NAMSW NEWAMSTERDAM PHARMA COMPANY
FollowWTS (warrant or right), issuer CIK 1936258
9 managers (9 13F filers) reported a position in NAMSW shares at 2025-12-31, 1,298,188 shares in all. 1 filer opened a position and 1 filer sold out during the quarter.
- Managers
- 9
- 13F filers
- 9
- New
- 1
- Added
- 0
- Reduced
- 3
- Sold out
- 1
- Shares held by filers
- 1,298,188
Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
No Form 4 transaction on this security in the data.
13F holders, Q4 2025
Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 500,333 | $11.5M | 0.31% | 0 | 13F-HRTimeline |
| RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P. | 333,333 | $7.67M | 0.08% | 0 | 13F-HRTimelineGroup |
| Affinity Asset Advisors, LLC | 245,000 | $5.63M | 0.4% | 0 | 13F-HRTimeline |
| Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In… | 99,999 | $2.3M | 0.18% | -1 | 13F-HRTimelineGroup |
| DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,… | 92,787 | $2.13M | 0.03% | 0 | 13F-HRTimelineGroup |
| ARISTEIA CAPITAL, L.L.C. | 15,708 | $397K | 0.01% | new | 13F-HRTimeline |
| Vestcor Inc | 9,632 | $239K | 0.01% | 0 | 13F-HRTimeline |
| CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc. | 1,000 | $25.3K | <0.01% | -250 | 13F-HRTimelineGroup |
| UBS Group AGin group UBS Group AG | 396 | $9.27K | <0.01% | -116 | 13F-HRTimelineGroup |