NewAmsterdam Pharma Co N.V.
NAMS
17 insider filings · Latest: Sep 30, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Dec 2, 2025 | Dec 3 2:23 AM | BCLS II Investco, LP | Proposed Sale | 4,500,000 | $38.33 | $172.5M | — | View → |
| Dec 2, 2025 | Dec 3 2:22 AM | BCIP Life Sciences Associates, LP | Proposed Sale | 32,571 | $38.33 | $1.2M | — | View → |
| Sep 9, 2025 | Sep 9 3:57 PM | Louise Kooij | Proposed Sale | 150,000 | $25.20 | $3.8M | — | View → |
| Sep 3, 2025 | Sep 3 12:21 PM | Kooij Louise Frederika | Proposed Sale | 18,073 | $24.05 | $434.7K | — | View → |
| Aug 25, 2025 | Aug 27 8:57 PM | Kooij Louise Frederika | Proposed Sale | 8,269 | $25.19 | $208.3K | — | View → |
| Aug 21, 2025 | Aug 25 9:03 PM | Kastelein Johannes Jacob Pieter | Proposed Sale | 100,000 | $25.00 | $2.5M | — | View → |
| Jul 14, 2025 | Jul 14 8:12 PM | NAP PoolCo B.V. | Proposed Sale | 1,433,193 | $21.56 | $30.9M | — | View → |
| Jun 16, 2025 | Jun 18 4:31 PM | NAP PoolCo B.V. | Proposed Sale | 303,197 | $19.50 | $5.9M | — | View → |
| May 15, 2025 | May 15 8:40 PM | Douglas F Kling | Proposed Sale | 298,612 | $18.75 | $5.6M | — | View → |
| Apr 11, 2025 | Apr 11 9:04 PM | NAP PoolCo B.V. | Proposed Sale | 1,433,193 | $15.12 | $21.7M | — | View → |
| Mar 26, 2025 | Mar 26 10:19 PM | Michael H. Davidson | Proposed Sale | 12,258 | $23.41 | $287.0K | — | View → |
| Mar 26, 2025 | Mar 26 10:00 PM | Douglas F Kling | Proposed Sale | 16,539 | $23.41 | $387.2K | — | View → |
| Mar 4, 2025 | Mar 4 11:54 PM | Kooij Louise Frederika | Proposed Sale | 150,000 | $20.27 | $3.0M | — | View → |
| Jan 27, 2025 | Jan 27 10:09 PM | Douglas F Kling | Proposed Sale | 500,000 | $23.20 | $11.6M | — | View → |
| Jan 27, 2025 | Jan 27 9:52 PM | Mayur Somalya | Proposed Sale | 200,000 | $23.20 | $4.6M | — | View → |
| Jan 10, 2025 | Jan 10 9:26 PM | NAP PoolCo B.V. | Proposed Sale | 1,396,241 | $25.31 | $35.3M | — | View → |
| Nov 13, 2024 | Nov 13 9:23 PM | NAP PoolCo B.V. | Proposed Sale | 1,553,759 | $24.98 | $38.8M | — | View → |
| Oct 1, 2024 | Oct 1 9:12 PM | Kooij Louise Frederika | Proposed Sale | 45,000 | $17.29 | $778.0K | — | View → |
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Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | Oct 2 8:30 PM | Johannes Jacob Pieter KasteleinDirector, Chief Scientific Officer | Option Exercise | 50,246 | — | 344,983(I) | View → |
| Sep 1, 2026 | Sep 3 8:30 PM | Robert William GunningVice President, Controller | Grant/Award | 14,000 | $24.92 | 14,000(D) | View → |
| Aug 24, 2026 | Aug 25 8:30 PM | Johannes Jacob Pieter KasteleinDirector, Chief Scientific Officer | Option Exercise | 125,000 | — | 395,229(I) | View → |
| Jul 20, 2026 | Jul 22 8:05 PM | Louise Frederika KooijChief Accounting Officer | Option Exercise | 105,000 | $11.90 | 70,494(D) | View → |
| Jun 22, 2026 | Jun 24 8:10 PM | Louise Frederika KooijChief Accounting Officer | Option Exercise | 40,000 | $11.90 | 35,000(D) | View → |
| May 26, 2026 | May 27 8:30 PM | Louise Frederika KooijChief Accounting Officer | Option Exercise | 65,000 | $10.90 | 68,134(D) | View → |
| Mar 9, 2026 | Mar 11 12:58 AM | Louis G LangeDirector | X | 44,619 | $11.50 | 0(D) | View → |
| Mar 9, 2026 | Mar 10 12:18 AM | Johannes Jacob Pieter KasteleinDirector, Chief Scientific Officer | Option Exercise | 101,409 | — | 520,229(I) | View → |
| Mar 6, 2026 | Mar 10 12:18 AM | Johannes Jacob Pieter KasteleinDirector, Chief Scientific Officer | Option Exercise | 94,124 | — | 621,638(I) | View → |
| Mar 5, 2026 | Mar 10 12:18 AM | Johannes Jacob Pieter KasteleinDirector, Chief Scientific Officer | Option Exercise | 104,467 | — | 715,762(I) | View → |
| Mar 2, 2026 | Mar 2 11:08 PM | Michael H. DavidsonDirector, Chief Executive Officer | Option Exercise | 443,707 | — | 239,267(D) | View → |
| Feb 26, 2026 | Feb 27 2:40 AM | Michael H. DavidsonDirector, Chief Executive Officer | Option Exercise | 183,332 | — | 682,974(D) | View → |
| Feb 25, 2026 | Feb 27 2:40 AM | Michael H. DavidsonDirector, Chief Executive Officer | Option Exercise | 58,253 | — | 866,306(D) | View → |
| Feb 24, 2026 | Feb 27 2:40 AM | Michael H. DavidsonDirector, Chief Executive Officer | Option Exercise | 64,708 | — | 924,559(D) | View → |
| Jan 28, 2026 | Jan 29 9:40 PM | Louise Frederika KooijChief Accounting Officer | Option Exercise | 32,612 | $10.90 | 73,134(D) | View → |
| Jan 27, 2026 | Jan 29 9:40 PM | Louise Frederika KooijChief Accounting Officer | Option Exercise | 39,816 | $10.90 | 105,746(D) | View → |
| Jan 26, 2026 | Jan 27 10:38 PM | Louise Frederika KooijChief Accounting Officer | Option Exercise | 34,400 | $10.90 | 145,562(D) | View → |
| Jan 23, 2026 | Jan 27 10:38 PM | Louise Frederika KooijChief Accounting Officer | Option Exercise | 38,172 | $10.90 | 179,962(D) | View → |
| Jan 21, 2026 | Jan 22 10:24 PM | Mayur Ian SomaiyaChief Financial Officer | Option Exercise | 39,784 | $9.26 | 662,814(D) | View → |
| Jan 20, 2026 | Jan 22 10:24 PM | Mayur Ian SomaiyaChief Financial Officer | Option Exercise | 60,216 | $9.26 | 702,598(D) | View → |