Werewolf Therapeutics Inc

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Werewolf Therapeutics Inc
TickerHOWL
CIK #0001785530
CUSIP95075A107
SectorLife Sciences - Pharmaceutical Preparations
Address1030 Massachusetts Avenue Suite 210, Cambridge, MA 02138
Source [EDGAR]
CIK Filing 2011 - 2025
[0001785530] 10-K
[0001785530] 10-Q
[0001785530] 3
[0001785530] 4
[0001785530] 8-K
[0001785530] D
[0001785530] SC 13D
[0001785530] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Bank of America Corp /DE/ Werewolf Therapeutics Inc [2024-02-13] 5.8
Adage Capital Partners GP LLC Werewolf Therapeutics Inc [2023-12-21] 8.38
Rubric Capital Management LP Werewolf Therapeutics Inc [2023-02-10] 5.97
PFM Health Sciences LP Werewolf Therapeutics Inc [2023-01-17] 5.3
PFM Health Sciences LP Werewolf Therapeutics Inc [2022-05-02] 5.5
Longwood Fund III GP LLC Werewolf Therapeutics Inc [2021-05-14] 6.1
MPM BioVentures 2014 LP Werewolf Therapeutics Inc [2021-05-14] 10.6
Taiho Ventures LLC Werewolf Therapeutics Inc [2021-05-13] 7.51
Arkin Moshe Werewolf Therapeutics Inc [2021-05-10] 7.4
RA Capital Management LP Werewolf Therapeutics Inc [2021-05-06] 14.4
Flynn James E Werewolf Therapeutics Inc [2021-05-04] 9.27
Form 3/4/5 Filer 2011 - 2025
Werewolf Therapeutics, Inc.
Lazarus Alon
Singhal Anil K.
Chatterjee Meeta
Atkins Michael B.
Morrison Briggs
Evnin Luke
Sherman Michael A.
RA Capital Management LP
Kolchinsky Peter
RA Capital Healthcare Fund LP
RA Capital Nexus Fund II, L.P.
Shah Rajeev M.
Bloom Steven H.
MPM BioImpact LLC
MPM Oncology Innovations Fund GP LLC
UBS Oncology Impact Fund L.P.
MPM Asset Management LLC
Oncology Impact Fund (Cayman) Management L.P.
Gadicke Ansbert
MPM Oncology Innovations Fund LP
MPM BioVentures 2014, L.P.
Foley Todd
MPM BioVentures 2014 GP LLC
MPM BioVentures 2014 (B), L.P.
MPM Asset Management Investors BV2014 LLC
MPM BioVentures 2014 LLC
Trost Timothy W.
Isaacs Randi
Karunatilake Chulani
Hicklin Daniel J
Lubman Ellen
DiRocco Derek
Seidel-Dugan Cynthia
Leonard Reid
MPM Oncology Impact Management GP LLC
HBM Healthcare Investments (Cayman) Ltd.
UPMC
Longwood Fund III, L.P.
Longwood Fund III GP, LLC
Asanuma Sakae
Taiho Ventures LLC
Arkin Bio Ventures 2 L.P.
Arkin Moshe
Arkin Bio Ventures GPGP Ltd.
Sphera Global Healthcare Management LP
Sphera Funds Management Ltd
Sphera Global Healthcare GP Ltd.
Deerfield Mgmt L.P.
Flynn James E
Deerfield Management Company LP
Deerfield Partners LP
Form 13F Holdings
Firm Period DFND Voting Shares
RA Capital Management LP [2025-06-30] SOLE 6,681,307 6,681,307
MPM Asset Management LLC [2025-06-30] SOLE 4,309,860 4,309,860
MPM BioImpact LLC [2025-06-30] SOLE 2,408,810 2,408,810
Bank of America Corp /DE/ [2025-06-30] DFND 0 2,129,024
Vanguard Group Inc [2025-06-30] SOLE 0 1,287,908
Millennium Management LLC [2025-06-30] SOLE 696,695 696,695
Sphera Funds Management Ltd [2025-06-30] DFND 626,810 626,810
DC Funds, LP [2025-06-30] SOLE 589,102 589,102
PFM Health Sciences LP [2025-06-30] DFND 0 401,110
Jane Street Group LLC [2025-06-30] DFND 374,939 374,939
BlackRock, Inc. [2025-06-30] SOLE 356,667 361,983
Geode Capital Management LLC [2025-06-30] DFND 327,955 327,955
Renaissance Technologies LLC [2025-06-30] SOLE 316,300 316,300
Alyeska Investment Group LP [2025-06-30] SOLE 235,705 235,705
Goldman Sachs Group Inc [2025-06-30] DFND 227,442 227,442
State Street Corp [2025-06-30] DFND 119,168 119,168
Marshall Wace LLP [2025-06-30] OTR 0 103,785
Bridgeway Capital Management LLC [2025-06-30] SOLE 102,000 102,000
AQR Capital Management LLC [2025-06-30] DFND 90,535 90,535
Y-Intercept (Hong Kong) Ltd [2025-06-30] SOLE 84,421 84,421
Susquehanna International Group LLP [2025-06-30] OTR 79,602 79,602
Northern Trust Corp [2025-06-30] DFND 65,836 65,836
Acadian Asset Management LLC [2025-06-30] DFND 61,277 61,277
Two Sigma Advisers LP [2025-06-30] SOLE 48,700 56,600
Edgewood Management LLC [2025-06-30] SOLE 50,000 50,000
Two Sigma Investments LP [2025-06-30] SOLE 45,422 45,422
Qube Research & Technologies Ltd [2025-06-30] SOLE 44,261 44,261
HRT Financial LP [2025-06-30] DFND 42,480 42,480
Vontobel Holding Ltd. [2025-06-30] DFND 40,000 40,000
Regal Investment Advisors LLC [2025-06-30] SOLE 9,345 27,204
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