Werewolf Therapeutics, Inc. (HOWL)

Latest Insider Confidence Score

2026Q1

44.5
Bearish

Company insider confidence (by quarter)

2021Q2 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
MPM BioVentures 2014, L.P. 10% Owner 4,983,843 Dec 4, 2025
MPM BioVentures 2014 (B), L.P. 10% Owner 4,983,843 Dec 4, 2025
MPM BioVentures 2014 LLC 10% Owner 4,983,843 Dec 4, 2025
MPM BioVentures 2014 GP LLC 10% Owner 4,983,843 Dec 4, 2025
MPM Asset Management Investors BV2014 LLC 10% Owner 4,983,843 Dec 4, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Jan 16, 2026 Jan 20, 2026 EVNIN LUKE Director Sell 48.1 -38,782 -1.76% ✓ $20.9K
Jan 13, 2026 Jan 15, 2026 EVNIN LUKE Director Sell 38.8 -111,227 -4.82% ✓ $61.8K
Jan 8, 2026 Jan 12, 2026 EVNIN LUKE Director Sell 38.8 -91,374 -3.81% ✓ $53.5K
Jan 5, 2026 Jan 7, 2026 EVNIN LUKE Director Sell 44.4 -71,054 -2.87% ✓ $45.9K
Dec 30, 2025 Jan 2, 2026 EVNIN LUKE Director Sell 40.6 -78,377 -3.07% ✓ $48.4K
Dec 22, 2025 Dec 29, 2025 EVNIN LUKE Director Sell 26.3 -291,283 -10.25% ✓ $185.2K
Dec 15, 2025 Dec 17, 2025 EVNIN LUKE Director Sell 45.0 -48,171 -1.67% ✓ $52K
Dec 10, 2025 Dec 12, 2025 EVNIN LUKE Director Sell 41.3 -82,971 -2.79% ✓ $88.6K
Dec 5, 2025 Dec 9, 2025 EVNIN LUKE Director Sell 37.5 -95,179 -3.10% ✓ $94.8K
Dec 2, 2025 Dec 4, 2025 EVNIN LUKE Director Sell 37.5 -128,185 -4.01% ✓ $117.6K
Dec 2, 2025 Dec 4, 2025 MPM BioVentures 2014, L.P. Other Sell 37.5 -199,732 -4.01% ✓ $183.3K
Dec 2, 2025 Dec 4, 2025 GADICKE ANSBERT Other Sell 37.5 -199,732 -4.01% ✓ $183.3K
Nov 26, 2025 Dec 1, 2025 EVNIN LUKE Director Sell 41.3 -91,088 -2.77% ✓ $87.8K
Nov 26, 2025 Dec 1, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 41.3 -141,927 -2.77% ✓ $136.9K
Nov 26, 2025 Dec 1, 2025 GADICKE ANSBERT 10% Owner Sell 41.3 -141,927 -2.77% ✓ $136.9K
Nov 21, 2025 Nov 25, 2025 EVNIN LUKE Director Sell 37.5 -125,576 -3.68% ✓ $115.2K
Nov 21, 2025 Nov 25, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 37.5 -195,666 -3.68% ✓ $179.6K
Nov 21, 2025 Nov 25, 2025 GADICKE ANSBERT 10% Owner Sell 37.5 -195,666 -3.68% ✓ $179.6K
Nov 18, 2025 Nov 20, 2025 EVNIN LUKE Director Sell 41.3 -102,753 -2.92% ✓ $94.9K
Nov 18, 2025 Nov 20, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 41.3 -160,103 -2.92% ✓ $147.9K
Nov 18, 2025 Nov 20, 2025 GADICKE ANSBERT 10% Owner Sell 41.3 -160,103 -2.92% ✓ $147.9K
Nov 13, 2025 Nov 17, 2025 EVNIN LUKE Director Sell 37.5 -134,553 -3.69% ✓ $128.8K
Nov 13, 2025 Nov 17, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 37.5 -209,652 -3.68% ✓ $200.7K
Nov 13, 2025 Nov 17, 2025 GADICKE ANSBERT 10% Owner Sell 37.5 -209,652 -3.68% ✓ $200.7K
Nov 7, 2025 Nov 12, 2025 EVNIN LUKE Director Sell 37.5 -137,041 -3.62% ✓ $154.9K
Nov 7, 2025 Nov 12, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 37.5 -213,529 -3.62% ✓ $241.3K
Nov 7, 2025 Nov 12, 2025 GADICKE ANSBERT 10% Owner Sell 37.5 -213,529 -3.62% ✓ $241.3K
Nov 4, 2025 Nov 6, 2025 EVNIN LUKE Director Sell 37.5 -155,885 -3.95% ✓ $189.8K
Nov 4, 2025 Nov 6, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 35.0 -242,890 -3.95% ✓ $295.8K
Nov 4, 2025 Nov 6, 2025 GADICKE ANSBERT 10% Owner Sell 35.0 -242,890 -3.95% ✓ $295.8K
Oct 30, 2025 Nov 3, 2025 EVNIN LUKE Director Sell 35.0 -189,356 -4.58% ✓ $251.3K
Oct 30, 2025 Nov 3, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 35.0 -295,043 -4.58% ✓ $391.6K
Oct 30, 2025 Nov 3, 2025 GADICKE ANSBERT 10% Owner Sell 35.0 -295,043 -4.58% ✓ $391.6K
Oct 27, 2025 Oct 29, 2025 EVNIN LUKE Director Sell 35.0 -177,145 -4.11% ✓ $286.5K
Oct 27, 2025 Oct 29, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 35.0 -276,017 -4.11% ✓ $446.4K
Oct 27, 2025 Oct 29, 2025 GADICKE ANSBERT 10% Owner Sell 35.0 -276,017 -4.11% ✓ $446.4K
Jun 12, 2025 Jun 13, 2025 Lazarus Alon Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2025 Jun 13, 2025 Morrison Briggs Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2025 Jun 13, 2025 Chatterjee Meeta Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2025 Jun 13, 2025 EVNIN LUKE Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2025 Jun 13, 2025 Sherman Michael A. Director Neutral 52.5 - 0.00% ✗ -
Jun 11, 2025 Jun 13, 2025 Singhal Anil K. Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2025 Jun 13, 2025 Atkins Michael B. Director Neutral 52.5 - 0.00% ✗ -
May 12, 2025 May 14, 2025 RA CAPITAL MANAGEMENT, L.P. Director Buy 92.5 +536,426 9.41% ✗ $487.2K
May 1, 2025 May 2, 2025 Bloom Steven H. Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Mar 27, 2025 Apr 30, 2025 MPM BioVentures 2014, L.P. 10% Owner Sell 52.5 -1,963 -0.06% ✗ $2.1K
Mar 27, 2025 Apr 30, 2025 EVNIN LUKE Director Sell 52.5 -2,425 -0.06% ✗ $2.5K
Mar 27, 2025 Apr 30, 2025 GADICKE ANSBERT 10% Owner Sell 52.5 -4,386 -0.07% ✗ $4.6K
Apr 18, 2025 Bloom Steven H. Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Feb 19, 2025 Feb 21, 2025 Singhal Anil K. Director Neutral 52.5 - 0.00% ✗ -
Feb 21, 2025 Singhal Anil K. Director Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Lubman Ellen Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Trost Timothy W. CFO Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Isaacs Randi Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Karunatilake Chulani Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 HICKLIN DANIEL J Officer Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 RA CAPITAL MANAGEMENT, L.P. Director Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 DiRocco Derek Director Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 Morrison Briggs Director Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 Atkins Michael B. Director Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 Chatterjee Meeta Director Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 Sherman Michael A. Director Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 EVNIN LUKE Director Neutral 52.5 - 0.00% ✗ -
May 24, 2024 May 24, 2024 Lazarus Alon Director Neutral 52.5 - 0.00% ✗ -
Jan 4, 2024 Jan 4, 2024 Atkins Michael B. Director Neutral 52.5 - 0.00% ✗ -
Jan 4, 2024 Atkins Michael B. Director Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 Trost Timothy W. CFO Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 Lubman Ellen Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 Isaacs Randi Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 Karunatilake Chulani Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 Seidel-Dugan Cynthia Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2024 Jan 4, 2024 HICKLIN DANIEL J Officer Neutral 52.5 - 0.00% ✗ -
Jun 21, 2023 Jun 23, 2023 RA CAPITAL MANAGEMENT, L.P. Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2023 Jun 23, 2023 Morrison Briggs Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2023 Jun 23, 2023 EVNIN LUKE Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2023 Jun 23, 2023 Lazarus Alon Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2023 Jun 23, 2023 DiRocco Derek Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2023 Jun 23, 2023 Chatterjee Meeta Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2023 Jun 23, 2023 Sherman Michael A. Director Neutral 52.5 - 0.00% ✗ -
Jan 6, 2023 Jan 10, 2023 RA CAPITAL MANAGEMENT, L.P. Director Buy 100.0 +1,853,000 48.15% ✗ $4.1M
Jan 3, 2023 Jan 9, 2023 HICKLIN DANIEL J Officer Neutral 52.5 - 0.00% ✗ -
Jan 3, 2023 Jan 9, 2023 Lubman Ellen Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Jan 3, 2023 Jan 9, 2023 Seidel-Dugan Cynthia Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Jan 3, 2023 Jan 9, 2023 Karunatilake Chulani Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jan 3, 2023 Jan 9, 2023 Trost Timothy W. CFO Neutral 52.5 - 0.00% ✗ -
Jan 3, 2023 Jan 9, 2023 Leonard Reid COO Neutral 52.5 - 0.00% ✗ -
Jan 3, 2023 Jan 9, 2023 Isaacs Randi Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 RA CAPITAL MANAGEMENT, L.P. Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 EVNIN LUKE Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 DiRocco Derek Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Morrison Briggs Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Karunatilake Chulani Chief Technology Officer Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Sherman Michael A. Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Lazarus Alon Director Neutral 52.5 - 0.00% ✗ -
Jun 1, 2022 Jun 3, 2022 Chatterjee Meeta Director Neutral 52.5 - 0.00% ✗ -
Jan 6, 2022 Jan 18, 2022 Isaacs Randi Chief Medical Officer Neutral 52.5 - 0.00% ✗ -
Jan 6, 2022 Jan 18, 2022 Leonard Reid COO Neutral 52.5 - 0.00% ✗ -
Jan 6, 2022 Jan 18, 2022 Trost Timothy W. CFO Neutral 52.5 - 0.00% ✗ -
Jan 6, 2022 Jan 18, 2022 HICKLIN DANIEL J Officer Neutral 52.5 - 0.00% ✗ -
Jan 6, 2022 Jan 18, 2022 Lubman Ellen Chief Business Officer Neutral 52.5 - 0.00% ✗ -