NewAmsterdam Pharma Co N.V. SEC filings NAMSW
NewAmsterdam Pharma Co N.V. has 415 filings in SEC EDGAR's recent list, going back to Aug 4, 2022. Its latest annual report, Form ARS, was filed on May 6, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2026 | — |
| 4 | Insider transaction | Oct 2, 2026 | Sep 30, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 22, 2026 | — |
| 4 | Insider transaction | Sep 15, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 4, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 144/A | Filing | Aug 25, 2026 | — |
| 4 | Insider transaction | Aug 25, 2026 | Aug 24, 2026 |
| 144 | Notice of proposed sale | Aug 24, 2026 | — |
| 3 | Initial insider ownership | Aug 14, 2026 | Aug 10, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| 4 | Insider transaction | Jul 22, 2026 | Jul 20, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 22, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 4, 2026 | — |
| 4 | Insider transaction | May 27, 2026 | May 26, 2026 |
| 144 | Notice of proposed sale | May 26, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | May 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 6, 2026 | — |
| 4 | Insider transaction | Mar 12, 2026 | Mar 11, 2026 |
| 144 | Notice of proposed sale | Mar 11, 2026 | — |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 9, 2026 | Mar 5, 2026 |
| 144 | Notice of proposed sale | Mar 6, 2026 | — |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 4 | Insider transaction | Mar 2, 2026 | Mar 2, 2026 |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 4 | Insider transaction | Feb 26, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 24, 2026 | Feb 20, 2026 |
| 144 | Notice of proposed sale | Feb 24, 2026 | — |
| 144 | Notice of proposed sale | Feb 20, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 5, 2026 | — |
| 4 | Insider transaction | Jan 29, 2026 | Jan 27, 2026 |
| 4 | Insider transaction | Jan 27, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 144 | Notice of proposed sale | Jan 20, 2026 | — |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 7, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 7, 2026 | Jan 5, 2026 |
| 144 | Notice of proposed sale | Jan 7, 2026 | — |
| 144 | Notice of proposed sale | Jan 6, 2026 | — |
| 144 | Notice of proposed sale | Jan 5, 2026 | — |
| 144 | Notice of proposed sale | Jan 5, 2026 | — |
| 144 | Notice of proposed sale | Jan 5, 2026 | — |
| 4 | Insider transaction | Dec 29, 2025 | Dec 23, 2025 |
| 144 | Notice of proposed sale | Dec 23, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 4, 2025 | — |
| 144 | Notice of proposed sale | Dec 2, 2025 | — |
| 144 | Notice of proposed sale | Dec 2, 2025 | — |
| 144 | Notice of proposed sale | Dec 2, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 7, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Nov 4, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 30, 2025 | — |
| 4 | Insider transaction | Sep 17, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Sep 10, 2025 | Sep 9, 2025 |
| 4 | Insider transaction | Sep 10, 2025 | Sep 8, 2025 |
| 144 | Notice of proposed sale | Sep 9, 2025 | — |
| 4 | Insider transaction | Sep 5, 2025 | Sep 3, 2025 |
| 4 | Insider transaction | Sep 4, 2025 | Sep 2, 2025 |
| 144 | Notice of proposed sale | Sep 3, 2025 | — |
| 4 | Insider transaction | Aug 27, 2025 | Aug 25, 2025 |
| 144 | Notice of proposed sale | Aug 27, 2025 | — |
| 4 | Insider transaction | Aug 25, 2025 | Aug 21, 2025 |
| 144 | Notice of proposed sale | Aug 25, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 20, 2025 | — |
| 4 | Insider transaction | Aug 13, 2025 | Aug 11, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 12, 2025 | — |
| 4 | Insider transaction | Jul 17, 2025 | Jul 15, 2025 |
| 144 | Notice of proposed sale | Jul 14, 2025 | — |
| 4 | Insider transaction | Jun 26, 2025 | Jun 24, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 144 | Notice of proposed sale | Jun 18, 2025 | — |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 3 | Initial insider ownership | Jun 3, 2025 | May 27, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 144 | Notice of proposed sale | May 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | Apr 21, 2025 | Apr 14, 2025 |
| 4 | Insider transaction | Apr 17, 2025 | Apr 15, 2025 |
| 4 | Insider transaction | Apr 17, 2025 | Apr 15, 2025 |
| 3 | Initial insider ownership | Apr 17, 2025 | Apr 15, 2025 |
| 144 | Notice of proposed sale | Apr 11, 2025 | — |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| 144 | Notice of proposed sale | Mar 26, 2025 | — |
| 144 | Notice of proposed sale | Mar 26, 2025 | — |
| 4 | Insider transaction | Mar 26, 2025 | Mar 24, 2025 |
| 4 | Insider transaction | Mar 19, 2025 | Mar 17, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 4, 2025 |
| 144 | Notice of proposed sale | Mar 4, 2025 | — |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4 | Insider transaction | Jan 31, 2025 | Jan 29, 2025 |
| 4 | Insider transaction | Jan 29, 2025 | Jan 27, 2025 |
| 4 | Insider transaction | Jan 29, 2025 | Jan 27, 2025 |
| 144 | Notice of proposed sale | Jan 27, 2025 | — |
| 144 | Notice of proposed sale | Jan 27, 2025 | — |
| 144 | Notice of proposed sale | Jan 10, 2025 | — |
| 4 | Insider transaction | Jan 8, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 8, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 8, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 8, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 8, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 7, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 7, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 7, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 7, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 7, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 7, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 6, 2025 | Jan 2, 2025 |
| 4 | Insider transaction | Jan 2, 2025 | Dec 30, 2024 |
| 4 | Insider transaction | Dec 30, 2024 | Dec 26, 2024 |
| 4 | Insider transaction | Dec 26, 2024 | Dec 20, 2024 |
| 4 | Insider transaction | Dec 20, 2024 | Dec 18, 2024 |
| 4 | Insider transaction | Dec 18, 2024 | Dec 16, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 17, 2024 | — |
| 4 | Insider transaction | Dec 17, 2024 | Dec 13, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 17, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 17, 2024 | — |
| 4 | Insider transaction | Dec 16, 2024 | Dec 12, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 10, 2024 |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 4 | Insider transaction | Nov 15, 2024 | Nov 13, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 15, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 144 | Notice of proposed sale | Nov 13, 2024 | — |
| 4 | Insider transaction | Oct 11, 2024 | Oct 9, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Sep 27, 2024 |
| 144 | Notice of proposed sale | Oct 1, 2024 | — |
| 4 | Insider transaction | Sep 30, 2024 | Sep 26, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 23, 2024 | — |
| 4 | Insider transaction | Aug 22, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Jul 19, 2024 | Jul 17, 2024 |
| 3 | Initial insider ownership | Jul 19, 2024 | Jul 16, 2024 |
| 3 | Initial insider ownership | Jul 19, 2024 | Jul 16, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 20, 2024 |
| 3 | Initial insider ownership | May 3, 2024 | Apr 25, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Mar 28, 2024 | Mar 26, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Mar 26, 2024 |
| 144 | Notice of proposed sale | Mar 26, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 1, 2024 | — |
| 4 | Insider transaction | Feb 21, 2024 | Feb 13, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 21, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| 3/A | Filing | Jan 25, 2024 | Dec 29, 2023 |
| 3/A | Filing | Jan 25, 2024 | Dec 29, 2023 |
| 4 | Insider transaction | Jan 8, 2024 | Jan 4, 2024 |
| 3 | Initial insider ownership | Jan 8, 2024 | Jan 4, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 1, 2024 |
| 3 | Initial insider ownership | Jan 2, 2024 | Jan 1, 2024 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| 3 | Initial insider ownership | Dec 29, 2023 | Dec 29, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 20, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 15, 2023 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- NAMS (Nasdaq), NAMSW (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Netherlands
- Headquarters
- Narrden, Netherlands
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1936258
- Former names
- NewAmsterdam Pharma Co B.V. (until Nov 22, 2022)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.