Arbutus Biopharma Corporation, a biopharmaceutical company, develops novel therapeutics for chronic Hepatitis B virus (HBV) infection in the United States. Its HBV product pipeline consists of imdusiran (AB-729), a proprietary subcutaneously-delivered RNAi therapeutic product candidate that suppresses all HBV antigens, including HBsAg expression. The company’s research and development programs include AB-101, an oral PD-L1 inhibitor to reawaken patients’ HBV-specific immune system; and small molecule antiviral medicines to treat coronaviruses, including COVID-19. It has licensing agreements with Gritstone Oncology, Inc; Alnylam Pharmaceuticals, Inc.; Qilu Pharmaceuticals Co, Ltd; Assembly Biosciences, Inc.; Acuitas Therapeutics, Inc.; and Antios Therapeutics, Inc. Arbutus Biopharma Corporation also has a clinical collaboration agreement with Barinthus Biotherapeutics plc to evaluate VTP-300. The company was formerly known as Tekmira Pharmaceuticals Corporation and changed its name to Arbutus Biopharma Corporation in July 2015. Arbutus Biopharma Corporation is headquartered in Warminster, Pennsylvania.