Werewolf Therapeutics, Inc. (HOWL) Insider Trading

Over the last 3 months, HOWL insiders made 0 open-market buys and 50 sales, a net sale of -$2.1M (SEC Form 4). Over the last 6 months, 23 institutions increased and 30 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
50
Net (3m)
-$2.1M
Insider trades by month Buys Sells
Nov
Dec
Jan
Apr
May
Jun
Context3-month price -61.4%Institutions reducing (13F)
DateInsiderTypeSharesPrice
Jun 29, 2026EVNIN LUKEdirectorSell157,084$0.30
Jun 22, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell27,695$0.35
Jun 22, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell389,216$0.35
Jun 16, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell139,686$0.37
Jun 16, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell9,939$0.37
Jun 16, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell159,119$0.40
Jun 16, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell11,322$0.40
Jun 16, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell120,216$0.39
Jun 16, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell8,554$0.39
Jun 11, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell17,437$0.38
Jun 11, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell345,235$0.37
Jun 11, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell24,565$0.37
Jun 11, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell42,872$0.37
Jun 11, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell3,051$0.37
Jun 11, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell245,066$0.38
Jun 10, 2026EVNIN LUKEdirectorSell76,928$0.37
Jun 8, 2026EVNIN LUKEdirectorSell60,547$0.40
Jun 8, 2026EVNIN LUKEdirectorSell20,072$0.44
Jun 8, 2026EVNIN LUKEdirectorSell24,946$0.40
Jun 3, 2026EVNIN LUKEdirectorSell29,595$0.45
Jun 3, 2026EVNIN LUKEdirectorSell80,459$0.47
Jun 3, 2026EVNIN LUKEdirectorSell29,749$0.42
May 29, 2026EVNIN LUKEdirectorSell27,698$0.46
May 29, 2026EVNIN LUKEdirectorSell80,852$0.48
May 29, 2026EVNIN LUKEdirectorSell32,556$0.45
May 26, 2026EVNIN LUKEdirectorSell67,950$0.47
May 26, 2026EVNIN LUKEdirectorSell36,387$0.42
May 26, 2026EVNIN LUKEdirectorSell87,425$0.45
May 20, 2026EVNIN LUKEdirectorSell22,184$0.50
May 20, 2026EVNIN LUKEdirectorSell85,895$0.43

Source: HOWL SEC Form 4 filings, latest Jun 29, 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
23
New positions
17
Reduced
30
Sold out
28
Largest moves
InstitutionActionSharesFiled
RA CAPITAL MANAGEMENT, L.P.Unchanged6.7MFeb 17, 2026
RA CAPITAL MANAGEMENT, L.P.Unchanged6.7MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position2.4MMay 15, 2026
BANK OF AMERICA CORP /DE/Reduced1.8MFeb 3, 2026
VANGUARD GROUP INCUnchanged1.4MJan 29, 2026
BIOIMPACT CAPITAL LLCReduced1.4MFeb 17, 2026
BIOIMPACT CAPITAL LLCReduced1.2MMay 15, 2026
BANK OF AMERICA CORP /DE/Reduced738KFeb 17, 2026
RENAISSANCE TECHNOLOGIES LLCIncreased678KFeb 12, 2026
LYNX1 CAPITAL MANAGEMENT LPIncreased658KMay 4, 2026
LYNX1 CAPITAL MANAGEMENT LPNew Position656KFeb 17, 2026
SPHERA FUNDS MANAGEMENT LTD.Unchanged627KMay 15, 2026
SPHERA FUNDS MANAGEMENT LTD.Unchanged627KFeb 17, 2026
DC FUNDS, LPUnchanged589KFeb 13, 2026
DC FUNDS, LPUnchanged589KMay 14, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.