APVO

Remission results nearly double published ven/aza outcomes in patients with historically limited treatment success SEATTLE, WA / ACCESS Newswire / September 3, 2026 / Aptevo Therapeutics Inc. (Nasdaq:APVO), a clinical-stage biotechnology company developing novel multispecific immuno-oncology therapeutics, today announced a 93% clinical benefit rate with its mipletamig triplet in evaluable frontline acute myeloid leukemia (AML) patients with TP53 mutations, one of the most difficult-to-treat forms of the disease and a patient population that has historically responded poorly to treatment. "TP53-mutated AML remains one of the most challenging AML subpopulations to treat," said Dirk Huebner, M.D.

Mipletamig Drives Clinical Momentum with Strong Frontline AML Data, Path Toward Phase 2 Chief Scientific Officer Appointment Strengthens Execution Across Advancing Oncology Pipeline Non-Dilutive Grant Funding Advances APVO451 and Validates Trispecific Solid Tumor Strategy Strategic Niowave Collaboration Opens a New Radiopharmaceutical Therapeutic Development Opportunity SEATTLE, WA / ACCESS Newswire / August 14, 2026 / Aptevo Therapeutics Inc. (NASDAQ:APVO), a clinical-stage biotechnology company developing novel immuno-oncology therapeutics based on its proprietary ADAPTIR™ and ADAPTIR-FLEX™ platform technologies, today reported financial results for the quarter ended June 30, 2026 and provided a business update highlighting strong clinical progress for mipletamig, strengthened scientific leadership, non-dilutive funding to advance its solid tumor trispecific pipeline and expansion into radiopharmaceutical therapeutic development through a 50/50 collaboration with Niowave. "During the second quarter, we made important progress against the programs and initiatives we believe can create near- and long-term value for Aptevo," said Jeff Lamothe, President and Chief Executive Officer of Aptevo.

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 announced warrant inducement transaction with certain holders of its existing common warrants (the "Existing Warrants"), pursuant to which such holders have exercised in full for cash their Existing Warrants to purchase up to an aggregate of 254,922 shares of common stock of the Company ("common stock") at a reduced exercise price of $4.03 per share. In consideration for such cash exercises, the Company has issued new unregistered common stock purchase warrants (the "Inducement Warrants") to purchase up to an aggregate of 1,274,610 shares of common stock at an exercise price of $4.03 per share.

SEATTLE, WA / ACCESS Newswire / August 12, 2026 / Aptevo Therapeutics Inc. (NASDAQ:APVO) ("Aptevo" or the "Company"), a clinical-stage biotechnology company developing novel multispecific immuno-oncology therapeutics, today announced it 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 254,922 shares of common stock of the Company ("common stock") at a reduced exercise price of $4.03 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 1,274,610 shares of common stock at an exercise price of $4.03 per share.

Filing supports potential development of radiopharmaceuticals, T-cell engagers and other immune-based approaches using a versatile platform approach SEATTLE, WA / ACCESS Newswire / July 27, 2026 / Aptevo Therapeutics Inc. (NASDAQ:APVO), a clinical-stage biotechnology company developing novel multispecific immuno-oncology therapeutics, today announced a new solid tumor strategy designed to fight cancer on multiple fronts. The Company has filed a patent application covering a proprietary Nectin-4 x PD-L1 dual-targeting backbone designed to strengthen Aptevo's oncology pipeline, expand partnering opportunities and support multiple therapeutic approaches from a single platform-derived innovation.

SEATTLE, WA / ACCESS Newswire / June 30, 2026 / Aptevo Therapeutics Inc. (NASDAQ:APVO), a clinical-stage biotechnology company developing novel immuno-oncology therapeutics based on its proprietary ADAPTIR™ and ADAPTIR-FLEX™ platform technologies, today announced it has been awarded a $1.5 million non-dilutive research grant from the Andy Hill Cancer Research Endowment (CARE) Fund under its Implementation and Outcomes Research program to support investigational new drug (IND)-enabling work for APVO451, Aptevo's novel trispecific antibody-like immunotherapy candidate for solid tumors. Aptevo believes that obtaining this competitive award, reviewed by subject matter experts and awarded based on merit, provides external validation of APVO451's tumor-directed trispecific design and supports Aptevo's ongoing work around nectin-4-targeted therapies.

Experienced oncology R&D leader appointed to support Aptevo's expanding oncology pipeline and new radiopharmaceutical development strategy SEATTLE, WA / ACCESS Newswire / May 28, 2026 / Aptevo Therapeutics Inc. (Nasdaq:APVO), a clinical-stage biotechnology company developing novel immuno-oncology therapeutics based on its proprietary ADAPTIR™ and ADAPTIR-FLEX™ platform technologies, today announced the appointment of Mary J. Janatpour, Ph.D.

50/50 Strategic Collaboration Will Develop Up to Three Radiopharmaceutical Programs Innovation and Investment Continue to Accelerate Across Radiopharmaceutical Oncology SEATTLE, WA AND LANSING, MI / ACCESS Newswire / May 27, 2026 / Aptevo Therapeutics Inc. (Nasdaq:APVO), a clinical-stage biotechnology company developing novel multispecific immuno-oncology therapeutics based on its proprietary ADAPTIR™ and ADAPTIR-FLEX™ platform technologies, and Niowave, Inc., a leader in radioisotope production and supply with established partnerships across the radiopharmaceutical ecosystem, today announced a 50/50 strategic collaboration to develop up to three radiopharmaceutical oncology programs. Niowave made an at-the-market equity investment in Aptevo at closing, representing an initial ownership position of 7.9%,[1] with the potential to build a meaningful equity stake of up to 19.99% through warrant exercises at a premium to the initial purchase and future purchases of Aptevo common stock.

Aptevo Therapeutics (APVO) has been upgraded to a Zacks Rank #2 (Buy), reflecting growing optimism about the company's earnings prospects. This might drive the stock higher in the near term.

Mipletamig continues to perform, delivers 87% clinical benefit and 81% remission in frontline AML, with no CRS in frontline patients Executive leadership transition complete. Jeff Lamothe appointed CEO; Marvin White assumes Executive Chair $60 million equity line of credit enhances financial flexibility and extends access to capital through achievement of key catalysts into 2029 SEATTLE, WA / ACCESS Newswire / May 13, 2026 / Aptevo Therapeutics Inc. (Nasdaq:APVO), a clinical-stage biotechnology company focused on developing novel immune-oncology therapeutics based on its proprietary ADAPTIR™ and ADAPTIR-FLEX™ platform technologies, today provided a business update.