Vir Biotechnology, Inc. operates as a clinical-stage immunology company that focuses on combining immunologic insights with cutting-edge technologies to treat and prevent serious infectious diseases. The company is headquartered in San Francisco, California and currently employs 408 full-time employees. The company went IPO on 2019-10-11. Its clinical-stage portfolio includes infectious disease programs for chronic hepatitis delta and chronic hepatitis B infections and multiple dual-masked T-cell engagers across validated targets in solid tumor indications. The company also has a preclinical portfolio of programs across a range of infectious diseases and oncologic malignancies. Tobevibart is an investigational neutralizing monoclonal antibody (mAb) that has been engineered for immune engagement and targets a conserved region on the hepatitis B surface antigen (HBsAg). Elebsiran is an investigational HBV-targeted small interfering RNA (siRNA) that reduces HBsAg. Its pipeline includes VIR-5818, VIR-5500, VIR-5525, and HIV Cure. The company also has rights to the PRO-XTEN masking platform for oncology and infectious disease.