Werewolf Therapeutics, Inc. (HOWL) Insider Trading

Over the last 3 months, HOWL insiders made 0 open-market buys and 31 sales, a net sale of -$1.4M (SEC Form 4). Over the last 6 months, 27 institutions increased and 29 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
31
Net (3m)
-$1.4M
Insider trades by month Buys Sells
Nov
Dec
Jan
Apr
May
Jun
Context3-month price -30.8%Institutions reducing (13F)
DateInsiderTypeSharesPrice
Jun 3, 2026EVNIN LUKEdirectorSell29,595$0.45
Jun 3, 2026EVNIN LUKEdirectorSell29,749$0.42
Jun 3, 2026EVNIN LUKEdirectorSell80,459$0.47
May 29, 2026EVNIN LUKEdirectorSell80,852$0.48
May 29, 2026EVNIN LUKEdirectorSell32,556$0.45
May 29, 2026EVNIN LUKEdirectorSell27,698$0.46
May 26, 2026EVNIN LUKEdirectorSell36,387$0.42
May 26, 2026EVNIN LUKEdirectorSell67,950$0.47
May 26, 2026EVNIN LUKEdirectorSell87,425$0.45
May 20, 2026EVNIN LUKEdirectorSell62,970$0.45
May 20, 2026EVNIN LUKEdirectorSell22,184$0.50
May 20, 2026EVNIN LUKEdirectorSell85,895$0.43
May 13, 2026EVNIN LUKEdirectorSell44,679$0.54
May 12, 2026EVNIN LUKEdirectorSell33,948$0.67
May 12, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell6,719$0.64
May 12, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell94,432$0.64
May 12, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell5,812$0.67
May 12, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell81,678$0.67
May 12, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell351,514$0.71
May 12, 2026EVNIN LUKEdirectorSell67,885$0.64
May 12, 2026EVNIN LUKEdirectorSell305,741$0.70
May 12, 2026RA CAPITAL MANAGEMENT, L.P.10 percent ownerSell25,012$0.71
May 7, 2026EVNIN LUKEdirectorSell6,860$0.69
May 7, 2026EVNIN LUKEdirectorSell79,086$0.63
May 7, 2026EVNIN LUKEdirectorSell14,635$0.66
May 4, 2026EVNIN LUKEdirectorSell58,394$0.73
May 4, 2026EVNIN LUKEdirectorSell168,262$0.72
May 4, 2026EVNIN LUKEdirectorSell47,963$0.72
Apr 29, 2026EVNIN LUKEdirectorSell56,559$0.69
Apr 29, 2026EVNIN LUKEdirectorSell53,940$0.85

Source: HOWL SEC Form 4 filings, latest Jun 3, 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
27
New positions
14
Reduced
29
Sold out
26
Largest moves
InstitutionActionSharesFiled
RA CAPITAL MANAGEMENT, L.P.Unchanged6.7MFeb 17, 2026
RA CAPITAL MANAGEMENT, L.P.Unchanged6.7MMay 15, 2026
BANK OF AMERICA CORP /DE/Reduced1.8MFeb 3, 2026
VANGUARD GROUP INCUnchanged1.4MJan 29, 2026
BIOIMPACT CAPITAL LLCReduced1.4MFeb 17, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position1.2MMay 15, 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.Unchanged627KFeb 17, 2026
SPHERA FUNDS MANAGEMENT LTD.Unchanged627KMay 15, 2026
DC FUNDS, LPUnchanged589KFeb 13, 2026
DC FUNDS, LPUnchanged589KMay 14, 2026

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