| 04/24/2026 3:30 PM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 04/20/2026 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form PRE 14A | |
| 03/12/2026 3:25 PM | LANGE LOUIS G (1238401) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 03/10/2026 7:58 PM | LANGE LOUIS G (1238401) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 03/09/2026 7:18 PM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 03/06/2026 4:52 PM | LANGE LOUIS G (1238401) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 03/05/2026 3:14 PM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 03/02/2026 5:08 PM | Davidson Michael H. (1573785) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 03/02/2026 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 02/26/2026 8:40 PM | Davidson Michael H. (1573785) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 02/24/2026 3:40 PM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
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| 02/20/2026 6:51 AM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 02/18/2026 6:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 02/18/2026 6:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 10-K Annual report pursuant to Section 13 or 15(d) | |
| 02/18/2026 6:07 AM | NewAmsterdam Pharma (1936258) Filer | Form S-8 Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans | |
| 02/05/2026 12:31 PM | NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13G | |
| 01/27/2026 4:38 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/22/2026 4:24 PM | NewAmsterdam Pharma (1936258) Issuer Somaiya Mayur Ian (1760303) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 6:33 PM | LANGE LOUIS G (1238401) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 6:33 PM | McKenna Mark C. (1749623) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 6:33 PM | NewAmsterdam Pharma (1936258) Issuer Smither John W (1559583) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 6:34 PM | Lewis William (1402051) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 6:34 PM | Davidson Michael H. (1573785) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 6:34 PM | Gulfo Adele M. (1647102) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 6:34 PM | NewAmsterdam Pharma (1936258) Issuer van der Kamp Hilde Johanna (2000565) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 01/07/2026 5:27 PM | NewAmsterdam Pharma (1936258) Issuer Somaiya Mayur Ian (1760303) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/07/2026 5:27 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/07/2026 5:31 PM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/07/2026 12:19 PM | Davidson Michael H. (1573785) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 01/06/2026 3:29 PM | Kling Douglas F (1699022) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 01/05/2026 2:03 PM | NewAmsterdam Pharma (1936258) Subject Somaiya Mayur Ian (1760303) Reporting | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 01/05/2026 2:04 PM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 01/05/2026 2:18 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 12/29/2025 4:14 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 12/23/2025 4:31 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 12/04/2025 3:30 PM | BCLS II Investco, LP (1818893) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13D/A | |
| 12/02/2025 8:25 PM | Bain Capital Life Sciences Fund II, L.P. (1773187) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 12/02/2025 8:22 PM | BCIP Life Sciences Associates, LP (1702921) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 12/02/2025 8:23 PM | BCLS II Investco, LP (1818893) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 11/13/2025 6:06 PM | Capital World Investors (1422849) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13G/A | |
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| 11/07/2025 6:19 PM | BCLS II Investco, LP (1818893) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13D/A | |
| 11/05/2025 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 11/05/2025 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
| 11/04/2025 4:23 PM | Frazier Life Sciences X, L.P. (1790879) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13D/A | |
| 09/30/2025 3:47 PM | Forbion Capital Fund IV Cooperatief U.A. (1823747) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13D/A | |
| 09/17/2025 4:22 PM | NewAmsterdam Pharma (1936258) Issuer Topper James N (1341382) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/10/2025 4:39 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/10/2025 4:19 PM | NewAmsterdam Pharma (1936258) Issuer Topper James N (1341382) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/09/2025 10:57 AM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 09/05/2025 4:06 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/04/2025 4:43 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 09/03/2025 7:21 AM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 09/02/2025 7:30 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 08/27/2025 3:57 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 08/27/2025 4:08 PM | Kooij Louise Frederika (2004379) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 08/25/2025 4:03 PM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 08/25/2025 4:04 PM | Kastelein Johannes Jacob Pieter (2000389) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 08/20/2025 4:28 PM | Frazier Life Sciences X, L.P. (1790879) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13D/A | |
| 08/18/2025 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 08/13/2025 11:56 AM | Capital World Investors (1422849) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13G/A | |
| 08/12/2025 3:30 PM | Forbion Capital Fund IV Cooperatief U.A. (1823747) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13D/A | |
| 08/06/2025 6:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
| 08/06/2025 6:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 07/30/2025 7:25 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 07/14/2025 3:12 PM | NAP PoolCo B.V. (2018321) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 07/11/2025 3:25 PM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 06/26/2025 6:41 PM | NewAmsterdam Pharma (1936258) Issuer Topper James N (1341382) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/18/2025 3:42 PM | NewAmsterdam Pharma (1936258) Issuer Topper James N (1341382) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/18/2025 3:50 PM | Kling Douglas F (1699022) Reporting NewAmsterdam Pharma (1936258) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/18/2025 11:31 AM | NAP PoolCo B.V. (2018321) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 06/11/2025 8:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 06/09/2025 6:28 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 06/06/2025 3:35 PM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 05/15/2025 3:40 PM | Kling Douglas F (1699022) Reporting NewAmsterdam Pharma (1936258) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 05/13/2025 10:44 AM | Capital World Investors (1422849) Filed by NewAmsterdam Pharma (1936258) Subject | Form SCHEDULE 13G | |
| 05/08/2025 3:28 PM | NewAmsterdam Pharma (1936258) Filer | Form ARS | |
| 05/08/2025 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 05/08/2025 7:00 AM | NewAmsterdam Pharma (1936258) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
| 05/07/2025 6:36 AM | NewAmsterdam Pharma (1936258) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |