27-Mar-25

10:05:26 AM

74

1344.00

CEUX

GENMAB A/S

27-Mar-25

10:06:35 AM

1

1345.50

CEUX

GENMAB A/S

27-Mar-25

10:07:01 AM

66

1345.50

XCSE

GENMAB A/S

27-Mar-25

10:07:01 AM

9

1345.50

XCSE

GENMAB A/S

27-Mar-25

10:09:29 AM

33

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:29 AM

2

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:29 AM

43

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:29 AM

9

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:29 AM

9

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:41 AM

17

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:41 AM

16

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:41 AM

57

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:09:41 AM

8

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:10:00 AM

26

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:10:00 AM

12

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:10:00 AM

6

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:10:01 AM

10

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:10:45 AM

72

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:10:45 AM

73

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:12:02 AM

15

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:12:02 AM

3

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:12:02 AM

75

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:12:03 AM

16

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:12:10 AM

10

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:12:10 AM

4

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:12:10 AM

9

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:12:10 AM

10

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:12:13 AM

15

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:14:00 AM

16

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:14:00 AM

15

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:14:00 AM

38

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:14:00 AM

4

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:14:00 AM

21

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:14:00 AM

36

1347.00

CEUX

69

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

10:15:01 AM

51

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:01 AM

36

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:01 AM

72

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:01 AM

11

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:01 AM

6

1346.00

CEUX

GENMAB A/S

27-Mar-25

10:15:01 AM

36

1346.50

CEUX

GENMAB A/S

27-Mar-25

10:15:01 AM

71

1346.00

CEUX

GENMAB A/S

27-Mar-25

10:15:02 AM

30

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:02 AM

11

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:02 AM

49

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:02 AM

8

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:15:04 AM

15

1346.00

XCSE

GENMAB A/S

27-Mar-25

10:15:04 AM

7

1346.00

XCSE

GENMAB A/S

27-Mar-25

10:15:10 AM

19

1345.50

XCSE

GENMAB A/S

27-Mar-25

10:15:10 AM

59

1345.50

XCSE

GENMAB A/S

27-Mar-25

10:15:10 AM

20

1345.50

CEUX

GENMAB A/S

27-Mar-25

10:15:19 AM

36

1345.50

CEUX

GENMAB A/S

27-Mar-25

10:17:03 AM

7

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:20:08 AM

15

1347.00

TQEX

GENMAB A/S

27-Mar-25

10:20:28 AM

7

1347.00

TQEX

GENMAB A/S

27-Mar-25

10:21:45 AM

11

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:21:45 AM

5

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:21:45 AM

9

1347.00

XCSE

GENMAB A/S

27-Mar-25

10:21:45 AM

36

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:21:45 AM

5

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:21:46 AM

13

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:21:46 AM

30

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:21:46 AM

20

1347.00

CEUX

GENMAB A/S

27-Mar-25

10:22:53 AM

73

1346.50

XCSE

GENMAB A/S

27-Mar-25

10:22:53 AM

6

1346.50

CEUX

GENMAB A/S

27-Mar-25

10:24:43 AM

5

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:24:43 AM

5

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:24:43 AM

18

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:24:43 AM

5

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:25:04 AM

11

1347.50

CEUX

GENMAB A/S

27-Mar-25

10:27:16 AM

19

1349.50

XCSE

GENMAB A/S

27-Mar-25

10:27:16 AM

12

1349.50

XCSE

GENMAB A/S

27-Mar-25

10:27:16 AM

33

1349.50

XCSE

GENMAB A/S

27-Mar-25

10:27:16 AM

1

1349.50

CEUX

GENMAB A/S

27-Mar-25

10:27:16 AM

12

1349.50

CEUX

GENMAB A/S

27-Mar-25

10:29:47 AM

98

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:29:47 AM

46

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:29:47 AM

39

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:29:47 AM

13

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:29:47 AM

7

1350.00

CEUX

70

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

10:29:47 AM

12

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:30:18 AM

37

1349.50

XCSE

GENMAB A/S

27-Mar-25

10:30:18 AM

4

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:30:18 AM

43

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:30:18 AM

9

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:30:18 AM

43

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:30:18 AM

18

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:30:18 AM

36

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:31:53 AM

11

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:31:53 AM

3

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:31:53 AM

9

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:32:03 AM

3

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:32:24 AM

10

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:32:24 AM

4

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:32:24 AM

6

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:32:28 AM

26

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:32:28 AM

11

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:33:06 AM

34

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:34:10 AM

3

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:34:10 AM

21

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:34:10 AM

3

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:34:11 AM

28

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:34:12 AM

77

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:34:12 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:34:12 AM

57

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:34:12 AM

10

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:34:12 AM

42

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:34:13 AM

22

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:34:13 AM

16

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:34:21 AM

15

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:35:03 AM

11

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:35:07 AM

28

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:35:24 AM

16

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:35:26 AM

36

1351.50

TQEX

GENMAB A/S

27-Mar-25

10:35:27 AM

64

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:35:27 AM

10

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:38:23 AM

72

1350.50

XCSE

GENMAB A/S

27-Mar-25

10:38:23 AM

72

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:38:23 AM

31

1350.50

CEUX

GENMAB A/S

27-Mar-25

10:38:23 AM

1

1350.50

CEUX

GENMAB A/S

27-Mar-25

10:38:23 AM

36

1350.50

CEUX

GENMAB A/S

27-Mar-25

10:38:23 AM

37

1350.50

TQEX

GENMAB A/S

27-Mar-25

10:38:25 AM

54

1349.50

XCSE

GENMAB A/S

27-Mar-25

10:38:25 AM

19

1349.50

XCSE

GENMAB A/S

27-Mar-25

10:38:25 AM

25

1350.00

XCSE

71

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

10:38:25 AM

4

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:38:25 AM

5

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:38:25 AM

12

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:38:25 AM

4

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:38:25 AM

23

1349.50

TQEX

GENMAB A/S

27-Mar-25

10:38:52 AM

10

1349.50

XCSE

GENMAB A/S

27-Mar-25

10:41:39 AM

29

1350.00

TQEX

GENMAB A/S

27-Mar-25

10:42:14 AM

75

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:42:14 AM

28

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:42:14 AM

46

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:42:14 AM

25

1350.00

AQEU

GENMAB A/S

27-Mar-25

10:42:16 AM

10

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:42:16 AM

15

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:42:16 AM

13

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:42:16 AM

19

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:42:18 AM

1

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:42:24 AM

12

1350.00

CEUX

GENMAB A/S

27-Mar-25

10:45:19 AM

8

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:45:59 AM

66

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:45:59 AM

13

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:45:59 AM

48

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:45:59 AM

4

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:45:59 AM

72

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:45:59 AM

5

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:45:59 AM

30

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:45:59 AM

5

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:45:59 AM

34

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:45:59 AM

39

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:45:59 AM

31

1351.00

TQEX

GENMAB A/S

27-Mar-25

10:45:59 AM

22

1351.00

AQEU

GENMAB A/S

27-Mar-25

10:46:00 AM

36

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:00 AM

5

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:00 AM

4

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:00 AM

4

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:01 AM

31

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:01 AM

31

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:06 AM

22

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:07 AM

12

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:07 AM

5

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:07 AM

4

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:07 AM

5

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:07 AM

14

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:07 AM

17

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:07 AM

2

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:09 AM

3

1351.00

CEUX

72

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

10:46:14 AM

13

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:46:42 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:46:42 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:46:42 AM

10

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:46:42 AM

5

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:46:42 AM

4

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:46:42 AM

4

1352.00

CEUX

GENMAB A/S

27-Mar-25

10:49:33 AM

50

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:50:21 AM

30

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:50:21 AM

19

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:50:21 AM

13

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:51:40 AM

18

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:51:40 AM

2

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:51:41 AM

25

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:51:43 AM

15

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:51:44 AM

22

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:51:45 AM

4

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:51:48 AM

14

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:55:17 AM

76

1351.00

XCSE

GENMAB A/S

27-Mar-25

10:55:17 AM

77

1350.00

XCSE

GENMAB A/S

27-Mar-25

10:55:17 AM

77

1351.00

CEUX

GENMAB A/S

27-Mar-25

10:55:17 AM

30

1350.00

TQEX

GENMAB A/S

27-Mar-25

10:55:17 AM

23

1351.00

TQEX

GENMAB A/S

27-Mar-25

10:55:40 AM

50

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:55:40 AM

5

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:55:40 AM

73

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:55:40 AM

18

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:55:40 AM

25

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:55:40 AM

19

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:56:11 AM

22

1352.00

AQEU

GENMAB A/S

27-Mar-25

10:56:12 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

10

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

20

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

50

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

20

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

10

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:12 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:26 AM

78

1351.50

XCSE

GENMAB A/S

27-Mar-25

10:56:26 AM

8

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:26 AM

43

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:26 AM

26

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:26 AM

5

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:26 AM

8

1352.00

XCSE

73

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

10:56:26 AM

8

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:26 AM

15

1351.50

CEUX

GENMAB A/S

27-Mar-25

10:56:27 AM

10

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:27 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:56:27 AM

9

1352.00

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

3

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

30

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

6

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

2

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

11

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:00 AM

3

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

43

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

2

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:01 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:02 AM

43

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:02 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:02 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

10:58:04 AM

14

1352.50

CEUX

GENMAB A/S

27-Mar-25

10:58:04 AM

5

1352.50

CEUX

GENMAB A/S

27-Mar-25

10:58:04 AM

10

1352.50

CEUX

GENMAB A/S

27-Mar-25

10:59:52 AM

15

1352.50

CEUX

GENMAB A/S

27-Mar-25

10:59:53 AM

14

1352.50

CEUX

GENMAB A/S

27-Mar-25

10:59:55 AM

2

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:00:13 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:00:13 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:00:13 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:00:21 AM

10

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:01:06 AM

11

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:01:51 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:01:51 AM

11

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:01:57 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:14 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:14 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:14 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:14 AM

5

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:15 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:15 AM

10

1352.50

XCSE

74

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:02:15 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:36 AM

11

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:50 AM

45

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:50 AM

5

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:51 AM

45

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:51 AM

45

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:51 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:02:51 AM

5

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:51 AM

4

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:51 AM

4

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:51 AM

5

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:51 AM

4

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:02:56 AM

54

1352.00

XCSE

GENMAB A/S

27-Mar-25

11:02:56 AM

44

1352.00

XCSE

GENMAB A/S

27-Mar-25

11:02:56 AM

7

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:02:56 AM

73

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:02:56 AM

29

1352.00

TQEX

GENMAB A/S

27-Mar-25

11:03:27 AM

39

1352.00

XCSE

GENMAB A/S

27-Mar-25

11:04:38 AM

2

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:38 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:38 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:38 AM

29

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:38 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:38 AM

2

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:38 AM

36

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:39 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:39 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:39 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:39 AM

3

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:40 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:40 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:40 AM

8

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:43 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:44 AM

4

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:44 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:44 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:46 AM

9

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:46 AM

10

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:04:46 AM

3

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:05:42 AM

30

1352.00

TQEX

GENMAB A/S

27-Mar-25

11:05:45 AM

41

1352.00

XCSE

GENMAB A/S

27-Mar-25

11:05:45 AM

17

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:05:45 AM

23

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:05:45 AM

26

1352.00

AQEU

GENMAB A/S

27-Mar-25

11:07:10 AM

5

1352.00

CEUX

75

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:07:10 AM

72

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:07:10 AM

5

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:07:10 AM

4

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:07:10 AM

32

1352.00

TQEX

GENMAB A/S

27-Mar-25

11:07:11 AM

32

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:07:11 AM

29

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:07:11 AM

19

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:07:13 AM

36

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:07:13 AM

22

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:09:53 AM

24

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:09:53 AM

4

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:09:53 AM

11

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:09:53 AM

5

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:09:53 AM

11

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:09:53 AM

13

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:09:55 AM

30

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:09:55 AM

10

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:09:55 AM

9

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:09:55 AM

10

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:09:55 AM

8

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:09:55 AM

8

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

7

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

32

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

10

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

10

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

10

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

11

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

9

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

3

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

8

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

17

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

43

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

6

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:56 AM

30

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:09:58 AM

40

1353.00

XCSE

GENMAB A/S

27-Mar-25

11:09:58 AM

74

1352.50

XCSE

GENMAB A/S

27-Mar-25

11:09:58 AM

20

1352.50

CEUX

GENMAB A/S

27-Mar-25

11:09:58 AM

74

1353.00

CEUX

GENMAB A/S

27-Mar-25

11:09:58 AM

22

1353.00

TQEX

GENMAB A/S

27-Mar-25

11:10:14 AM

75

1351.50

XCSE

GENMAB A/S

27-Mar-25

11:10:14 AM

73

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:10:14 AM

78

1351.00

CEUX

GENMAB A/S

27-Mar-25

11:10:14 AM

24

1351.00

TQEX

GENMAB A/S

27-Mar-25

11:10:14 AM

26

1352.00

TQEX

GENMAB A/S

27-Mar-25

11:10:14 AM

24

1352.00

AQEU

76

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:10:42 AM

38

1350.50

XCSE

GENMAB A/S

27-Mar-25

11:10:42 AM

73

1350.50

XCSE

GENMAB A/S

27-Mar-25

11:12:17 AM

2

1352.00

AQEU

GENMAB A/S

27-Mar-25

11:13:07 AM

37

1351.50

XCSE

GENMAB A/S

27-Mar-25

11:13:16 AM

38

1351.50

XCSE

GENMAB A/S

27-Mar-25

11:13:16 AM

75

1351.50

CEUX

GENMAB A/S

27-Mar-25

11:13:16 AM

36

1352.00

CEUX

GENMAB A/S

27-Mar-25

11:13:16 AM

32

1352.00

AQEU

GENMAB A/S

27-Mar-25

11:13:34 AM

26

1351.00

TQEX

GENMAB A/S

27-Mar-25

11:13:35 AM

14

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:13:35 AM

33

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:13:35 AM

8

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:13:35 AM

43

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:13:35 AM

37

1350.50

CEUX

GENMAB A/S

27-Mar-25

11:13:35 AM

36

1350.50

CEUX

GENMAB A/S

27-Mar-25

11:15:11 AM

76

1350.50

XCSE

GENMAB A/S

27-Mar-25

11:15:11 AM

11

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:15:11 AM

57

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:15:11 AM

30

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:15:11 AM

1

1350.50

CEUX

GENMAB A/S

27-Mar-25

11:15:12 AM

10

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:15:12 AM

23

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:15:12 AM

8

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:15:12 AM

10

1351.00

XCSE

GENMAB A/S

27-Mar-25

11:15:19 AM

75

1350.50

XCSE

GENMAB A/S

27-Mar-25

11:15:26 AM

43

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:15:26 AM

77

1357.00

XCSE

GENMAB A/S

27-Mar-25

11:15:26 AM

23

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:15:26 AM

11

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:15:26 AM

76

1356.00

CEUX

GENMAB A/S

27-Mar-25

11:15:31 AM

43

1356.00

XCSE

GENMAB A/S

27-Mar-25

11:15:31 AM

22

1356.00

XCSE

GENMAB A/S

27-Mar-25

11:15:31 AM

33

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:15:31 AM

36

1356.50

CEUX

GENMAB A/S

27-Mar-25

11:15:41 AM

20

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:15:41 AM

74

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:15:41 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:15:41 AM

22

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:15:41 AM

76

1355.50

TQEX

GENMAB A/S

27-Mar-25

11:15:41 AM

74

1355.50

AQEU

GENMAB A/S

27-Mar-25

11:16:06 AM

74

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:16:06 AM

12

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:16:06 AM

71

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:16:06 AM

36

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:16:06 AM

73

1355.00

CEUX

77

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:16:06 AM

68

1354.50

TQEX

GENMAB A/S

27-Mar-25

11:16:06 AM

71

1354.50

AQEU

GENMAB A/S

27-Mar-25

11:16:07 AM

36

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:16:48 AM

19

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:16:48 AM

28

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:16:48 AM

26

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:16:48 AM

2

1354.50

TQEX

GENMAB A/S

27-Mar-25

11:16:51 AM

16

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:16:51 AM

8

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:17:57 AM

27

1354.00

AQEU

GENMAB A/S

27-Mar-25

11:18:00 AM

30

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:18:00 AM

17

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:18:00 AM

36

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:18:00 AM

22

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:18:00 AM

18

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:18:00 AM

63

1354.00

TQEX

GENMAB A/S

27-Mar-25

11:18:00 AM

28

1354.00

AQEU

GENMAB A/S

27-Mar-25

11:18:00 AM

14

1354.00

AQEU

GENMAB A/S

27-Mar-25

11:18:02 AM

31

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:18:04 AM

36

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:18:10 AM

24

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:18:13 AM

58

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:18:13 AM

30

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:18:13 AM

17

1353.50

CEUX

GENMAB A/S

27-Mar-25

11:18:13 AM

60

1353.50

CEUX

GENMAB A/S

27-Mar-25

11:18:52 AM

41

1353.00

AQEU

GENMAB A/S

27-Mar-25

11:20:00 AM

11

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:00 AM

87

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:01 AM

11

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:01 AM

2

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:01 AM

1

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:01 AM

3

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:01 AM

1

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:09 AM

46

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:09 AM

23

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:09 AM

7

1353.50

CEUX

GENMAB A/S

27-Mar-25

11:20:09 AM

14

1353.50

CEUX

GENMAB A/S

27-Mar-25

11:20:09 AM

15

1353.50

CEUX

GENMAB A/S

27-Mar-25

11:20:14 AM

17

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:38 AM

3

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:38 AM

19

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:20:38 AM

3

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:21:42 AM

2

1353.50

XCSE

GENMAB A/S

27-Mar-25

11:22:12 AM

12

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:22:12 AM

12

1354.00

CEUX

78

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:22:12 AM

24

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:22:12 AM

9

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:24:07 AM

17

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:24:10 AM

18

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:24:11 AM

30

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:24:11 AM

30

1354.00

XCSE

GENMAB A/S

27-Mar-25

11:24:11 AM

40

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:24:11 AM

2

1354.00

CEUX

GENMAB A/S

27-Mar-25

11:25:16 AM

32

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:16 AM

15

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:16 AM

15

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:16 AM

5

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:16 AM

31

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

25

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

8

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

1

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

8

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

8

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

48

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

14

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

43

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

3

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:17 AM

3

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:25:28 AM

20

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:33 AM

25

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:33 AM

38

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:33 AM

30

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:34 AM

30

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:34 AM

10

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:34 AM

8

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:34 AM

10

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:34 AM

30

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:35 AM

30

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:35 AM

8

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:25:36 AM

4

1354.50

XCSE

GENMAB A/S

27-Mar-25

11:28:06 AM

6

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:28:06 AM

25

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:28:06 AM

10

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:28:06 AM

9

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:28:06 AM

19

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:28:06 AM

8

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:28:06 AM

10

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:28:27 AM

4

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:28:27 AM

15

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:28:27 AM

22

1355.00

CEUX

79

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:28:27 AM

6

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:28:27 AM

8

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:28:28 AM

32

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:29:16 AM

74

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:29:16 AM

60

1355.00

TQEX

GENMAB A/S

27-Mar-25

11:29:16 AM

14

1355.00

AQEU

GENMAB A/S

27-Mar-25

11:29:17 AM

23

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:29:17 AM

44

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:29:17 AM

32

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:29:17 AM

35

1355.00

AQEU

GENMAB A/S

27-Mar-25

11:29:36 AM

22

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:29:36 AM

30

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:29:36 AM

21

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:29:36 AM

77

1354.50

CEUX

GENMAB A/S

27-Mar-25

11:33:32 AM

15

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:33:32 AM

4

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:33:32 AM

23

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:33:32 AM

9

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:33:32 AM

10

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:33:36 AM

14

1355.00

TQEX

GENMAB A/S

27-Mar-25

11:33:54 AM

23

1355.00

TQEX

GENMAB A/S

27-Mar-25

11:33:58 AM

17

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:33:58 AM

3

1355.00

TQEX

GENMAB A/S

27-Mar-25

11:35:53 AM

30

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

74

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

6

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

68

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

4

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

26

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

24

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:35:53 AM

36

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:35:54 AM

23

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:36:13 AM

7

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:36:13 AM

47

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:36:13 AM

21

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:36:13 AM

75

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:36:13 AM

15

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:36:13 AM

24

1355.00

TQEX

GENMAB A/S

27-Mar-25

11:36:36 AM

3

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:36:44 AM

2

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:17 AM

30

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:17 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:17 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:17 AM

34

1355.50

XCSE

80

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:37:17 AM

30

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:17 AM

73

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:17 AM

8

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:17 AM

38

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:18 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:30 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:30 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:30 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:30 AM

3

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:30 AM

8

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:32 AM

8

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:32 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:32 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:33 AM

8

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:38 AM

19

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:39 AM

2

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:41 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:41 AM

8

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:41 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:43 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:37:45 AM

46

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:39:58 AM

36

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:39:58 AM

25

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:40:00 AM

30

1355.00

AQEU

GENMAB A/S

27-Mar-25

11:40:28 AM

13

1355.00

AQEU

GENMAB A/S

27-Mar-25

11:43:11 AM

25

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:43:11 AM

44

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:43:11 AM

36

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:43:11 AM

11

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:43:11 AM

14

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:43:11 AM

30

1355.00

TQEX

GENMAB A/S

27-Mar-25

11:43:11 AM

4

1355.00

AQEU

GENMAB A/S

27-Mar-25

11:43:51 AM

30

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:43:51 AM

43

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:43:51 AM

39

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:43:51 AM

17

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:43:51 AM

22

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:43:51 AM

14

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:43:51 AM

24

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:43:52 AM

3

1355.00

CEUX

GENMAB A/S

27-Mar-25

11:44:02 AM

50

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:44:03 AM

27

1355.00

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

8

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

27

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

13

1355.50

XCSE

81

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:44:53 AM

27

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

9

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

27

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

19

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

4

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:53 AM

28

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:44:53 AM

21

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:44:53 AM

4

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:44:57 AM

2

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:57 AM

93

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:44:58 AM

2

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:45:06 AM

45

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:45:06 AM

3

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:45:06 AM

28

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:45:07 AM

20

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:45:07 AM

62

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:45:29 AM

1

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:45:29 AM

12

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:45:29 AM

5

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:45:59 AM

15

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:45:59 AM

36

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:45:59 AM

3

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:46:31 AM

17

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:46:31 AM

10

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:46:31 AM

23

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:46:37 AM

10

1356.00

XCSE

GENMAB A/S

27-Mar-25

11:46:37 AM

9

1356.00

XCSE

GENMAB A/S

27-Mar-25

11:46:38 AM

8

1356.00

XCSE

GENMAB A/S

27-Mar-25

11:47:07 AM

78

1356.00

XCSE

GENMAB A/S

27-Mar-25

11:48:09 AM

4

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:48:09 AM

43

1355.50

XCSE

GENMAB A/S

27-Mar-25

11:48:09 AM

36

1356.00

CEUX

GENMAB A/S

27-Mar-25

11:48:09 AM

5

1356.00

CEUX

GENMAB A/S

27-Mar-25

11:48:09 AM

77

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:48:09 AM

20

1355.50

CEUX

GENMAB A/S

27-Mar-25

11:48:09 AM

25

1355.00

TQEX

GENMAB A/S

27-Mar-25

11:49:37 AM

8

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:37 AM

43

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:37 AM

9

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:37 AM

9

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:37 AM

8

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:37 AM

9

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:37 AM

9

1356.50

XCSE

82

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:49:37 AM

43

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:37 AM

28

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

10

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

8

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

8

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

10

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

8

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

12

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

10

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:38 AM

41

1356.00

AQEU

GENMAB A/S

27-Mar-25

11:49:40 AM

8

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:40 AM

9

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:40 AM

8

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:45 AM

9

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:45 AM

13

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:49:48 AM

10

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:50:43 AM

10

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:50:43 AM

1

1356.50

XCSE

GENMAB A/S

27-Mar-25

11:51:24 AM

96

1357.00

XCSE

GENMAB A/S

27-Mar-25

11:51:24 AM

2

1357.00

XCSE

GENMAB A/S

27-Mar-25

11:51:27 AM

3

1357.50

XCSE

GENMAB A/S

27-Mar-25

11:51:27 AM

18

1357.50

XCSE

GENMAB A/S

27-Mar-25

11:52:04 AM

7

1357.50

CEUX

GENMAB A/S

27-Mar-25

11:52:30 AM

2

1358.00

XCSE

GENMAB A/S

27-Mar-25

11:52:30 AM

50

1358.00

XCSE

GENMAB A/S

27-Mar-25

11:52:36 AM

2

1358.00

XCSE

GENMAB A/S

27-Mar-25

11:52:51 AM

3

1358.00

XCSE

GENMAB A/S

27-Mar-25

11:53:02 AM

3

1358.00

XCSE

GENMAB A/S

27-Mar-25

11:53:03 AM

13

1358.00

CEUX

GENMAB A/S

27-Mar-25

11:53:03 AM

15

1358.00

CEUX

GENMAB A/S

27-Mar-25

11:53:31 AM

3

1358.50

CEUX

GENMAB A/S

27-Mar-25

11:53:51 AM

12

1358.50

CEUX

GENMAB A/S

27-Mar-25

11:55:09 AM

73

1358.50

XCSE

GENMAB A/S

27-Mar-25

11:55:09 AM

32

1358.50

CEUX

GENMAB A/S

27-Mar-25

11:55:09 AM

43

1358.50

CEUX

GENMAB A/S

27-Mar-25

11:55:09 AM

34

1358.50

CEUX

GENMAB A/S

27-Mar-25

11:55:42 AM

9

1360.50

XCSE

GENMAB A/S

27-Mar-25

11:55:42 AM

8

1360.50

XCSE

GENMAB A/S

27-Mar-25

11:55:42 AM

10

1360.50

XCSE

GENMAB A/S

27-Mar-25

11:55:42 AM

72

1360.50

CEUX

GENMAB A/S

27-Mar-25

11:55:43 AM

75

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:43 AM

78

1360.00

TQEX

GENMAB A/S

27-Mar-25

11:55:43 AM

44

1360.00

AQEU

GENMAB A/S

27-Mar-25

11:55:45 AM

70

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:45 AM

15

1360.00

XCSE

83

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:55:45 AM

13

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

7

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

11

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

10

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

25

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

36

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

10

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:46 AM

11

1359.50

CEUX

GENMAB A/S

27-Mar-25

11:55:47 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:47 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:47 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:47 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:47 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:47 AM

10

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:48 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:51 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:58 AM

4

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:58 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:58 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:58 AM

43

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:58 AM

24

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:58 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:58 AM

66

1359.50

CEUX

GENMAB A/S

27-Mar-25

11:55:59 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:59 AM

10

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:59 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:59 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:59 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:55:59 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:56:00 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:56:00 AM

9

1360.00

XCSE

84

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:56:00 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:56:01 AM

10

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:56:01 AM

9

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:56:01 AM

8

1360.00

XCSE

GENMAB A/S

27-Mar-25

11:56:56 AM

29

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:56:56 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:56:56 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:56:56 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:56:56 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:57:11 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:57:44 AM

2

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:57:51 AM

3

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

7

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

2

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

45

1360.50

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:06 AM

34

1360.50

CEUX

GENMAB A/S

27-Mar-25

11:58:06 AM

43

1360.50

CEUX

GENMAB A/S

27-Mar-25

11:58:07 AM

30

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

39

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

30

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

31

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

29

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:07 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:08 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:08 AM

42

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:08 AM

30

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:08 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:08 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:08 AM

17

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:08 AM

30

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

8

1361.00

XCSE

85

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:58:09 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

14

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

27

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

16

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

26

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:09 AM

9

1360.50

CEUX

GENMAB A/S

27-Mar-25

11:58:09 AM

68

1360.50

CEUX

GENMAB A/S

27-Mar-25

11:58:09 AM

11

1360.00

AQEU

GENMAB A/S

27-Mar-25

11:58:10 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:10 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:10 AM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:10 AM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:10 AM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:10 AM

26

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:10 AM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:13 AM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:13 AM

23

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:18 AM

23

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:19 AM

2

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

2

1361.00

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

25

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:22 AM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:23 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:23 AM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:23 AM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:23 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:23 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:23 AM

14

1361.50

XCSE

86

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

11:58:23 AM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:23 AM

1

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:24 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:24 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:58:27 AM

71

1361.00

TQEX

GENMAB A/S

27-Mar-25

11:58:27 AM

54

1361.00

AQEU

GENMAB A/S

27-Mar-25

11:59:47 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

33

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

31

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

16

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

13

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

7

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:47 AM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:48 AM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

11:59:48 AM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:00:13 PM

22

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:00:13 PM

43

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:00:24 PM

76

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:00:24 PM

24

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:00:24 PM

78

1361.50

CEUX

GENMAB A/S

27-Mar-25

12:00:43 PM

2

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:00:51 PM

3

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:17 PM

69

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:17 PM

31

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:18 PM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:18 PM

39

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:18 PM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:18 PM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:18 PM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:18 PM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:19 PM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:19 PM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:19 PM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:19 PM

10

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:20 PM

39

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:20 PM

39

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:20 PM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:20 PM

8

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:20 PM

9

1361.50

XCSE

GENMAB A/S

27-Mar-25

12:01:20 PM

9

1361.50

XCSE

87

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

12:01:20 PM

42

1361.00

AQEU

GENMAB A/S

27-Mar-25

12:01:28 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:01:28 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:01:36 PM

28

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:01:36 PM

5

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:02:06 PM

37

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:02:06 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:02:18 PM

54

1360.50

CEUX

GENMAB A/S

27-Mar-25

12:02:58 PM

78

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:02:58 PM

72

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:02:58 PM

60

1363.00

TQEX

GENMAB A/S

27-Mar-25

12:02:58 PM

39

1363.00

AQEU

GENMAB A/S

27-Mar-25

12:03:21 PM

75

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:03:21 PM

32

1363.50

CEUX

GENMAB A/S

27-Mar-25

12:03:23 PM

48

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:03:23 PM

33

1363.00

TQEX

GENMAB A/S

27-Mar-25

12:03:23 PM

18

1363.00

AQEU

GENMAB A/S

27-Mar-25

12:04:34 PM

10

1363.00

AQEU

GENMAB A/S

27-Mar-25

12:09:49 PM

62

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:09:50 PM

30

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:10:05 PM

14

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:10:20 PM

33

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:20 PM

34

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:20 PM

15

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:20 PM

13

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:20 PM

43

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:20 PM

16

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:20 PM

17

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:21 PM

9

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:21 PM

33

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:21 PM

98

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:21 PM

8

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:10:21 PM

8

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:11:06 PM

4

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:11:06 PM

12

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:11:06 PM

4

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:11:06 PM

8

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:11:06 PM

9

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:11:33 PM

74

1362.00

XCSE

GENMAB A/S

27-Mar-25

12:11:33 PM

72

1362.00

CEUX

GENMAB A/S

27-Mar-25

12:11:33 PM

58

1362.00

TQEX

GENMAB A/S

27-Mar-25

12:11:33 PM

12

1362.00

AQEU

GENMAB A/S

27-Mar-25

12:11:33 PM

3

1362.00

AQEU

GENMAB A/S

27-Mar-25

12:11:33 PM

21

1362.00

AQEU

GENMAB A/S

27-Mar-25

12:11:42 PM

47

1361.00

XCSE

88

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

12:11:42 PM

25

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:11:42 PM

22

1361.00

CEUX

GENMAB A/S

27-Mar-25

12:11:42 PM

30

1361.00

AQEU

GENMAB A/S

27-Mar-25

12:12:01 PM

33

1360.50

TQEX

GENMAB A/S

27-Mar-25

12:12:07 PM

27

1360.00

CEUX

GENMAB A/S

27-Mar-25

12:12:07 PM

15

1360.00

AQEU

GENMAB A/S

27-Mar-25

12:12:09 PM

9

1360.00

AQEU

GENMAB A/S

27-Mar-25

12:13:56 PM

4

1360.00

XCSE

GENMAB A/S

27-Mar-25

12:13:56 PM

23

1360.00

XCSE

GENMAB A/S

27-Mar-25

12:14:12 PM

74

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:14:12 PM

70

1359.50

CEUX

GENMAB A/S

27-Mar-25

12:14:12 PM

6

1359.50

CEUX

GENMAB A/S

27-Mar-25

12:14:12 PM

28

1359.50

TQEX

GENMAB A/S

27-Mar-25

12:15:40 PM

22

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:15:46 PM

9

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:15:46 PM

10

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:15:46 PM

9

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:16:45 PM

43

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:16:45 PM

6

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:17:40 PM

8

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:17:40 PM

2

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:17:46 PM

26

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:17:47 PM

3

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:18:08 PM

75

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:18:08 PM

8

1359.50

TQEX

GENMAB A/S

27-Mar-25

12:18:15 PM

76

1358.50

XCSE

GENMAB A/S

27-Mar-25

12:18:15 PM

72

1358.50

CEUX

GENMAB A/S

27-Mar-25

12:18:15 PM

24

1358.50

AQEU

GENMAB A/S

27-Mar-25

12:18:15 PM

3

1358.50

AQEU

GENMAB A/S

27-Mar-25

12:19:27 PM

50

1357.50

XCSE

GENMAB A/S

27-Mar-25

12:23:19 PM

9

1358.50

XCSE

GENMAB A/S

27-Mar-25

12:23:19 PM

43

1358.50

XCSE

GENMAB A/S

27-Mar-25

12:23:19 PM

15

1358.50

XCSE

GENMAB A/S

27-Mar-25

12:23:19 PM

2

1358.50

XCSE

GENMAB A/S

27-Mar-25

12:23:19 PM

10

1358.50

XCSE

GENMAB A/S

27-Mar-25

12:23:19 PM

13

1358.50

XCSE

GENMAB A/S

27-Mar-25

12:23:19 PM

7

1358.50

AQEU

GENMAB A/S

27-Mar-25

12:23:24 PM

75

1359.00

XCSE

GENMAB A/S

27-Mar-25

12:27:25 PM

43

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:27:25 PM

9

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:27:26 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:27:26 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:27:26 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:27:26 PM

1

1359.50

XCSE

GENMAB A/S

27-Mar-25

12:27:27 PM

72

1360.50

XCSE

89

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

12:27:27 PM

5

1361.00

CEUX

GENMAB A/S

27-Mar-25

12:27:27 PM

73

1360.50

CEUX

GENMAB A/S

27-Mar-25

12:27:27 PM

5

1361.00

CEUX

GENMAB A/S

27-Mar-25

12:27:27 PM

36

1361.00

CEUX

GENMAB A/S

27-Mar-25

12:27:27 PM

4

1361.00

CEUX

GENMAB A/S

27-Mar-25

12:27:27 PM

31

1360.50

TQEX

GENMAB A/S

27-Mar-25

12:30:24 PM

28

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:24 PM

12

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:24 PM

6

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:25 PM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:25 PM

14

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:25 PM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:25 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:26 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:26 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:26 PM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:27 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:29 PM

2

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:29 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:29 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:31 PM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:32 PM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:32 PM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:32 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:32 PM

2

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:33 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:33 PM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:41 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:41 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:43 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:30:43 PM

9

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:31:17 PM

14

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:32:35 PM

43

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:32:35 PM

10

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:32:37 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:32:37 PM

13

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:32:41 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:32:42 PM

8

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:34:36 PM

20

1361.00

XCSE

GENMAB A/S

27-Mar-25

12:35:49 PM

76

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:35:49 PM

36

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:49 PM

72

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:49 PM

26

1363.00

TQEX

GENMAB A/S

27-Mar-25

12:35:49 PM

8

1363.00

TQEX

GENMAB A/S

27-Mar-25

12:35:49 PM

24

1363.00

AQEU

90

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

12:35:50 PM

41

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:35:50 PM

19

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:35:50 PM

38

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:35:50 PM

78

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:51 PM

23

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:35:51 PM

19

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:35:51 PM

43

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:35:51 PM

5

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:51 PM

12

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:51 PM

4

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:51 PM

5

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:51 PM

5

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:51 PM

36

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:35:51 PM

25

1362.50

TQEX

GENMAB A/S

27-Mar-25

12:35:53 PM

21

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:36:05 PM

13

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:36:16 PM

44

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:36:16 PM

8

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:36:19 PM

15

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:39:27 PM

76

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:39:27 PM

73

1363.00

CEUX

GENMAB A/S

27-Mar-25

12:41:48 PM

73

1362.00

XCSE

GENMAB A/S

27-Mar-25

12:41:48 PM

43

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:41:48 PM

77

1362.00

CEUX

GENMAB A/S

27-Mar-25

12:41:48 PM

40

1362.50

CEUX

GENMAB A/S

27-Mar-25

12:41:48 PM

23

1362.50

TQEX

GENMAB A/S

27-Mar-25

12:41:48 PM

22

1362.50

AQEU

GENMAB A/S

27-Mar-25

12:43:08 PM

28

1362.50

CEUX

GENMAB A/S

27-Mar-25

12:43:08 PM

10

1362.50

CEUX

GENMAB A/S

27-Mar-25

12:43:08 PM

13

1362.50

CEUX

GENMAB A/S

27-Mar-25

12:43:16 PM

10

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:43:16 PM

43

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:43:16 PM

77

1362.00

CEUX

GENMAB A/S

27-Mar-25

12:43:23 PM

72

1362.50

CEUX

GENMAB A/S

27-Mar-25

12:43:35 PM

78

1362.00

XCSE

GENMAB A/S

27-Mar-25

12:44:10 PM

24

1361.50

TQEX

GENMAB A/S

27-Mar-25

12:44:10 PM

22

1361.50

AQEU

GENMAB A/S

27-Mar-25

12:44:53 PM

8

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:44:53 PM

9

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:44:53 PM

20

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:44:53 PM

9

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:44:54 PM

14

1363.00

XCSE

GENMAB A/S

27-Mar-25

12:45:02 PM

24

1365.50

XCSE

GENMAB A/S

27-Mar-25

12:45:02 PM

8

1365.50

XCSE

GENMAB A/S

27-Mar-25

12:45:02 PM

43

1365.50

XCSE

91

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

12:45:02 PM

17

1365.50

XCSE

GENMAB A/S

27-Mar-25

12:45:02 PM

46

1365.00

CEUX

GENMAB A/S

27-Mar-25

12:45:02 PM

28

1365.00

CEUX

GENMAB A/S

27-Mar-25

12:45:02 PM

26

1365.50

AQEU

GENMAB A/S

27-Mar-25

12:45:03 PM

41

1365.50

XCSE

GENMAB A/S

27-Mar-25

12:45:15 PM

63

1365.50

XCSE

GENMAB A/S

27-Mar-25

12:45:15 PM

20

1365.50

XCSE

GENMAB A/S

27-Mar-25

12:45:15 PM

76

1365.00

XCSE

GENMAB A/S

27-Mar-25

12:45:15 PM

15

1365.50

XCSE

GENMAB A/S

27-Mar-25

12:45:15 PM

68

1365.50

CEUX

GENMAB A/S

27-Mar-25

12:45:15 PM

22

1365.50

TQEX

GENMAB A/S

27-Mar-25

12:45:15 PM

34

1365.50

AQEU

GENMAB A/S

27-Mar-25

12:47:02 PM

22

1364.50

TQEX

GENMAB A/S

27-Mar-25

12:47:06 PM

3

1364.50

XCSE

GENMAB A/S

27-Mar-25

12:48:18 PM

73

1366.00

XCSE

GENMAB A/S

27-Mar-25

12:48:18 PM

76

1366.00

CEUX

GENMAB A/S

27-Mar-25

12:48:18 PM

23

1366.00

AQEU

GENMAB A/S

27-Mar-25

12:48:22 PM

33

1366.00

XCSE

GENMAB A/S

27-Mar-25

12:50:00 PM

1

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:01 PM

21

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:13 PM

2

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:14 PM

2

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:17 PM

2

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:21 PM

9

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:21 PM

9

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:21 PM

4

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:50:27 PM

2

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:53:43 PM

15

1368.50

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

15

1366.00

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

27

1366.00

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

77

1366.00

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

41

1366.00

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

75

1368.50

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

10

1366.00

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

73

1367.00

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

98

1368.50

XCSE

GENMAB A/S

27-Mar-25

12:55:17 PM

46

1366.00

CEUX

GENMAB A/S

27-Mar-25

12:55:17 PM

76

1368.00

CEUX

GENMAB A/S

27-Mar-25

12:55:17 PM

78

1367.00

CEUX

GENMAB A/S

27-Mar-25

12:55:17 PM

1

1368.00

CEUX

GENMAB A/S

27-Mar-25

12:55:17 PM

29

1367.50

TQEX

GENMAB A/S

27-Mar-25

12:55:17 PM

22

1366.50

TQEX

GENMAB A/S

27-Mar-25

12:55:17 PM

23

1368.00

AQEU

GENMAB A/S

27-Mar-25

12:55:17 PM

22

1367.00

AQEU

GENMAB A/S

27-Mar-25

12:55:17 PM

23

1366.00

AQEU

92

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

12:55:18 PM

11

1365.50

AQEU

GENMAB A/S

27-Mar-25

12:55:21 PM

28

1365.50

AQEU

GENMAB A/S

27-Mar-25

12:55:33 PM

76

1364.50

XCSE

GENMAB A/S

27-Mar-25

12:55:33 PM

9

1364.50

CEUX

GENMAB A/S

27-Mar-25

12:55:33 PM

67

1364.50

CEUX

GENMAB A/S

27-Mar-25

12:55:43 PM

78

1363.50

CEUX

GENMAB A/S

27-Mar-25

12:55:44 PM

19

1363.50

XCSE

GENMAB A/S

27-Mar-25

12:55:44 PM

55

1363.50

XCSE

GENMAB A/S

27-Mar-25

12:55:44 PM

15

1364.00

AQEU

GENMAB A/S

27-Mar-25

12:55:44 PM

9

1364.00

AQEU

GENMAB A/S

27-Mar-25

12:55:51 PM

45

1362.50

CEUX

GENMAB A/S

27-Mar-25

12:55:53 PM

76

1362.50

XCSE

GENMAB A/S

27-Mar-25

12:57:14 PM

27

1363.00

TQEX

GENMAB A/S

27-Mar-25

12:59:36 PM

48

1363.50

XCSE

GENMAB A/S

27-Mar-25

12:59:36 PM

29

1363.50

XCSE

GENMAB A/S

27-Mar-25

1:00:00 PM

48

1363.50

CEUX

GENMAB A/S

27-Mar-25

1:00:26 PM

48

1364.00

XCSE

GENMAB A/S

27-Mar-25

1:00:26 PM

8

1364.00

XCSE

GENMAB A/S

27-Mar-25

1:00:26 PM

13

1364.00

XCSE

GENMAB A/S

27-Mar-25

1:00:51 PM

39

1363.50

CEUX

GENMAB A/S

27-Mar-25

1:04:20 PM

56

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:04:20 PM

17

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:04:20 PM

69

1367.50

CEUX

GENMAB A/S

27-Mar-25

1:04:20 PM

40

1367.50

AQEU

GENMAB A/S

27-Mar-25

1:04:21 PM

9

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:04:21 PM

12

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:04:21 PM

8

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:04:21 PM

24

1367.00

TQEX

GENMAB A/S

27-Mar-25

1:04:24 PM

62

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:04:24 PM

22

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:04:29 PM

36

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:04:56 PM

27

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:04:56 PM

5

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:04:56 PM

21

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:04:56 PM

25

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:04:56 PM

8

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:04:56 PM

9

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:06:18 PM

24

1367.00

TQEX

GENMAB A/S

27-Mar-25

1:06:29 PM

34

1367.00

AQEU

GENMAB A/S

27-Mar-25

1:08:07 PM

22

1367.00

TQEX

GENMAB A/S

27-Mar-25

1:08:42 PM

40

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:08:42 PM

18

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:08:42 PM

24

1367.00

AQEU

GENMAB A/S

27-Mar-25

1:08:43 PM

42

1367.00

XCSE

GENMAB A/S

27-Mar-25

1:08:56 PM

26

1367.00

XCSE

93

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

1:09:09 PM

10

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:09:09 PM

19

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:09:09 PM

7

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:09:09 PM

9

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:09:09 PM

37

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:09:09 PM

8

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:09:09 PM

8

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:09:17 PM

26

1366.50

XCSE

GENMAB A/S

27-Mar-25

1:09:17 PM

50

1366.50

XCSE

GENMAB A/S

27-Mar-25

1:09:18 PM

58

1366.50

CEUX

GENMAB A/S

27-Mar-25

1:09:43 PM

2

1365.50

XCSE

GENMAB A/S

27-Mar-25

1:09:43 PM

73

1365.50

XCSE

GENMAB A/S

27-Mar-25

1:09:48 PM

36

1365.00

CEUX

GENMAB A/S

27-Mar-25

1:11:31 PM

75

1367.00

CEUX

GENMAB A/S

27-Mar-25

1:12:13 PM

40

1367.50

TQEX

GENMAB A/S

27-Mar-25

1:12:18 PM

17

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:12:18 PM

8

1367.50

XCSE

GENMAB A/S

27-Mar-25

1:12:19 PM

25

1367.00

CEUX

GENMAB A/S

27-Mar-25

1:12:19 PM

3

1367.00

CEUX

GENMAB A/S

27-Mar-25

1:12:25 PM

1

1367.00

AQEU

GENMAB A/S

27-Mar-25

1:13:10 PM

34

1368.00

CEUX

GENMAB A/S

27-Mar-25

1:13:26 PM

16

1368.00

XCSE

GENMAB A/S

27-Mar-25

1:13:29 PM

6

1368.00

XCSE

GENMAB A/S

27-Mar-25

1:13:30 PM

26

1368.00

CEUX

GENMAB A/S

27-Mar-25

1:14:23 PM

27

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:14:23 PM

2

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:14:23 PM

35

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:14:24 PM

8

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:14:24 PM

8

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:14:24 PM

11

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:14:25 PM

74

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:15:05 PM

74

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:15:08 PM

74

1372.50

CEUX

GENMAB A/S

27-Mar-25

1:15:32 PM

77

1372.00

XCSE

GENMAB A/S

27-Mar-25

1:15:54 PM

72

1371.00

XCSE

GENMAB A/S

27-Mar-25

1:15:54 PM

56

1371.50

CEUX

GENMAB A/S

27-Mar-25

1:19:02 PM

14

1371.50

CEUX

GENMAB A/S

27-Mar-25

1:19:18 PM

14

1371.50

CEUX

GENMAB A/S

27-Mar-25

1:19:37 PM

6

1371.50

CEUX

GENMAB A/S

27-Mar-25

1:19:39 PM

10

1371.50

XCSE

GENMAB A/S

27-Mar-25

1:19:39 PM

33

1371.50

XCSE

GENMAB A/S

27-Mar-25

1:19:39 PM

10

1371.50

XCSE

GENMAB A/S

27-Mar-25

1:19:39 PM

10

1371.50

XCSE

GENMAB A/S

27-Mar-25

1:20:39 PM

14

1371.50

XCSE

GENMAB A/S

27-Mar-25

1:20:39 PM

11

1371.50

XCSE

94

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

1:20:39 PM

50

1371.50

XCSE

GENMAB A/S

27-Mar-25

1:20:39 PM

23

1371.50

TQEX

GENMAB A/S

27-Mar-25

1:21:15 PM

18

1372.50

CEUX

GENMAB A/S

27-Mar-25

1:21:15 PM

57

1372.50

CEUX

GENMAB A/S

27-Mar-25

1:23:06 PM

19

1373.50

XCSE

GENMAB A/S

27-Mar-25

1:23:06 PM

14

1373.50

XCSE

GENMAB A/S

27-Mar-25

1:23:10 PM

44

1373.50

XCSE

GENMAB A/S

27-Mar-25

1:23:10 PM

20

1373.50

XCSE

GENMAB A/S

27-Mar-25

1:23:10 PM

34

1373.50

XCSE

GENMAB A/S

27-Mar-25

1:23:10 PM

76

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:23:10 PM

64

1373.00

CEUX

GENMAB A/S

27-Mar-25

1:23:10 PM

42

1373.00

TQEX

GENMAB A/S

27-Mar-25

1:24:27 PM

4

1372.00

XCSE

GENMAB A/S

27-Mar-25

1:24:35 PM

4

1372.00

XCSE

GENMAB A/S

27-Mar-25

1:25:35 PM

38

1372.00

XCSE

GENMAB A/S

27-Mar-25

1:25:35 PM

68

1372.00

XCSE

GENMAB A/S

27-Mar-25

1:25:35 PM

60

1372.00

XCSE

GENMAB A/S

27-Mar-25

1:26:00 PM

14

1371.50

CEUX

GENMAB A/S

27-Mar-25

1:26:56 PM

43

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:26:56 PM

3

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:26:56 PM

15

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:26:56 PM

9

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:26:56 PM

2

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:26:56 PM

2

1372.50

XCSE

GENMAB A/S

27-Mar-25

1:26:56 PM

24

1373.00

XCSE

GENMAB A/S

27-Mar-25

1:28:09 PM

42

1375.50

CEUX

GENMAB A/S

27-Mar-25

1:28:09 PM

34

1375.50

CEUX

GENMAB A/S

27-Mar-25

1:28:09 PM

42

1375.50

TQEX

GENMAB A/S

27-Mar-25

1:29:38 PM

36

1375.00

XCSE

GENMAB A/S

27-Mar-25

1:29:38 PM

30

1375.00

XCSE

GENMAB A/S

27-Mar-25

1:29:38 PM

72

1375.00

XCSE

GENMAB A/S

27-Mar-25

1:29:38 PM

22

1375.00

AQEU

GENMAB A/S

27-Mar-25

1:30:31 PM

19

1375.50

XCSE

GENMAB A/S

27-Mar-25

1:30:31 PM

11

1375.50

XCSE

GENMAB A/S

27-Mar-25

1:30:31 PM

22

1375.50

XCSE

GENMAB A/S

27-Mar-25

1:30:31 PM

46

1375.50

XCSE

GENMAB A/S

27-Mar-25

1:33:07 PM

73

1376.00

XCSE

GENMAB A/S

27-Mar-25

1:33:07 PM

26

1376.00

AQEU

GENMAB A/S

27-Mar-25

1:34:14 PM

47

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:34:14 PM

51

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:34:15 PM

41

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:37:15 PM

35

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:37:15 PM

42

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:37:15 PM

21

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:37:15 PM

72

1376.50

CEUX

95

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

1:37:15 PM

32

1376.00

CEUX

GENMAB A/S

27-Mar-25

1:37:15 PM

31

1376.50

AQEU

GENMAB A/S

27-Mar-25

1:37:17 PM

9

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:37:17 PM

10

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:37:17 PM

8

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:37:17 PM

32

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:37:17 PM

18

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:37:17 PM

17

1377.00

XCSE

GENMAB A/S

27-Mar-25

1:37:37 PM

23

1378.00

CEUX

GENMAB A/S

27-Mar-25

1:41:27 PM

26

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:41:27 PM

8

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:41:27 PM

10

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:41:27 PM

11

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:41:27 PM

18

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:41:27 PM

14

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:41:27 PM

7

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:41:32 PM

31

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:41:32 PM

40

1378.00

TQEX

GENMAB A/S

27-Mar-25

1:41:42 PM

15

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

15

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

11

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

8

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

26

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

9

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

46

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

10

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

20

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

74

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:41:42 PM

4

1378.00

CEUX

GENMAB A/S

27-Mar-25

1:41:42 PM

72

1377.50

CEUX

GENMAB A/S

27-Mar-25

1:41:42 PM

3

1377.50

CEUX

GENMAB A/S

27-Mar-25

1:41:42 PM

23

1377.00

TQEX

GENMAB A/S

27-Mar-25

1:41:42 PM

22

1377.50

AQEU

GENMAB A/S

27-Mar-25

1:41:52 PM

8

1377.50

XCSE

GENMAB A/S

27-Mar-25

1:41:56 PM

5

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:41:57 PM

12

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:42:16 PM

45

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:42:16 PM

17

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:42:19 PM

20

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:42:19 PM

14

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:42:30 PM

3

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:44:24 PM

10

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:44:24 PM

8

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:44:24 PM

69

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:44:24 PM

9

1378.50

CEUX

96

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

1:44:24 PM

73

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:44:24 PM

22

1378.50

AQEU

GENMAB A/S

27-Mar-25

1:44:25 PM

29

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:44:25 PM

21

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:44:25 PM

9

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:44:25 PM

30

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:44:25 PM

9

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:45:06 PM

14

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:45:06 PM

43

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:45:06 PM

12

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:45:06 PM

10

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:49:06 PM

26

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:49:07 PM

43

1379.00

CEUX

GENMAB A/S

27-Mar-25

1:50:00 PM

12

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

33

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

9

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

10

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

9

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

9

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

1

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

6

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

8

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:00 PM

9

1379.50

XCSE

GENMAB A/S

27-Mar-25

1:50:02 PM

49

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:50:02 PM

76

1379.00

XCSE

GENMAB A/S

27-Mar-25

1:50:02 PM

1

1379.00

CEUX

GENMAB A/S

27-Mar-25

1:50:02 PM

30

1379.00

CEUX

GENMAB A/S

27-Mar-25

1:50:02 PM

40

1379.00

CEUX

GENMAB A/S

27-Mar-25

1:50:02 PM

34

1379.00

CEUX

GENMAB A/S

27-Mar-25

1:50:44 PM

12

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:50:44 PM

19

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:50:46 PM

18

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:50:46 PM

30

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:50:46 PM

15

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:50:46 PM

23

1378.50

TQEX

GENMAB A/S

27-Mar-25

1:50:46 PM

24

1378.50

AQEU

GENMAB A/S

27-Mar-25

1:50:47 PM

44

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:50:47 PM

8

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:50:49 PM

28

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:50:49 PM

44

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:51:01 PM

78

1379.50

CEUX

GENMAB A/S

27-Mar-25

1:51:01 PM

32

1379.50

TQEX

GENMAB A/S

27-Mar-25

1:51:01 PM

7

1379.50

AQEU

GENMAB A/S

27-Mar-25

1:51:01 PM

15

1379.50

AQEU

GENMAB A/S

27-Mar-25

1:51:34 PM

17

1378.50

XCSE

97

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

1:51:34 PM

44

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:51:34 PM

12

1378.50

XCSE

GENMAB A/S

27-Mar-25

1:51:34 PM

69

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:51:34 PM

8

1378.50

CEUX

GENMAB A/S

27-Mar-25

1:51:34 PM

22

1378.50

AQEU

GENMAB A/S

27-Mar-25

1:52:46 PM

22

1377.50

CEUX

GENMAB A/S

27-Mar-25

1:52:46 PM

54

1377.50

CEUX

GENMAB A/S

27-Mar-25

1:53:16 PM

8

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:53:16 PM

9

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:53:16 PM

14

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:53:16 PM

10

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:53:16 PM

13

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:06 PM

9

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:06 PM

32

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:06 PM

6

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:06 PM

9

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:06 PM

8

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:56 PM

9

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:56 PM

6

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:56 PM

10

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:54:56 PM

10

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:55:59 PM

78

1378.00

XCSE

GENMAB A/S

27-Mar-25

1:55:59 PM

73

1377.50

CEUX

GENMAB A/S

27-Mar-25

1:55:59 PM

25

1378.00

TQEX

GENMAB A/S

27-Mar-25

1:55:59 PM

22

1378.00

AQEU

GENMAB A/S

27-Mar-25

1:56:12 PM

72

1377.00

XCSE

GENMAB A/S

27-Mar-25

1:58:48 PM

43

1377.00

XCSE

GENMAB A/S

27-Mar-25

1:58:48 PM

55

1377.00

XCSE

GENMAB A/S

27-Mar-25

1:58:49 PM

48

1377.00

XCSE

GENMAB A/S

27-Mar-25

1:59:14 PM

28

1376.50

AQEU

GENMAB A/S

27-Mar-25

1:59:26 PM

41

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:59:26 PM

32

1376.50

XCSE

GENMAB A/S

27-Mar-25

1:59:43 PM

72

1376.00

CEUX

GENMAB A/S

27-Mar-25

2:00:31 PM

27

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:00:31 PM

73

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:00:57 PM

74

1376.00

CEUX

GENMAB A/S

27-Mar-25

2:01:28 PM

10

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:01:28 PM

78

1376.50

CEUX

GENMAB A/S

27-Mar-25

2:01:28 PM

9

1376.50

TQEX

GENMAB A/S

27-Mar-25

2:01:28 PM

14

1376.50

TQEX

GENMAB A/S

27-Mar-25

2:01:38 PM

2

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:01:57 PM

39

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:04:58 PM

27

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:04:58 PM

23

1376.00

AQEU

GENMAB A/S

27-Mar-25

2:05:19 PM

39

1375.50

XCSE

98

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:05:19 PM

10

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:05:19 PM

73

1375.50

CEUX

GENMAB A/S

27-Mar-25

2:05:19 PM

22

1375.50

TQEX

GENMAB A/S

27-Mar-25

2:06:06 PM

10

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

9

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

9

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

7

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

8

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

10

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

20

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

9

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

10

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

13

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

11

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

10

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

10

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:06 PM

8

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:23 PM

8

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:23 PM

20

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:06:23 PM

3

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:07:25 PM

44

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:25 PM

8

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:25 PM

11

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:25 PM

9

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:25 PM

9

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:25 PM

30

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:25 PM

17

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:46 PM

7

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:46 PM

10

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:46 PM

10

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:07:46 PM

3

1375.00

XCSE

GENMAB A/S

27-Mar-25

2:08:12 PM

24

1374.50

XCSE

GENMAB A/S

27-Mar-25

2:08:12 PM

51

1374.50

XCSE

GENMAB A/S

27-Mar-25

2:08:12 PM

15

1374.50

AQEU

GENMAB A/S

27-Mar-25

2:09:39 PM

30

1374.50

XCSE

GENMAB A/S

27-Mar-25

2:09:39 PM

9

1374.50

XCSE

GENMAB A/S

27-Mar-25

2:09:39 PM

17

1374.50

XCSE

GENMAB A/S

27-Mar-25

2:09:39 PM

58

1374.50

CEUX

GENMAB A/S

27-Mar-25

2:09:39 PM

14

1374.50

CEUX

GENMAB A/S

27-Mar-25

2:09:39 PM

8

1374.50

AQEU

GENMAB A/S

27-Mar-25

2:09:41 PM

23

1374.00

TQEX

GENMAB A/S

27-Mar-25

2:11:06 PM

12

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:11:15 PM

61

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:11:38 PM

30

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:11:38 PM

43

1374.00

XCSE

99

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:11:38 PM

8

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:11:38 PM

17

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:11:38 PM

44

1374.00

CEUX

GENMAB A/S

27-Mar-25

2:11:38 PM

34

1374.00

CEUX

GENMAB A/S

27-Mar-25

2:11:38 PM

30

1373.50

TQEX

GENMAB A/S

27-Mar-25

2:11:38 PM

24

1373.50

AQEU

GENMAB A/S

27-Mar-25

2:12:16 PM

9

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:12:16 PM

12

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:12:16 PM

9

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:12:16 PM

10

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:12:16 PM

13

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:12:16 PM

10

1374.00

XCSE

GENMAB A/S

27-Mar-25

2:12:46 PM

24

1373.00

XCSE

GENMAB A/S

27-Mar-25

2:13:18 PM

49

1373.00

XCSE

GENMAB A/S

27-Mar-25

2:14:25 PM

41

1373.00

XCSE

GENMAB A/S

27-Mar-25

2:14:25 PM

10

1373.00

XCSE

GENMAB A/S

27-Mar-25

2:14:25 PM

8

1373.00

XCSE

GENMAB A/S

27-Mar-25

2:14:25 PM

10

1373.00

XCSE

GENMAB A/S

27-Mar-25

2:14:25 PM

49

1373.00

CEUX

GENMAB A/S

27-Mar-25

2:14:25 PM

32

1373.50

CEUX

GENMAB A/S

27-Mar-25

2:14:36 PM

7

1372.50

XCSE

GENMAB A/S

27-Mar-25

2:14:36 PM

7

1372.50

XCSE

GENMAB A/S

27-Mar-25

2:14:36 PM

12

1372.50

XCSE

GENMAB A/S

27-Mar-25

2:14:36 PM

4

1372.50

XCSE

GENMAB A/S

27-Mar-25

2:14:36 PM

10

1372.50

XCSE

GENMAB A/S

27-Mar-25

2:14:41 PM

19

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:14:41 PM

54

1375.50

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

13

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

3

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

43

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

7

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

9

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

15

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

2

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

8

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

12

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

6

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

4

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:10 PM

9

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:16 PM

13

1376.00

XCSE

GENMAB A/S

27-Mar-25

2:17:25 PM

22

1377.00

CEUX

GENMAB A/S

27-Mar-25

2:17:30 PM

12

1377.00

XCSE

GENMAB A/S

27-Mar-25

2:17:31 PM

73

1377.50

XCSE

GENMAB A/S

27-Mar-25

2:17:31 PM

5

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:18:09 PM

73

1377.00

CEUX

100

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:18:09 PM

22

1377.00

TQEX

GENMAB A/S

27-Mar-25

2:21:23 PM

72

1376.50

XCSE

GENMAB A/S

27-Mar-25

2:21:24 PM

5

1376.50

CEUX

GENMAB A/S

27-Mar-25

2:21:24 PM

36

1376.50

CEUX

GENMAB A/S

27-Mar-25

2:22:31 PM

5

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:31 PM

5

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:31 PM

5

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:31 PM

30

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:31 PM

9

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:31 PM

1

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:31 PM

5

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:32 PM

12

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:46 PM

62

1377.50

XCSE

GENMAB A/S

27-Mar-25

2:22:46 PM

31

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:49 PM

62

1377.50

XCSE

GENMAB A/S

27-Mar-25

2:22:49 PM

31

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:22:51 PM

15

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:23:12 PM

5

1377.00

CEUX

GENMAB A/S

27-Mar-25

2:23:29 PM

98

1377.00

XCSE

GENMAB A/S

27-Mar-25

2:23:29 PM

69

1377.00

CEUX

GENMAB A/S

27-Mar-25

2:23:29 PM

42

1377.00

TQEX

GENMAB A/S

27-Mar-25

2:23:29 PM

10

1376.50

AQEU

GENMAB A/S

27-Mar-25

2:23:30 PM

98

1377.00

XCSE

GENMAB A/S

27-Mar-25

2:24:48 PM

4

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:24:49 PM

73

1377.00

CEUX

GENMAB A/S

27-Mar-25

2:24:49 PM

25

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:24:49 PM

4

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:24:49 PM

5

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:24:49 PM

4

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:25:20 PM

10

1378.00

CEUX

GENMAB A/S

27-Mar-25

2:25:41 PM

10

1378.50

XCSE

GENMAB A/S

27-Mar-25

2:25:41 PM

8

1378.50

XCSE

GENMAB A/S

27-Mar-25

2:25:41 PM

7

1378.50

XCSE

GENMAB A/S

27-Mar-25

2:25:41 PM

12

1378.50

XCSE

GENMAB A/S

27-Mar-25

2:26:19 PM

23

1380.50

XCSE

GENMAB A/S

27-Mar-25

2:26:19 PM

62

1380.50

XCSE

GENMAB A/S

27-Mar-25

2:26:19 PM

32

1380.50

CEUX

GENMAB A/S

27-Mar-25

2:26:20 PM

44

1380.50

XCSE

GENMAB A/S

27-Mar-25

2:26:41 PM

12

1381.00

CEUX

GENMAB A/S

27-Mar-25

2:26:41 PM

7

1381.00

CEUX

GENMAB A/S

27-Mar-25

2:26:59 PM

15

1381.00

CEUX

GENMAB A/S

27-Mar-25

2:27:14 PM

10

1381.00

CEUX

GENMAB A/S

27-Mar-25

2:27:23 PM

30

1380.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

17

1381.50

XCSE

101

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:27:26 PM

17

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

1

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

9

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

42

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

7

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

4

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:26 PM

12

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:36 PM

17

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:36 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:36 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:36 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:36 PM

7

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:37 PM

2

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:37 PM

12

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:27:42 PM

4

1381.50

CEUX

GENMAB A/S

27-Mar-25

2:27:50 PM

73

1381.00

CEUX

GENMAB A/S

27-Mar-25

2:28:20 PM

30

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:28:21 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:28:21 PM

12

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:28:21 PM

9

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:28:21 PM

8

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:28:30 PM

8

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:28:30 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:29:02 PM

98

1381.00

XCSE

GENMAB A/S

27-Mar-25

2:29:02 PM

74

1379.50

XCSE

GENMAB A/S

27-Mar-25

2:29:02 PM

76

1378.50

XCSE

GENMAB A/S

27-Mar-25

2:29:02 PM

76

1380.50

XCSE

GENMAB A/S

27-Mar-25

2:29:02 PM

77

1381.00

CEUX

GENMAB A/S

27-Mar-25

2:29:02 PM

34

1379.00

CEUX

GENMAB A/S

27-Mar-25

2:29:02 PM

41

1379.00

CEUX

GENMAB A/S

27-Mar-25

2:29:02 PM

72

1380.00

CEUX

GENMAB A/S

27-Mar-25

2:29:02 PM

29

1379.50

TQEX

GENMAB A/S

27-Mar-25

2:29:02 PM

38

1380.50

TQEX

GENMAB A/S

27-Mar-25

2:29:02 PM

32

1378.50

TQEX

GENMAB A/S

27-Mar-25

2:29:02 PM

23

1378.50

AQEU

GENMAB A/S

27-Mar-25

2:29:03 PM

22

1377.50

XCSE

GENMAB A/S

27-Mar-25

2:29:03 PM

50

1377.50

XCSE

GENMAB A/S

27-Mar-25

2:29:03 PM

71

1377.50

CEUX

GENMAB A/S

27-Mar-25

2:29:36 PM

10

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:36 PM

12

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:36 PM

12

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:46 PM

8

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:46 PM

37

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:46 PM

15

1379.00

XCSE

102

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:29:46 PM

11

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:46 PM

8

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:46 PM

8

1379.00

XCSE

GENMAB A/S

27-Mar-25

2:29:48 PM

5

1378.50

CEUX

GENMAB A/S

27-Mar-25

2:30:05 PM

28

1379.50

CEUX

GENMAB A/S

27-Mar-25

2:31:09 PM

1

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:31:09 PM

19

1382.50

CEUX

GENMAB A/S

27-Mar-25

2:31:09 PM

57

1382.50

CEUX

GENMAB A/S

27-Mar-25

2:31:09 PM

26

1382.50

TQEX

GENMAB A/S

27-Mar-25

2:31:15 PM

13

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:31:15 PM

10

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:31:15 PM

22

1381.50

TQEX

GENMAB A/S

27-Mar-25

2:31:21 PM

29

1381.50

XCSE

GENMAB A/S

27-Mar-25

2:31:35 PM

15

1382.50

XCSE

GENMAB A/S

27-Mar-25

2:31:35 PM

1

1382.50

XCSE

GENMAB A/S

27-Mar-25

2:31:35 PM

38

1382.50

XCSE

GENMAB A/S

27-Mar-25

2:31:35 PM

20

1382.50

XCSE

GENMAB A/S

27-Mar-25

2:31:45 PM

30

1382.50

CEUX

GENMAB A/S

27-Mar-25

2:31:48 PM

8

1383.00

XCSE

GENMAB A/S

27-Mar-25

2:31:48 PM

12

1383.00

XCSE

GENMAB A/S

27-Mar-25

2:31:48 PM

9

1383.00

XCSE

GENMAB A/S

27-Mar-25

2:31:50 PM

10

1383.00

XCSE

GENMAB A/S

27-Mar-25

2:31:51 PM

7

1383.00

XCSE

GENMAB A/S

27-Mar-25

2:31:54 PM

13

1383.00

XCSE

GENMAB A/S

27-Mar-25

2:32:01 PM

14

1383.00

XCSE

GENMAB A/S

27-Mar-25

2:32:52 PM

56

1384.50

CEUX

GENMAB A/S

27-Mar-25

2:32:52 PM

29

1385.00

TQEX

GENMAB A/S

27-Mar-25

2:32:53 PM

34

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:33:26 PM

73

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:33:26 PM

24

1386.00

TQEX

GENMAB A/S

27-Mar-25

2:34:21 PM

49

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:34:21 PM

2

1386.50

XCSE

GENMAB A/S

27-Mar-25

2:34:21 PM

11

1386.50

XCSE

GENMAB A/S

27-Mar-25

2:34:21 PM

24

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:34:21 PM

4

1386.50

XCSE

GENMAB A/S

27-Mar-25

2:34:21 PM

10

1386.50

XCSE

GENMAB A/S

27-Mar-25

2:34:21 PM

74

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:34:21 PM

23

1386.00

TQEX

GENMAB A/S

27-Mar-25

2:34:28 PM

12

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:34:28 PM

33

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:34:29 PM

42

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:34:44 PM

33

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:35:24 PM

31

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:35:24 PM

8

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:35:25 PM

8

1386.00

CEUX

103

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:35:27 PM

10

1385.00

XCSE

GENMAB A/S

27-Mar-25

2:35:27 PM

5

1385.00

XCSE

GENMAB A/S

27-Mar-25

2:35:27 PM

67

1385.00

XCSE

GENMAB A/S

27-Mar-25

2:35:27 PM

14

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:35:27 PM

39

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:35:27 PM

4

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:35:27 PM

31

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:35:27 PM

4

1385.50

CEUX

GENMAB A/S

27-Mar-25

2:35:27 PM

8

1385.00

TQEX

GENMAB A/S

27-Mar-25

2:35:27 PM

11

1385.00

TQEX

GENMAB A/S

27-Mar-25

2:35:27 PM

3

1385.00

TQEX

GENMAB A/S

27-Mar-25

2:35:27 PM

14

1385.50

AQEU

GENMAB A/S

27-Mar-25

2:35:27 PM

26

1385.50

AQEU

GENMAB A/S

27-Mar-25

2:35:57 PM

19

1384.50

CEUX

GENMAB A/S

27-Mar-25

2:35:57 PM

36

1384.50

CEUX

GENMAB A/S

27-Mar-25

2:36:05 PM

42

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:36:05 PM

56

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:36:07 PM

21

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:36:38 PM

19

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:36:39 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:39 PM

17

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:39 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:39 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:52 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:52 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:52 PM

11

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:52 PM

36

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:36:52 PM

5

1387.00

CEUX

GENMAB A/S

27-Mar-25

2:36:52 PM

5

1387.00

CEUX

GENMAB A/S

27-Mar-25

2:36:52 PM

56

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:36:55 PM

20

1386.50

AQEU

GENMAB A/S

27-Mar-25

2:36:55 PM

2

1386.50

AQEU

GENMAB A/S

27-Mar-25

2:37:01 PM

74

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:37:01 PM

85

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:37:01 PM

24

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:37:01 PM

5

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:37:01 PM

73

1385.50

CEUX

GENMAB A/S

27-Mar-25

2:37:01 PM

12

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:37:01 PM

9

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:37:01 PM

25

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:37:01 PM

33

1385.50

TQEX

GENMAB A/S

27-Mar-25

2:37:30 PM

8

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:37:33 PM

28

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:37:33 PM

25

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:37:33 PM

40

1386.00

CEUX

104

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:38:01 PM

32

1385.50

TQEX

GENMAB A/S

27-Mar-25

2:38:12 PM

14

1387.00

CEUX

GENMAB A/S

27-Mar-25

2:39:14 PM

14

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

55

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

55

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

36

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

7

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

40

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

55

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

3

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:14 PM

29

1388.00

XCSE

GENMAB A/S

27-Mar-25

2:39:20 PM

59

1387.00

CEUX

GENMAB A/S

27-Mar-25

2:39:21 PM

44

1387.50

XCSE

GENMAB A/S

27-Mar-25

2:39:49 PM

23

1387.00

TQEX

GENMAB A/S

27-Mar-25

2:39:49 PM

32

1387.00

AQEU

GENMAB A/S

27-Mar-25

2:40:01 PM

73

1386.50

XCSE

GENMAB A/S

27-Mar-25

2:40:01 PM

11

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:01 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:01 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:01 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:01 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

30

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

20

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

11

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

26

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:02 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

20

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

11

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

13

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:03 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:04 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:04 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:04 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:05 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:05 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:05 PM

10

1387.00

XCSE

105

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:40:05 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:05 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:06 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:06 PM

22

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:06 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:06 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:07 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:08 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:08 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:08 PM

49

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:08 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:08 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:08 PM

17

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:08 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:10 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:10 PM

7

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:10 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:12 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

6

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

30

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

43

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

1

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

10

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

11

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:40:13 PM

16

1387.00

CEUX

GENMAB A/S

27-Mar-25

2:40:13 PM

74

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:40:13 PM

15

1387.00

CEUX

GENMAB A/S

27-Mar-25

2:40:13 PM

31

1386.00

TQEX

GENMAB A/S

27-Mar-25

2:40:14 PM

25

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:40:14 PM

40

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:41:05 PM

73

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:41:12 PM

15

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:41:12 PM

13

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:41:12 PM

19

1386.00

XCSE

106

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:41:12 PM

24

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:41:25 PM

28

1385.50

AQEU

GENMAB A/S

27-Mar-25

2:42:15 PM

19

1385.50

CEUX

GENMAB A/S

27-Mar-25

2:42:15 PM

23

1386.00

TQEX

GENMAB A/S

27-Mar-25

2:42:15 PM

13

1386.00

AQEU

GENMAB A/S

27-Mar-25

2:42:16 PM

9

1386.00

AQEU

GENMAB A/S

27-Mar-25

2:42:30 PM

68

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:42:30 PM

10

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:42:30 PM

72

1385.50

CEUX

GENMAB A/S

27-Mar-25

2:42:30 PM

36

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:35 PM

4

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:35 PM

11

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:35 PM

5

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:40 PM

8

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:43 PM

4

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:43 PM

22

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:43 PM

18

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:43 PM

5

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:43 PM

25

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:45 PM

10

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:52 PM

19

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:52 PM

22

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:52 PM

10

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:52 PM

11

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:52 PM

9

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:52 PM

15

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:42:52 PM

41

1386.00

TQEX

GENMAB A/S

27-Mar-25

2:42:59 PM

77

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:42:59 PM

41

1386.00

AQEU

GENMAB A/S

27-Mar-25

2:43:00 PM

13

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:43:00 PM

11

1385.00

XCSE

GENMAB A/S

27-Mar-25

2:43:00 PM

32

1385.00

XCSE

GENMAB A/S

27-Mar-25

2:43:00 PM

24

1385.00

CEUX

GENMAB A/S

27-Mar-25

2:43:05 PM

1

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:43:05 PM

23

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:43:05 PM

42

1384.50

CEUX

GENMAB A/S

27-Mar-25

2:43:11 PM

10

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:43:12 PM

29

1384.50

XCSE

GENMAB A/S

27-Mar-25

2:43:12 PM

30

1384.50

CEUX

GENMAB A/S

27-Mar-25

2:43:27 PM

1

1384.50

CEUX

GENMAB A/S

27-Mar-25

2:44:21 PM

10

1384.00

XCSE

GENMAB A/S

27-Mar-25

2:44:21 PM

30

1384.00

XCSE

GENMAB A/S

27-Mar-25

2:44:21 PM

15

1384.00

CEUX

GENMAB A/S

27-Mar-25

2:44:21 PM

22

1384.00

AQEU

GENMAB A/S

27-Mar-25

2:44:22 PM

20

1384.00

CEUX

107

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:44:22 PM

2

1384.00

CEUX

GENMAB A/S

27-Mar-25

2:44:26 PM

9

1383.50

XCSE

GENMAB A/S

27-Mar-25

2:44:26 PM

9

1383.50

XCSE

GENMAB A/S

27-Mar-25

2:44:26 PM

10

1383.50

XCSE

GENMAB A/S

27-Mar-25

2:44:26 PM

10

1383.50

XCSE

GENMAB A/S

27-Mar-25

2:45:11 PM

74

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:45:11 PM

15

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:45:11 PM

22

1386.00

TQEX

GENMAB A/S

27-Mar-25

2:45:11 PM

24

1386.00

AQEU

GENMAB A/S

27-Mar-25

2:45:20 PM

10

1385.50

XCSE

GENMAB A/S

27-Mar-25

2:45:21 PM

3

1385.50

CEUX

GENMAB A/S

27-Mar-25

2:45:23 PM

4

1385.50

CEUX

GENMAB A/S

27-Mar-25

2:45:33 PM

78

1386.00

CEUX

GENMAB A/S

27-Mar-25

2:45:43 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:43 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:43 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:43 PM

13

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:43 PM

20

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:43 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:43 PM

19

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:45:43 PM

58

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:45:45 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:45 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:45 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:45 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:45 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:45 PM

20

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:45 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:45 PM

20

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:46 PM

2

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:45:46 PM

1

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:45:47 PM

11

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:47 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:48 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:48 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:48 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:48 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:48 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:51 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:51 PM

19

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:51 PM

1

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:45:52 PM

14

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:52 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:52 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:52 PM

10

1387.00

XCSE

108

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:45:52 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:52 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:52 PM

10

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:52 PM

9

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:53 PM

8

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:45:56 PM

7

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:46:01 PM

13

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:46:07 PM

75

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:46:07 PM

22

1387.00

TQEX

GENMAB A/S

27-Mar-25

2:46:07 PM

25

1387.00

AQEU

GENMAB A/S

27-Mar-25

2:46:15 PM

21

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:46:15 PM

20

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:46:15 PM

8

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:46:19 PM

14

1387.00

AQEU

GENMAB A/S

27-Mar-25

2:46:20 PM

74

1387.00

XCSE

GENMAB A/S

27-Mar-25

2:46:26 PM

20

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:46:26 PM

30

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:46:26 PM

10

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:46:26 PM

1

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:46:26 PM

14

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:46:26 PM

10

1387.00

AQEU

GENMAB A/S

27-Mar-25

2:46:30 PM

24

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:46:41 PM

4

1386.00

XCSE

GENMAB A/S

27-Mar-25

2:46:52 PM

74

1386.50

XCSE

GENMAB A/S

27-Mar-25

2:46:52 PM

74

1386.50

CEUX

GENMAB A/S

27-Mar-25

2:46:52 PM

28

1386.00

AQEU

GENMAB A/S

27-Mar-25

2:47:43 PM

74

1386.50

XCSE

GENMAB A/S

27-Mar-25

2:47:59 PM

19

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:03 PM

17

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:06 PM

12

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:09 PM

2

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:11 PM

1

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:11 PM

1

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:11 PM

1

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:11 PM

1

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:15 PM

22

1388.00

CEUX

GENMAB A/S

27-Mar-25

2:48:21 PM

15

1388.00

TQEX

GENMAB A/S

27-Mar-25

2:48:54 PM

72

1389.00

XCSE

GENMAB A/S

27-Mar-25

2:48:54 PM

9

1389.00

XCSE

GENMAB A/S

27-Mar-25

2:48:54 PM

14

1389.00

XCSE

GENMAB A/S

27-Mar-25

2:48:54 PM

3

1389.00

XCSE

GENMAB A/S

27-Mar-25

2:49:24 PM

9

1390.00

XCSE

GENMAB A/S

27-Mar-25

2:49:24 PM

20

1390.00

XCSE

GENMAB A/S

27-Mar-25

2:49:24 PM

10

1390.00

XCSE

GENMAB A/S

27-Mar-25

2:49:24 PM

8

1390.00

XCSE

109

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:49:25 PM

42

1390.00

XCSE

GENMAB A/S

27-Mar-25

2:49:41 PM

20

1389.50

XCSE

GENMAB A/S

27-Mar-25

2:49:41 PM

18

1389.50

CEUX

GENMAB A/S

27-Mar-25

2:49:41 PM

5

1389.50

CEUX

GENMAB A/S

27-Mar-25

2:49:41 PM

45

1389.50

CEUX

GENMAB A/S

27-Mar-25

2:49:41 PM

5

1389.50

CEUX

GENMAB A/S

27-Mar-25

2:49:41 PM

22

1389.50

TQEX

GENMAB A/S

27-Mar-25

2:49:41 PM

22

1389.50

AQEU

GENMAB A/S

27-Mar-25

2:50:27 PM

56

1390.50

XCSE

GENMAB A/S

27-Mar-25

2:50:27 PM

3

1390.50

XCSE

GENMAB A/S

27-Mar-25

2:50:30 PM

68

1391.00

XCSE

GENMAB A/S

27-Mar-25

2:50:32 PM

7

1391.00

XCSE

GENMAB A/S

27-Mar-25

2:50:32 PM

4

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:50:32 PM

1

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:50:32 PM

1

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:50:32 PM

12

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:50:32 PM

25

1391.00

TQEX

GENMAB A/S

27-Mar-25

2:50:46 PM

56

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:50:46 PM

19

1390.50

AQEU

GENMAB A/S

27-Mar-25

2:50:48 PM

60

1390.50

XCSE

GENMAB A/S

27-Mar-25

2:50:48 PM

3

1390.50

AQEU

GENMAB A/S

27-Mar-25

2:51:23 PM

31

1392.00

XCSE

GENMAB A/S

27-Mar-25

2:51:23 PM

46

1392.00

XCSE

GENMAB A/S

27-Mar-25

2:51:23 PM

10

1391.50

CEUX

GENMAB A/S

27-Mar-25

2:51:23 PM

10

1391.50

CEUX

GENMAB A/S

27-Mar-25

2:51:23 PM

2

1391.50

CEUX

GENMAB A/S

27-Mar-25

2:51:23 PM

8

1391.50

CEUX

GENMAB A/S

27-Mar-25

2:51:24 PM

53

1392.00

XCSE

GENMAB A/S

27-Mar-25

2:51:24 PM

27

1392.00

XCSE

GENMAB A/S

27-Mar-25

2:51:31 PM

6

1391.00

XCSE

GENMAB A/S

27-Mar-25

2:51:31 PM

44

1391.50

CEUX

GENMAB A/S

27-Mar-25

2:51:31 PM

26

1391.50

AQEU

GENMAB A/S

27-Mar-25

2:51:34 PM

2

1391.50

AQEU

GENMAB A/S

27-Mar-25

2:51:35 PM

52

1390.00

XCSE

GENMAB A/S

27-Mar-25

2:51:35 PM

21

1390.00

XCSE

GENMAB A/S

27-Mar-25

2:51:35 PM

71

1391.00

XCSE

GENMAB A/S

27-Mar-25

2:51:35 PM

41

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:51:35 PM

31

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:51:35 PM

4

1390.50

AQEU

GENMAB A/S

27-Mar-25

2:51:35 PM

18

1390.50

AQEU

GENMAB A/S

27-Mar-25

2:51:46 PM

10

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:51:59 PM

77

1390.00

XCSE

GENMAB A/S

27-Mar-25

2:51:59 PM

59

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:51:59 PM

6

1390.50

CEUX

GENMAB A/S

27-Mar-25

2:51:59 PM

6

1390.50

TQEX

110

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:51:59 PM

17

1390.50

TQEX

GENMAB A/S

27-Mar-25

2:51:59 PM

2

1390.00

AQEU

GENMAB A/S

27-Mar-25

2:51:59 PM

2

1390.00

AQEU

GENMAB A/S

27-Mar-25

2:52:29 PM

24

1390.00

AQEU

GENMAB A/S

27-Mar-25

2:52:54 PM

2

1392.00

CEUX

GENMAB A/S

27-Mar-25

2:52:54 PM

8

1392.00

CEUX

GENMAB A/S

27-Mar-25

2:53:26 PM

8

1394.00

XCSE

GENMAB A/S

27-Mar-25

2:53:31 PM

74

1393.50

XCSE

GENMAB A/S

27-Mar-25

2:53:50 PM

73

1392.50

XCSE

GENMAB A/S

27-Mar-25

2:53:50 PM

73

1393.00

CEUX

GENMAB A/S

27-Mar-25

2:53:50 PM

10

1392.00

CEUX

GENMAB A/S

27-Mar-25

2:53:50 PM

41

1393.00

TQEX

GENMAB A/S

27-Mar-25

2:54:16 PM

69

1393.00

XCSE

GENMAB A/S

27-Mar-25

2:54:16 PM

9

1393.00

XCSE

GENMAB A/S

27-Mar-25

2:54:16 PM

4

1393.00

CEUX

GENMAB A/S

27-Mar-25

2:54:16 PM

72

1393.00

CEUX

GENMAB A/S

27-Mar-25

2:54:16 PM

28

1393.00

AQEU

GENMAB A/S

27-Mar-25

2:54:20 PM

76

1393.00

XCSE

GENMAB A/S

27-Mar-25

2:54:27 PM

5

1392.00

CEUX

GENMAB A/S

27-Mar-25

2:54:31 PM

5

1392.00

CEUX

GENMAB A/S

27-Mar-25

2:54:31 PM

15

1392.00

CEUX

GENMAB A/S

27-Mar-25

2:55:28 PM

2

1392.50

XCSE

GENMAB A/S

27-Mar-25

2:55:28 PM

28

1392.50

XCSE

GENMAB A/S

27-Mar-25

2:55:30 PM

48

1392.50

XCSE

GENMAB A/S

27-Mar-25

2:56:07 PM

72

1392.50

XCSE

GENMAB A/S

27-Mar-25

2:56:38 PM

10

1394.00

CEUX

GENMAB A/S

27-Mar-25

2:56:38 PM

21

1394.00

CEUX

GENMAB A/S

27-Mar-25

2:56:51 PM

30

1394.00

XCSE

GENMAB A/S

27-Mar-25

2:56:51 PM

47

1394.00

XCSE

GENMAB A/S

27-Mar-25

2:56:51 PM

46

1394.00

CEUX

GENMAB A/S

27-Mar-25

2:57:09 PM

15

1394.00

XCSE

GENMAB A/S

27-Mar-25

2:57:09 PM

9

1394.00

XCSE

GENMAB A/S

27-Mar-25

2:57:24 PM

22

1393.50

TQEX

GENMAB A/S

27-Mar-25

2:57:29 PM

8

1394.50

XCSE

GENMAB A/S

27-Mar-25

2:57:29 PM

32

1394.50

XCSE

GENMAB A/S

27-Mar-25

2:57:29 PM

31

1394.50

XCSE

GENMAB A/S

27-Mar-25

2:57:29 PM

1

1394.50

XCSE

GENMAB A/S

27-Mar-25

2:57:29 PM

16

1394.50

XCSE

GENMAB A/S

27-Mar-25

2:57:29 PM

10

1394.50

XCSE

GENMAB A/S

27-Mar-25

2:58:45 PM

3

1396.00

CEUX

GENMAB A/S

27-Mar-25

2:58:55 PM

29

1397.00

XCSE

GENMAB A/S

27-Mar-25

2:58:55 PM

4

1397.00

XCSE

GENMAB A/S

27-Mar-25

2:58:55 PM

65

1397.00

XCSE

GENMAB A/S

27-Mar-25

2:58:55 PM

95

1397.00

XCSE

GENMAB A/S

27-Mar-25

2:59:28 PM

1

1396.00

CEUX

111

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

2:59:54 PM

12

1398.00

XCSE

GENMAB A/S

27-Mar-25

2:59:54 PM

49

1398.00

XCSE

GENMAB A/S

27-Mar-25

2:59:54 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

2:59:54 PM

27

1398.00

XCSE

GENMAB A/S

27-Mar-25

2:59:56 PM

52

1398.00

XCSE

GENMAB A/S

27-Mar-25

2:59:56 PM

8

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:00:01 PM

9

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:00:09 PM

13

1399.00

CEUX

GENMAB A/S

27-Mar-25

3:00:10 PM

78

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:00:10 PM

45

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:00:10 PM

29

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:00:10 PM

1

1399.00

CEUX

GENMAB A/S

27-Mar-25

3:00:10 PM

22

1398.50

TQEX

GENMAB A/S

27-Mar-25

3:01:01 PM

2

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:01:01 PM

21

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:01:01 PM

9

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:01:01 PM

10

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:01:01 PM

10

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:01:01 PM

5

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:01:01 PM

4

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:01:01 PM

2

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:01:01 PM

5

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:01:01 PM

23

1401.50

TQEX

GENMAB A/S

27-Mar-25

3:01:22 PM

76

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:01:22 PM

76

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:01:22 PM

19

1402.50

AQEU

GENMAB A/S

27-Mar-25

3:01:22 PM

3

1402.50

AQEU

GENMAB A/S

27-Mar-25

3:01:23 PM

28

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:01:23 PM

77

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:01:23 PM

48

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:01:23 PM

47

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:01:23 PM

28

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:01:23 PM

76

1400.00

CEUX

GENMAB A/S

27-Mar-25

3:01:23 PM

31

1401.50

AQEU

GENMAB A/S

27-Mar-25

3:01:23 PM

22

1400.00

AQEU

GENMAB A/S

27-Mar-25

3:02:03 PM

72

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:02:03 PM

22

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:02:03 PM

26

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:02:13 PM

75

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:02:13 PM

42

1402.50

TQEX

GENMAB A/S

27-Mar-25

3:02:35 PM

30

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:02:35 PM

22

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:03:07 PM

4

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:03:07 PM

9

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:03:15 PM

25

1402.50

XCSE

112

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:03:34 PM

34

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:03:34 PM

77

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:03:34 PM

23

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:03:43 PM

17

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:03:43 PM

40

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:04:28 PM

29

1403.00

AQEU

GENMAB A/S

27-Mar-25

3:04:51 PM

45

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:04:51 PM

9

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:04:51 PM

10

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:04:52 PM

12

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:05:27 PM

54

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:05:27 PM

3

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:05:31 PM

63

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:06:45 PM

32

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:07:07 PM

19

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:07:07 PM

17

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:07:13 PM

50

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:07:15 PM

30

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:07:15 PM

25

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:07:15 PM

13

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:07:15 PM

26

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:07:15 PM

43

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:07:15 PM

16

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:07:15 PM

73

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:07:15 PM

76

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:07:15 PM

73

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:07:15 PM

9

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:07:15 PM

22

1403.00

TQEX

GENMAB A/S

27-Mar-25

3:07:15 PM

22

1402.00

TQEX

GENMAB A/S

27-Mar-25

3:07:15 PM

22

1403.00

AQEU

GENMAB A/S

27-Mar-25

3:07:15 PM

29

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:07:17 PM

40

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:07:18 PM

10

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:07:18 PM

14

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:07:21 PM

33

1401.00

AQEU

GENMAB A/S

27-Mar-25

3:07:27 PM

78

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:07:27 PM

34

1400.50

CEUX

GENMAB A/S

27-Mar-25

3:09:00 PM

40

1402.00

TQEX

GENMAB A/S

27-Mar-25

3:09:35 PM

4

1406.00

XCSE

GENMAB A/S

27-Mar-25

3:09:41 PM

55

1406.50

CEUX

GENMAB A/S

27-Mar-25

3:09:41 PM

17

1406.50

CEUX

GENMAB A/S

27-Mar-25

3:09:42 PM

9

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:09:49 PM

73

1406.50

XCSE

GENMAB A/S

27-Mar-25

3:10:03 PM

11

1409.00

XCSE

GENMAB A/S

27-Mar-25

3:10:04 PM

73

1408.50

XCSE

113

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:10:04 PM

30

1409.00

XCSE

GENMAB A/S

27-Mar-25

3:10:04 PM

9

1409.00

XCSE

GENMAB A/S

27-Mar-25

3:10:04 PM

12

1409.00

XCSE

GENMAB A/S

27-Mar-25

3:10:04 PM

43

1409.00

XCSE

GENMAB A/S

27-Mar-25

3:10:04 PM

4

1409.00

XCSE

GENMAB A/S

27-Mar-25

3:10:04 PM

72

1408.50

CEUX

GENMAB A/S

27-Mar-25

3:10:04 PM

33

1409.00

AQEU

GENMAB A/S

27-Mar-25

3:10:06 PM

72

1408.00

XCSE

GENMAB A/S

27-Mar-25

3:10:06 PM

52

1408.50

CEUX

GENMAB A/S

27-Mar-25

3:10:06 PM

22

1408.50

AQEU

GENMAB A/S

27-Mar-25

3:10:35 PM

9

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

73

1408.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

15

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

15

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

10

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

5

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

15

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

5

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:10:35 PM

48

1407.00

CEUX

GENMAB A/S

27-Mar-25

3:10:35 PM

14

1408.00

CEUX

GENMAB A/S

27-Mar-25

3:10:35 PM

42

1409.00

CEUX

GENMAB A/S

27-Mar-25

3:10:35 PM

13

1408.00

CEUX

GENMAB A/S

27-Mar-25

3:10:35 PM

24

1407.50

AQEU

GENMAB A/S

27-Mar-25

3:10:35 PM

30

1408.50

AQEU

GENMAB A/S

27-Mar-25

3:11:10 PM

22

1408.50

CEUX

GENMAB A/S

27-Mar-25

3:11:22 PM

35

1407.50

XCSE

GENMAB A/S

27-Mar-25

3:11:22 PM

41

1407.50

XCSE

GENMAB A/S

27-Mar-25

3:11:22 PM

27

1407.50

CEUX

GENMAB A/S

27-Mar-25

3:11:22 PM

23

1407.50

AQEU

GENMAB A/S

27-Mar-25

3:12:00 PM

72

1407.00

XCSE

GENMAB A/S

27-Mar-25

3:12:00 PM

22

1407.00

CEUX

GENMAB A/S

27-Mar-25

3:12:00 PM

22

1407.00

TQEX

GENMAB A/S

27-Mar-25

3:12:00 PM

19

1407.00

AQEU

GENMAB A/S

27-Mar-25

3:12:03 PM

5

1407.00

AQEU

GENMAB A/S

27-Mar-25

3:12:06 PM

26

1406.00

XCSE

GENMAB A/S

27-Mar-25

3:12:06 PM

10

1406.00

XCSE

GENMAB A/S

27-Mar-25

3:12:06 PM

40

1406.00

XCSE

GENMAB A/S

27-Mar-25

3:12:11 PM

8

1406.00

AQEU

GENMAB A/S

27-Mar-25

3:12:13 PM

41

1405.50

CEUX

GENMAB A/S

27-Mar-25

3:12:13 PM

24

1406.00

AQEU

GENMAB A/S

27-Mar-25

3:12:43 PM

78

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:12:43 PM

22

1404.00

CEUX

GENMAB A/S

27-Mar-25

3:12:43 PM

24

1405.00

AQEU

GENMAB A/S

27-Mar-25

3:12:43 PM

24

1403.50

AQEU

GENMAB A/S

27-Mar-25

3:12:44 PM

24

1403.00

XCSE

114

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:12:44 PM

50

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:12:59 PM

53

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:12:59 PM

35

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:12:59 PM

17

1402.50

AQEU

GENMAB A/S

27-Mar-25

3:13:19 PM

43

1404.00

XCSE

GENMAB A/S

27-Mar-25

3:13:19 PM

22

1403.50

AQEU

GENMAB A/S

27-Mar-25

3:14:07 PM

18

1404.00

TQEX

GENMAB A/S

27-Mar-25

3:14:10 PM

62

1404.00

XCSE

GENMAB A/S

27-Mar-25

3:14:10 PM

24

1404.00

CEUX

GENMAB A/S

27-Mar-25

3:14:10 PM

16

1404.00

CEUX

GENMAB A/S

27-Mar-25

3:14:10 PM

3

1404.00

AQEU

GENMAB A/S

27-Mar-25

3:14:36 PM

10

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:14:36 PM

4

1404.00

AQEU

GENMAB A/S

27-Mar-25

3:14:36 PM

16

1404.00

AQEU

GENMAB A/S

27-Mar-25

3:14:40 PM

22

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:14:40 PM

30

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:14:48 PM

7

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:14:48 PM

24

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:15:03 PM

43

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:15:03 PM

22

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:15:32 PM

47

1400.50

XCSE

GENMAB A/S

27-Mar-25

3:15:32 PM

21

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:15:32 PM

36

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:15:32 PM

5

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:15:32 PM

20

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:15:32 PM

26

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:15:32 PM

6

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:15:32 PM

2

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:15:32 PM

23

1401.00

TQEX

GENMAB A/S

27-Mar-25

3:15:33 PM

36

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:15:33 PM

7

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:15:33 PM

19

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:15:48 PM

60

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:15:51 PM

16

1399.00

CEUX

GENMAB A/S

27-Mar-25

3:15:51 PM

7

1399.00

CEUX

GENMAB A/S

27-Mar-25

3:15:55 PM

3

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:15:55 PM

21

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:15:55 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:16:14 PM

29

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:16:14 PM

29

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:17:09 PM

19

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:17:13 PM

25

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:17:13 PM

7

1396.00

XCSE

GENMAB A/S

27-Mar-25

3:17:13 PM

29

1396.50

CEUX

GENMAB A/S

27-Mar-25

3:17:13 PM

3

1398.00

CEUX

115

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:17:13 PM

25

1396.50

TQEX

GENMAB A/S

27-Mar-25

3:17:13 PM

23

1398.00

AQEU

GENMAB A/S

27-Mar-25

3:17:13 PM

22

1397.00

AQEU

GENMAB A/S

27-Mar-25

3:17:16 PM

60

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:18:13 PM

15

1397.50

CEUX

GENMAB A/S

27-Mar-25

3:18:34 PM

17

1397.50

CEUX

GENMAB A/S

27-Mar-25

3:19:56 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:19:56 PM

13

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:19:56 PM

41

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:20:34 PM

17

1396.00

XCSE

GENMAB A/S

27-Mar-25

3:20:34 PM

30

1396.50

CEUX

GENMAB A/S

27-Mar-25

3:20:34 PM

22

1396.50

TQEX

GENMAB A/S

27-Mar-25

3:21:09 PM

76

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:21:09 PM

39

1397.00

CEUX

GENMAB A/S

27-Mar-25

3:21:09 PM

22

1397.00

CEUX

GENMAB A/S

27-Mar-25

3:21:17 PM

16

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:21:17 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:21:17 PM

42

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:21:17 PM

42

1397.00

TQEX

GENMAB A/S

27-Mar-25

3:21:17 PM

22

1397.00

AQEU

GENMAB A/S

27-Mar-25

3:21:24 PM

10

1396.00

XCSE

GENMAB A/S

27-Mar-25

3:21:32 PM

10

1396.00

XCSE

GENMAB A/S

27-Mar-25

3:21:32 PM

10

1396.00

XCSE

GENMAB A/S

27-Mar-25

3:21:38 PM

4

1396.00

XCSE

GENMAB A/S

27-Mar-25

3:21:50 PM

39

1396.00

XCSE

GENMAB A/S

27-Mar-25

3:22:05 PM

55

1396.50

CEUX

GENMAB A/S

27-Mar-25

3:22:08 PM

29

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:22:19 PM

11

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:19 PM

11

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:20 PM

47

1397.00

CEUX

GENMAB A/S

27-Mar-25

3:22:28 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:36 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:37 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:37 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:46 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:52 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:22:58 PM

12

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:23:09 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:24:34 PM

41

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:24:34 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:24:34 PM

24

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:24:34 PM

73

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:25:24 PM

1

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:25:24 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:25:24 PM

2

1399.00

XCSE

116

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:25:24 PM

7

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:25:24 PM

14

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:25:58 PM

7

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:25:58 PM

31

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:25:58 PM

42

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:25:58 PM

18

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:26:01 PM

42

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:26:01 PM

12

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:26:01 PM

10

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:26:01 PM

8

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:26:01 PM

10

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:26:07 PM

11

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:26:07 PM

31

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:26:07 PM

18

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:26:07 PM

42

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:26:07 PM

76

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:26:07 PM

22

1403.00

TQEX

GENMAB A/S

27-Mar-25

3:26:07 PM

11

1403.00

AQEU

GENMAB A/S

27-Mar-25

3:26:07 PM

4

1403.00

AQEU

GENMAB A/S

27-Mar-25

3:26:07 PM

11

1403.00

AQEU

GENMAB A/S

27-Mar-25

3:26:20 PM

10

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:26:20 PM

30

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:26:20 PM

10

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:26:20 PM

1

1403.50

CEUX

GENMAB A/S

27-Mar-25

3:26:20 PM

44

1403.50

CEUX

GENMAB A/S

27-Mar-25

3:26:20 PM

4

1403.50

CEUX

GENMAB A/S

27-Mar-25

3:26:20 PM

2

1403.50

CEUX

GENMAB A/S

27-Mar-25

3:26:20 PM

22

1403.50

TQEX

GENMAB A/S

27-Mar-25

3:26:32 PM

76

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:26:32 PM

67

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:26:32 PM

78

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:26:32 PM

32

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:26:32 PM

28

1403.00

AQEU

GENMAB A/S

27-Mar-25

3:27:09 PM

74

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:27:09 PM

23

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:27:09 PM

3

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:27:09 PM

21

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:27:55 PM

77

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:27:55 PM

28

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:27:55 PM

23

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:27:55 PM

2

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:27:58 PM

77

1400.50

XCSE

GENMAB A/S

27-Mar-25

3:28:19 PM

7

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:28:19 PM

69

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:28:56 PM

5

1402.00

CEUX

117

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:29:11 PM

9

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:29:11 PM

18

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:29:11 PM

5

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:29:11 PM

22

1402.00

TQEX

GENMAB A/S

27-Mar-25

3:29:11 PM

42

1402.00

AQEU

GENMAB A/S

27-Mar-25

3:29:15 PM

12

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:29:16 PM

20

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:29:16 PM

34

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:30:15 PM

73

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:30:15 PM

41

1402.00

TQEX

GENMAB A/S

27-Mar-25

3:31:07 PM

72

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:31:07 PM

60

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:31:10 PM

77

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:31:10 PM

5

1401.50

CEUX

GENMAB A/S

27-Mar-25

3:31:10 PM

18

1401.50

CEUX

GENMAB A/S

27-Mar-25

3:31:50 PM

16

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:32:46 PM

4

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:33:01 PM

10

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:33:01 PM

4

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:33:01 PM

9

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

8

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

24

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

30

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

77

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

26

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

74

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

10

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:07 PM

48

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:33:07 PM

22

1401.00

AQEU

GENMAB A/S

27-Mar-25

3:33:07 PM

22

1402.50

AQEU

GENMAB A/S

27-Mar-25

3:33:30 PM

73

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:33:30 PM

10

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:30 PM

64

1402.00

XCSE

GENMAB A/S

27-Mar-25

3:33:30 PM

40

1402.50

CEUX

GENMAB A/S

27-Mar-25

3:34:17 PM

72

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:34:17 PM

48

1405.00

CEUX

GENMAB A/S

27-Mar-25

3:34:17 PM

22

1405.00

TQEX

GENMAB A/S

27-Mar-25

3:34:17 PM

22

1405.00

AQEU

GENMAB A/S

27-Mar-25

3:34:28 PM

45

1404.00

CEUX

GENMAB A/S

27-Mar-25

3:35:06 PM

17

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:35:06 PM

13

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:35:06 PM

5

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:35:06 PM

14

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:35:17 PM

77

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:35:38 PM

19

1404.50

CEUX

118

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:35:38 PM

34

1404.50

CEUX

GENMAB A/S

27-Mar-25

3:36:01 PM

10

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:36:01 PM

10

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:36:01 PM

9

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:36:01 PM

8

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:36:40 PM

38

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:36:40 PM

60

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:36:45 PM

5

1404.00

AQEU

GENMAB A/S

27-Mar-25

3:36:56 PM

6

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:36:56 PM

32

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:37:16 PM

47

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:37:36 PM

41

1404.00

XCSE

GENMAB A/S

27-Mar-25

3:37:36 PM

11

1404.00

XCSE

GENMAB A/S

27-Mar-25

3:37:36 PM

43

1404.00

XCSE

GENMAB A/S

27-Mar-25

3:37:42 PM

50

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:37:42 PM

74

1404.00

CEUX

GENMAB A/S

27-Mar-25

3:37:42 PM

30

1404.00

AQEU

GENMAB A/S

27-Mar-25

3:39:58 PM

42

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:39:58 PM

23

1403.50

XCSE

GENMAB A/S

27-Mar-25

3:39:58 PM

22

1403.50

TQEX

GENMAB A/S

27-Mar-25

3:40:04 PM

46

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:40:07 PM

33

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:40:08 PM

42

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:40:08 PM

44

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:40:08 PM

12

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:40:12 PM

13

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:40:12 PM

11

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:40:13 PM

30

1402.50

AQEU

GENMAB A/S

27-Mar-25

3:40:19 PM

53

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:41:10 PM

38

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:41:10 PM

60

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:41:10 PM

29

1404.50

TQEX

GENMAB A/S

27-Mar-25

3:41:10 PM

8

1404.50

AQEU

GENMAB A/S

27-Mar-25

3:41:24 PM

73

1405.00

CEUX

GENMAB A/S

27-Mar-25

3:41:24 PM

24

1405.00

TQEX

GENMAB A/S

27-Mar-25

3:41:44 PM

30

1405.50

XCSE

GENMAB A/S

27-Mar-25

3:41:44 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

3:41:44 PM

22

1405.50

XCSE

GENMAB A/S

27-Mar-25

3:41:44 PM

37

1405.50

XCSE

GENMAB A/S

27-Mar-25

3:41:53 PM

14

1406.00

XCSE

GENMAB A/S

27-Mar-25

3:42:12 PM

40

1406.50

XCSE

GENMAB A/S

27-Mar-25

3:42:12 PM

4

1406.50

XCSE

GENMAB A/S

27-Mar-25

3:42:12 PM

40

1406.50

XCSE

GENMAB A/S

27-Mar-25

3:42:12 PM

19

1406.50

XCSE

GENMAB A/S

27-Mar-25

3:42:12 PM

33

1406.50

XCSE

119

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:42:12 PM

10

1406.50

XCSE

GENMAB A/S

27-Mar-25

3:42:12 PM

30

1406.50

CEUX

GENMAB A/S

27-Mar-25

3:42:12 PM

47

1406.50

CEUX

GENMAB A/S

27-Mar-25

3:42:12 PM

12

1406.50

TQEX

GENMAB A/S

27-Mar-25

3:42:12 PM

22

1406.50

TQEX

GENMAB A/S

27-Mar-25

3:42:28 PM

77

1405.50

XCSE

GENMAB A/S

27-Mar-25

3:42:28 PM

73

1404.50

XCSE

GENMAB A/S

27-Mar-25

3:42:28 PM

77

1405.50

CEUX

GENMAB A/S

27-Mar-25

3:42:28 PM

37

1405.00

AQEU

GENMAB A/S

27-Mar-25

3:42:40 PM

72

1404.00

CEUX

GENMAB A/S

27-Mar-25

3:42:41 PM

78

1403.00

XCSE

GENMAB A/S

27-Mar-25

3:42:41 PM

73

1403.00

CEUX

GENMAB A/S

27-Mar-25

3:42:42 PM

11

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:42:42 PM

12

1402.50

XCSE

GENMAB A/S

27-Mar-25

3:42:46 PM

49

1402.00

CEUX

GENMAB A/S

27-Mar-25

3:42:56 PM

72

1401.50

XCSE

GENMAB A/S

27-Mar-25

3:43:26 PM

62

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:43:26 PM

22

1400.50

CEUX

GENMAB A/S

27-Mar-25

3:44:03 PM

22

1399.00

CEUX

GENMAB A/S

27-Mar-25

3:44:53 PM

4

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:46:20 PM

13

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:46:20 PM

25

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:46:20 PM

1

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:46:20 PM

10

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:46:20 PM

9

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:46:46 PM

72

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:02 PM

11

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:02 PM

1

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:02 PM

7

1400.50

XCSE

GENMAB A/S

27-Mar-25

3:48:02 PM

30

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:02 PM

27

1400.00

TQEX

GENMAB A/S

27-Mar-25

3:48:02 PM

3

1400.00

AQEU

GENMAB A/S

27-Mar-25

3:48:02 PM

21

1400.00

AQEU

GENMAB A/S

27-Mar-25

3:48:03 PM

13

1400.50

XCSE

GENMAB A/S

27-Mar-25

3:48:21 PM

2

1400.50

AQEU

GENMAB A/S

27-Mar-25

3:48:21 PM

2

1400.50

AQEU

GENMAB A/S

27-Mar-25

3:48:21 PM

20

1400.50

AQEU

GENMAB A/S

27-Mar-25

3:48:21 PM

3

1400.50

AQEU

GENMAB A/S

27-Mar-25

3:48:48 PM

42

1400.50

XCSE

GENMAB A/S

27-Mar-25

3:48:48 PM

77

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:48 PM

9

1400.50

XCSE

GENMAB A/S

27-Mar-25

3:48:48 PM

20

1400.50

XCSE

GENMAB A/S

27-Mar-25

3:48:50 PM

1

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:50 PM

12

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:50 PM

9

1400.00

XCSE

120

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:48:50 PM

14

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:48:57 PM

9

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:49:06 PM

14

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:49:06 PM

61

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:49:06 PM

1

1401.00

CEUX

GENMAB A/S

27-Mar-25

3:49:07 PM

9

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:07 PM

21

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:09 PM

20

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:09 PM

26

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:09 PM

42

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:09 PM

10

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:10 PM

37

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:10 PM

10

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:10 PM

8

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:10 PM

42

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:10 PM

8

1401.00

XCSE

GENMAB A/S

27-Mar-25

3:49:17 PM

76

1400.50

CEUX

GENMAB A/S

27-Mar-25

3:49:21 PM

27

1400.00

TQEX

GENMAB A/S

27-Mar-25

3:49:22 PM

14

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:49:22 PM

4

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:49:44 PM

22

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:49:44 PM

22

1399.00

TQEX

GENMAB A/S

27-Mar-25

3:49:45 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:49:45 PM

6

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:49:45 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:49:45 PM

30

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:49:45 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:49:45 PM

18

1399.00

AQEU

GENMAB A/S

27-Mar-25

3:49:46 PM

22

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:51:53 PM

42

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:51:53 PM

37

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:51:53 PM

42

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:51:53 PM

37

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:51:53 PM

14

1400.00

XCSE

GENMAB A/S

27-Mar-25

3:51:53 PM

36

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:51:53 PM

2

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:51:53 PM

15

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:51:53 PM

71

1399.50

CEUX

GENMAB A/S

27-Mar-25

3:51:53 PM

7

1399.50

TQEX

GENMAB A/S

27-Mar-25

3:51:53 PM

15

1399.50

TQEX

GENMAB A/S

27-Mar-25

3:51:56 PM

17

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:51:56 PM

11

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:52:46 PM

9

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:52:46 PM

9

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:52:46 PM

42

1398.50

XCSE

121

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:52:46 PM

25

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:52:46 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

3:52:46 PM

25

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:52:46 PM

75

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:52:46 PM

22

1398.50

TQEX

GENMAB A/S

27-Mar-25

3:53:35 PM

9

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:53:35 PM

25

1398.50

XCSE

GENMAB A/S

27-Mar-25

3:54:58 PM

2

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:58 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:58 PM

14

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:58 PM

42

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:58 PM

30

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:58 PM

25

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:58 PM

36

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:54:58 PM

24

1398.00

AQEU

GENMAB A/S

27-Mar-25

3:54:59 PM

18

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:59 PM

39

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:59 PM

29

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:59 PM

30

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:59 PM

42

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:54:59 PM

30

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:56:09 PM

74

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:56:09 PM

37

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:56:09 PM

77

1397.00

CEUX

GENMAB A/S

27-Mar-25

3:56:09 PM

40

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:56:09 PM

27

1397.00

TQEX

GENMAB A/S

27-Mar-25

3:56:09 PM

23

1398.00

TQEX

GENMAB A/S

27-Mar-25

3:56:09 PM

22

1397.00

AQEU

GENMAB A/S

27-Mar-25

3:56:09 PM

33

1398.00

AQEU

GENMAB A/S

27-Mar-25

3:56:10 PM

32

1397.00

CEUX

GENMAB A/S

27-Mar-25

3:56:16 PM

1

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:56:16 PM

44

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:56:16 PM

12

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:56:17 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:56:17 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

3:56:56 PM

34

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:56:56 PM

41

1398.50

CEUX

GENMAB A/S

27-Mar-25

3:57:07 PM

29

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:57:07 PM

18

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:57:07 PM

30

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:57:07 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:57:07 PM

2

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:57:07 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:57:08 PM

98

1399.00

XCSE

GENMAB A/S

27-Mar-25

3:57:08 PM

98

1399.00

XCSE

122

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

3:57:21 PM

29

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:57:21 PM

46

1397.50

XCSE

GENMAB A/S

27-Mar-25

3:57:21 PM

32

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:57:21 PM

40

1398.00

AQEU

GENMAB A/S

27-Mar-25

3:57:39 PM

9

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:59:49 PM

76

1398.00

XCSE

GENMAB A/S

27-Mar-25

3:59:49 PM

32

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:59:49 PM

24

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:59:49 PM

25

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:59:52 PM

28

1398.00

CEUX

GENMAB A/S

27-Mar-25

3:59:52 PM

25

1398.00

AQEU

GENMAB A/S

27-Mar-25

4:00:03 PM

26

1398.50

TQEX

GENMAB A/S

27-Mar-25

4:00:05 PM

26

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:00:05 PM

8

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:00:05 PM

1

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:00:05 PM

10

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:00:05 PM

8

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:00:05 PM

36

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:05 PM

4

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:05 PM

5

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:05 PM

5

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:11 PM

15

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:00:11 PM

1

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:00:11 PM

4

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:11 PM

5

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:11 PM

5

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:11 PM

5

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:12 PM

15

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:00:45 PM

74

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:01:06 PM

41

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:06 PM

12

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:06 PM

45

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:06 PM

77

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:01:06 PM

36

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:01:06 PM

22

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:01:07 PM

12

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:07 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:07 PM

8

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:07 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:07 PM

78

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:01:07 PM

45

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:07 PM

32

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:01:21 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:21 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:21 PM

32

1398.00

XCSE

123

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:01:21 PM

78

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:01:21 PM

45

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:21 PM

77

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:01:21 PM

2

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:01:21 PM

72

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:01:21 PM

5

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:01:21 PM

33

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:01:22 PM

11

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:01:22 PM

9

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:01:22 PM

16

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:01:34 PM

20

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:01:34 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:01:34 PM

7

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:01:34 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:01:34 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:01:34 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:05:02 PM

73

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:05:02 PM

45

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:05:02 PM

2

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:05:02 PM

14

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:05:02 PM

10

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:05:02 PM

41

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:05:02 PM

75

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:05:02 PM

75

1396.00

CEUX

GENMAB A/S

27-Mar-25

4:05:02 PM

25

1396.50

TQEX

GENMAB A/S

27-Mar-25

4:05:02 PM

11

1396.50

AQEU

GENMAB A/S

27-Mar-25

4:05:02 PM

11

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:05:02 PM

19

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:05:02 PM

15

1396.50

AQEU

GENMAB A/S

27-Mar-25

4:05:12 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

24

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

8

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

45

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:12 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:05:17 PM

10

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:05:17 PM

6

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:05:17 PM

5

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:05:17 PM

5

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:05:47 PM

73

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:05:47 PM

36

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:05:47 PM

4

1398.50

CEUX

124

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:05:47 PM

3

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:05:47 PM

34

1398.50

AQEU

GENMAB A/S

27-Mar-25

4:06:21 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:06:21 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:06:21 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:06:21 PM

6

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:06:21 PM

24

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:07:20 PM

36

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:07:20 PM

33

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:07:48 PM

8

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:07:48 PM

36

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:07:48 PM

21

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:07:48 PM

14

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:07:48 PM

29

1400.00

TQEX

GENMAB A/S

27-Mar-25

4:07:55 PM

1

1400.00

AQEU

GENMAB A/S

27-Mar-25

4:08:07 PM

44

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:07 PM

75

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:07 PM

15

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:08:07 PM

24

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:08:07 PM

34

1400.00

AQEU

GENMAB A/S

27-Mar-25

4:08:11 PM

30

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:08:11 PM

36

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:08:11 PM

72

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:08:21 PM

19

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:21 PM

41

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:21 PM

3

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:22 PM

10

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:40 PM

26

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:40 PM

30

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:08:40 PM

36

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:08:59 PM

74

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:09:02 PM

12

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:09:36 PM

19

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:36 PM

30

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:40 PM

10

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:10:42 PM

28

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

48

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

45

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

11

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

30

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

25

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

1

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:42 PM

6

1399.50

XCSE

125

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:10:42 PM

30

1399.00

TQEX

GENMAB A/S

27-Mar-25

4:10:42 PM

29

1399.00

AQEU

GENMAB A/S

27-Mar-25

4:10:43 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:43 PM

30

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:43 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:43 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:10:48 PM

77

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:48 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:48 PM

12

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:48 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:48 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:10:48 PM

4

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:10:48 PM

5

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:10:48 PM

4

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:10:48 PM

25

1399.00

TQEX

GENMAB A/S

27-Mar-25

4:11:09 PM

73

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:11:10 PM

3

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:11:12 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

15

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

38

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

44

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

37

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

6

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

11

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:12 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

16

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

45

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

39

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

3

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:13 PM

38

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

14

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

25

1399.00

XCSE

126

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:11:14 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

14

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

45

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

38

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:14 PM

13

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:15 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:15 PM

9

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:15 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:16 PM

8

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:23 PM

13

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:41 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:11:41 PM

38

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:11:41 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:11:41 PM

8

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:11:41 PM

17

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:11:41 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:11:41 PM

8

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:11:48 PM

36

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:48 PM

10

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:11:55 PM

13

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:12:37 PM

10

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

8

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

17

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

45

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

3

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

8

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

32

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

10

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

10

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:37 PM

8

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:46 PM

9

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:50 PM

14

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:12:53 PM

36

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:12:56 PM

7

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:12:57 PM

8

1400.00

XCSE

GENMAB A/S

27-Mar-25

4:13:05 PM

36

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:13:06 PM

41

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:13:06 PM

20

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:13:28 PM

47

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:13:29 PM

5

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:13:29 PM

4

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:13:29 PM

36

1400.00

CEUX

127

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:13:29 PM

5

1400.00

CEUX

GENMAB A/S

27-Mar-25

4:13:44 PM

12

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:44 PM

39

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:44 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:44 PM

4

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:13:44 PM

36

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:13:44 PM

4

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:13:44 PM

5

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:13:45 PM

44

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

17

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

7

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

18

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

9

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

7

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:54 PM

22

1399.50

CEUX

GENMAB A/S

27-Mar-25

4:13:55 PM

2

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:55 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:55 PM

10

1399.50

XCSE

GENMAB A/S

27-Mar-25

4:13:58 PM

74

1399.00

XCSE

GENMAB A/S

27-Mar-25

4:13:58 PM

75

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:13:58 PM

22

1399.00

TQEX

GENMAB A/S

27-Mar-25

4:13:58 PM

23

1399.00

AQEU

GENMAB A/S

27-Mar-25

4:14:18 PM

78

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:14:18 PM

23

1398.00

TQEX

GENMAB A/S

27-Mar-25

4:14:18 PM

10

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:14:26 PM

72

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:14:26 PM

16

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:14:27 PM

25

1397.00

TQEX

GENMAB A/S

27-Mar-25

4:15:02 PM

27

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:15:02 PM

19

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:15:02 PM

16

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:15:04 PM

5

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:15:18 PM

53

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:15:59 PM

10

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:16:08 PM

5

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:16:29 PM

10

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:16:29 PM

12

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:16:29 PM

11

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:16:59 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:16:59 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:16:59 PM

1

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:16:59 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:16:59 PM

9

1397.00

XCSE

128

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:16:59 PM

8

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:16:59 PM

32

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:17:14 PM

30

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:17:14 PM

20

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:17:14 PM

15

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:17:23 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:23 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:23 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:23 PM

26

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:23 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

8

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

9

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

1

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

10

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

11

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

44

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

29

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

12

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

11

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:17:53 PM

22

1396.50

TQEX

GENMAB A/S

27-Mar-25

4:17:54 PM

17

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:54 PM

2

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:55 PM

13

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:55 PM

3

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:55 PM

25

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:55 PM

13

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:56 PM

18

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:56 PM

8

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:56 PM

9

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:56 PM

1

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:58 PM

9

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:17:58 PM

10

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:18:09 PM

28

1396.50

CEUX

GENMAB A/S

27-Mar-25

4:18:09 PM

17

1396.50

CEUX

GENMAB A/S

27-Mar-25

4:18:39 PM

26

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:18:39 PM

7

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:18:39 PM

8

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:18:39 PM

17

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:18:39 PM

8

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:18:39 PM

8

1396.50

XCSE

129

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:18:39 PM

78

1396.00

CEUX

GENMAB A/S

27-Mar-25

4:18:39 PM

10

1396.50

CEUX

GENMAB A/S

27-Mar-25

4:18:39 PM

28

1396.50

CEUX

GENMAB A/S

27-Mar-25

4:18:39 PM

21

1396.50

CEUX

GENMAB A/S

27-Mar-25

4:18:40 PM

11

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:19:08 PM

72

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:20:49 PM

76

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:20:50 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:20:51 PM

2

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:20:51 PM

6

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:21:11 PM

75

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:21:11 PM

32

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:21:29 PM

19

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:21:31 PM

7

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:22:08 PM

15

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:22:08 PM

45

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:22:08 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:22:08 PM

12

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:22:08 PM

1

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:22:08 PM

1

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:22:08 PM

69

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:22:08 PM

31

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:22:08 PM

37

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:22:28 PM

65

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:22:34 PM

19

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:22:45 PM

32

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:22:52 PM

21

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:22:55 PM

49

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:23:03 PM

12

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:23:03 PM

30

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:23:03 PM

34

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:23:08 PM

44

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:23:08 PM

4

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:23:59 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:23:59 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:23:59 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:24:01 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:24:13 PM

12

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:13 PM

19

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:24:13 PM

36

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:24:17 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:17 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:17 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:17 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:17 PM

8

1397.00

XCSE

130

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:24:17 PM

16

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

43

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

41

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

11

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

18

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:18 PM

28

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:19 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:24:44 PM

1

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:24:44 PM

30

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:24:44 PM

1

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:24:44 PM

16

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:24:44 PM

7

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:25:29 PM

17

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:25:29 PM

9

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:25:29 PM

21

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:25:29 PM

12

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:26:08 PM

3

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

46

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

42

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

30

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

14

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

11

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

12

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

13

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

28

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:08 PM

26

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:26:08 PM

24

1396.50

CEUX

GENMAB A/S

27-Mar-25

4:26:08 PM

29

1396.50

TQEX

GENMAB A/S

27-Mar-25

4:26:08 PM

25

1396.50

AQEU

GENMAB A/S

27-Mar-25

4:26:09 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

28

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

9

1397.00

XCSE

131

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:26:09 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

25

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

1

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

45

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:09 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:10 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:10 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:10 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:10 PM

2

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:10 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:10 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:10 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:11 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:11 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:11 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:11 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:11 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:11 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:11 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:13 PM

14

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:15 PM

29

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:15 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:16 PM

29

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:16 PM

36

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:26:21 PM

78

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:26:56 PM

12

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:26:56 PM

16

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:27:04 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:27:08 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:08 PM

42

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:08 PM

28

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:08 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:08 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:27 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:27 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:27 PM

23

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:27 PM

5

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:27 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:54 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:54 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:27:54 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:28:11 PM

10

1397.50

XCSE

132

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:28:14 PM

7

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:28:32 PM

12

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:28:37 PM

10

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:28:37 PM

11

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:29:06 PM

9

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:29:50 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:29:50 PM

5

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:29:54 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:29:54 PM

25

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:29:54 PM

1

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:03 PM

75

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:03 PM

42

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:03 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:03 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:03 PM

36

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:03 PM

30

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:03 PM

30

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:03 PM

37

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:30:03 PM

20

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:30:03 PM

27

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:30:05 PM

19

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:05 PM

30

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:05 PM

2

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:05 PM

12

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:05 PM

35

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:05 PM

36

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:05 PM

5

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:25 PM

1

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:34 PM

29

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:34 PM

30

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:34 PM

24

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:34 PM

1

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:34 PM

13

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:34 PM

2

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:34 PM

12

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:34 PM

2

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:40 PM

45

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:40 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:40 PM

8

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:41 PM

7

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:46 PM

11

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:50 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:50 PM

45

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:50 PM

75

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:30:50 PM

9

1398.00

XCSE

133

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:30:50 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:50 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:30:50 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:50 PM

36

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:50 PM

28

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:30:50 PM

19

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:30:50 PM

4

1397.50

AQEU

GENMAB A/S

27-Mar-25

4:30:51 PM

5

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:51 PM

5

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:51 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:30:52 PM

12

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:30:52 PM

4

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:30:52 PM

15

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:30:52 PM

19

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:31:05 PM

13

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:31:33 PM

19

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:31:33 PM

24

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:31:35 PM

22

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:31:41 PM

10

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:31:52 PM

78

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:31:52 PM

48

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:31:52 PM

75

1396.00

CEUX

GENMAB A/S

27-Mar-25

4:31:52 PM

39

1395.00

CEUX

GENMAB A/S

27-Mar-25

4:31:52 PM

23

1395.50

TQEX

GENMAB A/S

27-Mar-25

4:31:52 PM

28

1396.50

TQEX

GENMAB A/S

27-Mar-25

4:31:52 PM

38

1395.50

AQEU

GENMAB A/S

27-Mar-25

4:31:52 PM

25

1396.50

AQEU

GENMAB A/S

27-Mar-25

4:31:56 PM

14

1395.00

XCSE

GENMAB A/S

27-Mar-25

4:31:56 PM

10

1395.00

XCSE

GENMAB A/S

27-Mar-25

4:31:56 PM

11

1395.00

XCSE

GENMAB A/S

27-Mar-25

4:31:56 PM

13

1395.00

XCSE

GENMAB A/S

27-Mar-25

4:31:56 PM

1

1395.00

XCSE

GENMAB A/S

27-Mar-25

4:31:56 PM

41

1395.00

XCSE

GENMAB A/S

27-Mar-25

4:32:15 PM

24

1394.00

XCSE

GENMAB A/S

27-Mar-25

4:32:15 PM

31

1394.50

TQEX

GENMAB A/S

27-Mar-25

4:32:15 PM

24

1394.00

AQEU

GENMAB A/S

27-Mar-25

4:32:19 PM

54

1394.00

CEUX

GENMAB A/S

27-Mar-25

4:32:26 PM

43

1394.00

XCSE

GENMAB A/S

27-Mar-25

4:32:26 PM

8

1394.00

XCSE

GENMAB A/S

27-Mar-25

4:32:58 PM

2

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:32:58 PM

43

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:00 PM

32

1394.00

CEUX

GENMAB A/S

27-Mar-25

4:33:14 PM

45

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:14 PM

10

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:14 PM

8

1393.50

XCSE

134

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:33:14 PM

22

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:14 PM

10

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:14 PM

76

1393.50

CEUX

GENMAB A/S

27-Mar-25

4:33:26 PM

7

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:26 PM

16

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:26 PM

17

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:38 PM

38

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:39 PM

31

1393.50

XCSE

GENMAB A/S

27-Mar-25

4:33:49 PM

34

1393.50

TQEX

GENMAB A/S

27-Mar-25

4:33:49 PM

17

1393.50

AQEU

GENMAB A/S

27-Mar-25

4:33:57 PM

9

1394.00

XCSE

GENMAB A/S

27-Mar-25

4:33:57 PM

5

1394.00

XCSE

GENMAB A/S

27-Mar-25

4:33:57 PM

27

1394.00

XCSE

GENMAB A/S

27-Mar-25

4:34:06 PM

16

1394.00

CEUX

GENMAB A/S

27-Mar-25

4:34:16 PM

19

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:16 PM

9

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:17 PM

10

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:17 PM

12

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:26 PM

8

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:26 PM

9

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:26 PM

19

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:36 PM

14

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:36 PM

5

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:38 PM

19

1394.00

CEUX

GENMAB A/S

27-Mar-25

4:34:46 PM

8

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:46 PM

8

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:47 PM

15

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:56 PM

7

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:34:56 PM

17

1394.00

CEUX

GENMAB A/S

27-Mar-25

4:35:22 PM

40

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:35:22 PM

34

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:35:22 PM

39

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:35:22 PM

10

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:35:22 PM

23

1394.50

AQEU

GENMAB A/S

27-Mar-25

4:35:30 PM

33

1394.50

AQEU

GENMAB A/S

27-Mar-25

4:36:02 PM

36

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:36:03 PM

10

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:03 PM

9

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:11 PM

9

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:11 PM

10

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:11 PM

45

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:11 PM

11

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:11 PM

24

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:11 PM

10

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:11 PM

9

1394.00

CEUX

135

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:36:11 PM

3

1394.00

CEUX

GENMAB A/S

27-Mar-25

4:36:13 PM

3

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:20 PM

6

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:36:20 PM

30

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:36:21 PM

41

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:36:44 PM

9

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:44 PM

10

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:36:44 PM

36

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:36:45 PM

28

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:36:59 PM

53

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:37:00 PM

45

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:37:00 PM

18

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:37:00 PM

19

1394.50

XCSE

GENMAB A/S

27-Mar-25

4:37:00 PM

55

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:37:27 PM

77

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:37:27 PM

11

1395.50

CEUX

GENMAB A/S

27-Mar-25

4:37:27 PM

9

1395.50

CEUX

GENMAB A/S

27-Mar-25

4:37:31 PM

65

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:37:31 PM

13

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:37:31 PM

43

1396.50

CEUX

GENMAB A/S

27-Mar-25

4:37:31 PM

16

1395.50

CEUX

GENMAB A/S

27-Mar-25

4:37:31 PM

19

1396.00

TQEX

GENMAB A/S

27-Mar-25

4:37:31 PM

3

1396.00

TQEX

GENMAB A/S

27-Mar-25

4:37:31 PM

35

1396.00

AQEU

GENMAB A/S

27-Mar-25

4:38:04 PM

25

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:38:11 PM

61

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:11 PM

48

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:38:11 PM

17

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:11 PM

72

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:11 PM

36

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:38:11 PM

27

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:38:11 PM

29

1397.00

TQEX

GENMAB A/S

27-Mar-25

4:38:11 PM

23

1398.00

TQEX

GENMAB A/S

27-Mar-25

4:38:26 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:26 PM

22

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:26 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:26 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:26 PM

13

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:26 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:46 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:46 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:46 PM

22

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:46 PM

12

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:46 PM

8

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:38:46 PM

13

1397.00

XCSE

136

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:38:49 PM

76

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:38:49 PM

4

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:38:49 PM

7

1395.50

CEUX

GENMAB A/S

27-Mar-25

4:38:49 PM

3

1395.50

CEUX

GENMAB A/S

27-Mar-25

4:38:49 PM

3

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:38:50 PM

4

1394.50

CEUX

GENMAB A/S

27-Mar-25

4:39:26 PM

11

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:26 PM

9

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:26 PM

7

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:26 PM

13

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:26 PM

10

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:45 PM

2

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:45 PM

10

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:45 PM

9

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:45 PM

17

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:49 PM

10

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:49 PM

9

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:49 PM

10

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:39:49 PM

22

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:40:18 PM

42

1395.50

XCSE

GENMAB A/S

27-Mar-25

4:40:26 PM

3

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:40:27 PM

1

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:40:27 PM

6

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:16 PM

4

1396.00

CEUX

GENMAB A/S

27-Mar-25

4:41:16 PM

4

1396.00

CEUX

GENMAB A/S

27-Mar-25

4:41:16 PM

36

1396.00

CEUX

GENMAB A/S

27-Mar-25

4:41:22 PM

32

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:22 PM

19

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:22 PM

2

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:22 PM

45

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:26 PM

9

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:26 PM

8

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:38 PM

63

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:55 PM

4

1396.00

XCSE

GENMAB A/S

27-Mar-25

4:41:56 PM

27

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:42:24 PM

44

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:24 PM

54

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:25 PM

12

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:42:27 PM

20

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:42:28 PM

66

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:42:29 PM

78

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:42:29 PM

19

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:42:29 PM

27

1398.00

TQEX

GENMAB A/S

27-Mar-25

4:42:29 PM

23

1398.00

AQEU

GENMAB A/S

27-Mar-25

4:42:50 PM

36

1397.50

CEUX

137

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:42:50 PM

34

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:42:50 PM

21

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:42:50 PM

23

1397.00

TQEX

GENMAB A/S

27-Mar-25

4:42:50 PM

23

1397.00

AQEU

GENMAB A/S

27-Mar-25

4:42:51 PM

50

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:51 PM

45

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:51 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:51 PM

29

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:51 PM

10

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:51 PM

38

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:51 PM

5

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:51 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

8

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

30

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

8

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

30

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

8

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:42:52 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:43:06 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:43:08 PM

53

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:43:08 PM

9

1398.00

XCSE

GENMAB A/S

27-Mar-25

4:43:24 PM

19

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:43:36 PM

13

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:43:36 PM

27

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:43:36 PM

4

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:43:36 PM

45

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:43:36 PM

9

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:43:40 PM

7

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:43:40 PM

63

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:43:52 PM

25

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:43:52 PM

56

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:43:52 PM

22

1398.00

AQEU

GENMAB A/S

27-Mar-25

4:44:24 PM

8

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:44:24 PM

9

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:44:24 PM

14

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:44:24 PM

41

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:44:31 PM

78

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:44:31 PM

36

1398.00

CEUX

GENMAB A/S

27-Mar-25

4:44:54 PM

22

1398.00

AQEU

GENMAB A/S

27-Mar-25

4:45:12 PM

73

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:45:12 PM

24

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:45:28 PM

42

1397.50

XCSE

138

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:45:40 PM

35

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:45:44 PM

36

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:45:44 PM

21

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:45:44 PM

9

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:46:02 PM

5

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:46:02 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:46:02 PM

36

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:46:02 PM

5

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:46:03 PM

11

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:03 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:46:07 PM

7

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:07 PM

14

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:08 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:09 PM

12

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:13 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:14 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:18 PM

11

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:18 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:19 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:23 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:23 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:24 PM

13

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:46:29 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:46:29 PM

78

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:46:29 PM

10

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:46:29 PM

5

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:29 PM

45

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:29 PM

4

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:29 PM

65

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:29 PM

4

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:29 PM

27

1397.00

AQEU

GENMAB A/S

27-Mar-25

4:46:30 PM

16

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:46:30 PM

12

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:46:30 PM

15

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:30 PM

37

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:46:41 PM

9

1397.00

XCSE

GENMAB A/S

27-Mar-25

4:47:01 PM

20

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:01 PM

36

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:01 PM

8

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:01 PM

34

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:01 PM

24

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:02 PM

7

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:09 PM

15

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:19 PM

11

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:47:19 PM

15

1397.50

CEUX

139

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:47:19 PM

17

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:48:21 PM

35

1396.50

XCSE

GENMAB A/S

27-Mar-25

4:48:22 PM

9

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:48:22 PM

63

1397.00

CEUX

GENMAB A/S

27-Mar-25

4:49:47 PM

9

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:47 PM

36

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:54 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:49:54 PM

8

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:49:54 PM

9

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:49:54 PM

10

1397.50

XCSE

GENMAB A/S

27-Mar-25

4:49:54 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:54 PM

5

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:54 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:55 PM

9

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:55 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:55 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:55 PM

23

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:55 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:49:55 PM

2

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:49:55 PM

2

1397.50

TQEX

GENMAB A/S

27-Mar-25

4:49:58 PM

8

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:50:16 PM

4

1397.50

CEUX

GENMAB A/S

27-Mar-25

4:50:16 PM

39

1398.00

AQEU

GENMAB A/S

27-Mar-25

4:50:19 PM

98

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:50:19 PM

78

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:50:19 PM

74

1398.50

CEUX

GENMAB A/S

27-Mar-25

4:50:20 PM

13

1398.50

AQEU

GENMAB A/S

27-Mar-25

4:50:31 PM

36

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:50:31 PM

78

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:50:31 PM

24

1399.00

CEUX

GENMAB A/S

27-Mar-25

4:50:31 PM

2

1399.00

TQEX

GENMAB A/S

27-Mar-25

4:50:31 PM

2

1399.00

TQEX

GENMAB A/S

27-Mar-25

4:50:37 PM

32

1398.50

XCSE

GENMAB A/S

27-Mar-25

4:51:00 PM

71

1402.00

CEUX

GENMAB A/S

27-Mar-25

4:51:00 PM

27

1402.00

CEUX

GENMAB A/S

27-Mar-25

4:51:00 PM

24

1402.00

CEUX

GENMAB A/S

27-Mar-25

4:51:00 PM

11

1402.00

TQEX

GENMAB A/S

27-Mar-25

4:51:00 PM

11

1402.00

TQEX

GENMAB A/S

27-Mar-25

4:51:09 PM

74

1401.50

XCSE

GENMAB A/S

27-Mar-25

4:51:09 PM

32

1402.00

CEUX

GENMAB A/S

27-Mar-25

4:51:09 PM

2

1402.00

TQEX

GENMAB A/S

27-Mar-25

4:51:09 PM

11

1402.00

TQEX

GENMAB A/S

27-Mar-25

4:51:09 PM

2

1402.00

TQEX

GENMAB A/S

27-Mar-25

4:51:09 PM

23

1401.50

TQEX

GENMAB A/S

27-Mar-25

4:51:09 PM

29

1401.50

AQEU

140

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:51:16 PM

77

1401.50

XCSE

GENMAB A/S

27-Mar-25

4:51:23 PM

25

1402.00

CEUX

GENMAB A/S

27-Mar-25

4:51:46 PM

3

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:46 PM

11

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:46 PM

22

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:47 PM

36

1403.00

CEUX

GENMAB A/S

27-Mar-25

4:51:47 PM

25

1403.00

AQEU

GENMAB A/S

27-Mar-25

4:51:51 PM

8

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

73

1402.50

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

10

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

17

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

45

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

24

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

9

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

45

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

28

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

10

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:51 PM

25

1403.00

CEUX

GENMAB A/S

27-Mar-25

4:51:51 PM

4

1403.00

CEUX

GENMAB A/S

27-Mar-25

4:51:51 PM

5

1403.00

CEUX

GENMAB A/S

27-Mar-25

4:51:51 PM

36

1403.00

CEUX

GENMAB A/S

27-Mar-25

4:51:51 PM

2

1403.00

CEUX

GENMAB A/S

27-Mar-25

4:51:51 PM

44

1402.50

CEUX

GENMAB A/S

27-Mar-25

4:51:51 PM

31

1402.50

TQEX

GENMAB A/S

27-Mar-25

4:51:51 PM

10

1402.00

AQEU

GENMAB A/S

27-Mar-25

4:51:52 PM

8

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

13

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

9

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

45

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

8

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

9

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

45

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

8

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

9

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

30

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

2

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

6

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

1

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

8

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

45

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:51:52 PM

14

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:52:03 PM

10

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:52:03 PM

45

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:52:03 PM

31

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:52:03 PM

9

1403.00

XCSE

141

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:52:03 PM

3

1403.00

XCSE

GENMAB A/S

27-Mar-25

4:52:19 PM

30

1403.50

CEUX

GENMAB A/S

27-Mar-25

4:52:19 PM

3

1403.50

TQEX

GENMAB A/S

27-Mar-25

4:52:19 PM

19

1403.50

TQEX

GENMAB A/S

27-Mar-25

4:52:20 PM

25

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:52:30 PM

31

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:52:30 PM

64

1403.50

XCSE

GENMAB A/S

27-Mar-25

4:52:30 PM

45

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:52:30 PM

22

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:52:30 PM

2

1403.50

XCSE

GENMAB A/S

27-Mar-25

4:52:30 PM

73

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:52:30 PM

17

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:52:30 PM

2

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:52:30 PM

32

1405.00

CEUX

GENMAB A/S

27-Mar-25

4:52:30 PM

22

1405.00

CEUX

GENMAB A/S

27-Mar-25

4:52:30 PM

6

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:52:30 PM

26

1404.50

TQEX

GENMAB A/S

27-Mar-25

4:52:30 PM

11

1403.50

TQEX

GENMAB A/S

27-Mar-25

4:52:30 PM

23

1404.00

AQEU

GENMAB A/S

27-Mar-25

4:52:30 PM

12

1404.50

AQEU

GENMAB A/S

27-Mar-25

4:52:31 PM

22

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:52:31 PM

25

1404.00

AQEU

GENMAB A/S

27-Mar-25

4:52:32 PM

18

1404.00

TQEX

GENMAB A/S

27-Mar-25

4:52:43 PM

51

1404.00

XCSE

GENMAB A/S

27-Mar-25

4:52:50 PM

12

1404.00

TQEX

GENMAB A/S

27-Mar-25

4:53:16 PM

10

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:53:18 PM

17

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

4

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

2

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:35 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:36 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:36 PM

4

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:36 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:38 PM

4

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:38 PM

4

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:38 PM

4

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:38 PM

36

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:39 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:39 PM

5

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:53:39 PM

4

1404.50

CEUX

142

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

27-Mar-25

4:53:49 PM

8

1403.50

XCSE

GENMAB A/S

27-Mar-25

4:53:57 PM

10

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:53:57 PM

10

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:54:03 PM

17

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:54:10 PM

41

1404.00

CEUX

GENMAB A/S

27-Mar-25

4:54:13 PM

19

1404.00

TQEX

GENMAB A/S

27-Mar-25

4:54:13 PM

10

1404.00

TQEX

GENMAB A/S

27-Mar-25

4:54:21 PM

45

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:54:21 PM

8

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:54:21 PM

10

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:54:21 PM

10

1404.50

XCSE

GENMAB A/S

27-Mar-25

4:54:29 PM

78

1404.00

XCSE

GENMAB A/S

27-Mar-25

4:54:37 PM

10

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:37 PM

1

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:37 PM

9

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:37 PM

9

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:37 PM

45

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:37 PM

14

1404.50

CEUX

GENMAB A/S

27-Mar-25

4:54:38 PM

10

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:38 PM

17

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:38 PM

45

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:38 PM

8

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:38 PM

10

1405.00

XCSE

GENMAB A/S

27-Mar-25

4:54:52 PM

28

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

11

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

30

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

10

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

30

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

10

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

8

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

8

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:53 PM

30

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:54 PM

10

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:54 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:54 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:56 PM

30

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:56 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:56 PM

9

1405.50

XCSE

GENMAB A/S

27-Mar-25

4:54:56 PM

10

1405.50

XCSE

GENMAB A/S

28-Mar-25

10:09:21 AM

16

1387.00

TQEX

GENMAB A/S

28-Mar-25

10:10:35 AM

62

1386.00

XCSE

GENMAB A/S

28-Mar-25

10:10:35 AM

64

1387.00

XCSE

143

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

10:10:35 AM

73

1386.00

CEUX

GENMAB A/S

28-Mar-25

10:10:35 AM

50

1387.00

TQEX

GENMAB A/S

28-Mar-25

10:10:35 AM

64

1386.00

TQEX

GENMAB A/S

28-Mar-25

10:10:35 AM

71

1386.50

AQEU

GENMAB A/S

28-Mar-25

10:10:35 AM

49

1385.50

AQEU

GENMAB A/S

28-Mar-25

10:10:35 AM

21

1385.50

AQEU

GENMAB A/S

28-Mar-25

10:12:11 AM

59

1387.50

CEUX

GENMAB A/S

28-Mar-25

10:12:11 AM

8

1387.50

AQEU

GENMAB A/S

28-Mar-25

10:12:11 AM

14

1387.50

AQEU

GENMAB A/S

28-Mar-25

10:21:09 AM

36

1388.50

CEUX

GENMAB A/S

28-Mar-25

10:21:09 AM

25

1388.50

CEUX

GENMAB A/S

28-Mar-25

10:21:09 AM

79

1388.50

CEUX

GENMAB A/S

28-Mar-25

10:21:09 AM

25

1388.50

TQEX

GENMAB A/S

28-Mar-25

10:21:09 AM

22

1388.50

AQEU

GENMAB A/S

28-Mar-25

10:21:10 AM

17

1389.50

TQEX

GENMAB A/S

28-Mar-25

10:21:13 AM

10

1389.50

TQEX

GENMAB A/S

28-Mar-25

10:22:43 AM

55

1389.50

XCSE

GENMAB A/S

28-Mar-25

10:22:43 AM

23

1389.50

XCSE

GENMAB A/S

28-Mar-25

10:22:43 AM

36

1389.50

CEUX

GENMAB A/S

28-Mar-25

10:22:45 AM

34

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:22:45 AM

15

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:22:54 AM

41

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:22:54 AM

11

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:22:54 AM

30

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:24:35 AM

36

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:25:32 AM

1

1389.50

XCSE

GENMAB A/S

28-Mar-25

10:25:32 AM

73

1389.50

XCSE

GENMAB A/S

28-Mar-25

10:25:32 AM

28

1389.50

TQEX

GENMAB A/S

28-Mar-25

10:25:39 AM

20

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

53

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

26

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

12

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

21

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

41

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

28

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

32

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:25:39 AM

15

1389.00

CEUX

GENMAB A/S

28-Mar-25

10:25:40 AM

58

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:26:12 AM

41

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:26:12 AM

26

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:26:12 AM

30

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:26:12 AM

36

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:26:28 AM

26

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:26:28 AM

41

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:26:28 AM

30

1390.00

XCSE

144

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

10:26:28 AM

4

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:26:28 AM

24

1389.50

TQEX

GENMAB A/S

28-Mar-25

10:26:29 AM

79

1389.50

XCSE

GENMAB A/S

28-Mar-25

10:26:29 AM

5

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:26:29 AM

5

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:26:29 AM

17

1389.50

TQEX

GENMAB A/S

28-Mar-25

10:26:29 AM

14

1389.50

TQEX

GENMAB A/S

28-Mar-25

10:26:38 AM

10

1390.50

CEUX

GENMAB A/S

28-Mar-25

10:26:38 AM

13

1390.50

CEUX

GENMAB A/S

28-Mar-25

10:26:38 AM

43

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:26:43 AM

22

1390.50

TQEX

GENMAB A/S

28-Mar-25

10:27:44 AM

54

1391.00

XCSE

GENMAB A/S

28-Mar-25

10:27:44 AM

34

1391.00

XCSE

GENMAB A/S

28-Mar-25

10:27:44 AM

13

1391.00

XCSE

GENMAB A/S

28-Mar-25

10:27:44 AM

33

1391.00

XCSE

GENMAB A/S

28-Mar-25

10:27:45 AM

28

1391.50

TQEX

GENMAB A/S

28-Mar-25

10:28:46 AM

43

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:28:46 AM

41

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:28:46 AM

78

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:28:46 AM

17

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:28:46 AM

80

1392.00

CEUX

GENMAB A/S

28-Mar-25

10:28:46 AM

24

1392.00

AQEU

GENMAB A/S

28-Mar-25

10:29:45 AM

17

1393.00

XCSE

GENMAB A/S

28-Mar-25

10:29:45 AM

41

1393.00

XCSE

GENMAB A/S

28-Mar-25

10:29:45 AM

43

1393.00

XCSE

GENMAB A/S

28-Mar-25

10:29:45 AM

32

1392.50

CEUX

GENMAB A/S

28-Mar-25

10:29:45 AM

26

1392.50

TQEX

GENMAB A/S

28-Mar-25

10:29:49 AM

76

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:29:49 AM

61

1392.50

XCSE

GENMAB A/S

28-Mar-25

10:29:49 AM

14

1392.00

CEUX

GENMAB A/S

28-Mar-25

10:29:49 AM

66

1392.00

CEUX

GENMAB A/S

28-Mar-25

10:29:51 AM

45

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:29:51 AM

14

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:30:05 AM

78

1392.00

XCSE

GENMAB A/S

28-Mar-25

10:30:05 AM

17

1392.00

CEUX

GENMAB A/S

28-Mar-25

10:30:05 AM

62

1392.00

CEUX

GENMAB A/S

28-Mar-25

10:30:19 AM

30

1391.50

XCSE

GENMAB A/S

28-Mar-25

10:30:19 AM

41

1391.50

XCSE

GENMAB A/S

28-Mar-25

10:30:19 AM

16

1391.50

XCSE

GENMAB A/S

28-Mar-25

10:30:20 AM

79

1391.00

XCSE

GENMAB A/S

28-Mar-25

10:30:20 AM

76

1391.00

CEUX

GENMAB A/S

28-Mar-25

10:31:38 AM

79

1390.00

XCSE

GENMAB A/S

28-Mar-25

10:31:38 AM

75

1390.00

CEUX

GENMAB A/S

28-Mar-25

10:32:12 AM

29

1389.00

TQEX

GENMAB A/S

28-Mar-25

10:32:24 AM

76

1388.50

XCSE

145

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

10:32:24 AM

76

1388.50

CEUX

GENMAB A/S

28-Mar-25

10:32:25 AM

2

1387.50

XCSE

GENMAB A/S

28-Mar-25

10:32:25 AM

77

1387.50

XCSE

GENMAB A/S

28-Mar-25

10:32:26 AM

45

1387.00

CEUX

GENMAB A/S

28-Mar-25

10:32:28 AM

11

1387.00

CEUX

GENMAB A/S

28-Mar-25

10:32:30 AM

74

1386.00

XCSE

GENMAB A/S

28-Mar-25

10:32:30 AM

12

1385.50

CEUX

GENMAB A/S

28-Mar-25

10:32:30 AM

35

1385.50

CEUX

GENMAB A/S

28-Mar-25

10:33:05 AM

14

1384.50

CEUX

GENMAB A/S

28-Mar-25

10:33:12 AM

6

1385.00

AQEU

GENMAB A/S

28-Mar-25

10:33:35 AM

77

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:33:35 AM

25

1386.50

CEUX

GENMAB A/S

28-Mar-25

10:33:35 AM

3

1386.50

TQEX

GENMAB A/S

28-Mar-25

10:35:26 AM

74

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:36:00 AM

76

1385.50

XCSE

GENMAB A/S

28-Mar-25

10:36:00 AM

25

1385.50

CEUX

GENMAB A/S

28-Mar-25

10:37:31 AM

33

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:37:31 AM

17

1386.50

CEUX

GENMAB A/S

28-Mar-25

10:38:57 AM

52

1386.50

CEUX

GENMAB A/S

28-Mar-25

10:40:02 AM

30

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:40:02 AM

80

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:40:02 AM

41

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:40:02 AM

12

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:40:02 AM

73

1386.50

CEUX

GENMAB A/S

28-Mar-25

10:40:02 AM

27

1386.00

TQEX

GENMAB A/S

28-Mar-25

10:40:02 AM

22

1386.50

AQEU

GENMAB A/S

28-Mar-25

10:40:03 AM

18

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:40:03 AM

43

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:40:37 AM

50

1387.50

CEUX

GENMAB A/S

28-Mar-25

10:44:41 AM

26

1387.00

XCSE

GENMAB A/S

28-Mar-25

10:44:41 AM

55

1387.00

XCSE

GENMAB A/S

28-Mar-25

10:44:41 AM

13

1387.00

XCSE

GENMAB A/S

28-Mar-25

10:44:41 AM

23

1387.00

TQEX

GENMAB A/S

28-Mar-25

10:44:52 AM

13

1387.00

XCSE

GENMAB A/S

28-Mar-25

10:44:52 AM

7

1387.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

12

1386.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

41

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

30

1387.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

53

1386.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

7

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

11

1386.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

18

1387.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

13

1386.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

12

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

30

1386.00

XCSE

146

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

10:45:50 AM

79

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

35

1386.50

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

41

1386.00

XCSE

GENMAB A/S

28-Mar-25

10:45:50 AM

56

1385.50

CEUX

GENMAB A/S

28-Mar-25

10:45:50 AM

58

1386.50

CEUX

GENMAB A/S

28-Mar-25

10:45:50 AM

5

1386.00

TQEX

GENMAB A/S

28-Mar-25

10:45:50 AM

26

1386.50

AQEU

GENMAB A/S

28-Mar-25

10:45:51 AM

23

1385.50

XCSE

GENMAB A/S

28-Mar-25

10:46:02 AM

27

1385.50

XCSE

GENMAB A/S

28-Mar-25

10:46:02 AM

30

1385.50

XCSE

GENMAB A/S

28-Mar-25

10:46:14 AM

15

1385.00

AQEU

GENMAB A/S

28-Mar-25

10:46:44 AM

10

1384.50

XCSE

GENMAB A/S

28-Mar-25

10:46:44 AM

58

1384.50

XCSE

GENMAB A/S

28-Mar-25

10:46:44 AM

29

1385.00

TQEX

GENMAB A/S

28-Mar-25

10:46:44 AM

1

1385.00

AQEU

GENMAB A/S

28-Mar-25

10:47:06 AM

9

1384.50

XCSE

GENMAB A/S

28-Mar-25

10:48:07 AM

24

1384.00

CEUX

GENMAB A/S

28-Mar-25

10:48:10 AM

12

1384.00

XCSE

GENMAB A/S

28-Mar-25

10:48:10 AM

41

1384.00

XCSE

GENMAB A/S

28-Mar-25

10:48:21 AM

41

1384.00

XCSE

GENMAB A/S

28-Mar-25

10:48:21 AM

6

1384.00

XCSE

GENMAB A/S

28-Mar-25

10:48:41 AM

77

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:48:41 AM

64

1382.50

CEUX

GENMAB A/S

28-Mar-25

10:48:41 AM

16

1382.50

CEUX

GENMAB A/S

28-Mar-25

10:48:41 AM

23

1383.50

TQEX

GENMAB A/S

28-Mar-25

10:48:41 AM

38

1383.50

AQEU

GENMAB A/S

28-Mar-25

10:49:21 AM

74

1382.00

XCSE

GENMAB A/S

28-Mar-25

10:49:21 AM

9

1382.00

TQEX

GENMAB A/S

28-Mar-25

10:49:21 AM

20

1382.00

TQEX

GENMAB A/S

28-Mar-25

10:49:26 AM

24

1382.00

AQEU

GENMAB A/S

28-Mar-25

10:51:01 AM

27

1382.00

XCSE

GENMAB A/S

28-Mar-25

10:51:01 AM

19

1382.00

XCSE

GENMAB A/S

28-Mar-25

10:51:01 AM

14

1382.00

XCSE

GENMAB A/S

28-Mar-25

10:51:01 AM

41

1382.00

XCSE

GENMAB A/S

28-Mar-25

10:51:01 AM

4

1382.00

AQEU

GENMAB A/S

28-Mar-25

10:51:24 AM

77

1381.00

XCSE

GENMAB A/S

28-Mar-25

10:51:24 AM

59

1381.00

CEUX

GENMAB A/S

28-Mar-25

10:51:24 AM

15

1381.00

CEUX

GENMAB A/S

28-Mar-25

10:51:24 AM

23

1381.50

TQEX

GENMAB A/S

28-Mar-25

10:51:24 AM

24

1381.00

AQEU

GENMAB A/S

28-Mar-25

10:52:02 AM

76

1380.00

XCSE

GENMAB A/S

28-Mar-25

10:52:02 AM

13

1380.00

CEUX

GENMAB A/S

28-Mar-25

10:52:02 AM

25

1381.50

CEUX

GENMAB A/S

28-Mar-25

10:52:02 AM

66

1380.00

CEUX

GENMAB A/S

28-Mar-25

10:52:02 AM

2

1380.00

AQEU

147

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

10:52:10 AM

51

1381.50

CEUX

GENMAB A/S

28-Mar-25

10:54:31 AM

37

1382.50

XCSE

GENMAB A/S

28-Mar-25

10:54:31 AM

36

1382.50

XCSE

GENMAB A/S

28-Mar-25

10:54:31 AM

15

1382.50

CEUX

GENMAB A/S

28-Mar-25

10:54:31 AM

9

1382.50

CEUX

GENMAB A/S

28-Mar-25

10:54:31 AM

50

1382.50

CEUX

GENMAB A/S

28-Mar-25

10:57:47 AM

13

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:47 AM

41

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:47 AM

41

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:47 AM

11

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:47 AM

11

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:47 AM

12

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:48 AM

11

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:48 AM

12

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:48 AM

41

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:50 AM

41

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:50 AM

11

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:50 AM

41

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:50 AM

11

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:50 AM

38

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:50 AM

30

1383.00

XCSE

GENMAB A/S

28-Mar-25

10:57:50 AM

78

1382.50

CEUX

GENMAB A/S

28-Mar-25

10:57:50 AM

16

1382.00

AQEU

GENMAB A/S

28-Mar-25

10:58:09 AM

78

1382.00

XCSE

GENMAB A/S

28-Mar-25

10:58:09 AM

26

1382.00

TQEX

GENMAB A/S

28-Mar-25

10:58:09 AM

15

1382.00

AQEU

GENMAB A/S

28-Mar-25

10:59:21 AM

77

1381.00

XCSE

GENMAB A/S

28-Mar-25

10:59:21 AM

32

1381.50

CEUX

GENMAB A/S

28-Mar-25

10:59:21 AM

26

1381.50

CEUX

GENMAB A/S

28-Mar-25

10:59:21 AM

14

1381.00

AQEU

GENMAB A/S

28-Mar-25

10:59:21 AM

8

1381.00

AQEU

GENMAB A/S

28-Mar-25

11:00:37 AM

13

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:00:37 AM

18

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:00:37 AM

74

1380.50

CEUX

GENMAB A/S

28-Mar-25

11:00:37 AM

22

1380.50

TQEX

GENMAB A/S

28-Mar-25

11:00:57 AM

2

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:00:57 AM

14

1380.00

AQEU

GENMAB A/S

28-Mar-25

11:03:27 AM

22

1382.00

TQEX

GENMAB A/S

28-Mar-25

11:04:01 AM

40

1381.50

XCSE

GENMAB A/S

28-Mar-25

11:04:01 AM

40

1381.50

XCSE

GENMAB A/S

28-Mar-25

11:04:01 AM

75

1381.50

CEUX

GENMAB A/S

28-Mar-25

11:05:47 AM

4

1380.50

XCSE

GENMAB A/S

28-Mar-25

11:06:28 AM

37

1381.50

CEUX

GENMAB A/S

28-Mar-25

11:06:28 AM

11

1381.50

CEUX

GENMAB A/S

28-Mar-25

11:06:28 AM

10

1381.50

CEUX

148

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

11:06:51 AM

22

1381.00

TQEX

GENMAB A/S

28-Mar-25

11:06:51 AM

15

1381.00

AQEU

GENMAB A/S

28-Mar-25

11:06:52 AM

72

1380.50

XCSE

GENMAB A/S

28-Mar-25

11:06:52 AM

19

1381.00

AQEU

GENMAB A/S

28-Mar-25

11:07:11 AM

8

1381.50

CEUX

GENMAB A/S

28-Mar-25

11:07:11 AM

3

1381.50

CEUX

GENMAB A/S

28-Mar-25

11:09:59 AM

8

1382.50

CEUX

GENMAB A/S

28-Mar-25

11:10:09 AM

71

1382.50

CEUX

GENMAB A/S

28-Mar-25

11:10:09 AM

15

1382.50

CEUX

GENMAB A/S

28-Mar-25

11:11:49 AM

41

1382.50

XCSE

GENMAB A/S

28-Mar-25

11:11:49 AM

1

1382.50

XCSE

GENMAB A/S

28-Mar-25

11:11:51 AM

20

1382.00

XCSE

GENMAB A/S

28-Mar-25

11:13:00 AM

59

1382.00

XCSE

GENMAB A/S

28-Mar-25

11:13:04 AM

31

1382.00

TQEX

GENMAB A/S

28-Mar-25

11:13:07 AM

23

1382.00

CEUX

GENMAB A/S

28-Mar-25

11:13:07 AM

25

1382.00

AQEU

GENMAB A/S

28-Mar-25

11:13:11 AM

12

1382.00

XCSE

GENMAB A/S

28-Mar-25

11:13:11 AM

32

1382.00

CEUX

GENMAB A/S

28-Mar-25

11:13:11 AM

73

1382.50

CEUX

GENMAB A/S

28-Mar-25

11:13:11 AM

28

1382.50

CEUX

GENMAB A/S

28-Mar-25

11:13:11 AM

1

1382.00

TQEX

GENMAB A/S

28-Mar-25

11:13:11 AM

34

1382.00

TQEX

GENMAB A/S

28-Mar-25

11:13:19 AM

101

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:19 AM

78

1381.50

XCSE

GENMAB A/S

28-Mar-25

11:13:19 AM

65

1381.50

CEUX

GENMAB A/S

28-Mar-25

11:13:19 AM

23

1381.00

TQEX

GENMAB A/S

28-Mar-25

11:13:19 AM

6

1381.00

AQEU

GENMAB A/S

28-Mar-25

11:13:19 AM

20

1381.00

AQEU

GENMAB A/S

28-Mar-25

11:13:20 AM

101

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:20 AM

42

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:20 AM

101

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:20 AM

59

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:20 AM

9

1380.50

CEUX

GENMAB A/S

28-Mar-25

11:13:21 AM

101

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:21 AM

101

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:22 AM

9

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:22 AM

92

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:22 AM

101

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:23 AM

3

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:23 AM

62

1381.00

XCSE

GENMAB A/S

28-Mar-25

11:13:32 AM

77

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:13:32 AM

80

1380.50

XCSE

GENMAB A/S

28-Mar-25

11:13:32 AM

34

1380.50

CEUX

GENMAB A/S

28-Mar-25

11:13:32 AM

33

1380.50

CEUX

GENMAB A/S

28-Mar-25

11:13:32 AM

8

1380.00

AQEU

149

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

11:13:43 AM

74

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:13:43 AM

20

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:13:43 AM

57

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:13:45 AM

22

1378.50

AQEU

GENMAB A/S

28-Mar-25

11:14:23 AM

10

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:14:23 AM

69

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:15:58 AM

20

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:16:00 AM

17

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:16:21 AM

1

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:16:21 AM

13

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:16:38 AM

16

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:16:51 AM

41

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:16:51 AM

11

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:16:51 AM

12

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:17:17 AM

75

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:18:20 AM

17

1377.50

AQEU

GENMAB A/S

28-Mar-25

11:18:26 AM

59

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:18:26 AM

30

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:18:26 AM

5

1377.50

AQEU

GENMAB A/S

28-Mar-25

11:18:45 AM

25

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:18:45 AM

3

1377.50

TQEX

GENMAB A/S

28-Mar-25

11:18:53 AM

53

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:18:53 AM

19

1377.50

TQEX

GENMAB A/S

28-Mar-25

11:19:04 AM

45

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:19:04 AM

15

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:20:00 AM

21

1376.50

TQEX

GENMAB A/S

28-Mar-25

11:20:01 AM

9

1377.00

XCSE

GENMAB A/S

28-Mar-25

11:20:01 AM

61

1377.00

XCSE

GENMAB A/S

28-Mar-25

11:21:14 AM

3

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:21:15 AM

18

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:21:15 AM

41

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:21:15 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:21:39 AM

25

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:21:39 AM

8

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:21:39 AM

38

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:23:33 AM

52

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:23:33 AM

49

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:23:33 AM

11

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:23:33 AM

20

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:23:52 AM

41

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:23:52 AM

13

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:23:52 AM

13

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:23:53 AM

11

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:23:53 AM

33

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:23:53 AM

26

1378.50

XCSE

150

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

11:24:37 AM

45

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:25:57 AM

35

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:25:57 AM

36

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:25:58 AM

1

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:26:42 AM

41

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:26:42 AM

41

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:26:42 AM

11

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:26:42 AM

31

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:28:06 AM

76

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:28:06 AM

41

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:28:06 AM

14

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:28:06 AM

66

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:28:06 AM

32

1378.50

TQEX

GENMAB A/S

28-Mar-25

11:28:06 AM

39

1378.50

AQEU

GENMAB A/S

28-Mar-25

11:28:47 AM

27

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:29:08 AM

34

1379.50

TQEX

GENMAB A/S

28-Mar-25

11:29:18 AM

36

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:30:28 AM

75

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:30:28 AM

28

1379.00

AQEU

GENMAB A/S

28-Mar-25

11:30:30 AM

41

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:30:30 AM

23

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:30:30 AM

1

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:31:58 AM

10

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:31:58 AM

7

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:31:58 AM

5

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:31:59 AM

1

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:31:59 AM

33

1378.50

TQEX

GENMAB A/S

28-Mar-25

11:32:00 AM

77

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:32:00 AM

5

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:32:00 AM

44

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:32:00 AM

30

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:32:00 AM

22

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:32:58 AM

26

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:32:58 AM

44

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:33:21 AM

14

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:33:22 AM

41

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:33:22 AM

11

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:33:27 AM

26

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:34:17 AM

52

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:34:46 AM

15

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:34:46 AM

25

1379.00

TQEX

GENMAB A/S

28-Mar-25

11:35:08 AM

68

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:35:08 AM

11

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:35:08 AM

32

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:35:10 AM

41

1379.00

XCSE

151

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

11:35:52 AM

11

1379.00

XCSE

GENMAB A/S

28-Mar-25

11:36:37 AM

24

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:36:37 AM

36

1379.00

CEUX

GENMAB A/S

28-Mar-25

11:36:47 AM

41

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:47 AM

31

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:47 AM

13

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:47 AM

12

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:47 AM

17

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:47 AM

12

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:47 AM

41

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:48 AM

27

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:48 AM

41

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:48 AM

30

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:48 AM

13

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:48 AM

41

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:48 AM

19

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:36:48 AM

11

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:37:21 AM

13

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:37:21 AM

37

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:37:55 AM

10

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:37:55 AM

12

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:37:55 AM

13

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:38:19 AM

9

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:38:19 AM

13

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:38:43 AM

12

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:38:43 AM

41

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:38:43 AM

31

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:38:50 AM

16

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:38:57 AM

34

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:39:03 AM

32

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:39:16 AM

32

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:40:12 AM

26

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:40:22 AM

44

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:40:22 AM

77

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:40:22 AM

50

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:40:22 AM

10

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:40:22 AM

69

1379.50

CEUX

GENMAB A/S

28-Mar-25

11:40:22 AM

39

1379.50

TQEX

GENMAB A/S

28-Mar-25

11:42:16 AM

5

1380.50

XCSE

GENMAB A/S

28-Mar-25

11:42:16 AM

80

1381.00

CEUX

GENMAB A/S

28-Mar-25

11:44:27 AM

18

1380.50

XCSE

GENMAB A/S

28-Mar-25

11:44:27 AM

73

1380.50

XCSE

GENMAB A/S

28-Mar-25

11:44:27 AM

22

1380.50

TQEX

GENMAB A/S

28-Mar-25

11:44:27 AM

22

1380.50

AQEU

GENMAB A/S

28-Mar-25

11:44:28 AM

43

1380.50

XCSE

152

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

11:44:38 AM

3

1380.50

CEUX

GENMAB A/S

28-Mar-25

11:44:38 AM

53

1380.50

CEUX

GENMAB A/S

28-Mar-25

11:45:05 AM

59

1380.00

CEUX

GENMAB A/S

28-Mar-25

11:45:05 AM

20

1380.00

CEUX

GENMAB A/S

28-Mar-25

11:45:37 AM

22

1380.00

XCSE

GENMAB A/S

28-Mar-25

11:45:37 AM

1

1380.00

XCSE

GENMAB A/S

28-Mar-25

11:46:46 AM

12

1380.00

AQEU

GENMAB A/S

28-Mar-25

11:47:13 AM

25

1380.00

AQEU

GENMAB A/S

28-Mar-25

11:47:21 AM

79

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:47:34 AM

24

1379.50

TQEX

GENMAB A/S

28-Mar-25

11:47:44 AM

23

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:47:44 AM

11

1379.50

XCSE

GENMAB A/S

28-Mar-25

11:47:55 AM

14

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:48:30 AM

14

1378.50

TQEX

GENMAB A/S

28-Mar-25

11:48:47 AM

58

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:49:57 AM

22

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:52:34 AM

21

1378.50

XCSE

GENMAB A/S

28-Mar-25

11:52:34 AM

28

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:52:35 AM

14

1378.50

CEUX

GENMAB A/S

28-Mar-25

11:52:35 AM

8

1378.50

TQEX

GENMAB A/S

28-Mar-25

11:54:27 AM

74

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:54:27 AM

36

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:54:27 AM

23

1377.50

TQEX

GENMAB A/S

28-Mar-25

11:54:28 AM

8

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:54:28 AM

31

1377.00

XCSE

GENMAB A/S

28-Mar-25

11:54:28 AM

36

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:54:29 AM

26

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:54:29 AM

43

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:54:29 AM

1

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:54:29 AM

53

1377.50

XCSE

GENMAB A/S

28-Mar-25

11:56:17 AM

12

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:56:17 AM

14

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:56:51 AM

16

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:56:51 AM

17

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:56:51 AM

12

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:56:51 AM

30

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:56:52 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:56:52 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:56:53 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:56:57 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:56:59 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:00 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:10 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:15 AM

37

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:15 AM

13

1378.00

XCSE

153

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

11:57:15 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:15 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:15 AM

37

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:15 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:15 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:15 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:16 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:16 AM

37

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:16 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:16 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:16 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:16 AM

37

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:16 AM

14

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:57:17 AM

37

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:17 AM

30

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:17 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:17 AM

37

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:17 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:17 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:18 AM

37

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:18 AM

13

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:18 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:18 AM

35

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:57:29 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:29 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:55 AM

31

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:55 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:56 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:56 AM

11

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:56 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:56 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:56 AM

12

1377.50

CEUX

GENMAB A/S

28-Mar-25

11:57:57 AM

12

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:57:59 AM

7

1378.00

XCSE

GENMAB A/S

28-Mar-25

11:59:40 AM

46

1377.00

XCSE

GENMAB A/S

28-Mar-25

11:59:40 AM

79

1378.00

CEUX

GENMAB A/S

28-Mar-25

11:59:46 AM

6

1378.00

CEUX

GENMAB A/S

28-Mar-25

12:02:27 PM

20

1377.50

CEUX

GENMAB A/S

28-Mar-25

12:02:28 PM

44

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:28 PM

1

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

14

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

41

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

10

1376.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

13

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

15

1376.50

XCSE

154

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

12:02:46 PM

9

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

13

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

12

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

9

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

79

1376.00

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

41

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

4

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

30

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

16

1377.50

XCSE

GENMAB A/S

28-Mar-25

12:02:46 PM

36

1377.50

CEUX

GENMAB A/S

28-Mar-25

12:02:46 PM

20

1377.00

CEUX

GENMAB A/S

28-Mar-25

12:02:46 PM

44

1376.50

CEUX

GENMAB A/S

28-Mar-25

12:02:46 PM

34

1376.50

CEUX

GENMAB A/S

28-Mar-25

12:02:46 PM

5

1377.00

CEUX

GENMAB A/S

28-Mar-25

12:02:46 PM

5

1377.00

CEUX

GENMAB A/S

28-Mar-25

12:02:46 PM

11

1376.50

TQEX

GENMAB A/S

28-Mar-25

12:02:46 PM

15

1376.50

TQEX

GENMAB A/S

28-Mar-25

12:02:47 PM

18

1376.00

XCSE

GENMAB A/S

28-Mar-25

12:02:47 PM

19

1375.50

CEUX

GENMAB A/S

28-Mar-25

12:02:55 PM

33

1375.50

CEUX

GENMAB A/S

28-Mar-25

12:02:55 PM

22

1375.50

CEUX

GENMAB A/S

28-Mar-25

12:03:35 PM

41

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:03:35 PM

78

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:03:35 PM

15

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:03:35 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:03:35 PM

28

1375.00

TQEX

GENMAB A/S

28-Mar-25

12:03:37 PM

23

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:03:37 PM

54

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:03:38 PM

35

1374.50

XCSE

GENMAB A/S

28-Mar-25

12:03:38 PM

33

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:03:38 PM

43

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:03:38 PM

44

1374.50

XCSE

GENMAB A/S

28-Mar-25

12:03:38 PM

27

1374.00

TQEX

GENMAB A/S

28-Mar-25

12:06:43 PM

77

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:08:25 PM

23

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:09:07 PM

55

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:09:13 PM

30

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:09:13 PM

29

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:09:37 PM

50

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:10:46 PM

10

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:10:46 PM

20

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:10:46 PM

34

1375.00

CEUX

GENMAB A/S

28-Mar-25

12:11:17 PM

14

1375.00

CEUX

GENMAB A/S

28-Mar-25

12:11:45 PM

29

1375.00

CEUX

GENMAB A/S

28-Mar-25

12:11:58 PM

32

1375.00

TQEX

155

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

12:12:10 PM

2

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:10 PM

25

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:10 PM

41

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:10 PM

8

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:10 PM

3

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:10 PM

30

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:12 PM

4

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:12 PM

13

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:47 PM

23

1374.50

AQEU

GENMAB A/S

28-Mar-25

12:12:48 PM

32

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:48 PM

11

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:48 PM

39

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:48 PM

11

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:48 PM

15

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:12:49 PM

13

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:49 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:49 PM

41

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:49 PM

11

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:49 PM

13

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:49 PM

32

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:50 PM

11

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:50 PM

10

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:50 PM

13

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:50 PM

13

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:50 PM

13

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:51 PM

5

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:51 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:12:51 PM

28

1375.00

XCSE

GENMAB A/S

28-Mar-25

12:13:03 PM

16

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:13:03 PM

58

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:13:03 PM

75

1373.50

XCSE

GENMAB A/S

28-Mar-25

12:13:03 PM

61

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:13:03 PM

10

1372.00

CEUX

GENMAB A/S

28-Mar-25

12:13:03 PM

70

1372.00

CEUX

GENMAB A/S

28-Mar-25

12:13:03 PM

79

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:13:03 PM

27

1372.50

TQEX

GENMAB A/S

28-Mar-25

12:13:03 PM

3

1372.50

TQEX

GENMAB A/S

28-Mar-25

12:13:03 PM

22

1373.50

TQEX

GENMAB A/S

28-Mar-25

12:13:03 PM

23

1373.50

AQEU

GENMAB A/S

28-Mar-25

12:13:03 PM

18

1372.00

AQEU

GENMAB A/S

28-Mar-25

12:13:03 PM

4

1372.00

AQEU

GENMAB A/S

28-Mar-25

12:13:04 PM

15

1371.50

XCSE

GENMAB A/S

28-Mar-25

12:13:04 PM

18

1371.50

XCSE

GENMAB A/S

28-Mar-25

12:13:18 PM

44

1371.50

XCSE

GENMAB A/S

28-Mar-25

12:13:18 PM

24

1371.50

TQEX

156

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

12:14:23 PM

3

1371.50

TQEX

GENMAB A/S

28-Mar-25

12:18:22 PM

44

1371.50

CEUX

GENMAB A/S

28-Mar-25

12:18:47 PM

5

1371.50

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

11

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

12

1371.50

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

30

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

30

1371.50

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

35

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

12

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

24

1371.50

XCSE

GENMAB A/S

28-Mar-25

12:18:47 PM

43

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:18:48 PM

74

1370.50

XCSE

GENMAB A/S

28-Mar-25

12:18:48 PM

74

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:18:48 PM

6

1369.00

CEUX

GENMAB A/S

28-Mar-25

12:18:48 PM

77

1370.50

CEUX

GENMAB A/S

28-Mar-25

12:18:48 PM

55

1369.00

CEUX

GENMAB A/S

28-Mar-25

12:18:48 PM

31

1370.50

TQEX

GENMAB A/S

28-Mar-25

12:19:10 PM

8

1368.50

XCSE

GENMAB A/S

28-Mar-25

12:19:10 PM

60

1368.50

XCSE

GENMAB A/S

28-Mar-25

12:20:42 PM

75

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:24:21 PM

53

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:24:21 PM

1

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:24:21 PM

6

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:24:21 PM

9

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:25:21 PM

11

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:25:21 PM

19

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:25:21 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:26:10 PM

11

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:26:10 PM

22

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:26:57 PM

42

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:32:27 PM

1

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:32:27 PM

53

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:32:27 PM

16

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:32:27 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:32:28 PM

11

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:32:39 PM

12

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:32:39 PM

48

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:32:39 PM

39

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:32:53 PM

12

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:32:53 PM

46

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:32:53 PM

43

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:34:17 PM

32

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:34:17 PM

77

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:34:17 PM

14

1372.50

TQEX

GENMAB A/S

28-Mar-25

12:34:17 PM

25

1372.50

TQEX

157

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

12:34:44 PM

15

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:34:44 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

42

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

22

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

30

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

50

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

32

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

30

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

21

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

16

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:35:33 PM

4

1372.00

AQEU

GENMAB A/S

28-Mar-25

12:35:34 PM

2

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:34 PM

8

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:34 PM

12

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:34 PM

11

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:34 PM

1

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:35 PM

12

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:35 PM

11

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:35 PM

30

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:35 PM

30

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:36 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:36 PM

2

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:35:36 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:36 PM

37

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:35:36 PM

30

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:36:27 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:36:27 PM

42

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:36:27 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:36:27 PM

32

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:37:11 PM

11

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:37:11 PM

11

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:37:11 PM

32

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:38:00 PM

2

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:38:24 PM

96

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:38:28 PM

4

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:38:28 PM

59

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:38:32 PM

10

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:39:21 PM

74

1372.50

XCSE

GENMAB A/S

28-Mar-25

12:39:21 PM

1

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:41:44 PM

25

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:41:44 PM

5

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:41:44 PM

70

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:41:44 PM

44

1374.50

TQEX

GENMAB A/S

28-Mar-25

12:41:44 PM

22

1374.50

AQEU

GENMAB A/S

28-Mar-25

12:41:45 PM

1

1374.50

XCSE

158

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

12:41:45 PM

1

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:42:28 PM

36

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:43:00 PM

10

1374.50

CEUX

GENMAB A/S

28-Mar-25

12:45:47 PM

78

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:48:15 PM

1

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:48:15 PM

36

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:48:17 PM

6

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:48:28 PM

5

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:48:35 PM

10

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:48:37 PM

35

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:48:37 PM

25

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:48:37 PM

10

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:48:37 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:48:37 PM

3

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:48:38 PM

1

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:50:00 PM

10

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:50:30 PM

5

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:50:30 PM

5

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:50:43 PM

1

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:00 PM

10

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:18 PM

6

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:18 PM

6

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:18 PM

5

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:45 PM

6

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:45 PM

6

1373.50

CEUX

GENMAB A/S

28-Mar-25

12:51:45 PM

6

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:45 PM

6

1374.00

CEUX

GENMAB A/S

28-Mar-25

12:51:52 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:52 PM

41

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:52 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:53 PM

12

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:53 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:54 PM

7

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:54 PM

12

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:54 PM

12

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:55 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:55 PM

10

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:55 PM

30

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:55 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:56 PM

30

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:56 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:56 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:59 PM

74

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:51:59 PM

16

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:59 PM

30

1374.00

XCSE

159

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

12:51:59 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:59 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

12:51:59 PM

70

1373.50

CEUX

GENMAB A/S

28-Mar-25

12:51:59 PM

35

1373.50

CEUX

GENMAB A/S

28-Mar-25

12:51:59 PM

36

1373.50

CEUX

GENMAB A/S

28-Mar-25

12:51:59 PM

30

1373.50

CEUX

GENMAB A/S

28-Mar-25

12:51:59 PM

45

1373.50

TQEX

GENMAB A/S

28-Mar-25

12:51:59 PM

25

1373.00

AQEU

GENMAB A/S

28-Mar-25

12:52:00 PM

49

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:52:00 PM

11

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:52:00 PM

36

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:52:00 PM

6

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:52:00 PM

6

1373.00

CEUX

GENMAB A/S

28-Mar-25

12:52:00 PM

34

1373.50

CEUX

GENMAB A/S

28-Mar-25

12:52:02 PM

3

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:52:02 PM

42

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:52:04 PM

2

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:52:04 PM

30

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:52:04 PM

42

1373.00

XCSE

GENMAB A/S

28-Mar-25

12:52:14 PM

77

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:52:14 PM

101

1372.00

XCSE

GENMAB A/S

28-Mar-25

12:52:14 PM

79

1372.50

CEUX

GENMAB A/S

28-Mar-25

12:52:14 PM

37

1372.50

TQEX

GENMAB A/S

28-Mar-25

12:52:14 PM

19

1372.00

AQEU

GENMAB A/S

28-Mar-25

12:52:33 PM

76

1370.50

XCSE

GENMAB A/S

28-Mar-25

12:52:33 PM

45

1371.00

CEUX

GENMAB A/S

28-Mar-25

12:52:33 PM

34

1371.00

CEUX

GENMAB A/S

28-Mar-25

12:52:33 PM

32

1371.00

TQEX

GENMAB A/S

28-Mar-25

12:52:36 PM

79

1370.00

CEUX

GENMAB A/S

28-Mar-25

12:52:36 PM

42

1370.00

TQEX

GENMAB A/S

28-Mar-25

12:52:36 PM

28

1370.00

AQEU

GENMAB A/S

28-Mar-25

12:52:38 PM

46

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:52:38 PM

30

1369.50

XCSE

GENMAB A/S

28-Mar-25

12:54:59 PM

34

1370.00

CEUX

GENMAB A/S

28-Mar-25

12:54:59 PM

26

1370.00

CEUX

GENMAB A/S

28-Mar-25

12:55:00 PM

30

1370.00

XCSE

GENMAB A/S

28-Mar-25

12:55:00 PM

8

1370.00

XCSE

GENMAB A/S

28-Mar-25

12:55:00 PM

9

1370.00

XCSE

GENMAB A/S

28-Mar-25

12:55:00 PM

3

1370.00

CEUX

GENMAB A/S

28-Mar-25

12:55:00 PM

15

1370.00

CEUX

GENMAB A/S

28-Mar-25

12:55:00 PM

16

1370.00

TQEX

GENMAB A/S

28-Mar-25

12:57:17 PM

79

1370.00

XCSE

GENMAB A/S

28-Mar-25

12:57:17 PM

1

1370.00

XCSE

GENMAB A/S

28-Mar-25

12:57:17 PM

9

1370.00

XCSE

GENMAB A/S

28-Mar-25

12:57:17 PM

42

1370.00

XCSE

160

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

12:57:17 PM

10

1370.00

TQEX

GENMAB A/S

28-Mar-25

12:57:45 PM

26

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:57:45 PM

10

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:57:46 PM

11

1371.00

XCSE

GENMAB A/S

28-Mar-25

12:57:48 PM

58

1371.00

XCSE

GENMAB A/S

28-Mar-25

1:00:07 PM

78

1370.00

CEUX

GENMAB A/S

28-Mar-25

1:01:17 PM

72

1369.50

XCSE

GENMAB A/S

28-Mar-25

1:02:46 PM

42

1369.50

XCSE

GENMAB A/S

28-Mar-25

1:02:46 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

1:02:46 PM

4

1369.50

XCSE

GENMAB A/S

28-Mar-25

1:02:46 PM

44

1369.50

XCSE

GENMAB A/S

28-Mar-25

1:02:46 PM

35

1369.50

AQEU

GENMAB A/S

28-Mar-25

1:05:17 PM

12

1369.50

CEUX

GENMAB A/S

28-Mar-25

1:05:18 PM

33

1369.50

CEUX

GENMAB A/S

28-Mar-25

1:05:18 PM

38

1369.50

CEUX

GENMAB A/S

28-Mar-25

1:05:29 PM

6

1369.00

CEUX

GENMAB A/S

28-Mar-25

1:05:43 PM

32

1369.00

CEUX

GENMAB A/S

28-Mar-25

1:06:13 PM

32

1369.00

CEUX

GENMAB A/S

28-Mar-25

1:06:35 PM

11

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:06:35 PM

42

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:06:35 PM

5

1369.00

CEUX

GENMAB A/S

28-Mar-25

1:06:35 PM

16

1369.00

TQEX

GENMAB A/S

28-Mar-25

1:06:35 PM

6

1369.00

TQEX

GENMAB A/S

28-Mar-25

1:06:36 PM

15

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:06:36 PM

19

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:06:36 PM

42

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

9

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

12

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

25

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

32

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

42

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

16

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

11

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

7

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

6

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

6

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

78

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

11

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

42

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

18

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:16 PM

3

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:37 PM

32

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:07:38 PM

33

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:38 PM

4

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:51 PM

12

1369.00

XCSE

161

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

1:07:51 PM

13

1369.00

XCSE

GENMAB A/S

28-Mar-25

1:07:54 PM

4

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:08:21 PM

42

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:08:21 PM

43

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:08:21 PM

13

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:08:21 PM

1

1368.50

XCSE

GENMAB A/S

28-Mar-25

1:08:38 PM

32

1368.50

CEUX

GENMAB A/S

28-Mar-25

1:08:57 PM

14

1368.00

TQEX

GENMAB A/S

28-Mar-25

1:08:57 PM

13

1368.00

TQEX

GENMAB A/S

28-Mar-25

1:09:28 PM

28

1368.00

CEUX

GENMAB A/S

28-Mar-25

1:09:28 PM

12

1368.00

CEUX

GENMAB A/S

28-Mar-25

1:09:28 PM

32

1368.00

CEUX

GENMAB A/S

28-Mar-25

1:09:28 PM

30

1368.00

CEUX

GENMAB A/S

28-Mar-25

1:11:19 PM

77

1367.50

XCSE

GENMAB A/S

28-Mar-25

1:11:19 PM

24

1367.50

XCSE

GENMAB A/S

28-Mar-25

1:11:19 PM

79

1367.50

CEUX

GENMAB A/S

28-Mar-25

1:14:17 PM

60

1367.00

XCSE

GENMAB A/S

28-Mar-25

1:14:17 PM

41

1367.00

XCSE

GENMAB A/S

28-Mar-25

1:14:17 PM

25

1367.00

TQEX

GENMAB A/S

28-Mar-25

1:16:27 PM

74

1367.00

XCSE

GENMAB A/S

28-Mar-25

1:16:28 PM

15

1367.00

XCSE

GENMAB A/S

28-Mar-25

1:16:28 PM

1

1367.00

XCSE

GENMAB A/S

28-Mar-25

1:16:28 PM

48

1367.00

XCSE

GENMAB A/S

28-Mar-25

1:16:28 PM

35

1366.50

CEUX

GENMAB A/S

28-Mar-25

1:16:31 PM

9

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:16:31 PM

48

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:16:31 PM

44

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:16:31 PM

79

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:16:31 PM

42

1366.50

CEUX

GENMAB A/S

28-Mar-25

1:16:58 PM

10

1368.00

CEUX

GENMAB A/S

28-Mar-25

1:17:18 PM

9

1368.00

XCSE

GENMAB A/S

28-Mar-25

1:17:18 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

1:17:18 PM

32

1368.00

CEUX

GENMAB A/S

28-Mar-25

1:17:39 PM

10

1368.00

XCSE

GENMAB A/S

28-Mar-25

1:17:39 PM

32

1368.00

XCSE

GENMAB A/S

28-Mar-25

1:17:39 PM

45

1367.50

XCSE

GENMAB A/S

28-Mar-25

1:17:39 PM

79

1368.00

XCSE

GENMAB A/S

28-Mar-25

1:17:39 PM

14

1367.50

XCSE

GENMAB A/S

28-Mar-25

1:17:39 PM

78

1367.50

CEUX

GENMAB A/S

28-Mar-25

1:17:39 PM

30

1367.50

TQEX

GENMAB A/S

28-Mar-25

1:17:40 PM

77

1367.00

XCSE

GENMAB A/S

28-Mar-25

1:17:41 PM

9

1366.50

CEUX

GENMAB A/S

28-Mar-25

1:18:47 PM

69

1366.50

CEUX

GENMAB A/S

28-Mar-25

1:18:47 PM

29

1366.50

TQEX

GENMAB A/S

28-Mar-25

1:20:10 PM

54

1366.50

CEUX

162

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

1:20:10 PM

22

1366.50

CEUX

GENMAB A/S

28-Mar-25

1:20:10 PM

22

1366.50

TQEX

GENMAB A/S

28-Mar-25

1:20:11 PM

75

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:20:11 PM

76

1365.50

CEUX

GENMAB A/S

28-Mar-25

1:20:11 PM

25

1366.00

AQEU

GENMAB A/S

28-Mar-25

1:20:13 PM

22

1365.00

AQEU

GENMAB A/S

28-Mar-25

1:23:39 PM

48

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:23:39 PM

30

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:23:39 PM

1

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:23:45 PM

8

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:24:35 PM

78

1365.00

CEUX

GENMAB A/S

28-Mar-25

1:24:35 PM

28

1365.00

TQEX

GENMAB A/S

28-Mar-25

1:24:40 PM

18

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:24:40 PM

25

1365.00

AQEU

GENMAB A/S

28-Mar-25

1:24:41 PM

20

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:24:42 PM

13

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:24:42 PM

48

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:25:08 PM

48

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:25:08 PM

1

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:25:08 PM

12

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:25:08 PM

13

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:25:19 PM

79

1364.50

XCSE

GENMAB A/S

28-Mar-25

1:26:26 PM

13

1364.50

XCSE

GENMAB A/S

28-Mar-25

1:26:26 PM

9

1364.50

XCSE

GENMAB A/S

28-Mar-25

1:26:31 PM

31

1364.50

XCSE

GENMAB A/S

28-Mar-25

1:26:51 PM

1

1364.50

XCSE

GENMAB A/S

28-Mar-25

1:26:51 PM

4

1364.50

XCSE

GENMAB A/S

28-Mar-25

1:27:46 PM

20

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:27:46 PM

34

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:27:46 PM

11

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:27:46 PM

24

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:27:46 PM

12

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:27:50 PM

31

1364.00

CEUX

GENMAB A/S

28-Mar-25

1:27:50 PM

43

1364.00

CEUX

GENMAB A/S

28-Mar-25

1:27:52 PM

20

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:28:43 PM

34

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:28:43 PM

18

1363.50

TQEX

GENMAB A/S

28-Mar-25

1:28:43 PM

4

1363.50

TQEX

GENMAB A/S

28-Mar-25

1:30:26 PM

11

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:30:26 PM

1

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:30:27 PM

25

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:30:27 PM

46

1363.00

CEUX

GENMAB A/S

28-Mar-25

1:30:27 PM

32

1363.00

CEUX

GENMAB A/S

28-Mar-25

1:30:29 PM

1

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:30:37 PM

5

1362.50

XCSE

163

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

1:30:37 PM

45

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:30:37 PM

23

1362.00

TQEX

GENMAB A/S

28-Mar-25

1:30:37 PM

1

1362.00

TQEX

GENMAB A/S

28-Mar-25

1:30:53 PM

12

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:30:54 PM

11

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:32:14 PM

27

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:32:19 PM

32

1363.00

TQEX

GENMAB A/S

28-Mar-25

1:32:25 PM

83

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:32:25 PM

48

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:32:26 PM

13

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:34:03 PM

12

1362.00

XCSE

GENMAB A/S

28-Mar-25

1:34:03 PM

47

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:34:03 PM

41

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:34:03 PM

48

1362.00

XCSE

GENMAB A/S

28-Mar-25

1:34:03 PM

11

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:34:03 PM

75

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:34:03 PM

12

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:34:31 PM

9

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:34:31 PM

13

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:34:41 PM

13

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:34:41 PM

12

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:34:41 PM

8

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:35:28 PM

14

1362.00

CEUX

GENMAB A/S

28-Mar-25

1:37:08 PM

13

1361.50

XCSE

GENMAB A/S

28-Mar-25

1:37:08 PM

48

1361.50

XCSE

GENMAB A/S

28-Mar-25

1:37:08 PM

76

1361.50

XCSE

GENMAB A/S

28-Mar-25

1:37:08 PM

11

1361.50

XCSE

GENMAB A/S

28-Mar-25

1:37:08 PM

18

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:37:08 PM

34

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:37:08 PM

24

1360.50

TQEX

GENMAB A/S

28-Mar-25

1:37:09 PM

12

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:37:23 PM

13

1361.50

XCSE

GENMAB A/S

28-Mar-25

1:37:23 PM

11

1361.50

XCSE

GENMAB A/S

28-Mar-25

1:37:23 PM

11

1361.50

XCSE

GENMAB A/S

28-Mar-25

1:37:23 PM

30

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:37:23 PM

32

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:37:46 PM

65

1362.00

XCSE

GENMAB A/S

28-Mar-25

1:37:46 PM

12

1362.00

XCSE

GENMAB A/S

28-Mar-25

1:37:46 PM

14

1362.00

AQEU

GENMAB A/S

28-Mar-25

1:37:46 PM

8

1362.00

AQEU

GENMAB A/S

28-Mar-25

1:38:53 PM

79

1362.00

XCSE

GENMAB A/S

28-Mar-25

1:38:53 PM

32

1361.00

XCSE

GENMAB A/S

28-Mar-25

1:38:53 PM

47

1361.00

XCSE

GENMAB A/S

28-Mar-25

1:38:53 PM

80

1361.50

CEUX

GENMAB A/S

28-Mar-25

1:38:53 PM

22

1362.00

TQEX

164

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

1:38:53 PM

23

1361.00

AQEU

GENMAB A/S

28-Mar-25

1:38:53 PM

28

1362.00

AQEU

GENMAB A/S

28-Mar-25

1:40:54 PM

12

1361.00

XCSE

GENMAB A/S

28-Mar-25

1:40:54 PM

36

1361.00

XCSE

GENMAB A/S

28-Mar-25

1:40:54 PM

13

1361.00

XCSE

GENMAB A/S

28-Mar-25

1:40:54 PM

1

1361.00

XCSE

GENMAB A/S

28-Mar-25

1:40:54 PM

39

1361.00

XCSE

GENMAB A/S

28-Mar-25

1:42:37 PM

23

1362.50

AQEU

GENMAB A/S

28-Mar-25

1:43:00 PM

34

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:00 PM

44

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:00 PM

25

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:43:00 PM

12

1362.50

TQEX

GENMAB A/S

28-Mar-25

1:43:25 PM

29

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:43:26 PM

13

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:26 PM

43

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:26 PM

7

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:26 PM

16

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:26 PM

10

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:43:26 PM

22

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:43:38 PM

26

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:43:41 PM

12

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:41 PM

43

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:43:41 PM

6

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:44:18 PM

3

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:44:18 PM

12

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:44:18 PM

2

1362.50

CEUX

GENMAB A/S

28-Mar-25

1:44:25 PM

1

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:44:25 PM

2

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:44:25 PM

1

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:44:45 PM

12

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:44:45 PM

8

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:44:51 PM

10

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:45:26 PM

5

1363.00

XCSE

GENMAB A/S

28-Mar-25

1:46:05 PM

31

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:05 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:05 PM

13

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:05 PM

2

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:05 PM

9

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:06 PM

14

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:06 PM

8

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:06 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:06 PM

1

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:06 PM

1

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:21 PM

11

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:21 PM

11

1363.50

XCSE

165

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

1:46:41 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:41 PM

9

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:41 PM

13

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:46:53 PM

25

1362.50

XCSE

GENMAB A/S

28-Mar-25

1:47:16 PM

5

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:16 PM

11

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:16 PM

24

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:16 PM

6

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:16 PM

17

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:17 PM

22

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:17 PM

17

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:17 PM

8

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:21 PM

5

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:47:21 PM

41

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:47:38 PM

1

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:47:38 PM

23

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:48:25 PM

7

1363.50

XCSE

GENMAB A/S

28-Mar-25

1:48:25 PM

10

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:49:25 PM

25

1363.50

CEUX

GENMAB A/S

28-Mar-25

1:50:09 PM

34

1365.00

CEUX

GENMAB A/S

28-Mar-25

1:50:09 PM

15

1365.00

CEUX

GENMAB A/S

28-Mar-25

1:50:09 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

1:50:09 PM

23

1365.00

CEUX

GENMAB A/S

28-Mar-25

1:50:09 PM

13

1365.00

TQEX

GENMAB A/S

28-Mar-25

1:53:11 PM

34

1365.50

CEUX

GENMAB A/S

28-Mar-25

1:53:11 PM

1

1365.50

AQEU

GENMAB A/S

28-Mar-25

1:53:11 PM

21

1365.50

AQEU

GENMAB A/S

28-Mar-25

1:53:33 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:53:33 PM

15

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:53:33 PM

9

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:53:33 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:53:34 PM

7

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:00 PM

33

1366.00

TQEX

GENMAB A/S

28-Mar-25

1:54:12 PM

43

1365.50

CEUX

GENMAB A/S

28-Mar-25

1:54:14 PM

17

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:14 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:14 PM

36

1366.00

CEUX

GENMAB A/S

28-Mar-25

1:54:14 PM

6

1366.00

CEUX

GENMAB A/S

28-Mar-25

1:54:14 PM

80

1366.00

CEUX

GENMAB A/S

28-Mar-25

1:54:15 PM

36

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:15 PM

14

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:26 PM

41

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:26 PM

23

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:26 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:26 PM

10

1366.00

XCSE

166

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

1:54:27 PM

26

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:54:27 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:55:00 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

1:55:00 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

1:55:00 PM

1

1366.50

XCSE

GENMAB A/S

28-Mar-25

1:55:00 PM

3

1366.50

XCSE

GENMAB A/S

28-Mar-25

1:55:00 PM

53

1366.50

XCSE

GENMAB A/S

28-Mar-25

1:55:00 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

1:55:00 PM

42

1366.50

XCSE

GENMAB A/S

28-Mar-25

1:55:19 PM

36

1366.00

CEUX

GENMAB A/S

28-Mar-25

1:55:31 PM

19

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:55:31 PM

44

1366.00

XCSE

GENMAB A/S

28-Mar-25

1:55:31 PM

24

1365.50

XCSE

GENMAB A/S

28-Mar-25

1:55:31 PM

51

1365.50

XCSE

GENMAB A/S

28-Mar-25

1:55:31 PM

43

1366.00

CEUX

GENMAB A/S

28-Mar-25

1:55:31 PM

79

1366.00

CEUX

GENMAB A/S

28-Mar-25

1:55:31 PM

3

1366.00

TQEX

GENMAB A/S

28-Mar-25

1:55:31 PM

33

1366.00

TQEX

GENMAB A/S

28-Mar-25

1:55:31 PM

29

1366.00

TQEX

GENMAB A/S

28-Mar-25

1:56:57 PM

36

1365.50

XCSE

GENMAB A/S

28-Mar-25

1:56:57 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

1:56:57 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

1:56:57 PM

5

1365.50

AQEU

GENMAB A/S

28-Mar-25

1:56:58 PM

100

1365.50

XCSE

GENMAB A/S

28-Mar-25

1:56:58 PM

14

1365.50

XCSE

GENMAB A/S

28-Mar-25

1:57:19 PM

80

1365.00

CEUX

GENMAB A/S

28-Mar-25

1:57:41 PM

8

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:57:41 PM

41

1365.00

XCSE

GENMAB A/S

28-Mar-25

1:58:46 PM

76

1364.50

XCSE

GENMAB A/S

28-Mar-25

1:58:46 PM

23

1365.00

TQEX

GENMAB A/S

28-Mar-25

1:58:46 PM

6

1364.50

AQEU

GENMAB A/S

28-Mar-25

1:58:48 PM

21

1365.50

AQEU

GENMAB A/S

28-Mar-25

2:00:55 PM

42

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:00:55 PM

1

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:00:55 PM

18

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:00:55 PM

30

1367.50

AQEU

GENMAB A/S

28-Mar-25

2:01:28 PM

40

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:01:28 PM

53

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:01:28 PM

8

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:01:45 PM

25

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:02:05 PM

42

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:02:05 PM

13

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:02:05 PM

30

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:02:36 PM

74

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:03:08 PM

11

1367.00

CEUX

167

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:03:08 PM

1

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:03:28 PM

10

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:03:28 PM

12

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:04:25 PM

32

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:04:35 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:04:35 PM

20

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:04:35 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:04:45 PM

20

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:04:45 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:04:45 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:04:45 PM

78

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:04:45 PM

27

1366.50

TQEX

GENMAB A/S

28-Mar-25

2:05:12 PM

30

1366.50

AQEU

GENMAB A/S

28-Mar-25

2:05:21 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:05:21 PM

31

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:05:51 PM

23

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:05:51 PM

1

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:05:51 PM

10

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:05:51 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:05:51 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:06:41 PM

75

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:06:41 PM

34

1365.00

XCSE

GENMAB A/S

28-Mar-25

2:06:41 PM

78

1365.00

XCSE

GENMAB A/S

28-Mar-25

2:06:41 PM

74

1365.50

CEUX

GENMAB A/S

28-Mar-25

2:06:41 PM

20

1364.00

CEUX

GENMAB A/S

28-Mar-25

2:06:41 PM

14

1364.00

CEUX

GENMAB A/S

28-Mar-25

2:06:41 PM

24

1365.50

TQEX

GENMAB A/S

28-Mar-25

2:06:41 PM

2

1365.00

TQEX

GENMAB A/S

28-Mar-25

2:06:41 PM

23

1365.00

AQEU

GENMAB A/S

28-Mar-25

2:06:41 PM

2

1364.00

AQEU

GENMAB A/S

28-Mar-25

2:06:41 PM

2

1366.50

AQEU

GENMAB A/S

28-Mar-25

2:06:41 PM

23

1365.50

AQEU

GENMAB A/S

28-Mar-25

2:06:41 PM

29

1364.00

AQEU

GENMAB A/S

28-Mar-25

2:07:46 PM

4

1364.00

CEUX

GENMAB A/S

28-Mar-25

2:08:37 PM

34

1366.00

CEUX

GENMAB A/S

28-Mar-25

2:08:37 PM

43

1366.00

CEUX

GENMAB A/S

28-Mar-25

2:09:47 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:09:47 PM

22

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:09:47 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:04 PM

72

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:11:04 PM

4

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:11:04 PM

29

1366.50

TQEX

GENMAB A/S

28-Mar-25

2:11:04 PM

29

1366.50

AQEU

GENMAB A/S

28-Mar-25

2:11:05 PM

44

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:11:31 PM

23

1367.00

XCSE

168

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:11:31 PM

1

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:31 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:31 PM

14

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:31 PM

24

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:32 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:32 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:32 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:32 PM

24

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:11:32 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:12:11 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:12:11 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:13:25 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:13:25 PM

32

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:13:58 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:13:58 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:13:58 PM

42

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:13:58 PM

2

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:13:58 PM

26

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:13:58 PM

75

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:13:58 PM

80

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:13:58 PM

23

1366.50

TQEX

GENMAB A/S

28-Mar-25

2:13:58 PM

29

1366.50

AQEU

GENMAB A/S

28-Mar-25

2:14:13 PM

20

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:14:13 PM

43

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:14:51 PM

47

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:15:25 PM

21

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:15:25 PM

1

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:15:41 PM

43

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:15:41 PM

6

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:15:41 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:16:00 PM

21

1366.00

CEUX

GENMAB A/S

28-Mar-25

2:16:00 PM

55

1366.00

CEUX

GENMAB A/S

28-Mar-25

2:16:25 PM

3

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:16:26 PM

14

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:16:47 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:16:47 PM

11

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:16:47 PM

11

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:17:01 PM

74

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:17:04 PM

22

1366.50

TQEX

GENMAB A/S

28-Mar-25

2:17:28 PM

9

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:17:28 PM

56

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:17:28 PM

36

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:17:50 PM

26

1366.00

CEUX

GENMAB A/S

28-Mar-25

2:17:50 PM

52

1366.00

CEUX

GENMAB A/S

28-Mar-25

2:18:25 PM

11

1366.00

XCSE

169

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:18:25 PM

24

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:18:25 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:18:27 PM

37

1365.00

XCSE

GENMAB A/S

28-Mar-25

2:18:27 PM

20

1364.50

XCSE

GENMAB A/S

28-Mar-25

2:18:27 PM

79

1365.50

XCSE

GENMAB A/S

28-Mar-25

2:18:27 PM

65

1365.00

CEUX

GENMAB A/S

28-Mar-25

2:18:27 PM

14

1365.00

CEUX

GENMAB A/S

28-Mar-25

2:18:27 PM

30

1365.00

TQEX

GENMAB A/S

28-Mar-25

2:18:27 PM

22

1365.50

AQEU

GENMAB A/S

28-Mar-25

2:18:37 PM

44

1364.50

XCSE

GENMAB A/S

28-Mar-25

2:18:37 PM

10

1364.50

XCSE

GENMAB A/S

28-Mar-25

2:18:37 PM

27

1364.50

AQEU

GENMAB A/S

28-Mar-25

2:18:39 PM

34

1364.00

CEUX

GENMAB A/S

28-Mar-25

2:19:09 PM

6

1364.00

CEUX

GENMAB A/S

28-Mar-25

2:19:16 PM

76

1363.50

XCSE

GENMAB A/S

28-Mar-25

2:19:16 PM

22

1363.50

TQEX

GENMAB A/S

28-Mar-25

2:22:27 PM

74

1365.50

XCSE

GENMAB A/S

28-Mar-25

2:23:25 PM

46

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:23:25 PM

34

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:23:43 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:23:43 PM

67

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:23:43 PM

78

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:23:43 PM

31

1367.00

TQEX

GENMAB A/S

28-Mar-25

2:23:43 PM

17

1367.00

AQEU

GENMAB A/S

28-Mar-25

2:23:43 PM

3

1367.00

AQEU

GENMAB A/S

28-Mar-25

2:23:43 PM

7

1367.00

AQEU

GENMAB A/S

28-Mar-25

2:24:00 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:24:30 PM

14

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:24:30 PM

30

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:24:30 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:25:26 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:25:48 PM

12

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:25:48 PM

10

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:25:48 PM

5

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:25:48 PM

29

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:26:17 PM

79

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:26:23 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:26:23 PM

14

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:27:50 PM

32

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:27:50 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:27:50 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:27:50 PM

5

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:27:50 PM

29

1367.50

CEUX

GENMAB A/S

28-Mar-25

2:27:50 PM

37

1367.50

CEUX

GENMAB A/S

28-Mar-25

2:27:50 PM

30

1367.50

CEUX

170

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:27:50 PM

41

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:27:50 PM

5

1367.50

CEUX

GENMAB A/S

28-Mar-25

2:27:50 PM

34

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:27:50 PM

22

1367.00

TQEX

GENMAB A/S

28-Mar-25

2:27:50 PM

22

1367.00

AQEU

GENMAB A/S

28-Mar-25

2:28:25 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:25 PM

76

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:25 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:28:25 PM

42

1366.50

XCSE

GENMAB A/S

28-Mar-25

2:28:25 PM

10

1366.00

AQEU

GENMAB A/S

28-Mar-25

2:28:41 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:41 PM

29

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:41 PM

30

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:41 PM

25

1366.00

TQEX

GENMAB A/S

28-Mar-25

2:28:41 PM

14

1366.00

AQEU

GENMAB A/S

28-Mar-25

2:28:44 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:44 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:44 PM

21

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:44 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:28:48 PM

32

1366.00

CEUX

GENMAB A/S

28-Mar-25

2:29:05 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:29:05 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

2:30:00 PM

10

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:30:00 PM

7

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:30:00 PM

42

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:30:00 PM

26

1367.00

XCSE

GENMAB A/S

28-Mar-25

2:30:00 PM

16

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:30:00 PM

10

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:30:00 PM

30

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:30:00 PM

34

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:30:00 PM

5

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:30:00 PM

11

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:30:00 PM

2

1366.50

CEUX

GENMAB A/S

28-Mar-25

2:30:00 PM

10

1367.00

CEUX

GENMAB A/S

28-Mar-25

2:30:01 PM

101

1367.50

XCSE

GENMAB A/S

28-Mar-25

2:30:20 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:20 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:20 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:20 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:20 PM

3

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:20 PM

5

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:29 PM

16

1368.50

XCSE

GENMAB A/S

28-Mar-25

2:30:29 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

2:30:29 PM

7

1368.50

XCSE

GENMAB A/S

28-Mar-25

2:30:29 PM

12

1368.50

XCSE

171

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:30:29 PM

42

1368.50

XCSE

GENMAB A/S

28-Mar-25

2:30:37 PM

30

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:37 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:38 PM

5

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:38 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:38 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:38 PM

10

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:38 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:30:38 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:31:12 PM

75

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:31:12 PM

75

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:31:12 PM

36

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:31:12 PM

10

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:31:12 PM

11

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:31:12 PM

33

1370.50

TQEX

GENMAB A/S

28-Mar-25

2:31:12 PM

22

1370.50

AQEU

GENMAB A/S

28-Mar-25

2:31:16 PM

42

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:31:16 PM

20

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:31:16 PM

36

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:31:16 PM

2

1370.50

TQEX

GENMAB A/S

28-Mar-25

2:31:16 PM

22

1370.50

TQEX

GENMAB A/S

28-Mar-25

2:31:16 PM

34

1370.50

AQEU

GENMAB A/S

28-Mar-25

2:31:26 PM

2

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:31:31 PM

46

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:31:31 PM

24

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:31:47 PM

20

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:32:17 PM

62

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:32:17 PM

14

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:32:17 PM

15

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:32:17 PM

36

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:32:25 PM

18

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:32:49 PM

44

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:32:49 PM

80

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:32:49 PM

3

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:32:49 PM

36

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:32:49 PM

29

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:32:49 PM

48

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:32:49 PM

22

1371.50

TQEX

GENMAB A/S

28-Mar-25

2:32:49 PM

31

1371.50

AQEU

GENMAB A/S

28-Mar-25

2:33:05 PM

8

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:33:05 PM

14

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:33:05 PM

32

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:33:09 PM

42

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:33:09 PM

12

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:33:24 PM

17

1371.00

XCSE

172

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:33:24 PM

12

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:33:24 PM

64

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:33:24 PM

42

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:33:24 PM

10

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:33:24 PM

30

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:33:24 PM

74

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:33:24 PM

28

1370.50

TQEX

GENMAB A/S

28-Mar-25

2:33:27 PM

79

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:33:40 PM

78

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:33:59 PM

30

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:33:59 PM

25

1370.50

TQEX

GENMAB A/S

28-Mar-25

2:34:17 PM

75

1369.50

XCSE

GENMAB A/S

28-Mar-25

2:34:17 PM

76

1369.50

CEUX

GENMAB A/S

28-Mar-25

2:34:17 PM

34

1369.50

TQEX

GENMAB A/S

28-Mar-25

2:34:38 PM

27

1369.50

CEUX

GENMAB A/S

28-Mar-25

2:34:38 PM

1

1369.50

CEUX

GENMAB A/S

28-Mar-25

2:34:38 PM

22

1369.50

CEUX

GENMAB A/S

28-Mar-25

2:35:25 PM

3

1370.00

CEUX

GENMAB A/S

28-Mar-25

2:35:25 PM

30

1370.00

CEUX

GENMAB A/S

28-Mar-25

2:35:26 PM

3

1370.00

CEUX

GENMAB A/S

28-Mar-25

2:35:26 PM

58

1370.00

CEUX

GENMAB A/S

28-Mar-25

2:35:35 PM

78

1369.50

CEUX

GENMAB A/S

28-Mar-25

2:35:35 PM

22

1369.50

TQEX

GENMAB A/S

28-Mar-25

2:35:42 PM

42

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

14

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

50

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

13

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

9

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

13

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

19

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

42

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:42 PM

76

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:35:51 PM

42

1368.50

XCSE

GENMAB A/S

28-Mar-25

2:35:51 PM

1

1368.50

XCSE

GENMAB A/S

28-Mar-25

2:35:51 PM

18

1368.50

AQEU

GENMAB A/S

28-Mar-25

2:35:51 PM

4

1368.50

AQEU

GENMAB A/S

28-Mar-25

2:35:57 PM

4

1368.50

XCSE

GENMAB A/S

28-Mar-25

2:35:57 PM

1

1368.50

AQEU

GENMAB A/S

28-Mar-25

2:36:01 PM

75

1368.00

XCSE

GENMAB A/S

28-Mar-25

2:36:01 PM

80

1368.00

CEUX

GENMAB A/S

28-Mar-25

2:36:12 PM

25

1368.00

TQEX

GENMAB A/S

28-Mar-25

2:38:27 PM

62

1370.00

XCSE

GENMAB A/S

28-Mar-25

2:38:32 PM

35

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:38:33 PM

30

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:38:33 PM

14

1371.00

CEUX

173

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:38:56 PM

38

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:38:56 PM

10

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:38:56 PM

13

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:39:19 PM

38

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:39:19 PM

15

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:40:47 PM

36

1373.00

CEUX

GENMAB A/S

28-Mar-25

2:40:47 PM

78

1373.00

CEUX

GENMAB A/S

28-Mar-25

2:40:47 PM

26

1373.00

AQEU

GENMAB A/S

28-Mar-25

2:41:07 PM

23

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:07 PM

54

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:07 PM

36

1372.50

TQEX

GENMAB A/S

28-Mar-25

2:41:08 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:08 PM

12

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:08 PM

12

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:08 PM

5

1372.50

CEUX

GENMAB A/S

28-Mar-25

2:41:08 PM

6

1372.50

CEUX

GENMAB A/S

28-Mar-25

2:41:08 PM

36

1372.50

CEUX

GENMAB A/S

28-Mar-25

2:41:09 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:09 PM

4

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:09 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:41:09 PM

61

1372.50

CEUX

GENMAB A/S

28-Mar-25

2:42:01 PM

76

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:42:05 PM

62

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:42:05 PM

36

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:42:06 PM

36

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:42:06 PM

5

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:42:14 PM

36

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:42:15 PM

16

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:42:15 PM

32

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:42:26 PM

13

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:42:26 PM

13

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:42:26 PM

44

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:42:26 PM

11

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:42:26 PM

11

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:42:28 PM

54

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:43:16 PM

74

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:43:22 PM

78

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:43:22 PM

5

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:43:22 PM

80

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:43:22 PM

39

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:43:22 PM

11

1371.00

TQEX

GENMAB A/S

28-Mar-25

2:43:22 PM

49

1372.00

TQEX

GENMAB A/S

28-Mar-25

2:43:22 PM

41

1371.00

TQEX

GENMAB A/S

28-Mar-25

2:43:22 PM

3

1371.00

TQEX

GENMAB A/S

28-Mar-25

2:43:22 PM

11

1371.00

TQEX

174

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:43:35 PM

74

1373.00

CEUX

GENMAB A/S

28-Mar-25

2:44:50 PM

24

1372.50

TQEX

GENMAB A/S

28-Mar-25

2:44:58 PM

60

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:44:58 PM

19

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:44:58 PM

75

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:44:58 PM

77

1372.00

CEUX

GENMAB A/S

28-Mar-25

2:44:58 PM

23

1372.00

AQEU

GENMAB A/S

28-Mar-25

2:44:59 PM

11

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:44:59 PM

64

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:44:59 PM

15

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:00 PM

15

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:00 PM

30

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:00 PM

42

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:00 PM

6

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:00 PM

13

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:00 PM

11

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:00 PM

12

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:45:01 PM

77

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:45:01 PM

101

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:45:01 PM

30

1371.00

CEUX

GENMAB A/S

28-Mar-25

2:45:01 PM

22

1371.50

TQEX

GENMAB A/S

28-Mar-25

2:45:02 PM

11

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

12

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

42

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

22

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

13

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

42

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

16

1370.00

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

11

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

12

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:02 PM

13

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:07 PM

3

1370.00

XCSE

GENMAB A/S

28-Mar-25

2:45:11 PM

22

1370.00

AQEU

GENMAB A/S

28-Mar-25

2:45:26 PM

3

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:26 PM

1

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:45:29 PM

101

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:45:29 PM

101

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:45:29 PM

101

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:45:30 PM

101

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:45:30 PM

101

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:45:55 PM

39

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:55 PM

4

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:55 PM

16

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:55 PM

42

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

12

1372.50

XCSE

175

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:45:56 PM

20

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

12

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

16

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

2

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

42

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

11

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

13

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

50

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:45:56 PM

24

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:46:36 PM

12

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:46:36 PM

2

1372.50

XCSE

GENMAB A/S

28-Mar-25

2:46:53 PM

41

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:46:53 PM

75

1371.00

XCSE

GENMAB A/S

28-Mar-25

2:46:53 PM

75

1372.00

XCSE

GENMAB A/S

28-Mar-25

2:46:53 PM

60

1371.50

XCSE

GENMAB A/S

28-Mar-25

2:46:53 PM

74

1371.50

CEUX

GENMAB A/S

28-Mar-25

2:46:53 PM

22

1371.50

TQEX

GENMAB A/S

28-Mar-25

2:47:01 PM

13

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:47:01 PM

77

1370.00

XCSE

GENMAB A/S

28-Mar-25

2:47:01 PM

50

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:47:01 PM

38

1370.50

XCSE

GENMAB A/S

28-Mar-25

2:47:01 PM

34

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:47:01 PM

45

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:47:01 PM

31

1370.00

TQEX

GENMAB A/S

28-Mar-25

2:47:56 PM

101

1370.00

XCSE

GENMAB A/S

28-Mar-25

2:47:56 PM

78

1370.00

XCSE

GENMAB A/S

28-Mar-25

2:47:56 PM

21

1369.50

XCSE

GENMAB A/S

28-Mar-25

2:47:56 PM

30

1369.50

XCSE

GENMAB A/S

28-Mar-25

2:47:56 PM

9

1369.50

XCSE

GENMAB A/S

28-Mar-25

2:47:56 PM

41

1369.50

XCSE

GENMAB A/S

28-Mar-25

2:47:56 PM

54

1369.50

CEUX

GENMAB A/S

28-Mar-25

2:47:56 PM

77

1370.50

CEUX

GENMAB A/S

28-Mar-25

2:47:57 PM

30

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:47:57 PM

12

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:47:57 PM

13

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:47:57 PM

41

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:47:57 PM

5

1369.00

XCSE

GENMAB A/S

28-Mar-25

2:48:58 PM

29

1369.00

CEUX

GENMAB A/S

28-Mar-25

2:48:58 PM

11

1369.00

CEUX

GENMAB A/S

28-Mar-25

2:49:27 PM

74

1369.50

XCSE

GENMAB A/S

28-Mar-25

2:50:54 PM

74

1374.00

XCSE

GENMAB A/S

28-Mar-25

2:50:54 PM

16

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:50:54 PM

42

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:50:54 PM

32

1373.50

TQEX

GENMAB A/S

28-Mar-25

2:51:07 PM

5

1373.50

XCSE

176

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:51:07 PM

30

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:51:07 PM

43

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:51:07 PM

21

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:51:07 PM

50

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:51:07 PM

77

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:51:07 PM

11

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:51:07 PM

42

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:51:07 PM

76

1373.00

CEUX

GENMAB A/S

28-Mar-25

2:51:08 PM

8

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:51:08 PM

17

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:51:08 PM

12

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:00 PM

42

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:00 PM

30

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:00 PM

42

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:00 PM

64

1373.00

CEUX

GENMAB A/S

28-Mar-25

2:52:00 PM

12

1373.00

CEUX

GENMAB A/S

28-Mar-25

2:52:00 PM

22

1373.50

TQEX

GENMAB A/S

28-Mar-25

2:52:08 PM

13

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:08 PM

24

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:08 PM

12

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:09 PM

9

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:52:09 PM

13

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:52:09 PM

77

1373.00

CEUX

GENMAB A/S

28-Mar-25

2:52:09 PM

22

1373.00

AQEU

GENMAB A/S

28-Mar-25

2:52:21 PM

41

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:52:41 PM

14

1373.00

XCSE

GENMAB A/S

28-Mar-25

2:52:53 PM

33

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:53 PM

11

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:53 PM

42

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:52:53 PM

12

1373.50

XCSE

GENMAB A/S

28-Mar-25

2:54:03 PM

74

1374.00

CEUX

GENMAB A/S

28-Mar-25

2:54:03 PM

22

1374.00

AQEU

GENMAB A/S

28-Mar-25

2:54:04 PM

4

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:04 PM

61

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:04 PM

26

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:04 PM

40

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:04 PM

12

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:04 PM

42

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:04 PM

11

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:31 PM

13

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:54:31 PM

13

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:55:21 PM

69

1375.00

XCSE

GENMAB A/S

28-Mar-25

2:55:21 PM

32

1375.00

XCSE

GENMAB A/S

28-Mar-25

2:55:22 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

2:55:25 PM

8

1374.50

TQEX

177

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

2:55:32 PM

12

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:56:27 PM

2

1375.50

CEUX

GENMAB A/S

28-Mar-25

2:56:38 PM

9

1375.00

AQEU

GENMAB A/S

28-Mar-25

2:57:25 PM

37

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:57:25 PM

5

1375.50

XCSE

GENMAB A/S

28-Mar-25

2:57:25 PM

18

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:57:25 PM

10

1374.50

XCSE

GENMAB A/S

28-Mar-25

2:57:25 PM

20

1375.50

CEUX

GENMAB A/S

28-Mar-25

2:57:25 PM

13

1375.00

AQEU

GENMAB A/S

28-Mar-25

2:57:25 PM

8

1374.00

AQEU

GENMAB A/S

28-Mar-25

2:58:13 PM

25

1375.00

XCSE

GENMAB A/S

28-Mar-25

2:58:13 PM

53

1375.00

XCSE

GENMAB A/S

28-Mar-25

2:58:13 PM

8

1375.00

XCSE

GENMAB A/S

28-Mar-25

2:58:25 PM

29

1376.00

CEUX

GENMAB A/S

28-Mar-25

2:58:25 PM

10

1376.00

CEUX

GENMAB A/S

28-Mar-25

2:58:25 PM

21

1376.00

CEUX

GENMAB A/S

28-Mar-25

2:58:40 PM

40

1376.00

XCSE

GENMAB A/S

28-Mar-25

2:59:02 PM

15

1375.50

CEUX

GENMAB A/S

28-Mar-25

2:59:02 PM

78

1375.50

CEUX

GENMAB A/S

28-Mar-25

2:59:02 PM

41

1375.50

TQEX

GENMAB A/S

28-Mar-25

2:59:25 PM

2

1375.50

XCSE

GENMAB A/S

28-Mar-25

2:59:26 PM

7

1375.50

CEUX

GENMAB A/S

28-Mar-25

2:59:59 PM

10

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

3

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

16

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

9

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

11

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

55

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

11

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

13

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

2

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

1

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

4

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

6

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

7

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

2

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

10

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

69

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

31

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:00:00 PM

26

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

38

1374.50

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

13

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

2

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

20

1374.50

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

29

1373.00

CEUX

178

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:00:00 PM

3

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

7

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

6

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

5

1374.50

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

3

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

15

1374.50

CEUX

GENMAB A/S

28-Mar-25

3:00:00 PM

6

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:00:00 PM

16

1374.50

TQEX

GENMAB A/S

28-Mar-25

3:00:00 PM

8

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:00:00 PM

3

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:00:00 PM

5

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:00:00 PM

2

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:00:00 PM

3

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:00:00 PM

15

1374.00

AQEU

GENMAB A/S

28-Mar-25

3:00:00 PM

7

1373.00

AQEU

GENMAB A/S

28-Mar-25

3:00:00 PM

3

1373.00

AQEU

GENMAB A/S

28-Mar-25

3:00:25 PM

5

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:00:25 PM

5

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:00:26 PM

31

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:00:28 PM

1

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:00:28 PM

4

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:01:03 PM

78

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:01:03 PM

80

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:01:03 PM

31

1374.00

TQEX

GENMAB A/S

28-Mar-25

3:01:03 PM

10

1373.00

AQEU

GENMAB A/S

28-Mar-25

3:01:38 PM

3

1372.50

XCSE

GENMAB A/S

28-Mar-25

3:01:38 PM

5

1372.50

XCSE

GENMAB A/S

28-Mar-25

3:01:38 PM

2

1372.50

XCSE

GENMAB A/S

28-Mar-25

3:01:38 PM

14

1372.50

XCSE

GENMAB A/S

28-Mar-25

3:01:38 PM

1

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:01:38 PM

73

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:01:38 PM

8

1373.00

AQEU

GENMAB A/S

28-Mar-25

3:02:17 PM

54

1372.50

XCSE

GENMAB A/S

28-Mar-25

3:02:26 PM

10

1372.50

TQEX

GENMAB A/S

28-Mar-25

3:02:26 PM

17

1372.50

TQEX

GENMAB A/S

28-Mar-25

3:03:12 PM

76

1372.00

CEUX

GENMAB A/S

28-Mar-25

3:03:12 PM

36

1372.50

CEUX

GENMAB A/S

28-Mar-25

3:03:12 PM

6

1372.50

CEUX

GENMAB A/S

28-Mar-25

3:04:07 PM

80

1371.50

XCSE

GENMAB A/S

28-Mar-25

3:04:17 PM

14

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:17 PM

11

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:17 PM

34

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:17 PM

42

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

32

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

53

1372.00

XCSE

179

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:04:18 PM

10

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

13

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

16

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

11

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

20

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

11

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:18 PM

12

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:19 PM

11

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:19 PM

11

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:19 PM

20

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:04:28 PM

14

1372.00

CEUX

GENMAB A/S

28-Mar-25

3:04:28 PM

7

1372.00

CEUX

GENMAB A/S

28-Mar-25

3:04:28 PM

29

1372.00

CEUX

GENMAB A/S

28-Mar-25

3:04:28 PM

12

1372.00

CEUX

GENMAB A/S

28-Mar-25

3:06:02 PM

62

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:06:47 PM

62

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:07:01 PM

17

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:07:30 PM

20

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:07:30 PM

41

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:07:55 PM

37

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:07:56 PM

13

1374.50

XCSE

GENMAB A/S

28-Mar-25

3:07:56 PM

12

1374.50

XCSE

GENMAB A/S

28-Mar-25

3:07:56 PM

14

1374.50

CEUX

GENMAB A/S

28-Mar-25

3:07:57 PM

10

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:07:57 PM

65

1374.00

CEUX

GENMAB A/S

28-Mar-25

3:07:57 PM

23

1374.00

AQEU

GENMAB A/S

28-Mar-25

3:08:00 PM

40

1375.00

CEUX

GENMAB A/S

28-Mar-25

3:08:48 PM

10

1375.00

CEUX

GENMAB A/S

28-Mar-25

3:09:00 PM

11

1375.00

CEUX

GENMAB A/S

28-Mar-25

3:09:47 PM

36

1375.50

XCSE

GENMAB A/S

28-Mar-25

3:10:13 PM

40

1375.50

XCSE

GENMAB A/S

28-Mar-25

3:10:13 PM

1

1375.50

XCSE

GENMAB A/S

28-Mar-25

3:10:13 PM

15

1375.50

XCSE

GENMAB A/S

28-Mar-25

3:10:13 PM

58

1375.50

CEUX

GENMAB A/S

28-Mar-25

3:10:13 PM

36

1375.50

CEUX

GENMAB A/S

28-Mar-25

3:10:13 PM

21

1375.50

CEUX

GENMAB A/S

28-Mar-25

3:10:13 PM

15

1375.50

CEUX

GENMAB A/S

28-Mar-25

3:10:13 PM

37

1375.50

TQEX

GENMAB A/S

28-Mar-25

3:10:14 PM

10

1375.50

CEUX

GENMAB A/S

28-Mar-25

3:10:42 PM

76

1376.00

CEUX

GENMAB A/S

28-Mar-25

3:10:42 PM

28

1376.00

TQEX

GENMAB A/S

28-Mar-25

3:10:52 PM

38

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

13

1375.00

XCSE

180

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:10:52 PM

6

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

42

1374.50

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

38

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

30

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

12

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

74

1374.50

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

4

1375.00

XCSE

GENMAB A/S

28-Mar-25

3:10:52 PM

2

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:10:52 PM

59

1374.50

CEUX

GENMAB A/S

28-Mar-25

3:10:52 PM

6

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:10:52 PM

4

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:10:52 PM

16

1374.50

CEUX

GENMAB A/S

28-Mar-25

3:10:52 PM

7

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:10:52 PM

31

1374.50

TQEX

GENMAB A/S

28-Mar-25

3:10:52 PM

20

1373.50

TQEX

GENMAB A/S

28-Mar-25

3:10:52 PM

20

1373.50

AQEU

GENMAB A/S

28-Mar-25

3:10:52 PM

25

1376.00

AQEU

GENMAB A/S

28-Mar-25

3:10:52 PM

2

1373.50

AQEU

GENMAB A/S

28-Mar-25

3:10:53 PM

3

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:10:53 PM

3

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:10:53 PM

53

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:10:53 PM

1

1373.00

CEUX

GENMAB A/S

28-Mar-25

3:11:00 PM

30

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:11:00 PM

42

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:11:00 PM

42

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:11:00 PM

11

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:11:00 PM

11

1373.50

XCSE

GENMAB A/S

28-Mar-25

3:11:00 PM

77

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:11:18 PM

5

1373.00

XCSE

GENMAB A/S

28-Mar-25

3:11:35 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:35 PM

16

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:35 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:35 PM

19

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:35 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:35 PM

17

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:11:35 PM

6

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:11:35 PM

30

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:11:35 PM

20

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:11:35 PM

25

1373.50

AQEU

GENMAB A/S

28-Mar-25

3:11:36 PM

15

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

15

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

5

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

13

1374.00

XCSE

181

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:11:36 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

3

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

14

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

30

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:36 PM

12

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

9

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

12

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

4

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

3

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:37 PM

5

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

2

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

19

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

6

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

16

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:55 PM

23

1373.50

AQEU

GENMAB A/S

28-Mar-25

3:11:56 PM

13

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:56 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:56 PM

11

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:56 PM

12

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:11:56 PM

42

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:12:03 PM

2

1374.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

60

1372.50

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

8

1373.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

1

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

13

1373.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

66

1373.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

76

1372.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

20

1373.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

4

1373.00

XCSE

GENMAB A/S

28-Mar-25

3:12:27 PM

23

1373.50

CEUX

GENMAB A/S

28-Mar-25

3:12:27 PM

74

1372.50

CEUX

GENMAB A/S

28-Mar-25

3:12:27 PM

22

1372.50

TQEX

GENMAB A/S

28-Mar-25

3:12:55 PM

64

1371.50

CEUX

GENMAB A/S

28-Mar-25

3:12:55 PM

12

1371.50

CEUX

182

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:13:10 PM

80

1371.00

XCSE

GENMAB A/S

28-Mar-25

3:13:10 PM

42

1371.00

XCSE

GENMAB A/S

28-Mar-25

3:13:10 PM

17

1371.00

XCSE

GENMAB A/S

28-Mar-25

3:13:15 PM

79

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:13:15 PM

17

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:13:15 PM

53

1370.00

CEUX

GENMAB A/S

28-Mar-25

3:14:21 PM

80

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:14:21 PM

27

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:14:21 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:15:00 PM

43

1370.50

TQEX

GENMAB A/S

28-Mar-25

3:15:28 PM

2

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:16:21 PM

1

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:16:37 PM

75

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:16:37 PM

1

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:16:42 PM

101

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:16:42 PM

74

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:16:42 PM

22

1370.00

AQEU

GENMAB A/S

28-Mar-25

3:16:43 PM

101

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:16:43 PM

42

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:16:43 PM

59

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:16:43 PM

80

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:16:53 PM

40

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:16:53 PM

22

1369.50

TQEX

GENMAB A/S

28-Mar-25

3:16:58 PM

74

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:16:58 PM

23

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:16:58 PM

25

1368.50

AQEU

GENMAB A/S

28-Mar-25

3:17:10 PM

12

1368.50

AQEU

GENMAB A/S

28-Mar-25

3:17:10 PM

10

1368.50

AQEU

GENMAB A/S

28-Mar-25

3:17:47 PM

35

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:17:47 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:17:47 PM

35

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:17:47 PM

16

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:18:54 PM

50

1368.50

CEUX

GENMAB A/S

28-Mar-25

3:18:54 PM

22

1368.50

AQEU

GENMAB A/S

28-Mar-25

3:18:56 PM

15

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:18:56 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:18:56 PM

30

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:18:56 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:18:56 PM

80

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:18:56 PM

14

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:21:12 PM

73

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:21:12 PM

2

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:21:12 PM

75

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:21:12 PM

22

1369.50

TQEX

GENMAB A/S

28-Mar-25

3:21:25 PM

12

1369.50

XCSE

183

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:21:26 PM

6

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:22:27 PM

53

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:22:30 PM

4

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:23:10 PM

28

1370.00

TQEX

GENMAB A/S

28-Mar-25

3:24:37 PM

74

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:24:42 PM

11

1370.00

AQEU

GENMAB A/S

28-Mar-25

3:25:10 PM

30

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:25:10 PM

11

1370.00

AQEU

GENMAB A/S

28-Mar-25

3:25:43 PM

9

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:25:57 PM

71

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:25:57 PM

36

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:25:57 PM

34

1370.50

AQEU

GENMAB A/S

28-Mar-25

3:26:25 PM

13

1371.00

XCSE

GENMAB A/S

28-Mar-25

3:26:25 PM

6

1371.00

CEUX

GENMAB A/S

28-Mar-25

3:26:28 PM

6

1371.00

CEUX

GENMAB A/S

28-Mar-25

3:27:26 PM

22

1371.00

CEUX

GENMAB A/S

28-Mar-25

3:27:50 PM

3

1371.00

XCSE

GENMAB A/S

28-Mar-25

3:27:50 PM

11

1371.00

CEUX

GENMAB A/S

28-Mar-25

3:28:29 PM

24

1371.00

TQEX

GENMAB A/S

28-Mar-25

3:28:29 PM

13

1371.00

TQEX

GENMAB A/S

28-Mar-25

3:28:38 PM

61

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:28:38 PM

15

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:29:26 PM

12

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:30:43 PM

34

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:30:43 PM

16

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:30:47 PM

20

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:30:59 PM

13

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

42

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

22

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

35

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

4

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

44

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

20

1370.50

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

79

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:30:59 PM

7

1370.50

CEUX

GENMAB A/S

28-Mar-25

3:30:59 PM

46

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:30:59 PM

25

1370.00

TQEX

GENMAB A/S

28-Mar-25

3:31:00 PM

12

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

11

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

20

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

20

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

12

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

12

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

42

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

12

1370.00

XCSE

184

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:31:00 PM

12

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

13

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:00 PM

21

1369.50

TQEX

GENMAB A/S

28-Mar-25

3:31:00 PM

3

1369.50

TQEX

GENMAB A/S

28-Mar-25

3:31:01 PM

42

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:01 PM

13

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:01 PM

19

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:01 PM

42

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:01 PM

11

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:01 PM

13

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:02 PM

5

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:02 PM

11

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:22 PM

12

1370.00

XCSE

GENMAB A/S

28-Mar-25

3:31:30 PM

31

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:31:30 PM

45

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:31:30 PM

27

1369.50

TQEX

GENMAB A/S

28-Mar-25

3:31:31 PM

2

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:47 PM

30

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:47 PM

11

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:47 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:47 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:47 PM

41

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:47 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:47 PM

36

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:31:47 PM

6

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:31:47 PM

5

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:31:51 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:51 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:51 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:52 PM

3

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:52 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:52 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:53 PM

11

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:55 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:55 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:55 PM

41

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:55 PM

41

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:55 PM

12

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:31:56 PM

41

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:56 PM

41

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:56 PM

41

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:56 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:56 PM

11

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:56 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:56 PM

11

1369.50

XCSE

185

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:31:56 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:56 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:57 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:31:58 PM

13

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:32:08 PM

10

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:32:08 PM

15

1369.50

CEUX

GENMAB A/S

28-Mar-25

3:32:10 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:32:10 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:32:11 PM

11

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:32:11 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:32:18 PM

7

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:32:32 PM

52

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:32:32 PM

6

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:32:32 PM

17

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:32:32 PM

69

1368.50

CEUX

GENMAB A/S

28-Mar-25

3:32:32 PM

42

1368.50

TQEX

GENMAB A/S

28-Mar-25

3:33:13 PM

23

1368.00

AQEU

GENMAB A/S

28-Mar-25

3:33:26 PM

35

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:33:26 PM

1

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:33:27 PM

4

1368.50

XCSE

GENMAB A/S

28-Mar-25

3:33:27 PM

73

1368.50

XCSE

GENMAB A/S

28-Mar-25

3:33:28 PM

2

1368.50

XCSE

GENMAB A/S

28-Mar-25

3:33:29 PM

20

1368.50

XCSE

GENMAB A/S

28-Mar-25

3:33:48 PM

53

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:09 PM

24

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:09 PM

78

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:34:25 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

20

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

44

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

25

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

3

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:25 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:34:28 PM

3

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:34:28 PM

11

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:34:28 PM

78

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:34:37 PM

20

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:34:37 PM

3

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:34:37 PM

10

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:34:48 PM

20

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:34:48 PM

20

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:34:51 PM

4

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:36:00 PM

36

1369.00

XCSE

186

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:36:00 PM

43

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:36:15 PM

4

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:36:15 PM

1

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:36:20 PM

75

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:36:28 PM

12

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:36:28 PM

65

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:36:28 PM

11

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:36:28 PM

13

1369.00

XCSE

GENMAB A/S

28-Mar-25

3:36:28 PM

39

1369.50

XCSE

GENMAB A/S

28-Mar-25

3:37:38 PM

23

1368.50

TQEX

GENMAB A/S

28-Mar-25

3:37:47 PM

76

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:18 PM

75

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:38:18 PM

5

1369.00

CEUX

GENMAB A/S

28-Mar-25

3:38:31 PM

50

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:38:31 PM

24

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:38:38 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:38 PM

9

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:38 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:39 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:39 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:39 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:39 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:39 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:39 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:40 PM

33

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:40 PM

33

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:40 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:40 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:40 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:40 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

33

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

33

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

33

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:41 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:42 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:42 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:42 PM

33

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:42 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:42 PM

33

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:42 PM

33

1368.00

XCSE

187

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:38:42 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:51 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:38:51 PM

8

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:39:11 PM

2

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:39:11 PM

15

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:39:11 PM

53

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:39:17 PM

80

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:40:27 PM

46

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:41:05 PM

34

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:41:05 PM

35

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:41:05 PM

8

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:41:07 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:41:08 PM

32

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:41:38 PM

6

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:41:38 PM

6

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:43:01 PM

30

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:43:01 PM

45

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:43:01 PM

25

1367.00

TQEX

GENMAB A/S

28-Mar-25

3:43:14 PM

23

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:43:26 PM

54

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:43:26 PM

20

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:43:26 PM

1

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:43:57 PM

44

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:05 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:05 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:05 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:06 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:10 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:10 PM

42

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:42 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:44:42 PM

36

1366.50

CEUX

GENMAB A/S

28-Mar-25

3:45:34 PM

35

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:45:34 PM

41

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:45:44 PM

16

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:44 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:44 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:44 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:44 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:44 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:44 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:45 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:45 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:49 PM

39

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:49 PM

40

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:49 PM

11

1367.00

XCSE

188

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:45:49 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:49 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:49 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:49 PM

39

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:49 PM

1

1366.50

AQEU

GENMAB A/S

28-Mar-25

3:45:49 PM

20

1366.50

AQEU

GENMAB A/S

28-Mar-25

3:45:49 PM

10

1366.50

AQEU

GENMAB A/S

28-Mar-25

3:45:50 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:50 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:50 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:50 PM

39

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:50 PM

34

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:50 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:50 PM

39

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:50 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:51 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:51 PM

35

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:51 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:45:51 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:46:07 PM

77

1366.00

XCSE

GENMAB A/S

28-Mar-25

3:46:07 PM

22

1366.00

TQEX

GENMAB A/S

28-Mar-25

3:46:08 PM

22

1366.50

CEUX

GENMAB A/S

28-Mar-25

3:46:08 PM

20

1366.50

CEUX

GENMAB A/S

28-Mar-25

3:46:51 PM

74

1366.50

XCSE

GENMAB A/S

28-Mar-25

3:46:51 PM

12

1366.50

CEUX

GENMAB A/S

28-Mar-25

3:46:51 PM

25

1366.50

CEUX

GENMAB A/S

28-Mar-25

3:46:51 PM

48

1366.50

TQEX

GENMAB A/S

28-Mar-25

3:46:57 PM

75

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:52:12 PM

8

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:52:12 PM

8

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:13 PM

9

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:22 PM

4

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:52:22 PM

4

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:22 PM

2

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:29 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:29 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:30 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:30 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:33 PM

32

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:38 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

3:52:38 PM

9

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:39 PM

27

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:39 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:39 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:39 PM

6

1368.00

CEUX

189

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:52:48 PM

3

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:52:53 PM

24

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:53:07 PM

31

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:53:27 PM

1

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:55:15 PM

13

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:15 PM

13

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:15 PM

1

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:15 PM

78

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:55:15 PM

42

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:15 PM

11

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:16 PM

18

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:16 PM

24

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:16 PM

6

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:16 PM

17

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:16 PM

42

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:16 PM

13

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:16 PM

82

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:55:28 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:55:28 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:55:28 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:55:28 PM

5

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:55:28 PM

13

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:55:28 PM

14

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:55:28 PM

5

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:55:57 PM

26

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:55:57 PM

36

1367.00

CEUX

GENMAB A/S

28-Mar-25

3:56:01 PM

67

1366.50

CEUX

GENMAB A/S

28-Mar-25

3:56:01 PM

11

1366.50

CEUX

GENMAB A/S

28-Mar-25

3:56:01 PM

3

1366.50

TQEX

GENMAB A/S

28-Mar-25

3:57:31 PM

11

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:57:31 PM

25

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:57:31 PM

10

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:57:31 PM

20

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:58:16 PM

36

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:58:25 PM

11

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:58:26 PM

9

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:58:47 PM

77

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:58:47 PM

36

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:58:47 PM

66

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:58:48 PM

23

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:58:48 PM

78

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:25 PM

10

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:26 PM

16

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:57 PM

80

1367.00

XCSE

GENMAB A/S

28-Mar-25

3:59:57 PM

5

1367.50

CEUX

190

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

3:59:57 PM

6

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:57 PM

36

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:57 PM

5

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:57 PM

78

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:57 PM

5

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:57 PM

14

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:57 PM

30

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:58 PM

91

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:59:58 PM

2

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:59:58 PM

8

1367.50

XCSE

GENMAB A/S

28-Mar-25

3:59:58 PM

5

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:58 PM

25

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:58 PM

76

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:58 PM

6

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:59 PM

5

1367.50

CEUX

GENMAB A/S

28-Mar-25

3:59:59 PM

33

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:59 PM

5

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:59 PM

5

1368.00

CEUX

GENMAB A/S

28-Mar-25

3:59:59 PM

36

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:00:00 PM

13

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:00:00 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:00:02 PM

32

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:00:18 PM

2

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:00:21 PM

78

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:00:21 PM

32

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:00:31 PM

41

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:31 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:31 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:31 PM

60

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:31 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:31 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:31 PM

6

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:00:31 PM

68

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:00:31 PM

76

1367.00

TQEX

GENMAB A/S

28-Mar-25

4:00:31 PM

39

1367.00

AQEU

GENMAB A/S

28-Mar-25

4:00:32 PM

44

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:32 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:32 PM

35

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:32 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:45 PM

4

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:45 PM

30

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:45 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:45 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:45 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

11

1367.00

XCSE

191

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:00:46 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

30

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

3

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

33

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

38

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

47

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

1

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:46 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:47 PM

1

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:47 PM

14

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:00:58 PM

42

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:00:58 PM

59

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:01:00 PM

34

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:00 PM

43

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:00 PM

79

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:01:06 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:06 PM

41

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:06 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:06 PM

11

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:06 PM

11

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:07 PM

2

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:13 PM

28

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:01:13 PM

18

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:13 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:13 PM

42

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:01:13 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:01:13 PM

76

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:01:13 PM

22

1365.50

AQEU

GENMAB A/S

28-Mar-25

4:01:15 PM

28

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:01:15 PM

59

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:01:25 PM

11

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:01:25 PM

12

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:02:23 PM

7

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:02:24 PM

8

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:02:26 PM

1

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:02:26 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:02:55 PM

37

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:02:55 PM

34

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:02:55 PM

40

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:02:55 PM

23

1365.50

AQEU

192

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:02:56 PM

39

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:02:56 PM

42

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:02:56 PM

24

1365.00

TQEX

GENMAB A/S

28-Mar-25

4:03:05 PM

13

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:03:28 PM

10

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:03:46 PM

34

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:03:46 PM

46

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:04:42 PM

11

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:04:52 PM

32

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:04:52 PM

41

1365.00

TQEX

GENMAB A/S

28-Mar-25

4:04:52 PM

30

1365.00

TQEX

GENMAB A/S

28-Mar-25

4:05:00 PM

11

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:05:11 PM

77

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:05:25 PM

12

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:05:43 PM

43

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:05:43 PM

37

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:05:43 PM

1

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:05:43 PM

38

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:05:43 PM

76

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:05:43 PM

25

1365.00

TQEX

GENMAB A/S

28-Mar-25

4:06:37 PM

60

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:07:25 PM

1

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:07:25 PM

10

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:07:26 PM

1

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:07:30 PM

11

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:07:30 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:07:30 PM

36

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:07:30 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:07:30 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:07:30 PM

41

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:08:07 PM

14

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:07 PM

36

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:07 PM

78

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:07 PM

44

1365.00

TQEX

GENMAB A/S

28-Mar-25

4:08:16 PM

23

1364.50

AQEU

GENMAB A/S

28-Mar-25

4:08:25 PM

36

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:25 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:25 PM

6

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:26 PM

13

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:26 PM

52

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:26 PM

13

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:26 PM

23

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:27 PM

24

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:27 PM

12

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:27 PM

12

1365.00

XCSE

193

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:08:27 PM

51

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:27 PM

11

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:28 PM

13

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:28 PM

27

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:30 PM

11

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:30 PM

11

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:33 PM

11

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:08:38 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:38 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:38 PM

12

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:48 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:48 PM

7

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:48 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:48 PM

19

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:08:54 PM

42

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:08:54 PM

12

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:08:54 PM

42

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:08:54 PM

1

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:09:25 PM

3

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:09:25 PM

2

1364.50

AQEU

GENMAB A/S

28-Mar-25

4:09:29 PM

10

1364.50

AQEU

GENMAB A/S

28-Mar-25

4:10:02 PM

41

1364.50

TQEX

GENMAB A/S

28-Mar-25

4:10:07 PM

25

1364.50

AQEU

GENMAB A/S

28-Mar-25

4:10:48 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:10:48 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:10:54 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:03 PM

2

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:11:19 PM

36

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:11:19 PM

6

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:11:19 PM

6

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:11:19 PM

9

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:11:19 PM

34

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:11:26 PM

10

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:11:32 PM

32

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:11:39 PM

42

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:39 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:39 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:39 PM

18

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:39 PM

15

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:40 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:40 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:40 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:40 PM

78

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:41 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:11:41 PM

13

1366.00

XCSE

194

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:11:57 PM

11

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:12:03 PM

2

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:12:26 PM

3

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

74

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:12:27 PM

74

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

2

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

2

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

2

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

2

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

6

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

15

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

3

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:27 PM

31

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:12:35 PM

41

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:37 PM

32

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

3

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

32

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

25

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

2

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

42

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

2

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

80

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

20

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

1

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

5

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

2

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

5

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

21

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

43

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

2

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

17

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:12:46 PM

2

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

12

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

5

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

2

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

2

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

30

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

8

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

10

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

15

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

10

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

36

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

4

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

4

1363.50

CEUX

195

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:12:46 PM

3

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

10

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:12:46 PM

46

1364.50

TQEX

GENMAB A/S

28-Mar-25

4:12:47 PM

34

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:12:47 PM

2

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:13:27 PM

71

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:27 PM

6

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:27 PM

36

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:13:28 PM

41

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:28 PM

21

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:28 PM

8

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:28 PM

42

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:28 PM

11

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:28 PM

10

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:28 PM

5

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:29 PM

11

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:29 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:29 PM

11

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:32 PM

13

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:32 PM

13

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:32 PM

42

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:13:33 PM

22

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:13:56 PM

44

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:14:00 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:14:00 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:14:00 PM

16

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:14:10 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:14:10 PM

42

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:14:10 PM

12

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:14:40 PM

11

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:14:40 PM

66

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:14:43 PM

12

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:43 PM

10

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:43 PM

77

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:43 PM

12

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:14:43 PM

35

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:14:43 PM

10

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:14:43 PM

29

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:14:52 PM

31

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

42

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

11

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

11

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

12

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

33

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

13

1364.00

XCSE

196

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:14:52 PM

11

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

27

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:52 PM

13

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:53 PM

13

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:53 PM

30

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:53 PM

12

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:53 PM

13

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:53 PM

12

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:53 PM

42

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:54 PM

64

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:54 PM

15

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:55 PM

21

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:55 PM

42

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:55 PM

27

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:55 PM

13

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:55 PM

61

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:57 PM

11

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:14:57 PM

27

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:15:10 PM

80

1364.00

XCSE

GENMAB A/S

28-Mar-25

4:15:10 PM

79

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:15:10 PM

23

1364.00

TQEX

GENMAB A/S

28-Mar-25

4:15:59 PM

27

1364.00

AQEU

GENMAB A/S

28-Mar-25

4:16:13 PM

75

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:13 PM

4

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:13 PM

32

1364.00

CEUX

GENMAB A/S

28-Mar-25

4:16:13 PM

12

1364.00

AQEU

GENMAB A/S

28-Mar-25

4:16:14 PM

1

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:14 PM

3

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:14 PM

13

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:14 PM

75

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:15 PM

43

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:34 PM

25

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:16:51 PM

77

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:17:25 PM

12

1363.50

AQEU

GENMAB A/S

28-Mar-25

4:17:57 PM

4

1363.50

AQEU

GENMAB A/S

28-Mar-25

4:19:00 PM

28

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:19:00 PM

52

1363.50

XCSE

GENMAB A/S

28-Mar-25

4:19:00 PM

36

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:19:00 PM

7

1363.50

AQEU

GENMAB A/S

28-Mar-25

4:19:00 PM

2

1363.50

AQEU

GENMAB A/S

28-Mar-25

4:19:27 PM

2

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:19:27 PM

16

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:19:50 PM

11

1363.50

CEUX

GENMAB A/S

28-Mar-25

4:21:07 PM

49

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:21:07 PM

31

1364.50

XCSE

197

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:21:07 PM

27

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:21:07 PM

56

1364.50

CEUX

GENMAB A/S

28-Mar-25

4:21:07 PM

77

1364.50

CEUX

GENMAB A/S

28-Mar-25

4:21:07 PM

45

1364.50

CEUX

GENMAB A/S

28-Mar-25

4:21:07 PM

35

1364.50

AQEU

GENMAB A/S

28-Mar-25

4:21:08 PM

14

1364.50

CEUX

GENMAB A/S

28-Mar-25

4:21:30 PM

75

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:21:30 PM

8

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:21:30 PM

7

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:21:34 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:21:34 PM

6

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:21:34 PM

6

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:21:34 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:21:34 PM

17

1364.50

CEUX

GENMAB A/S

28-Mar-25

4:21:43 PM

58

1364.50

CEUX

GENMAB A/S

28-Mar-25

4:21:43 PM

36

1364.50

CEUX

GENMAB A/S

28-Mar-25

4:21:44 PM

4

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:21:44 PM

41

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:23:07 PM

46

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:23:32 PM

95

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:23:32 PM

2

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:23:32 PM

18

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:23:32 PM

14

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:23:32 PM

8

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:23:32 PM

10

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:23:57 PM

29

1365.00

TQEX

GENMAB A/S

28-Mar-25

4:24:00 PM

30

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:24:00 PM

28

1365.00

TQEX

GENMAB A/S

28-Mar-25

4:24:00 PM

8

1365.00

AQEU

GENMAB A/S

28-Mar-25

4:24:03 PM

8

1365.00

AQEU

GENMAB A/S

28-Mar-25

4:24:37 PM

34

1364.50

XCSE

GENMAB A/S

28-Mar-25

4:24:37 PM

8

1365.00

AQEU

GENMAB A/S

28-Mar-25

4:25:28 PM

8

1365.00

AQEU

GENMAB A/S

28-Mar-25

4:26:28 PM

1

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:28 PM

59

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:28 PM

6

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:28 PM

11

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:32 PM

53

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:32 PM

12

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:32 PM

12

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:32 PM

12

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:32 PM

36

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:32 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:32 PM

6

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:33 PM

24

1365.00

CEUX

198

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:26:33 PM

21

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:33 PM

6

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:35 PM

12

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:35 PM

11

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:35 PM

13

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:35 PM

5

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:36 PM

42

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:26:36 PM

31

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:36 PM

21

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:41 PM

73

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:26:53 PM

45

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:26:53 PM

36

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:26:53 PM

34

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:26:54 PM

41

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

28

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

17

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

5

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

48

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

8

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

31

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:49 PM

53

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:50 PM

18

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:27:50 PM

53

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:28:00 PM

3

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:28:27 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:28:27 PM

53

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:28:42 PM

43

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:28:42 PM

28

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:28:42 PM

36

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:28:42 PM

54

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:28:44 PM

11

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:29:03 PM

13

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:29:17 PM

35

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:17 PM

6

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:29:17 PM

36

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:29:17 PM

5

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:29:17 PM

25

1365.50

AQEU

GENMAB A/S

28-Mar-25

4:29:26 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

12

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

11

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

18

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

12

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

30

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

30

1365.50

XCSE

199

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:29:26 PM

11

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

12

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

30

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

21

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:26 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:26 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:26 PM

36

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:26 PM

17

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:26 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:26 PM

26

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:26 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:26 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:29:27 PM

12

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:27 PM

9

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:29:27 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:30:17 PM

11

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:30:25 PM

2

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:30:43 PM

10

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:30:49 PM

3

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:31:04 PM

12

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:31:05 PM

42

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:31:31 PM

20

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:31:31 PM

30

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:31:37 PM

36

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:31:46 PM

62

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:31:55 PM

31

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:00 PM

11

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:00 PM

10

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:03 PM

15

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:03 PM

11

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:11 PM

58

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:12 PM

34

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:15 PM

28

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:16 PM

8

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:32:16 PM

17

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:16 PM

56

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:32:17 PM

2

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:32:28 PM

63

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:32:28 PM

10

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:32:28 PM

22

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:32:28 PM

15

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:32:28 PM

16

1366.00

AQEU

200

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:32:45 PM

51

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:46 PM

7

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:32:46 PM

64

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:32:46 PM

22

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:32:47 PM

23

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:32:48 PM

5

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:33:07 PM

48

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:33:26 PM

10

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:26 PM

25

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:26 PM

2

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:26 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:26 PM

53

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:26 PM

75

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:33:26 PM

24

1366.50

TQEX

GENMAB A/S

28-Mar-25

4:33:27 PM

9

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:27 PM

42

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:27 PM

50

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:28 PM

73

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:31 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:31 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:31 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:31 PM

53

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:38 PM

5

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:39 PM

18

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:39 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:39 PM

53

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:39 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:40 PM

43

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:53 PM

53

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:53 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:53 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:33:54 PM

10

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:33:59 PM

16

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:34:00 PM

40

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:34:00 PM

22

1366.50

AQEU

GENMAB A/S

28-Mar-25

4:34:37 PM

5

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:34:37 PM

42

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:34:37 PM

36

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:34:37 PM

13

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:34:41 PM

30

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:34:41 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:34:41 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:34:41 PM

1

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:34:45 PM

7

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:34:45 PM

10

1367.00

XCSE

201

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:34:45 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:34:45 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:34:45 PM

30

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:34:45 PM

53

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:34:51 PM

12

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:34:51 PM

13

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:35:01 PM

1

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:35:01 PM

2

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:35:01 PM

25

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:35:01 PM

1

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:35:01 PM

32

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:35:01 PM

28

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:01 PM

22

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:01 PM

3

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:03 PM

3

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:03 PM

2

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:03 PM

3

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:03 PM

7

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:03 PM

15

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

2

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

1

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

3

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

3

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

10

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

2

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

3

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:03 PM

3

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:35:08 PM

79

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:08 PM

5

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:08 PM

53

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:08 PM

15

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:08 PM

7

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:08 PM

11

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:08 PM

10

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:08 PM

28

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:35:20 PM

76

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:20 PM

21

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:35:20 PM

10

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:35:20 PM

45

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:35:20 PM

25

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:35:20 PM

3

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:35:20 PM

7

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:35:20 PM

4

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:35:20 PM

4

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:35:20 PM

2

1368.50

TQEX

202

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:35:20 PM

2

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:35:20 PM

22

1369.00

AQEU

GENMAB A/S

28-Mar-25

4:35:25 PM

10

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:25 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:25 PM

11

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:26 PM

5

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:34 PM

25

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:35:34 PM

7

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:34 PM

14

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:35:37 PM

18

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:35:37 PM

12

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:35:37 PM

9

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:35:37 PM

36

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:35:37 PM

20

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:35:37 PM

6

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:35:37 PM

48

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:35:37 PM

5

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:35:37 PM

5

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:35:37 PM

3

1367.00

TQEX

GENMAB A/S

28-Mar-25

4:35:37 PM

3

1367.00

TQEX

GENMAB A/S

28-Mar-25

4:35:37 PM

2

1367.00

TQEX

GENMAB A/S

28-Mar-25

4:35:37 PM

6

1367.00

TQEX

GENMAB A/S

28-Mar-25

4:35:37 PM

17

1367.00

TQEX

GENMAB A/S

28-Mar-25

4:35:37 PM

5

1367.00

TQEX

GENMAB A/S

28-Mar-25

4:36:18 PM

65

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:18 PM

36

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:27 PM

15

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:36:30 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:30 PM

22

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:30 PM

1

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:30 PM

13

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:30 PM

53

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:30 PM

12

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:36:31 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:31 PM

10

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:36:31 PM

53

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:31 PM

2

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:31 PM

24

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:36:31 PM

23

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:36:42 PM

7

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:36:57 PM

10

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:36:57 PM

11

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:36:57 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:36:57 PM

3

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:36:57 PM

8

1368.00

CEUX

203

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:36:59 PM

69

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:37:08 PM

6

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:37:08 PM

15

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:37:08 PM

6

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:37:08 PM

12

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:37:26 PM

7

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:37:26 PM

22

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:37:37 PM

10

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:37:37 PM

6

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:37:37 PM

6

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:37:37 PM

25

1367.00

AQEU

GENMAB A/S

28-Mar-25

4:37:46 PM

10

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:37:46 PM

63

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:38:34 PM

26

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:38:34 PM

30

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:38:34 PM

15

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:38:47 PM

65

1367.00

CEUX

GENMAB A/S

28-Mar-25

4:39:14 PM

22

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:39:14 PM

75

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:39:14 PM

8

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:39:16 PM

83

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:39:17 PM

12

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:39:37 PM

11

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:39:48 PM

52

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:40:32 PM

1

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:32 PM

1

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:32 PM

5

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:33 PM

90

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:40:33 PM

9

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:40:40 PM

53

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:40 PM

11

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:40 PM

3

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:45 PM

39

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:40:48 PM

53

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:48 PM

10

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:48 PM

12

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:48 PM

79

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:48 PM

12

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:40:48 PM

27

1367.50

TQEX

GENMAB A/S

28-Mar-25

4:41:00 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

32

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

42

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

2

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

25

1368.00

XCSE

204

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:41:00 PM

46

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

10

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:00 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:01 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:01 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:01 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:01 PM

93

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:03 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:03 PM

53

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:03 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:03 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:04 PM

12

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:04 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:04 PM

11

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:15 PM

5

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:41:17 PM

56

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:41:37 PM

53

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:41:37 PM

12

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:41:37 PM

11

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:41:39 PM

93

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:41:40 PM

53

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:41:40 PM

13

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:41:40 PM

11

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:42:05 PM

12

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:42:05 PM

11

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:42:05 PM

53

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:42:06 PM

39

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:42:15 PM

46

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:42:18 PM

35

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:42:18 PM

19

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:42:18 PM

17

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:42:18 PM

42

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:42:18 PM

9

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:42:18 PM

42

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:42:18 PM

25

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:42:23 PM

13

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:42:23 PM

9

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:42:23 PM

12

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:43:02 PM

52

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:43:02 PM

11

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:43:02 PM

101

1369.00

CEUX

GENMAB A/S

28-Mar-25

4:43:18 PM

49

1369.00

CEUX

GENMAB A/S

28-Mar-25

4:43:27 PM

26

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:43:36 PM

28

1369.00

XCSE

205

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:43:36 PM

53

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:43:38 PM

37

1369.00

CEUX

GENMAB A/S

28-Mar-25

4:43:38 PM

8

1369.00

CEUX

GENMAB A/S

28-Mar-25

4:43:46 PM

40

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:43:46 PM

29

1369.00

AQEU

GENMAB A/S

28-Mar-25

4:43:49 PM

22

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:44:02 PM

28

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:44:02 PM

19

1369.00

XCSE

GENMAB A/S

28-Mar-25

4:44:08 PM

13

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:44:08 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:44:08 PM

53

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:44:08 PM

50

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:44:08 PM

20

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:44:08 PM

22

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:44:13 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:44:23 PM

7

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:44:28 PM

10

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:44:28 PM

28

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:44:28 PM

10

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:44:28 PM

22

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:45:00 PM

12

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:45:08 PM

24

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:45:08 PM

42

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:45:28 PM

1

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:45:28 PM

4

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:45:28 PM

31

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:45:28 PM

2

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:46:15 PM

41

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:46:17 PM

33

1368.50

TQEX

GENMAB A/S

28-Mar-25

4:46:22 PM

11

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:22 PM

5

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:22 PM

1

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:22 PM

5

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:22 PM

42

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:46:24 PM

13

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:24 PM

1

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:24 PM

11

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:24 PM

44

1368.50

CEUX

GENMAB A/S

28-Mar-25

4:46:29 PM

30

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:29 PM

13

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:29 PM

53

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:29 PM

13

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:29 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:29 PM

8

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:29 PM

5

1368.50

XCSE

206

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:46:29 PM

12

1368.50

XCSE

GENMAB A/S

28-Mar-25

4:46:47 PM

21

1368.00

AQEU

GENMAB A/S

28-Mar-25

4:47:24 PM

1

1368.00

AQEU

GENMAB A/S

28-Mar-25

4:47:25 PM

30

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:47:25 PM

21

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:47:26 PM

11

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:47:37 PM

22

1368.00

AQEU

GENMAB A/S

28-Mar-25

4:47:55 PM

47

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:47:55 PM

34

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:47:55 PM

11

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:02 PM

47

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:48:02 PM

12

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:48:04 PM

5

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:48:04 PM

42

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:48:04 PM

5

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:48:05 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:48:05 PM

13

1368.00

XCSE

GENMAB A/S

28-Mar-25

4:48:05 PM

36

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:48:05 PM

2

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:05 PM

2

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:05 PM

11

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:07 PM

33

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:48:07 PM

37

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:48:07 PM

25

1367.50

TQEX

GENMAB A/S

28-Mar-25

4:48:07 PM

2

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:07 PM

11

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:07 PM

3

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:07 PM

6

1368.00

TQEX

GENMAB A/S

28-Mar-25

4:48:25 PM

33

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:48:36 PM

41

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:48:36 PM

8

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:48:52 PM

14

1367.00

AQEU

GENMAB A/S

28-Mar-25

4:48:52 PM

5

1367.00

AQEU

GENMAB A/S

28-Mar-25

4:48:55 PM

12

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:48:55 PM

34

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:49:19 PM

27

1368.00

AQEU

GENMAB A/S

28-Mar-25

4:49:26 PM

78

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:49:26 PM

17

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:49:26 PM

51

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:49:26 PM

5

1368.00

CEUX

GENMAB A/S

28-Mar-25

4:49:26 PM

18

1367.50

CEUX

GENMAB A/S

28-Mar-25

4:49:26 PM

23

1367.50

TQEX

GENMAB A/S

28-Mar-25

4:49:27 PM

13

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:49:27 PM

11

1367.50

XCSE

GENMAB A/S

28-Mar-25

4:49:45 PM

8

1367.00

AQEU

207

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:50:00 PM

11

1367.00

XCSE

GENMAB A/S

28-Mar-25

4:50:00 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:50:00 PM

8

1366.50

TQEX

GENMAB A/S

28-Mar-25

4:50:14 PM

25

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:50:14 PM

5

1366.50

TQEX

GENMAB A/S

28-Mar-25

4:50:19 PM

6

1366.50

TQEX

GENMAB A/S

28-Mar-25

4:50:19 PM

4

1366.50

TQEX

GENMAB A/S

28-Mar-25

4:50:24 PM

5

1366.50

TQEX

GENMAB A/S

28-Mar-25

4:50:47 PM

1

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:50:52 PM

1

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:50:57 PM

10

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:50:57 PM

5

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:50:57 PM

16

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:50:57 PM

1

1366.00

AQEU

GENMAB A/S

28-Mar-25

4:51:07 PM

42

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:07 PM

33

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:07 PM

24

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:07 PM

11

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:51:08 PM

2

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:08 PM

33

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:09 PM

101

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:51:09 PM

51

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:10 PM

12

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:10 PM

35

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:51:11 PM

13

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:51:11 PM

26

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:11 PM

30

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:51:12 PM

1

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:51:27 PM

45

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:51:27 PM

22

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:51:32 PM

12

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:51:32 PM

21

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:51:47 PM

70

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:52:07 PM

4

1365.00

XCSE

GENMAB A/S

28-Mar-25

4:52:10 PM

12

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:52:10 PM

35

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:52:10 PM

13

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:52:10 PM

10

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:52:10 PM

31

1366.00

CEUX

GENMAB A/S

28-Mar-25

4:52:34 PM

100

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:52:34 PM

11

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:52:34 PM

9

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:52:55 PM

5

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:52:57 PM

8

1365.00

CEUX

GENMAB A/S

28-Mar-25

4:52:57 PM

6

1365.50

CEUX

208

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:52:58 PM

53

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:52:58 PM

18

1365.00

AQEU

GENMAB A/S

28-Mar-25

4:52:59 PM

5

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:52:59 PM

5

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:02 PM

11

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:19 PM

10

1365.00

AQEU

GENMAB A/S

28-Mar-25

4:53:26 PM

36

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:27 PM

13

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:53:27 PM

3

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:53:27 PM

85

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:53:27 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:27 PM

5

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:27 PM

6

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:27 PM

42

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:27 PM

2

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:53:27 PM

3

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:53:27 PM

3

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:53:27 PM

12

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:53:27 PM

2

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:53:28 PM

12

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:28 PM

62

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:28 PM

5

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:53:28 PM

22

1365.50

TQEX

GENMAB A/S

28-Mar-25

4:53:29 PM

6

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:53:38 PM

8

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:53:41 PM

42

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:53:41 PM

42

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:53:41 PM

6

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:53:41 PM

6

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:53:41 PM

5

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:53:51 PM

42

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:53:51 PM

6

1366.50

CEUX

GENMAB A/S

28-Mar-25

4:53:55 PM

101

1366.00

XCSE

GENMAB A/S

28-Mar-25

4:53:55 PM

33

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:53:55 PM

30

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:53:55 PM

7

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:53:55 PM

4

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:53:55 PM

5

1366.00

TQEX

GENMAB A/S

28-Mar-25

4:54:02 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:02 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:03 PM

26

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:03 PM

64

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:03 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:04 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:04 PM

12

1366.50

XCSE

209

​

​


Exhibit 99.1(a)

APPENDIX Share buy-back programme - Specification for March 26 – March 28, 2025

Graphic

​

​

GENMAB A/S

28-Mar-25

4:54:04 PM

30

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:04 PM

6

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:04 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:04 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:05 PM

55

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:07 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:07 PM

53

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:07 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:14 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:14 PM

53

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:14 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:15 PM

100

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:15 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:15 PM

13

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:15 PM

53

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:19 PM

100

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:33 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:40 PM

1

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:40 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:40 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:40 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:40 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:40 PM

12

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:40 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:41 PM

11

1366.50

XCSE

GENMAB A/S

28-Mar-25

4:54:45 PM

25

1365.50

CEUX

GENMAB A/S

28-Mar-25

4:54:51 PM

20

1365.50

AQEU

GENMAB A/S

28-Mar-25

4:54:56 PM

23

1365.50

XCSE

GENMAB A/S

28-Mar-25

4:54:58 PM

21

1365.50

XCSE

​

210

​

​