NAMS

NewAmsterdam Pharma Co N.V.

$34.83 -0.34 (-0.97%) At close · Jul 2

Market Cap

$4.07B

116,903,979

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Insider Sentiment Score

Peer-relative 0–100 rank of how aggressively insiders accumulated over the trailing 90 days. See the full ranking.

Net buyers

-1

Net shares bought

-0.06%

Net buy value

-$2,319,850

Date	Insider	Role	Type	Shares	Price	Value	After
2026-06-22	Kooij Louise Frederika	Chief Accounting Officer	Convert	15,000	—	—	35,000
2026-06-22	Kooij Louise Frederika	Chief Accounting Officer	Sell	300	$30.73	$9,219	24,353
2026-06-22	Kooij Louise Frederika	Chief Accounting Officer	Convert	25,000	$10.90	$272,500	49,353
2026-06-22	Kooij Louise Frederika	Chief Accounting Officer	Sell	39,700	$30.20	$1,198,940	24,653
2026-06-22	Kooij Louise Frederika	Chief Accounting Officer	Convert	25,000	—	—	43,134
2026-06-22	Kooij Louise Frederika	Chief Accounting Officer	Convert	15,000	$11.90	$178,500	64,353
2026-05-26	Kooij Louise Frederika	Chief Accounting Officer	Sell	65,000	$35.69	$2,319,850	24,353
2026-05-26	Kooij Louise Frederika	Chief Accounting Officer	Convert	5,000	$10.90	$54,500	89,353
2026-05-26	Kooij Louise Frederika	Chief Accounting Officer	Convert	60,000	$10.00	$600,000	84,353
2026-05-26	Kooij Louise Frederika	Chief Accounting Officer	Convert	5,000	—	—	68,134
2026-05-26	Kooij Louise Frederika	Chief Accounting Officer	Convert	60,000	—	—	80,015
2026-03-11	LANGE LOUIS G	Director	Sell	446	$31.23	$13,929	10,360
2026-03-11	LANGE LOUIS G	Director	Sell	44,173	$30.41	$1,343,301	10,806
2026-03-09	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Convert	101,409	—	—	520,229
2026-03-09	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Convert	101,409	—	—	170,711
2026-03-09	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Sell	101,409	$30.29	$3,071,679	69,302
2026-03-09	LANGE LOUIS G	Director	Exercise	44,619	$11.50	$513,119	54,979
2026-03-09	LANGE LOUIS G	Director	Exercise	44,619	—	—	0
2026-03-06	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Convert	94,124	—	—	163,426
2026-03-06	LANGE LOUIS G	Director	Sell	28,186	$29.41	$828,950	0
2026-03-06	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Sell	94,124	$30.32	$2,853,840	69,302
2026-03-06	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Convert	94,124	—	—	621,638
2026-03-05	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Convert	104,467	—	—	715,762
2026-03-05	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Sell	104,467	$30.30	$3,165,350	69,302
2026-03-05	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Convert	104,467	—	—	173,769
2026-03-02	Davidson Michael H.	Director	Sell	443,707	$33.25	$14,753,258	174,144
2026-03-02	Davidson Michael H.	Director	Convert	443,707	—	—	617,851
2026-03-02	Davidson Michael H.	Director	Convert	443,707	—	—	239,267
2026-02-26	Davidson Michael H.	Director	Sell	165,408	$33.63	$5,562,671	477,783
2026-02-26	Davidson Michael H.	Director	Sell	17,924	$34.44	$617,303	174,144
2026-02-26	Davidson Michael H.	Director	Convert	183,332	—	—	682,974
2026-02-26	Davidson Michael H.	Director	Convert	183,332	—	—	643,191
2026-02-25	Davidson Michael H.	Director	Sell	10,436	$35.96	$375,279	461,159
2026-02-25	Davidson Michael H.	Director	Sell	46,517	$35.11	$1,633,212	471,595
2026-02-25	Davidson Michael H.	Director	Convert	58,253	—	—	518,112
2026-02-25	Davidson Michael H.	Director	Sell	1,300	$36.68	$47,684	459,859
2026-02-25	Davidson Michael H.	Director	Convert	58,253	—	—	866,306
2026-02-24	Davidson Michael H.	Director	Sell	3,161	$36.46	$115,250	459,859
2026-02-24	Davidson Michael H.	Director	Convert	64,708	—	—	524,567
2026-02-24	Davidson Michael H.	Director	Sell	61,547	$36.13	$2,223,693	463,020
2026-02-24	Davidson Michael H.	Director	Convert	64,708	—	—	924,559
2026-02-20	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Sell	14,692	$35.00	$514,220	84,289
2026-02-20	Kastelein Johannes Jacob Pieter	Director, Chief Scientific Officer	Sell	30,789	$35.46	$1,091,778	53,500
2026-01-28	Kooij Louise Frederika	Chief Accounting Officer	Convert	32,612	$10.90	$355,471	56,965
2026-01-28	Kooij Louise Frederika	Chief Accounting Officer	Convert	32,612	—	—	73,134
2026-01-28	Kooij Louise Frederika	Chief Accounting Officer	Sell	32,612	$31.80	$1,037,062	24,353
2026-01-27	Kooij Louise Frederika	Chief Accounting Officer	Convert	39,816	$10.90	$433,994	64,169
2026-01-27	Kooij Louise Frederika	Chief Accounting Officer	Sell	39,816	$32.62	$1,298,798	24,353
2026-01-27	Kooij Louise Frederika	Chief Accounting Officer	Convert	39,816	—	—	105,746
2026-01-26	Kooij Louise Frederika	Chief Accounting Officer	Sell	34,091	$32.77	$1,117,162	24,662

Showing 1–50 of 291 transactions

Key facts CIK 1936258 CUSIP N62509109 13F (30d) 4 filings 3 filers Visit website Investor relations