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

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
May 8, 2026RA Capital Management, L.P.
10% owner
SellCommon Stock$249.6K-352K
-5.64%
5,885,968
12.11% of shares
medium
May 8, 2026Evnin Luke
Director
SellCommon Stock$214.0K-306K
-19.37%
1,273,008
2.62% of shares
medium
Jun 17, 2026RA Capital Management, L.P.
10% owner
SellCommon Stock$136.2K-389K
-8.36%
4,268,448
8.78% of shares
medium
Jun 9, 2026RA Capital Management, L.P.
10% owner
SellCommon Stock$127.7K-345K
-6.05%
5,364,623
11.04% of shares
medium
Apr 30, 2026Evnin Luke
Director
SellCommon Stock$121.1K-168K
-8.61%
1,785,687
3.67% of shares
medium
Jun 11, 2026RA Capital Management, L.P.
10% owner
SellCommon Stock$93.1K-245K
-4.61%
5,076,685
10.45% of shares
low
Apr 28, 2026Evnin Luke
Director
SellCommon Stock$69.7K-95K
-4.53%
2,010,508
4.14% of shares
low
Jun 12, 2026RA Capital Management, L.P.
10% owner
SellCommon Stock$63.6K-159K
-3.13%
4,917,566
10.12% 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