Form 4 Tracker
NewAmsterdam Pharma Co N.V.
NAMS

11 insider filings · Latest: Jun 22, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Jun 16, 2025Jun 18 4:31 PMNAP PoolCo B.V.
Proposed Sale
303,197$19.50$5.9M

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May 15, 2025May 15 8:40 PMDouglas F Kling
Proposed Sale
298,612$18.75$5.6M

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Apr 11, 2025Apr 11 9:04 PMNAP PoolCo B.V.
Proposed Sale
1,433,193$15.12$21.7M

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Mar 26, 2025Mar 26 10:19 PMMichael H. Davidson
Proposed Sale
12,258$23.41$287.0K

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Mar 26, 2025Mar 26 10:00 PMDouglas F Kling
Proposed Sale
16,539$23.41$387.2K

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Mar 4, 2025Mar 4 11:54 PMKooij Louise Frederika
Proposed Sale
150,000$20.27$3.0M

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Jan 27, 2025Jan 27 10:09 PMDouglas F Kling
Proposed Sale
500,000$23.20$11.6M

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Jan 27, 2025Jan 27 9:52 PMMayur Somalya
Proposed Sale
200,000$23.20$4.6M

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Jan 10, 2025Jan 10 9:26 PMNAP PoolCo B.V.
Proposed Sale
1,396,241$25.31$35.3M

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Nov 13, 2024Nov 13 9:23 PMNAP PoolCo B.V.
Proposed Sale
1,553,759$24.98$38.8M

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Oct 1, 2024Oct 1 9:12 PMKooij Louise Frederika
Proposed Sale
45,000$17.29$778.0K

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Jun 22, 2026Jun 24 8:10 PMLouise Frederika KooijChief Accounting Officer
Option Exercise
40,000$11.9035,000(D)

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May 26, 2026May 27 8:30 PMLouise Frederika KooijChief Accounting Officer
Option Exercise
65,000$10.9068,134(D)

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Mar 9, 2026Mar 11 12:58 AMLouis G LangeDirector
X
44,619$11.500(D)

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Mar 9, 2026Mar 10 12:18 AMJohannes Jacob Pieter KasteleinDirector, Chief Scientific Officer
Option Exercise
101,409520,229(I)

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Mar 6, 2026Mar 10 12:18 AMJohannes Jacob Pieter KasteleinDirector, Chief Scientific Officer
Option Exercise
94,124621,638(I)

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Mar 5, 2026Mar 10 12:18 AMJohannes Jacob Pieter KasteleinDirector, Chief Scientific Officer
Option Exercise
104,467715,762(I)

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Mar 2, 2026Mar 2 11:08 PMMichael H. DavidsonDirector, Chief Executive Officer
Option Exercise
443,707239,267(D)

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Feb 26, 2026Feb 27 2:40 AMMichael H. DavidsonDirector, Chief Executive Officer
Option Exercise
183,332682,974(D)

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Feb 25, 2026Feb 27 2:40 AMMichael H. DavidsonDirector, Chief Executive Officer
Option Exercise
58,253866,306(D)

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Feb 24, 2026Feb 27 2:40 AMMichael H. DavidsonDirector, Chief Executive Officer
Option Exercise
64,708924,559(D)

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Jan 28, 2026Jan 29 9:40 PMLouise Frederika KooijChief Accounting Officer
Option Exercise
32,612$10.9073,134(D)

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Jan 27, 2026Jan 29 9:40 PMLouise Frederika KooijChief Accounting Officer
Option Exercise
39,816$10.90105,746(D)

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Jan 26, 2026Jan 27 10:38 PMLouise Frederika KooijChief Accounting Officer
Option Exercise
34,400$10.90145,562(D)

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Jan 23, 2026Jan 27 10:38 PMLouise Frederika KooijChief Accounting Officer
Option Exercise
38,172$10.90179,962(D)

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Jan 21, 2026Jan 22 10:24 PMMayur Ian SomaiyaChief Financial Officer
Option Exercise
39,784$9.26662,814(D)

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Jan 20, 2026Jan 22 10:24 PMMayur Ian SomaiyaChief Financial Officer
Option Exercise
60,216$9.26702,598(D)

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