NewAmsterdam Pharma Co N.V.
NAMS
11 insider filings · Latest: Jun 22, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Jan 27, 2026 | Jan 29 9:40 PM | Louise Frederika KooijChief Accounting Officer | Sale | 39,816 | $32.62 | $1.3M | 24,353(D) | View → |
| Jan 26, 2026 | Jan 27 10:38 PM | Louise Frederika KooijChief Accounting Officer | Sale | 34,400 | $32.78 | $1.1M | 24,353(D) | View → |
| Jan 23, 2026 | Jan 27 10:38 PM | Louise Frederika KooijChief Accounting Officer | Sale | 38,172 | $33.75 | $1.3M | 24,353(D) | View → |
| Jan 21, 2026 | Jan 22 10:24 PM | Mayur Ian SomaiyaChief Financial Officer | Sale | 39,784 | $33.59 | $1.3M | 58,382(D) | View → |
| Jan 20, 2026 | Jan 22 10:24 PM | Mayur Ian SomaiyaChief Financial Officer | Sale | 60,216 | $31.96 | $1.9M | 58,382(D) | View → |
| Jan 20, 2026 | Jan 20 9:17 PM | Mayur Somaiya | Proposed Sale | 200,000 | $31.65 | $6.3M | — | View → |
| Jan 7, 2026 | Jan 7 6:19 PM | Michael Davidson | Proposed Sale | 11,582 | $35.48 | $410.9K | — | View → |
| Jan 6, 2026 | Jan 6 9:29 PM | Douglas F Kling | Proposed Sale | 300,000 | $33.48 | $10.0M | — | View → |
| Jan 5, 2026 | Jan 5 8:18 PM | Louise Kooij | Proposed Sale | 2,647 | $33.25 | $88.0K | — | View → |
| Jan 5, 2026 | Jan 5 8:04 PM | Johannes Kastelein | Proposed Sale | 6,000 | $33.25 | $199.5K | — | View → |
| Jan 5, 2026 | Jan 5 8:03 PM | Mayur Ian Somaiya | Proposed Sale | 5,118 | $33.25 | $170.2K | — | View → |
| Dec 23, 2025 | Dec 23 10:31 PM | Louise Kooij | Proposed Sale | 290,000 | $36.49 | $10.6M | — | View → |
| Dec 2, 2025 | Dec 3 2:25 AM | Bain Capital Life Sciences Fund II, L.P. | Proposed Sale | 267,429 | $38.33 | $10.3M | — | View → |
| 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 → |
Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| 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 → |