Aptevo Therapeutics Inc. is a clinical-stage biotechnology company primarily focused on pioneering immunotherapeutic agents for a variety of cancer treatments across the United States. Its foremost investigational drug, APVO436, is a bispecific antibody crafted to engage T-cells, which is currently undergoing a Phase 1b clinical study for acute myeloid leukemia and myelodysplastic syndromes. Beyond its lead asset, Aptevo's research pipeline encompasses several preclinical compounds. These include ALG.APV-527, an experimental bispecific ADAPTIR molecule designed to target both 4-1BB (CD137) and 5T4, a tumor-specific antigen prevalent in numerous cancer types. Another promising candidate is APVO603, a dual agonist bispecific antibody that targets both 4-1BB and OX40. The company is also advancing APVO442, a bispecific agent leveraging its ADAPTIR-FLEX platform technology to improve the precise delivery of drugs to prostate-specific membrane antigen (PSMA)-positive tumors for the treatment of prostate cancer. To further its development efforts for ALG.APV-527, Aptevo maintains a collaborative partnership and option agreement with Alligator Bioscience AB. Founded in 2016, Aptevo Therapeutics Inc. operates from its headquarters located in Seattle, Washington.
Aptevo Provides 2Q26 Business Update and Reports Second Quarter Financial Results
Aptevo reported updated Phase 1b/2 data for its lead candidate mipletamig in frontline acute myeloid leukemia, demonstrating an 81% remission rate and 87% clinical benefit rate across evaluable patients.
The company advanced its corporate strategy by appointing Dr. Mary J. Janatpour as CSO, securing a $1.5M non-dilutive grant for APVO451, and forming a 50/50 radiopharmaceutical collaboration with Niowave that included an equity investment.
As of June 30, 2026, Aptevo held $9.8 million in cash and raised $0.6 million through equity purchase agreements during the quarter.