NAMSW NEWAMSTERDAM PHARMA COMPANY
FollowWTS (warrant or right), issuer CIK 1936258
9 managers (9 13F filers) reported a position in NAMSW shares at 2026-06-30, 1,309,194 shares in all. 0 filers opened a position and 0 filers sold out during the quarter.
- Managers
- 9
- 13F filers
- 9
- New
- 0
- Added
- 2
- Reduced
- 0
- Sold out
- 0
- Shares held by filers
- 1,309,194
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, Q2 2026
Filers in the available 13F reports with a share position at 2026-06-30, 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 | $10.7M | 0.23% | 0 | 13F-HRTimeline |
| RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P. | 333,333 | $7.12M | 0.06% | 0 | 13F-HRTimelineGroup |
| Affinity Asset Advisors, LLC | 245,000 | $5.34M | 0.26% | 0 | 13F-HRTimeline |
| Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In… | 99,999 | $2.14M | 0.13% | 0 | 13F-HRTimelineGroup |
| DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,… | 92,787 | $1.98M | 0.02% | 0 | 13F-HRTimelineGroup |
| ARISTEIA CAPITAL, L.L.C. | 15,708 | $343K | 0.01% | 0 | 13F-HRTimeline |
| WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC | 14,925 | $319K | <0.01% | +12,798 | 13F-HRTimelineGroup |
| Vestcor Inc | 6,666 | $143K | <0.01% | 0 | 13F-HRTimeline |
| UBS Group AGin group UBS Group AG | 443 | $8.52K | <0.01% | +47 | 13F-HRTimelineGroup |