November 6, 2025 · Form 4 insider transaction
MPM BioVentures 2014, L.P. sold 54,452 shares of HOWL at $1.21 per share, a transaction worth $65.9K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 0 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: 3,738 by AM LLC, 23,619 by BV 2014, 1,575 by BV 2014(B), 814 by AM BV2014, 5,201 by MPM OIF and 19,505 by UBS Oncology.; The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.185 to $1.27 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.; The shares are held as follows: 405,526 by AM LLC, 2,561,070 by BV 2014, 170,820 by BV 2014(B), 88,149 by AM BV2014, 561,909 by MPM OIF and 2,117,246 by UBS Oncology.