NAMS
NewAmsterdam Pharma Company N.V.
NASDAQ · Healthcare · Biotechnology · NL
$25.40
−1.74%0
Insider buys (3m)
6
Insider sells (3m)
-$7.8M
Net value (3m)
-19.8%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Sep 3, 2026 | Gunning Robert William · officer: Vice President, Controller | A-Award | 14,000 | $25 |
| Sep 3, 2026 | Gunning Robert William · officer: Vice President, Controller | A-Award | 3,200 | $0.00 |
| Aug 25, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | Sale | 125,000 | $27 |
| Aug 25, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | M-Exempt | 125,000 | $0.00 |
| Jul 22, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | Sale | 2,915 | $32 |
| Jul 22, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | Sale | 31,885 | $31 |
| Jul 22, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | M-Exempt | 25,000 | $12 |
| Jul 22, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | M-Exempt | 80,000 | $11 |
| Jul 22, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | Sale | 70,200 | $30 |
| Jun 24, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | Sale | 300 | $31 |
| Jun 24, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | M-Exempt | 25,000 | $11 |
| Jun 24, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | M-Exempt | 15,000 | $12 |
| Jun 24, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | Sale | 39,700 | $30 |
| May 27, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | M-Exempt | 60,000 | $10 |
| May 27, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | M-Exempt | 5,000 | $11 |
| May 27, 2026 | Kooij Louise Frederika · officer: Chief Accounting Officer | Sale | 65,000 | $36 |
| Mar 12, 2026 | LANGE LOUIS G · director | Sale | 44,173 | $30 |
| Mar 12, 2026 | LANGE LOUIS G · director | Sale | 446 | $31 |
| Mar 10, 2026 | LANGE LOUIS G · director | Sale | 28,186 | $29 |
| Mar 9, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | Sale | 104,467 | $30 |
| Mar 9, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | M-Exempt | 94,124 | $0.00 |
| Mar 9, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | Sale | 94,124 | $30 |
| Mar 9, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | M-Exempt | 101,409 | $0.00 |
| Mar 9, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | Sale | 101,409 | $30 |
| Mar 9, 2026 | Kastelein Johannes Jacob Pieter · director, officer: Chief Scientific Officer | M-Exempt | 104,467 | $0.00 |
| Mar 2, 2026 | Davidson Michael H. · director, officer: Chief Executive Officer | Sale | 443,707 | $33 |
| Mar 2, 2026 | Davidson Michael H. · director, officer: Chief Executive Officer | M-Exempt | 443,707 | $0.00 |
| Feb 26, 2026 | Davidson Michael H. · director, officer: Chief Executive Officer | Sale | 10,436 | $36 |
| Feb 26, 2026 | Davidson Michael H. · director, officer: Chief Executive Officer | Sale | 17,924 | $34 |
| Feb 26, 2026 | Davidson Michael H. · director, officer: Chief Executive Officer | Sale | 165,408 | $34 |
Institutional positioning
13F filings over the trailing two quarters
New 74Increased 140Reduced 103Sold out 22
| Filer | Action | Shares | Filed |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | Increased | 18,088,902 | Aug 14, 2026 |
| FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | Unchanged | 16,943,774 | May 15, 2026 |
| Capital World Investors | Increased | 12,230,557 | Aug 12, 2026 |
| CAPITAL WORLD INVESTORS | Increased | 11,109,034 | May 13, 2026 |
| FMR LLC | Increased | 10,339,663 | Aug 13, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 9,550,191 | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 9,550,191 | Aug 14, 2026 |
| FCPM III SERVICES B.V. | Unchanged | 9,198,900 | May 15, 2026 |
| FMR LLC | Increased | 8,765,811 | May 15, 2026 |
| FCPM III SERVICES B.V. | Reduced | 8,490,353 | Aug 14, 2026 |
| BAIN CAPITAL LIFE SCIENCES INVESTORS, LLC | Unchanged | 7,306,566 | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 5,115,818 | May 15, 2026 |
| DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) | Increased | 4,264,789 | May 15, 2026 |
| DEERFIELD MANAGEMENT COMPANY, L.P. | Unchanged | 4,264,789 | Aug 14, 2026 |
| VIKING GLOBAL INVESTORS LP | Unchanged | 4,203,567 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Sep 3, 2026