SEATTLE, WA / ACCESS Newswire / December 26, 2025 / Aptevo Therapeutics Inc. (NASDAQ:APVO), a clinical-stage biotechnology company focused on developing novel immune-oncology therapeutics based on its proprietary ADAPTIRâ"¢ and ADAPTIR-FLEXâ"¢ platform technologies, today announced that it will conduct a reverse stock split of its outstanding shares of common stock, par value $0.001 per share ("Common Stock"), at a ratio of 1-for-18 (the "Reverse Stock Split"). The Reverse Stock Split is expected to become ...