NewAmsterdam Pharma Co N.V.
Total Trades
69
Buys
10
Sells
34
Largest Trade
N/A
Insiders
9
Institutional Funds
138
Inst. Value
$1M+
Activist Filings
36
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Davidson Michael H. | CEO | EXERCISE | N/A | 444K | — | Mar 2, 2026 |
| Davidson Michael H. | CEO | SELL | $1M+ | 444K | $33.25 | Mar 2, 2026 |
| Davidson Michael H. | CEO | SELL | $1M+ | 306K | $34.53 | Feb 27, 2026 |
| Davidson Michael H. | CEO | EXERCISE | N/A | 306K | — | Feb 27, 2026 |
| Kastelein Johannes Jacob Pieter | Chief Scientific O… | SELL | $1M+ | 45K | $35.31 | Feb 24, 2026 |
| Kooij Louise Frederika | Chief Accounting O… | EXERCISE | $500K+ | 72K | $10.90 | Jan 29, 2026 |
| Kooij Louise Frederika | Chief Accounting O… | SELL | $1M+ | 72K | $32.25 | Jan 29, 2026 |
| Kooij Louise Frederika | Chief Accounting O… | EXERCISE | $500K+ | 73K | $10.90 | Jan 27, 2026 |
| Kooij Louise Frederika | Chief Accounting O… | SELL | $1M+ | 73K | $33.29 | Jan 27, 2026 |
| Somaiya Mayur Ian | CFO | EXERCISE | $500K+ | 100K | $9.26 | Jan 22, 2026 |
| Somaiya Mayur Ian | CFO | SELL | $1M+ | 100K | $32.61 | Jan 22, 2026 |
| Davidson Michael H. | CEO | GRANT | N/A | 81K | — | Jan 10, 2026 |
| Davidson Michael H. | CEO | SELL | N/A | 12K | — | Jan 10, 2026 |
| Kastelein Johannes Jacob Pieter | Chief Scientific O… | GRANT | N/A | 26K | — | Jan 7, 2026 |
| Kastelein Johannes Jacob Pieter | Chief Scientific O… | SELL | $100K–$500K | 6K | $33.25 | Jan 7, 2026 |
| Kooij Louise Frederika | Chief Accounting O… | SELL | $50K–$100K | 3K | $33.25 | Jan 7, 2026 |
| Kooij Louise Frederika | Chief Accounting O… | GRANT | N/A | 12K | — | Jan 7, 2026 |
| Somaiya Mayur Ian | CFO | SELL | $100K–$500K | 5K | $33.25 | Jan 7, 2026 |
| Somaiya Mayur Ian | CFO | GRANT | N/A | 26K | — | Jan 7, 2026 |
| Kooij Louise Frederika | Chief Accounting O… | EXERCISE | $1M+ | 145K | $10.03 | Dec 29, 2025 |
| Kooij Louise Frederika | Chief Accounting O… | SELL | $1M+ | 145K | $35.84 | Dec 29, 2025 |
| Topper James N | Director | BUY | $15K–$50K | 660 | $23.70 | Sep 17, 2025 |
| Kooij Louise Frederika | Chief Accounting O… | SELL | $1M+ | 150K | $25.83 | Sep 10, 2025 |
| Kooij Louise Frederika | Chief Accounting O… | EXERCISE | $1M+ | 150K | $10.00 | Sep 10, 2025 |
| Topper James N | Director | BUY | $15K–$50K | 1K | $24.99 | Sep 10, 2025 |
| Kooij Louise Frederika | Chief Accounting O… | SELL | $100K–$500K | 18K | $25.09 | Sep 5, 2025 |
| Kooij Louise Frederika | Chief Accounting O… | SELL | $100K–$500K | 8K | $24.86 | Aug 27, 2025 |
| Kastelein Johannes Jacob Pieter | Chief Scientific O… | SELL | $1M+ | 100K | $24.72 | Aug 25, 2025 |
| Kling Douglas F | COO | SELL | $1M+ | 99K | $21.26 | Jul 17, 2025 |
| Kling Douglas F | COO | EXERCISE | $1M+ | 99K | $10.90 | Jul 17, 2025 |
| Topper James N | Director | BUY | $50K–$100K | 4K | $18.38 | Jun 26, 2025 |
| Kling Douglas F | COO | SELL | $1M+ | 100K | $19.29 | Jun 18, 2025 |
| Kling Douglas F | COO | EXERCISE | $1M+ | 100K | $10.20 | Jun 18, 2025 |
| Topper James N | Director | BUY | $100K–$500K | 9K | $19.50 | Jun 18, 2025 |
| Kling Douglas F | COO | SELL | N/A | 100K | — | May 19, 2025 |
| Kling Douglas F | COO | EXERCISE | $1M+ | 100K | $10.00 | May 19, 2025 |
| Kling Douglas F | COO | SELL | N/A | 100K | — | Apr 17, 2025 |
| Kling Douglas F | COO | EXERCISE | $1M+ | 100K | $10.00 | Apr 17, 2025 |
| Topper James N | Director | BUY | $15K–$50K | 1K | $22.49 | Mar 28, 2025 |
| Kling Douglas F | COO | EXERCISE | N/A | 17K | — | Mar 28, 2025 |
| Kling Douglas F | COO | SELL | N/A | 17K | — | Mar 28, 2025 |
| Davidson Michael H. | CEO | SELL | N/A | 12K | — | Mar 28, 2025 |
| Davidson Michael H. | CEO | EXERCISE | N/A | 38K | — | Mar 28, 2025 |
| Davidson Michael H. | CEO | GRANT | N/A | 31K | — | Mar 28, 2025 |
| Kling Douglas F | COO | SELL | N/A | 100K | — | Mar 19, 2025 |
| Kling Douglas F | COO | EXERCISE | $100K–$500K | 100K | $1.19 | Mar 19, 2025 |
| Kling Douglas F | COO | SELL | N/A | 100K | — | Feb 20, 2025 |
| Kling Douglas F | COO | EXERCISE | N/A | 100K | — | Feb 20, 2025 |
| Kling Douglas F | COO | SELL | N/A | 70K | — | Jan 31, 2025 |
| Kling Douglas F | COO | EXERCISE | N/A | 70K | — | Jan 31, 2025 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 138 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 16.9M | $1M+ | SH |
| Capital World Investors | 10.0M | $1M+ | SH |
| RA CAPITAL MANAGEMENT, L.P. | 9.6M | $1M+ | SH |
| Bain Capital Life Sciences Investors, LLC | 7.3M | $1M+ | SH |
| VIKING GLOBAL INVESTORS LP | 4.2M | $1M+ | SH |
| Duquesne Family Office LLC | 3.1M | $1M+ | SH |
| JENNISON ASSOCIATES LLC | 3.0M | $1M+ | SH |
| Medicxi Ventures Management (Jersey) Ltd | 2.9M | $1M+ | SH |
| Capital International Investors | 2.1M | $1M+ | SH |
| MAVERICK CAPITAL LTD | 1.9M | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 1.3M | $1M+ | SH |
| Cormorant Asset Management, LP | 1.0M | $1M+ | SH |
| First Turn Management, LLC | 893K | $1M+ | SH |
| JPMORGAN CHASE & CO | 830K | $1M+ | SH |
| TimesSquare Capital Management, LLC | 822K | $1M+ | SH |
| Pictet Asset Management Holding SA | 746K | $1M+ | SH |
| Aberdeen Group plc | 729K | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 603K | $1M+ | SH |
| Decheng Capital LLC | 592K | $1M+ | SH |
| Ensign Peak Advisors, Inc | 550K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 17, 2026
3.7%
4.2M shares
SC 13G · Feb 5, 2026
5.7%
6.4M shares
SC 13D/A · Dec 4, 2025
4.7%
5.4M shares
SC 13G/A · Nov 14, 2025
8.7%
9.8M shares
SC 13D/A · Nov 8, 2025
10.0%
11.4M shares
SC 13D/A · Nov 4, 2025
6.5%
7.3M shares
Forbion Capital Fund IV Cooperatief U.A.
SC 13D/A · Sep 30, 2025
4.1%
4.7M shares
SC 13D/A · Aug 20, 2025
6.5%
7.3M shares
SC 13G/A · Aug 13, 2025
7.5%
8.4M shares
Forbion Capital Fund IV Cooperatief U.A.
SC 13D/A · Aug 12, 2025
5.3%
5.9M shares
SC 13G/A · May 15, 2025
9.9%
11.1M shares
SC 13G · May 13, 2025
6.2%
6.8M shares
SC 13G/A · Feb 14, 2025
9.9%
10.9M shares
SC 13G/A · Feb 14, 2025
6.5%
7.0M shares
BCLS Fund III Investments, LP 2
SC 13D/A · Dec 17, 2024
10.0%
10.7M shares
Forbion Capital Fund IV Coöperatief U.A.
SC 13D/A · Dec 17, 2024
5.8%
6.2M shares
Frazier Lifesciences Sponsor LLC
SC 13D/A · Dec 17, 2024
3.7%
4.0M shares
I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Forbion Capital Fund IV Coöperatief U.A. 2
SC 13D/A · Nov 15, 2024
7.2%
662.9M shares
SC 13G/A · Nov 14, 2024
10.0%
9.1M shares
SAGA INVESTMENTS COÖPERATIEF U.A.
SC 13G/A · Aug 23, 2024
0.0%
0 shares
BCLS Fund III Investments, LP 2
SC 13D/A · Mar 1, 2024
6.0%
5.4M shares
Frazier Lifesciences Sponsor LLC 2.
SC 13D/A · Feb 21, 2024
4.5%
4.0M shares
SC 13G/A · Feb 14, 2024
9.9%
8.2M shares
SC 13G/A · Feb 14, 2024
9.7%
8.0M shares
Morningside Venture Investments Limited
SC 13G/A · Sep 20, 2023
4.9%
4.1M shares
Frazier Lifesciences Sponsor LLC
SC 13D/A · Aug 15, 2023
4.8%
4.0M shares
SC 13G/A · Aug 1, 2023
11.3%
9.3M shares
Forbion Capital Fund IV Coöperatief U.A.
SC 13D/A · Jul 7, 2023
8.1%
6.6M shares
Forbion Capital Fund IV Coöperatief U.A.
SC 13D · Jul 7, 2023
8.1%
6.6M shares
SC 13G · Jun 20, 2023
8.0%
6.5M shares
SC 13D/A · Jun 13, 2023
6.6%
5.4M shares
Frazier Lifesciences Sponsor LLC
SC 13D/A · Jun 9, 2023
4.8%
4.0M shares
SC 13G · Dec 2, 2022
5.3%
4.3M shares
SC 13D · Dec 2, 2022
4.9%
4.0M shares
SAGA INVESTMENTS COÖPERATIEF U.A.
SC 13G · Dec 2, 2022
0.0%
4.9M shares
Frazier Lifesciences Sponsor LLC
SC 13D · Dec 1, 2022
4.9%
4.0M shares