Form 4 Filing for ANAPTYSBIO, INC. - Insider Transactions

Eric Loumeau, Chief Legal Officer of ANAPTYSBIO, INC., reported transactions on December 22, 2025. Loumeau acquired 10,000 shares of Common Stock at $14.02 per share and disposed of 10,000 shares of Common Stock at $51.00 per share. These transactions were executed under a 10b5-1 trading plan. Additionally, Loumeau was granted an employee stock option to buy 10,000 shares of Common Stock at a conversion/exercise price of $14.02, with the option being fully vested and expiring on December 5, 2029. Following these transactions, Loumeau holds 8,947 shares of Common Stock directly. The filing also notes that Loumeau holds additional unvested options to purchase up to 414,810 shares of common stock.