Institutional Ownership
Werewolf Therapeutics Inc
CUSIP 95075A107COMHOWLQ1 2026
13D / 13G Filings
34
Schedule 13D/13G on record
Beneficial Filers
12
Distinct reporting persons
Largest Stake
18.0%
Max % of class reported
Institutional Holders
45
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
34 filings · latest Feb 11, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 11, 2026 | Longwood Fund III Gp, LLC | 13G/A | 11.0% | 1.68M | SEC |
| 2 | Jan 16, 2026 | Mpm Bioventures 2014, L.P. | 13D/A | 6.9% | — | SEC |
| 3 | Dec 29, 2025 | Mpm Bioventures 2014, L.P. | 13D/A | 8.2% | — | SEC |
| 4 | Dec 3, 2025 | Mpm Bioventures 2014, L.P. | 13D/A | 10.0% | — | SEC |
| 5 | Nov 17, 2025 | Mpm Bioventures 2014, L.P. | 13D/A | 11.3% | — | SEC |
| 6 | Nov 6, 2025 | Ra Capital Management, L.P. | 13D/A | 13.8% | — | SEC |
| 7 | Nov 4, 2025 | Mpm Bioventures 2014, L.P. | 13D/A | 13.4% | — | SEC |
| 8 | Aug 14, 2025 | Pfm Health Sciences, LP | 13G/A | 0.9% | 401.1K | SEC |
| 9 | May 14, 2025 | Ra Capital Management, L.P. | 13D/A | 15.0% | — | SEC |
| 10 | Feb 14, 2025 | Pfm Health Sciences, LP | 13G/A | 6.5% | 2.91M | SEC |
24 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Werewolf Therapeutics Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Ra Capital Management, L.P. | 6.68M | $5.56M |
| 2 | Mpm Bioimpact LLC | 1.21M | $1.01M |
| 3 | Lynx1 Capital Management LP | 657.8K | $547.7K |
| 4 | Sphera Funds Management Ltd. | 626.8K | $521.9K |
| 5 | Dc Funds, LP | 589.1K | $490.5K |
| 6 | Squadron Capital Management LLC | 563.5K | $469.2K |
| 7 | Renaissance Technologies LLC | 516.2K | $429.8K |
| 8 | Geode Capital Management, LLC | 389.5K | $324.4K |
| 9 | Bank Of America Corp /De/ | 264.6K | $220.1K |
| 10 | Millennium Management LLC | 132.1K | $109.9K |