January 16, 2026 · Form 4 insider transaction
EVNIN LUKE sold 38,782 shares of HOWL at $0.54 per share, a transaction worth $20.9K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 4 days after the transaction.
Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025.; The shares were sold as follows: 4,152 by MPM Asset Management LLC ("AM LLC"), 26,213 by MPM BioVentures 2014, L.P. ("BV 2014"), 1,749 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 893 by MPM Asset Management Investors BV2014 LLC ("AM BV2014") and 5,775 by MPM Oncology Innovations Fund, L.P. ("MPM OIF").; The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.535 to $0.5495 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.; MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC ("MPM OIF GP") is the general partner of MPM OIF. Luke Evnin is a member of AM LLC, a Managing Director of BV LLC and a manager of MPM OIF GP. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.; The shares are held as follows: 231,408 by AM LLC, 1,461,054 by BV 2014, 97,450 by BV 2014(B), 50,289 by AM BV2014 and 319,659 by MPM OIF.