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U.S. Securities and Exchange Commission


Werewolf Therapeutics, Inc. (0001785530)
SIC: 2834 - Pharmaceutical Preparations
State location: MA | State of Inc.: DE | Fiscal Year End: 1231
Business Address
200 TALCOTT AVENUE
2ND FLOOR
WATERTOWN MA 02472
617-952-0555
 Mailing Address
200 TALCOTT AVENUE
2ND FLOOR
WATERTOWN MA 02472
Ownership Reports from: (Click on owner name to see other issuer holdings for the owner, or CIK for owner filings.)

Owner Filings Transaction Date Type of Owner
Singhal Anil K. 0001982984 2025-02-19 director
RA Capital Nexus Fund II, L.P. 0001825376 2024-05-24 director, 10 percent owner
Atkins Michael B. 0002004793 2024-01-04 director
EVNIN LUKE 0001134657 2022-06-01 director
Sherman Michael A. 0001509463 2022-06-01 director
Chatterjee Meeta 0001835388 2022-06-01 director
Karunatilake Chulani 0001867326 2022-01-06 officer: Chief Technology Officer
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) 0001009258 2021-04-29 10 percent owner, other: Possible Member of 10% Group
Deerfield Mgmt L.P. 0001010823 2021-04-29 10 percent owner, other: Possible Member of 10% Group
GADICKE ANSBERT 0001134655 2021-04-29 10 percent owner
HBM Healthcare Investments (Cayman) Ltd. 0001232258 2021-04-29 10 percent owner
HICKLIN DANIEL J 0001260929 2021-04-29 director, 10 percent owner, officer: See Remarks
DEERFIELD PARTNERS, L.P. 0001301041 2021-04-29 10 percent owner, other: Possible Member of 10% Group
RA Capital Healthcare Fund LP 0001315082 2021-04-29 director, 10 percent owner
Arkin Moshe 0001321178 2021-04-29 10 percent owner
RA CAPITAL MANAGEMENT, L.P. 0001346824 2021-04-29 director, 10 percent owner
Flynn James E 0001352546 2021-04-29 10 percent owner, other: Possible Member of 10% Group
Kolchinsky Peter 0001384859 2021-04-29 director, 10 percent owner
Foley Todd 0001473930 2021-04-29 10 percent owner
SPHERA FUNDS MANAGEMENT LTD. 0001496201 2021-04-29 10 percent owner
Trost Timothy W. 0001571865 2021-04-29 officer: Chief Financial Officer
Sphera Global Healthcare Management LP 0001599854 2021-04-29 10 percent owner
Sphera Global Healthcare GP Ltd. 0001599855 2021-04-29 10 percent owner
MPM BioVentures 2014, L.P. 0001609492 2021-04-29 10 percent owner
MPM BioVentures 2014 (B), L.P. 0001609493 2021-04-29 10 percent owner
MPM Asset Management Investors BV2014 LLC 0001609495 2021-04-29 10 percent owner
Shah Rajeev M. 0001619841 2021-04-29 director, 10 percent owner
Longwood Fund III, L.P. 0001640546 2021-04-29 10 percent owner
UPMC 0001644244 2021-04-29 10 percent owner
Morrison Briggs 0001654430 2021-04-29 director
MPM Oncology Impact Management LP 0001687078 2021-04-29 10 percent owner
UBS Oncology Impact Fund L.P. 0001691428 2021-04-29 10 percent owner
MPM ONCOLOGY INNOVATIONS FUND LP 0001719960 2021-04-29 10 percent owner
MPM Oncology Impact Management GP LLC 0001721035 2021-04-29 10 percent owner
Oncology Impact Fund (Cayman) Management L.P. 0001721036 2021-04-29 10 percent owner
Longwood Fund III GP, LLC 0001762853 2021-04-29 10 percent owner
MPM BioVentures 2014 LLC 0001765021 2021-04-29 10 percent owner
MPM BioVentures 2014 GP LLC 0001765091 2021-04-29 10 percent owner
DiRocco Derek 0001792061 2021-04-29 director
Lazarus Alon 0001808244 2021-04-29 director, 10 percent owner
Leonard Reid 0001857795 2021-04-29 officer: Chief Operating Officer
Isaacs Randi 0001857797 2021-04-29 officer: Chief Medical Officer
Seidel-Dugan Cynthia 0001857799 2021-04-29 officer: Chief Scientific Officer
Asanuma Sakae 0001857822 2021-04-29 director, 10 percent owner
Lubman Ellen 0001857842 2021-04-29 officer: Chief Business Officer
MPM Oncology Innovations Fund GP LLC 0001857903 2021-04-29 10 percent owner
Taiho Ventures LLC 0001857906 2021-04-29 10 percent owner
Arkin Bio Ventures 2 L.P. 0001858705 2021-04-29 10 percent owner
Arkin Bio Ventures GPGP Ltd. 0001858707 2021-04-29 10 percent owner


Items 1 - 80

The information presented below contains only portions of the information presented in the referenced filing or filings.
You should consult the original filing for complete information. Hyperlinks to the forms are provided for your convenience.

Acquistion or Disposition Transaction Date Deemed Execution Date Reporting Owner Form Transaction Type Direct or Indirect Ownership Number of Securities Transacted Number of Securities Owned Line Number Owner CIK Security Name
A 2025-02-19   Singhal Anil K. 4 A-Award --D 45000.0000 45000.0000 1 0001982984 Stock Option (right to buy)
A 2025-01-02   Lubman Ellen 4 A-Award --D 131900.0000 131900.0000 1 0001857842 Stock Option (right to buy)
A 2025-01-02   Trost Timothy W. 4 A-Award --D 60358.0000 60358.0000 2 0001571865 Stock Option (right to buy)
A 2025-01-02   Trost Timothy W. 4 A-Award --D 150000.0000 150000.0000 1 0001571865 Stock Option (right to buy)
A 2025-01-02   Isaacs Randi 4 A-Award --D 68151.0000 68151.0000 2 0001857797 Stock Option (right to buy)
A 2025-01-02   Isaacs Randi 4 A-Award --D 187500.0000 187500.0000 1 0001857797 Stock Option (right to buy)
A 2025-01-02   Karunatilake Chulani 4 A-Award --D 153129.0000 153129.0000 2 0001867326 Stock Option (right to buy)
A 2025-01-02   Karunatilake Chulani 4 A-Award --D 150000.0000 150000.0000 1 0001867326 Stock Option (right to buy)
A 2025-01-02   HICKLIN DANIEL J 4 A-Award --D 185652.0000 185652.0000 2 0001260929 Stock Option (right to buy)
A 2025-01-02   HICKLIN DANIEL J 4 A-Award --D 592690.0000 592690.0000 1 0001260929 Stock Option (right to buy)
A 2024-05-24   RA CAPITAL MANAGEMENT, L.P. 4 A-Award --I 17500.0000 17500.0000 1 0001346824 Stock Option (right to buy)
A 2024-05-24   DiRocco Derek 4 A-Award --D 17500.0000 17500.0000 1 0001792061 Stock Option (right to buy)
A 2024-05-24   Morrison Briggs 4 A-Award --D 17500.0000 17500.0000 1 0001654430 Stock Option (right to buy)
A 2024-05-24   Atkins Michael B. 4 A-Award --D 6723.0000 6723.0000 1 0002004793 Stock Option (right to buy)
A 2024-05-24   Chatterjee Meeta 4 A-Award --D 17500.0000 17500.0000 1 0001835388 Stock Option (right to buy)
A 2024-05-24   Sherman Michael A. 4 A-Award --D 17500.0000 17500.0000 1 0001509463 Stock Option (right to buy)
A 2024-05-24   EVNIN LUKE 4 A-Award --D 17500.0000 17500.0000 1 0001134657 Stock Option (right to buy)
A 2024-05-24   Lazarus Alon 4 A-Award --D 17500.0000 17500.0000 1 0001808244 Stock Option (right to buy)
A 2024-01-04   Atkins Michael B. 4 A-Award --D 35000.0000 35000.0000 1 0002004793 Stock Option (right to buy)
A 2024-01-02   Trost Timothy W. 4 A-Award --D 150000.0000 150000.0000 1 0001571865 Stock Option (right to buy)
A 2024-01-02   Lubman Ellen 4 A-Award --D 131900.0000 131900.0000 1 0001857842 Stock Option (right to buy)
A 2024-01-02   Isaacs Randi 4 A-Award --D 200000.0000 200000.0000 1 0001857797 Stock Option (right to buy)
A 2024-01-02   Karunatilake Chulani 4 A-Award --D 150000.0000 150000.0000 1 0001867326 Stock Option (right to buy)
A 2024-01-02   Seidel-Dugan Cynthia 4 A-Award --D 150000.0000 150000.0000 1 0001857799 Stock Option (right to buy)
A 2024-01-02   HICKLIN DANIEL J 4 A-Award --D 435000.0000 435000.0000 1 0001260929 Stock Option (right to buy)
D 2023-06-21   RA CAPITAL MANAGEMENT, L.P. 4 A-Award --I 13200.0000 13200.0000 1 0001346824 Stock Option (Right to Buy)
A 2023-06-21   Morrison Briggs 4 A-Award --D 13200.0000 13200.0000 1 0001654430 Stock Option (right to buy)
A 2023-06-21   EVNIN LUKE 4 A-Award --D 13200.0000 13200.0000 1 0001134657 Stock Option (right to buy)
A 2023-06-21   Lazarus Alon 4 A-Award --D 13200.0000 13200.0000 1 0001808244 Stock Option (right to buy)
A 2023-06-21   DiRocco Derek 4 A-Award --D 13200.0000 13200.0000 1 0001792061 Stock Option (right to buy)
A 2023-06-21   Chatterjee Meeta 4 A-Award --D 13200.0000 13200.0000 1 0001835388 Stock Option (right to buy)
A 2023-06-21   Sherman Michael A. 4 A-Award --D 13200.0000 13200.0000 1 0001509463 Stock Option (right to buy)
A 2023-01-06   RA CAPITAL MANAGEMENT, L.P. 4 P-Purchase --I 1853000.0000 5701056.0000 1 0001346824 Common Stock
A 2023-01-03   HICKLIN DANIEL J 4 A-Award --D 295500.0000 295500.0000 1 0001260929 Stock Option (right to buy)
A 2023-01-03   Lubman Ellen 4 A-Award --D 86200.0000 86200.0000 1 0001857842 Stock Option (right to buy)
A 2023-01-03   Seidel-Dugan Cynthia 4 A-Award --D 115900.0000 115900.0000 1 0001857799 Stock Option (right to buy)
A 2023-01-03   Karunatilake Chulani 4 A-Award --D 103600.0000 103600.0000 1 0001867326 Stock Option (right to buy)
A 2023-01-03   Trost Timothy W. 4 A-Award --D 102800.0000 102800.0000 1 0001571865 Stock Option (right to buy)
A 2023-01-03   Leonard Reid 4 A-Award --D 93600.0000 93600.0000 1 0001857795 Stock Option (right to buy)
A 2023-01-03   Isaacs Randi 4 A-Award --D 103300.0000 103300.0000 1 0001857797 Stock Option (right to buy)
A 2022-06-01   RA CAPITAL MANAGEMENT, L.P. 4 A-Award --I 11600.0000 11600.0000 1 0001346824 Stock Option (Right to Buy)
A 2022-06-01   EVNIN LUKE 4 A-Award --D 11600.0000 11600.0000 1 0001134657 Stock Option (right to buy)
A 2022-06-01   DiRocco Derek 4 A-Award --D 11600.0000 11600.0000 1 0001792061 Stock Option (right to buy)
A 2022-06-01   Morrison Briggs 4 A-Award --D 11600.0000 11600.0000 1 0001654430 Stock Option (right to buy)
A 2022-06-01   Karunatilake Chulani 4 A-Award --D 136000.0000 136000.0000 1 0001867326 Stock Option (right to buy)
A 2022-06-01   Lazarus Alon 4 A-Award --D 11600.0000 11600.0000 1 0001808244 Stock Option (right to buy)
A 2022-06-01   Sherman Michael A. 4 A-Award --D 11600.0000 11600.0000 1 0001509463 Stock Option (right to buy)
A 2022-06-01   Chatterjee Meeta 4 A-Award --D 7733.0000 7733.0000 1 0001835388 Stock Option (right to buy)
D 2022-01-12   Seidel-Dugan Cynthia 4 M-Exempt --D 15532.0000 83631.0000 5 0001857799 Stock Option (right to buy)
D 2022-01-12   Seidel-Dugan Cynthia 4 M-Exempt --D 24199.0000 36937.0000 4 0001857799 Stock Option (right to buy)
A 2022-01-12   Seidel-Dugan Cynthia 4 M-Exempt --D 15532.0000 164888.0000 2 0001857799 Common Stock
A 2022-01-12   Seidel-Dugan Cynthia 4 M-Exempt --D 24199.0000 149356.0000 1 0001857799 Common Stock
A 2022-01-06   Isaacs Randi 4 A-Award --D 79516.0000 79516.0000 1 0001857797 Stock Option (right to buy)
A 2022-01-06   Leonard Reid 4 A-Award --D 70967.0000 70967.0000 1 0001857795 Stock Option (Right to Buy)
A 2022-01-06   Trost Timothy W. 4 A-Award --D 65960.0000 65960.0000 1 0001571865 Stock Option (right to buy)
A 2022-01-06   HICKLIN DANIEL J 4 A-Award --D 215888.0000 215888.0000 1 0001260929 Stock Option (right to buy)
A 2022-01-06   Lubman Ellen 4 A-Award --D 51088.0000 51088.0000 1 0001857842 Stock Option (right to buy)
A 2022-01-06   Karunatilake Chulani 4 A-Award --D 34258.0000 34258.0000 1 0001867326 Stock Option (right to buy)
A 2022-01-06   Seidel-Dugan Cynthia 4 A-Award --D 79516.0000 79516.0000 3 0001857799 Stock Option (right to buy)
D 2021-12-30   Leonard Reid 4 M-Exempt --D 14102.0000 47034.0000 3 0001857795 Stock Option (Right to Buy)
A 2021-12-30   Leonard Reid 4 M-Exempt --D 14102.0000 14102.0000 1 0001857795 Common Stock
D 2021-12-15   Leonard Reid 4 S-Sale --I 135.0000 122157.0000 2 0001857795 Common Stock
D 2021-12-15   Leonard Reid 4 S-Sale --I 2865.0000 122292.0000 1 0001857795 Common Stock
A 2021-10-28   Chatterjee Meeta 4 A-Award --D 23200.0000 23200.0000 1 0001835388 Stock Option (right to buy)
A 2021-07-01   Karunatilake Chulani 4 A-Award --D 272000.0000 272000.0000 1 0001867326 Stock Option (right to buy)
A 2021-06-16   RA CAPITAL MANAGEMENT, L.P. 4 P-Purchase --I 9285.0000 4291881.0000 3 0001346824 Common Stock
A 2021-06-15   RA CAPITAL MANAGEMENT, L.P. 4 P-Purchase --I 7958.0000 4282596.0000 2 0001346824 Common Stock
A 2021-06-14   RA CAPITAL MANAGEMENT, L.P. 4 P-Purchase --I 306055.0000 4274638.0000 1 0001346824 Common Stock
A 2021-05-27   Sherman Michael A. 4 A-Award --D 23200.0000 23200.0000 1 0001509463 Stock Option (right to buy)
D 2021-05-04   MPM BioVentures 2014, L.P. 4 C-Conversion --I 6621546.0000 0.0000 5 0001609492 Series B Preferred Stock
D 2021-05-04   MPM BioVentures 2014, L.P. 4 C-Conversion --I 19925321.0000 0.0000 4 0001609492 Series A Preferred Stock
A 2021-05-04   MPM BioVentures 2014, L.P. 4 P-Purchase --I 125759.0000 3187998.0000 3 0001609492 Common Stock
A 2021-05-04   MPM BioVentures 2014, L.P. 4 C-Conversion --I 763809.0000 3062239.0000 2 0001609492 Common Stock
A 2021-05-04   MPM BioVentures 2014, L.P. 4 C-Conversion --I 2298430.0000 2298430.0000 1 0001609492 Common Stock
D 2021-05-04   GADICKE ANSBERT 4 C-Conversion --I 12899925.0000 0.0000 5 0001134655 Series B Preferred Stock
D 2021-05-04   GADICKE ANSBERT 4 C-Conversion --I 38817998.0000 0.0000 4 0001134655 Series A Preferred Stock
A 2021-05-04   GADICKE ANSBERT 4 P-Purchase --I 245000.0000 6672183.0000 3 0001134655 Common Stock
A 2021-05-04   GADICKE ANSBERT 4 C-Conversion --I 1488033.0000 6427183.0000 2 0001134655 Common Stock
A 2021-05-04   GADICKE ANSBERT 4 C-Conversion --I 4477742.0000 4939150.0000 1 0001134655 Common Stock
D 2021-05-04   EVNIN LUKE 4 C-Conversion --I 7939970.0000 0.0000 6 0001134657 Series B Preferred Stock

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Modified: 04/22/2016