Companies / Werewolf Therapeutics, Inc.

Werewolf Therapeutics, Inc.

Nasdaq: HOWLCIK 1785530WATERTOWN, MA

Financials

Revenue—
Net income$-60.82M
Total debt$32.09M
Cash$21.99M
Diluted EPS$-1.33
Shares outstanding48.6M

Ownership

48.6M shares outstanding · as of Jul 27, 2026
0.29%Insiders
Ownership
Insiders0.29%143,199
10%+ / strategic0.62%303,719
Institutions16.15%7,849,873
Public float82.93%40,302,275

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 6

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Insider% of sharesShares
RA Capital Management, L.P.10% owner
0.62%303,719
Evnin LukeDirector
0.29%143,199
Kolchinsky Peter10% owner
——
RA Capital Healthcare Fund LP10% owner
——
Shah Rajeev M.10% owner
——
Urban Michael J.VP of Finance & Corp. Contr.
——

Institutional holders 52

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HolderValue% of shares
RA Capital Management, L.P.$5.56M13.75%
Vanguard Group Inc$892.7K2.90%
MPM BioImpact LLC$883.5K2.87%
Bank of America Corp /De$466.9K1.52%
Renaissance Technologies LLC$429.8K1.06%
Lynx1 Capital Management LP$415.5K1.35%
Sphera Funds Management Ltd.$397.1K1.29%
DC Funds, LP$373.2K1.21%
Geode Capital Management, LLC$324.4K0.80%
Alyeska Investment Group, L.P.$149.3K0.48%

Activity

Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).
DateActorActionSecurityValueShares ΔPosition afterImpact
Q4 2025
as of
Bank of America Corp /De
13F manager
TrimCommon Stock$-691.7K-1.1M
-59.70%
737,550
1.52% of shares
low
Q1 2026
as of
Renaissance Technologies LLC
13F manager
TrimCommon Stock$-134.5K-162K
-23.84%
516,218
1.06% of shares
low
Q1 2026
as of
Millennium Management LLC
13F manager
TrimCommon Stock$-90.0K-108K
-45.00%
132,050
0.27% of shares
low
Q3 2024
as of
Barclays PLC
13F manager
AddCommon Stock$65.7K+31K
+130.10%
54,810
0.11% of shares
low
Q2 2024
as of
Barclays PLC
13F manager
AddCommon Stock$53.5K+22K
+1168.37%
23,820
0.05% of shares
low
Q1 2026
as of
Geode Capital Management, LLC
13F manager
AddCommon Stock$44.6K+54K
+15.96%
389,487
0.80% of shares
low
Q2 2025
as of
Barclays PLC
13F manager
TrimCommon Stock$-35.0K-32K
-70.82%
13,236
0.03% of shares
low
Q1 2025
as of
Barclays PLC
13F manager
TrimCommon Stock$-14.0K-14K
-24.08%
45,361
0.09% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Longwood Fund III GP, LLCPassive13G/A———

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
HOWLCommon StockEquity95075A107BBG00QXQ9XK4