NAMSW NEWAMSTERDAM PHARMA COMPANY
FollowWTS (warrant or right), issuer CIK 1936258
9 managers (9 13F filers) reported a position in NAMSW shares at 2026-03-31, 1,296,349 shares in all. 1 filer opened a position and 0 filers sold out during the quarter.
- Managers
- 9
- 13F filers
- 9
- New
- 1
- Added
- 0
- Reduced
- 1
- Sold out
- 0
- Shares held by filers
- 1,296,349
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, Q1 2026
Filers in the available 13F reports with a share position at 2026-03-31, 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 | $10M | 0.26% | 0 | 13F-HRTimeline |
| RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P. | 333,333 | $6.68M | 0.07% | 0 | 13F-HRTimelineGroup |
| Affinity Asset Advisors, LLC | 245,000 | $4.91M | 0.29% | 0 | 13F-HRTimeline |
| Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In… | 99,999 | $2M | 0.18% | 0 | 13F-HRTimelineGroup |
| DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,… | 92,787 | $1.86M | 0.02% | 0 | 13F-HRTimelineGroup |
| ARISTEIA CAPITAL, L.L.C. | 15,708 | $343K | 0.01% | 0 | 13F-HRTimeline |
| Vestcor Inc | 6,666 | $131K | <0.01% | -2,966 | 13F-HRTimeline |
| WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC | 2,127 | $42.6K | <0.01% | new | 13F-HRTimelineGroup |
| UBS Group AGin group UBS Group AG | 396 | $7.94K | <0.01% | 0 | 13F-HRTimelineGroup |