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6-K

Turkcell Iletisim Hizmetleri A S (TKC)

6-K 2025-03-21 For: 2025-03-21
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Added on April 08, 2026

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

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2025

Commission File Number: 001-15092

TURKCELL ILETISIM HIZMETLERI A.S.

(Translation of registrant’s name into English)

Aydınevler Mahallesi İnönü Caddesi No:20

Küçükyalı Ofispark

34854 Maltepe

Istanbul, Türkiye

(Address of Principal Executive Offices)

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

x Form 20-F  ¨ Form 40-F

Enclosure: A press release dated March 21, 2025, announcing the share buy-back transactions.

Istanbul, March 21, 2025


Announcement Regarding the Share Buy-back Transactions

Within the scope of our Board of Directors' share buy-back decisions on July 27, 2016 and the following dates, our Company purchased a total of 568,296 shares at an average price level of TRY 87.99 totaling TRY 50,005,210 on March 21, 2025.

Within the scope of the relevant decisions, Company repurchased a total of 21,463,501 shares amounting to TRY 563,834,214 from August 24, 2016 until the date of this announcement. With these transactions, the ratio of our shares in Company's capital has reached 0.98%.

The details of the buy-back transactions

Code of Share Subject to<br> Buy-back Transaction Date Nominal Value of<br> Shares Subject to<br> Transaction (TRY) Ratio to Capital<br><br> (%) Transaction Price<br> (TRY / Unit) Privileges. If Any, Associated<br> with These Shares
Group B, TCELL, TRATCELL91M1 24.08.2016 486,575 0.022 9.82 -
Group B, TCELL, TRATCELL91M1 29.08.2016 315,000 0.014 9.86 -
Group B, TCELL, TRATCELL91M1 31.08.2016 500,000 0.023 9.98 -
Group B, TCELL, TRATCELL91M1 01.09.2016 10,000 0 9.99 -
Group B, TCELL, TRATCELL91M1 09.09.2016 361,597 0.016 9.87 -
Group B, TCELL, TRATCELL91M1 16.09.2016 400,000 0.018 9.77 -
Group B, TCELL, TRATCELL91M1 30.09.2016 205,000 0.009 9.74 -
Group B, TCELL, TRATCELL91M1 04.10.2016 155,000 0.007 9.76 -
Group B, TCELL, TRATCELL91M1 04.11.2016 310,000 0.014 9.59 -
Group B, TCELL, TRATCELL91M1 09.11.2016 104,000 0.005 9.59 -
Group B, TCELL, TRATCELL91M1 14.11.2016 105,000 0.005 9.46 -
Group B, TCELL, TRATCELL91M1 29.11.2016 293,640 0.013 9.36 -
Group B, TCELL, TRATCELL91M1 30.11.2016 500,000 0.023 9.21 -
Group B, TCELL, TRATCELL91M1 01.12.2016 200,000 0.009 8.94 -
Group B, TCELL, TRATCELL91M1 08.12.2016 109,500 0.005 9.09 -
Group B, TCELL, TRATCELL91M1 22.12.2016 106,000 0.005 9.4 -
Group B, TCELL, TRATCELL91M1 26.12.2016 180,751 0.008 9.44 -
Group B, TCELL, TRATCELL91M1 27.12.2016 159,000 0.007 9.43 -
Group B, TCELL, TRATCELL91M1 28.12.2016 155,000 0.007 9.46 -
Group B, TCELL, TRATCELL91M1 30.12.2016 2,159,500 0.098 9.67 -
Group B, TCELL, TRATCELL91M1 12.07.2018 453,950 0.021 11.01 -
Group B, TCELL, TRATCELL91M1 12.07.2018 904,029 0.041 11.12 -
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Group B, TCELL, TRATCELL91M1 13.07.2018 117,000 0.005 10.98 -
Group B, TCELL, TRATCELL91M1 16.07.2018 629,500 0.029 11.12 -
Group B, TCELL, TRATCELL91M1 24.07.2018 456,000 0.021 11.40 -
Group B, TCELL, TRATCELL91M1 15.08.2018 923,000 0.042 10.83 -
Group B, TCELL, TRATCELL91M1 16.08.2018 1,458,400 0.066 10.28 -
Group B, TCELL, TRATCELL91M1 05.10.2018 924,000 0.042 10.82 -
Group B, TCELL, TRATCELL91M1 14.12.2018 1,403,000 0.064 12.15 -
Group B, TCELL, TRATCELL91M1 19.12.2018 332,000 0.015 12.18 -
Group B, TCELL, TRATCELL91M1 27.12.2018 833,325 0.038 12.00 -
Group B, TCELL, TRATCELL91M1 31.12.2018 827,750 0.038 12.08 -
Group B, TCELL, TRATCELL91M1 17.03.2020 406,290 0.018 12.31 -
Group B, TCELL, TRATCELL91M1 19.03.2020 410,000 0.019 12.18 -
Group B, TCELL, TRATCELL91M1 17.02.2023 1,000,000 0.045 33.88 -
Group B, TCELL, TRATCELL91M1 05.08.2024 1,398 0.000 98.05 -
Group B, TCELL, TRATCELL91M1 21.08.2024 3,000,000 0.136 99.87 -
Group B, TCELL, TRATCELL91M1 21.03.2025 568,296 0.026 87.99 -

For more information:

Turkcell Investor Relations

investor.relations@turkcell.com.tr

Tel: + 90 212 313 1888

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SIGNATURES

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

TURKCELL ILETISIM HIZMETLERI A.S.
Date: March 21, 2025 By: /s/ Özlem Yardım
Name: Özlem Yardım
Title: Investor Relations Corporate Finance Director
TURKCELL ILETISIM HIZMETLERI A.S.
--- --- --- ---
Date: March 21, 2025 By: /s/ Kamil Kalyon
Name: Kamil Kalyon
Title: Chief Financial Officer