Aptevo Therapeutics Announces Closing of Existing Warrants Exercise and PIPE for $4.5 Million Gross Proceeds

SEATTLE, WA / ACCESS Newswire / August 13, 2026 / Aptevo Therapeutics Inc. (NASDAQ:APVO) ("Aptevo" or the "Company"), a clinical-stage biotechnology company developing novel multispecific immuno-oncology therapeutics, today closed its previously …