Werewolf Therapeutics, Inc. (HOWL) Insider Trading
Over the last 3 months, HOWL insiders made 0 open-market buys and 24 sales, a net sale of -$800K (SEC Form 4). Over the last 6 months, 8 institutions increased and 14 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
24
Net (3m)
-$800.2K
Insider trades by month Buys Sells
Dec
Jan
Apr
May
Jun
Jul
Context3-month price +96%Institutions reducing (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jul 8, 2026 | EVNIN LUKEdirector | Sell | 107,429 | $0.31 |
| Jul 8, 2026 | EVNIN LUKEdirector | Sell | 35,770 | $0.32 |
| Jun 29, 2026 | EVNIN LUKEdirector | Sell | 157,084 | $0.30 |
| Jun 22, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 389,216 | $0.35 |
| Jun 22, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 27,695 | $0.35 |
| Jun 16, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 9,939 | $0.37 |
| Jun 16, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 159,119 | $0.40 |
| Jun 16, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 11,322 | $0.40 |
| Jun 16, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 120,216 | $0.39 |
| Jun 16, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 8,554 | $0.39 |
| Jun 16, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 139,686 | $0.37 |
| Jun 11, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 245,066 | $0.38 |
| Jun 11, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 17,437 | $0.38 |
| Jun 11, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 345,235 | $0.37 |
| Jun 11, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 24,565 | $0.37 |
| Jun 11, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 42,872 | $0.37 |
| Jun 11, 2026 | RA CAPITAL MANAGEMENT, L.P.10 percent owner | Sell | 3,051 | $0.37 |
| Jun 10, 2026 | EVNIN LUKEdirector | Sell | 76,928 | $0.37 |
| Jun 8, 2026 | EVNIN LUKEdirector | Sell | 60,547 | $0.40 |
| Jun 8, 2026 | EVNIN LUKEdirector | Sell | 20,072 | $0.44 |
| Jun 8, 2026 | EVNIN LUKEdirector | Sell | 24,946 | $0.40 |
| Jun 3, 2026 | EVNIN LUKEdirector | Sell | 29,595 | $0.45 |
| Jun 3, 2026 | EVNIN LUKEdirector | Sell | 29,749 | $0.42 |
| Jun 3, 2026 | EVNIN LUKEdirector | Sell | 80,459 | $0.47 |
| May 29, 2026 | EVNIN LUKEdirector | Sell | 80,852 | $0.48 |
| May 29, 2026 | EVNIN LUKEdirector | Sell | 27,698 | $0.46 |
| May 29, 2026 | EVNIN LUKEdirector | Sell | 32,556 | $0.45 |
| May 26, 2026 | EVNIN LUKEdirector | Sell | 87,425 | $0.45 |
| May 26, 2026 | EVNIN LUKEdirector | Sell | 67,950 | $0.47 |
| May 26, 2026 | EVNIN LUKEdirector | Sell | 36,387 | $0.42 |
Source: HOWL SEC Form 4 filings, latest Jul 8, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their HOWL positions over the last 6 months (SEC Form 13F).
Increased
8
New positions
10
Reduced
14
Sold out
48
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 6.7M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1.2M | May 15, 2026 |
| BIOIMPACT CAPITAL LLC | Reduced | 1.2M | May 15, 2026 |
| LYNX1 CAPITAL MANAGEMENT LP | Increased | 658K | May 4, 2026 |
| SPHERA FUNDS MANAGEMENT LTD. | Unchanged | 627K | May 15, 2026 |
| DC FUNDS, LP | Unchanged | 589K | May 14, 2026 |
| Squadron Capital Management LLC | New Position | 564K | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 516K | May 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 389K | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 265K | May 18, 2026 |
| VANGUARD FIDUCIARY TRUST CO | New Position | 158K | May 8, 2026 |
| MILLENNIUM MANAGEMENT LLC | Reduced | 132K | May 15, 2026 |
| STATE STREET CORP | Unchanged | 119K | May 15, 2026 |
| BLACKROCK, INC. | Reduced | 102K | May 13, 2026 |
| NORTHERN TRUST CORP | Unchanged | 87K | May 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.