NewAmsterdam Pharma Company NV
NAMS · NASDAQ
$21.50+$1.03 (+5.03%)TodayMarket closed ·
Prev close $20.47
Who owns NAMS
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 5.3% of NAMS’s shares.
- Frazier Healthcare Partners0.9%
- Glazer Capital, LLC0.7%
- Alyeska Investment Group, L.P.0.6%
- D. E. Shaw & Co., L.P.0.6%
- Next 6 largest institutions2.5%
- All other shareholders94.7%
| Holder | Shares | % of shares |
|---|---|---|
| Frazier Healthcare Partners | 1.00M | 0.86% |
| Glazer Capital, LLC | 812.68K | 0.70% |
| Alyeska Investment Group, L.P. | 753.49K | 0.64% |
| D. E. Shaw & Co., L.P. | 706.84K | 0.60% |
| Millennium Management LLC | 679.39K | 0.58% |
| EcoR1 Capital, LLC | 587.62K | 0.50% |
| Goldman Sachs & Company, Inc. | 501.29K | 0.43% |
| MYDA Advisors LLC | 410.00K | 0.35% |
| Governors Lane LP | 350.00K | 0.30% |
| Radcliffe Capital Management, L.P. | 338.98K | 0.29% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| First Trust Merger Arbitrage Fund | 123.74K | 0.11% |
| Saba Capital Income & Opportunities Fund | 19.12K | 0.02% |
| Fidelity NASDAQ Composite Index Fund | 8.91K | 0.01% |
| Morgan Creek - Exos Active SPAC Arbitrage ETF | 2.48K | 0.00% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders bought $226.50K (1 trade) and sold $11.38M (9 trades) of NAMS on the open market.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Kastelein Johannes Jacob Pieter | Option exercise | 50.25K | — |
| Kastelein Johannes Jacob Pieter | Sale | 50.25K | $1.26M |
| Kastelein Johannes Jacob Pieter | Option exercise | 50.25K | — |
| Davidson Michael H. | Buy | 10.00K | $226.50K |
| Smither John W | Sale | 1.60K | $40.51K |
| Gunning Robert William | Award | 14.00K | — |
| Gunning Robert William | Award | 3.20K | — |
| Kastelein Johannes Jacob Pieter | Option exercise | 125.00K | — |
| Kastelein Johannes Jacob Pieter | Sale | 125.00K | $3.36M |
| Kastelein Johannes Jacob Pieter | Option exercise | 125.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 19.05M
- Days to cover
- 9.39
- % of shares outstanding
- 16.29%
- Average daily volume
- 2.03M
- Change since last report
- +21.6%
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