Werewolf Therapeutics, Inc.
HOWL- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001785530
In the last 90 days, Werewolf Therapeutics, Inc. insiders filed 0 open-market purchases and 1 sale; 45 institutions reported holding it in 13F filings for Q2 2026, worth $3.91M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Werewolf Therapeutics, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 1 filing
- 1 insider, $44.7K in total
- Insiders trading
- 1
- Net value
- −$44.7K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Werewolf Therapeutics, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Evnin Luke | Director | 0Indirect | Jul 8, 2026 | 31 |
| RA Capital Healthcare Fund LP | 10% Owner | 303,719Indirect | Jun 22, 2026 | 4 |
| Ra Capital Management, L.P. | 10% Owner | 303,719Indirect | Jun 22, 2026 | 4 |
| Kolchinsky Peter | 10% Owner | 303,719Indirect | Jun 22, 2026 | 4 |
| Shah Rajeev M. | 10% Owner | 303,719Indirect | Jun 22, 2026 | 4 |
| MPM BioVentures 2014, L.P. | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM BioVentures 2014 (B), L.P. | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM Asset Management Investors BV2014 LLC | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM BioVentures 2014 LLC | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM BioVentures 2014 GP LLC | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| Gadicke Ansbert | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM Asset Management LLC | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM BioImpact LLC | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| UBS Oncology Impact Fund L.P. | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM Oncology Innovations Fund LP | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| Oncology Impact Fund (Cayman) Management L.P. | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| MPM Oncology Innovations Fund GP LLC | Other: Former 10% Owner | 4,784,111Indirect | Dec 4, 2025 | 9 |
| Sherman Michael A. | Director | – | Jun 13, 2025 | 0 |
| Morrison Briggs | Director | – | Jun 13, 2025 | 0 |
| Lazarus Alon | Director | – | Jun 13, 2025 | 0 |
| Chatterjee Meeta | Director | – | Jun 13, 2025 | 0 |
| Singhal Anil K. | Director | – | Jun 13, 2025 | 0 |
| Atkins Michael B. | Director | – | Jun 13, 2025 | 0 |
| RA Capital Nexus Fund II, L.P. | Director, 10% Owner | 6,237,482Indirect | May 14, 2025 | 0 |
| Bloom Steven H. | Chief Business Officer | – | May 2, 2025 | 0 |
| Foley Todd | 10% Owner | 3,208,793Indirect | Apr 30, 2025 | 0 |
| Hicklin Daniel J | See Remarks | – | Jan 6, 2025 | 0 |
| Trost Timothy W. | Chief Financial Officer | – | Jan 6, 2025 | 0 |
| Isaacs Randi | Chief Medical Officer | – | Jan 6, 2025 | 0 |
| Lubman Ellen | Chief Business Officer | – | Jan 6, 2025 | 0 |
| Karunatilake Chulani | Chief Technology Officer | – | Jan 6, 2025 | 0 |
| DiRocco Derek | Director | – | May 24, 2024 | 0 |
| Seidel-Dugan Cynthia | Chief Scientific Officer | 164,888 | Jan 4, 2024 | 0 |
| Leonard Reid | Chief Operating Officer | 14,102 | Jan 9, 2023 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 29, 2026 (view filing)6:51 PM ET | May 27-29 | 2 days | Evnin LukeDirector | SSale | −141.1K | $0.4692 | −$66.2K | −18.5%622.6K after | 3 lots10b5-1 |
| Jun 3, 2026 (view filing)6:42 PM ET | Jun 1-3 | 2 days | Evnin LukeDirector | SSale | −139.8K | $0.4551 | −$63.6K | −22.5%482.8K after | 3 lots10b5-1 |
| Jun 8, 2026 (view filing)6:13 PM ET | Jun 4-8 | 4 days | Evnin LukeDirector | SSale | −105.6K | $0.4076 | −$43.0K | −21.9%377.2K after | 3 lots10b5-1 |
| Jun 10, 2026 (view filing)5:20 PM ET | Jun 9 | 1 day | Evnin LukeDirector | SSale | −76.9K | $0.37 | −$28.5K | −20.4%300.3K after | 10b5-1 |
| Jun 11, 2026 (view filing)8:13 PM ET | Jun 9-11 | 2 days | RA Capital Healthcare Fund LP and 3 others10% Owner | SSale | −678.2K | $0.3739 | −$253.6K | −65.2%361.2K after | 6 lots |
| Jun 16, 2026 (view filing)6:01 PM ET | Jun 12-16 | 4 days | RA Capital Healthcare Fund LP and 3 others10% Owner | SSale | −448.8K | $0.3871 | −$173.8K | −57.5%331.4K after | 6 lots |
| Jun 22, 2026 (view filing)6:59 PM ET | Jun 17 | 5 days | RA Capital Healthcare Fund LP and 3 others10% Owner | SSale | −416.9K | $0.35 | −$145.9K | −57.9%303.7K after | 2 lots |
| Jun 29, 2026 (view filing)7:07 PM ET | Jun 29 | Same day | Evnin LukeDirector | SSale | −157.1K | $0.30 | −$47.1K | −52.3%143.2K after | 10b5-1 |
| Jul 8, 2026 (view filing)5:34 PM ET | Jul 6-7 | 2 days | Evnin LukeDirector | SSale | −143.2K | $0.3125 | −$44.7K | −100.0%0 after | 2 lots10b5-1 |