HOWL · Werewolf Therapeutics Inc. Common Stock
View on chartInsiders & Stakes
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 4,784,111 Shares held | 12/4/2025 | View profile |
| Ansbert Gadicke Director | ▼ Sell | Open Market | 4,784,111 Shares held | 12/4/2025 | View profile |
| RA CAPITAL MANAGEMENT, L.P. Director | ▼ Sell | Open Market | 303,719 Shares held | 6/17/2026 | View profile |
| Seidel-Dugan Cynthia Chief Scientific Officer | ▲ Buy | Option Exercise | 164,888 Shares held | 1/12/2022 | View profile |
| Leonard Reid Chief Operating Officer | ▲ Buy | Option Exercise | 14,102 Shares held | 12/30/2021 | View profile |
| Luke Evnin | ▼ Sell | Open Market | 0 Shares held | 7/7/2026 | View profile |
Transaction History
| Luke Evnin | ▼ Sell | Open Market | 107,429 | $33K | 7/7/2026 |
| Luke Evnin | ▼ Sell | Open Market | 35,770 | $11K | 7/6/2026 |
| Luke Evnin | ▼ Sell | Open Market | 157,084 | $47K | 6/29/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 389,216 | $136K | 6/17/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 27,695 | $10K | 6/17/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 139,686 | $52K | 6/16/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 9,939 | $4K | 6/16/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 120,216 | $47K | 6/15/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 8,554 | $3K | 6/15/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 159,119 | $64K | 6/12/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 11,322 | $5K | 6/12/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 245,066 | $93K | 6/11/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 17,437 | $7K | 6/11/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 42,872 | $16K | 6/10/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 3,051 | $1K | 6/10/2026 |
| Luke Evnin | ▼ Sell | Open Market | 76,928 | $28K | 6/9/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 345,235 | $128K | 6/9/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 24,565 | $9K | 6/9/2026 |
| Luke Evnin | ▼ Sell | Open Market | 60,547 | $24K | 6/8/2026 |
| Luke Evnin | ▼ Sell | Open Market | 24,946 | $10K | 6/5/2026 |
| Luke Evnin | ▼ Sell | Open Market | 20,072 | $9K | 6/4/2026 |
| Luke Evnin | ▼ Sell | Open Market | 29,749 | $12K | 6/3/2026 |
| Luke Evnin | ▼ Sell | Open Market | 29,595 | $13K | 6/2/2026 |
| Luke Evnin | ▼ Sell | Open Market | 80,459 | $38K | 6/1/2026 |
| Luke Evnin | ▼ Sell | Open Market | 32,556 | $15K | 5/29/2026 |
| Luke Evnin | ▼ Sell | Open Market | 27,698 | $13K | 5/28/2026 |
| Luke Evnin | ▼ Sell | Open Market | 80,852 | $39K | 5/27/2026 |
| Luke Evnin | ▼ Sell | Open Market | 67,950 | $32K | 5/26/2026 |
| Luke Evnin | ▼ Sell | Open Market | 87,425 | $39K | 5/22/2026 |
| Luke Evnin | ▼ Sell | Open Market | 36,387 | $15K | 5/21/2026 |
| Luke Evnin | ▼ Sell | Open Market | 85,895 | $37K | 5/20/2026 |
| Luke Evnin | ▼ Sell | Open Market | 62,970 | $28K | 5/19/2026 |
| Luke Evnin | ▼ Sell | Open Market | 22,184 | $11K | 5/18/2026 |
| Luke Evnin | ▼ Sell | Open Market | 44,679 | $24K | 5/13/2026 |
| Luke Evnin | ▼ Sell | Open Market | 67,885 | $43K | 5/12/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 94,432 | $60K | 5/12/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 6,719 | $4K | 5/12/2026 |
| Luke Evnin | ▼ Sell | Open Market | 33,948 | $23K | 5/11/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 81,678 | $55K | 5/11/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 5,812 | $4K | 5/11/2026 |
| Luke Evnin | ▼ Sell | Open Market | 305,741 | $214K | 5/8/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 351,514 | $250K | 5/8/2026 |
| RA CAPITAL MANAGEMENT, L.P. | ▼ Sell | Open Market | 25,012 | $18K | 5/8/2026 |
| Luke Evnin | ▼ Sell | Open Market | 79,086 | $50K | 5/7/2026 |
| Luke Evnin | ▼ Sell | Open Market | 14,635 | $10K | 5/6/2026 |
| Luke Evnin | ▼ Sell | Open Market | 6,860 | $5K | 5/5/2026 |
| Luke Evnin | ▼ Sell | Open Market | 47,963 | $35K | 5/4/2026 |
| Luke Evnin | ▼ Sell | Open Market | 58,394 | $43K | 5/1/2026 |
| Luke Evnin | ▼ Sell | Open Market | 168,262 | $121K | 4/30/2026 |
| Luke Evnin | ▼ Sell | Open Market | 56,559 | $39K | 4/29/2026 |
| Luke Evnin | ▼ Sell | Open Market | 95,412 | $70K | 4/28/2026 |
| Luke Evnin | ▼ Sell | Open Market | 53,940 | $46K | 4/27/2026 |
| Luke Evnin | ▼ Sell | Open Market | 38,782 | $21K | 1/16/2026 |
| Luke Evnin | ▼ Sell | Open Market | 37,413 | $21K | 1/15/2026 |
| Luke Evnin | ▼ Sell | Open Market | 30,616 | $17K | 1/14/2026 |
| Luke Evnin | ▼ Sell | Open Market | 43,198 | $24K | 1/13/2026 |
| Luke Evnin | ▼ Sell | Open Market | 58,980 | $34K | 1/12/2026 |
| Luke Evnin | ▼ Sell | Open Market | 24,678 | $15K | 1/9/2026 |
| Luke Evnin | ▼ Sell | Open Market | 7,716 | $5K | 1/8/2026 |
| Luke Evnin | ▼ Sell | Open Market | 11,915 | $8K | 1/7/2026 |
| Luke Evnin | ▼ Sell | Open Market | 40,761 | $26K | 1/6/2026 |
| Luke Evnin | ▼ Sell | Open Market | 18,378 | $12K | 1/5/2026 |
| Luke Evnin | ▼ Sell | Open Market | 18,568 | $12K | 1/2/2026 |
| Luke Evnin | ▼ Sell | Open Market | 24,962 | $15K | 12/31/2025 |
| Luke Evnin | ▼ Sell | Open Market | 34,847 | $21K | 12/30/2025 |
| Luke Evnin | ▼ Sell | Open Market | 108,606 | $66K | 12/29/2025 |
| Luke Evnin | ▼ Sell | Open Market | 35,632 | $22K | 12/26/2025 |
| Luke Evnin | ▼ Sell | Open Market | 16,310 | $11K | 12/24/2025 |
| Luke Evnin | ▼ Sell | Open Market | 71,428 | $45K | 12/23/2025 |
| Luke Evnin | ▼ Sell | Open Market | 59,307 | $41K | 12/22/2025 |
| Luke Evnin | ▼ Sell | Open Market | 9,983 | $11K | 12/17/2025 |
| Luke Evnin | ▼ Sell | Open Market | 14,548 | $15K | 12/16/2025 |
| Luke Evnin | ▼ Sell | Open Market | 23,640 | $25K | 12/15/2025 |
| Luke Evnin | ▼ Sell | Open Market | 17,858 | $19K | 12/12/2025 |
| Luke Evnin | ▼ Sell | Open Market | 28,009 | $30K | 12/11/2025 |
| Luke Evnin | ▼ Sell | Open Market | 37,104 | $39K | 12/10/2025 |
| Luke Evnin | ▼ Sell | Open Market | 44,570 | $45K | 12/9/2025 |
| Luke Evnin | ▼ Sell | Open Market | 34,041 | $34K | 12/8/2025 |
| Luke Evnin | ▼ Sell | Open Market | 16,568 | $16K | 12/5/2025 |
| Luke Evnin | ▼ Sell | Open Market | 53,416 | $52K | 12/4/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 83,230 | $81K | 12/4/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 83,230 | $81K | 12/4/2025 |
| Luke Evnin | ▼ Sell | Open Market | 36,726 | $32K | 12/3/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 57,225 | $50K | 12/3/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 57,225 | $50K | 12/3/2025 |
| Luke Evnin | ▼ Sell | Open Market | 38,043 | $34K | 12/2/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 59,277 | $53K | 12/2/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 59,277 | $53K | 12/2/2025 |
| Luke Evnin | ▼ Sell | Open Market | 39,096 | $37K | 12/1/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 60,917 | $57K | 12/1/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 60,917 | $57K | 12/1/2025 |
| Luke Evnin | ▼ Sell | Open Market | 13,014 | $13K | 11/28/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 20,277 | $20K | 11/28/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 20,277 | $20K | 11/28/2025 |
| Luke Evnin | ▼ Sell | Open Market | 38,978 | $38K | 11/26/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 60,733 | $60K | 11/26/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 60,733 | $60K | 11/26/2025 |
| Luke Evnin | ▼ Sell | Open Market | 27,297 | $25K | 11/25/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 42,533 | $39K | 11/25/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 42,533 | $39K | 11/25/2025 |
| Luke Evnin | ▼ Sell | Open Market | 56,992 | $56K | 11/24/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 88,802 | $87K | 11/24/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 88,802 | $87K | 11/24/2025 |
| Luke Evnin | ▼ Sell | Open Market | 41,287 | $34K | 11/21/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 64,331 | $53K | 11/21/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 64,331 | $53K | 11/21/2025 |
| Luke Evnin | ▼ Sell | Open Market | 26,411 | $24K | 11/20/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 41,152 | $37K | 11/20/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 41,152 | $37K | 11/20/2025 |
| Luke Evnin | ▼ Sell | Open Market | 42,566 | $40K | 11/19/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 66,324 | $62K | 11/19/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 66,324 | $62K | 11/19/2025 |
| Luke Evnin | ▼ Sell | Open Market | 33,776 | $31K | 11/18/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 52,627 | $49K | 11/18/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 52,627 | $49K | 11/18/2025 |
| Luke Evnin | ▼ Sell | Open Market | 36,621 | $35K | 11/17/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 57,061 | $54K | 11/17/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 57,061 | $54K | 11/17/2025 |
| Luke Evnin | ▼ Sell | Open Market | 39,560 | $37K | 11/14/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 61,640 | $57K | 11/14/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 61,640 | $57K | 11/14/2025 |
| Luke Evnin | ▼ Sell | Open Market | 58,372 | $57K | 11/13/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 90,951 | $89K | 11/13/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 90,951 | $89K | 11/13/2025 |
| Luke Evnin | ▼ Sell | Open Market | 26,101 | $28K | 11/12/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 40,669 | $44K | 11/12/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 40,669 | $44K | 11/12/2025 |
| Luke Evnin | ▼ Sell | Open Market | 35,818 | $41K | 11/11/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 55,810 | $64K | 11/11/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 55,810 | $64K | 11/11/2025 |
| Luke Evnin | ▼ Sell | Open Market | 31,172 | $37K | 11/10/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 48,570 | $57K | 11/10/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 48,570 | $57K | 11/10/2025 |
| Luke Evnin | ▼ Sell | Open Market | 43,950 | $49K | 11/7/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 68,480 | $76K | 11/7/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 68,480 | $76K | 11/7/2025 |
| Luke Evnin | ▼ Sell | Open Market | 34,947 | $42K | 11/6/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 54,452 | $66K | 11/6/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 54,452 | $66K | 11/6/2025 |
| Luke Evnin | ▼ Sell | Open Market | 30,774 | $38K | 11/5/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 47,950 | $58K | 11/5/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 47,950 | $58K | 11/5/2025 |
| Luke Evnin | ▼ Sell | Open Market | 90,164 | $110K | 11/4/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 140,488 | $171K | 11/4/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 140,488 | $171K | 11/4/2025 |
| Luke Evnin | ▼ Sell | Open Market | 60,369 | $78K | 11/3/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 94,063 | $121K | 11/3/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 94,063 | $121K | 11/3/2025 |
| Luke Evnin | ▼ Sell | Open Market | 73,192 | $94K | 10/31/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 114,044 | $146K | 10/31/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 114,044 | $146K | 10/31/2025 |
| Luke Evnin | ▼ Sell | Open Market | 55,795 | $80K | 10/30/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 86,936 | $124K | 10/30/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 86,936 | $124K | 10/30/2025 |
| Luke Evnin | ▼ Sell | Open Market | 86,154 | $134K | 10/29/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 134,240 | $208K | 10/29/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 134,240 | $208K | 10/29/2025 |
| Luke Evnin | ▼ Sell | Open Market | 44,327 | $73K | 10/28/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 69,068 | $113K | 10/28/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 69,068 | $113K | 10/28/2025 |
| Luke Evnin | ▼ Sell | Open Market | 46,664 | $80K | 10/27/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 72,709 | $125K | 10/27/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 72,709 | $125K | 10/27/2025 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Open Market | 162,539 | $159K | 5/14/2025 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Open Market | 52,974 | $52K | 5/13/2025 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Open Market | 320,913 | $276K | 5/12/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Other | 22,758 | $2K | 3/27/2025 |
| MPM BioVentures 2014, L.P. | ▼ Sell | Open Market | 1,963 | $2K | 3/27/2025 |
| Luke Evnin | ▼ Sell | Other | 28,113 | $3K | 3/27/2025 |
| Luke Evnin | ▼ Sell | Open Market | 2,425 | $3K | 3/27/2025 |
| Ansbert Gadicke | ▼ Sell | Other | 50,873 | $5K | 3/27/2025 |
| Ansbert Gadicke | ▼ Sell | Open Market | 4,386 | $5K | 3/27/2025 |
| RA CAPITAL MANAGEMENT, L.P. | ▲ Buy | Open Market | 1,853,000 | $4.1M | 1/6/2023 |
| Seidel-Dugan Cynthia | ▲ Buy | Option Exercise | 24,199 | $38K | 1/12/2022 |
| Seidel-Dugan Cynthia | ▲ Buy | Option Exercise | 15,532 | $74K | 1/12/2022 |
| Leonard Reid | ▲ Buy | Option Exercise | 14,102 | $22K | 12/30/2021 |
| Leonard Reid | ▼ Sell | Open Market | 2,865 | $38K | 12/15/2021 |
| Leonard Reid | ▼ Sell | Open Market | 135 | $2K | 12/15/2021 |