Aptevo Therapeutics Announces Closing of Existing Warrants Exercise for $3.0 Million Gross Proceeds

SEATTLE, WA / ACCESS Newswire / November 12, 2026 / Aptevo Therapeutics Inc. (NASDAQ:APVO) ("Aptevo" or the "Company"), a clinical-stage biotechnology company developing novel multispecific immuno-oncology therapeutics, today announced that the Company has entered into warrant inducement letter agreements with certain holders of its existing common warrants (the "Existing Warrants"), pursuant to which such holders have agreed to exercise in full for cash their Existing Warrants to purchase up to an aggregate of 2,777,778 shares of common stock of the Company ("common stock") at a reduced exercise price of $1.08 per share. In consideration for such cash exercises, the Company will issue new unregistered common stock purchase warrants (the "Inducement Warrants") to purchase up to an aggregate of 13,888,890 shares of common stock at an exercise price of $1.08 per share. The Inducement Warrants will be exercisable on or after the date on which the Company obtains the required stockholder approval and will expire five years after their initial exercise date. The shares of common stock issuable upon exercise of the Existing Warrants are registered pursuant to effective registration statements on Form S-1 (File No. 333-298483).