Atea Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, focused on discovering, developing, and commercializing antiviral therapeutics for patients suffering from viral infections. Its lead product candidate is AT-527, a novel antiviral agent that is in Phase II clinical trial for the treatment of patients with COVID-19. The company also develops AT-752, an oral purine nucleoside prodrug product candidate, which has completed Phase Ia clinical trial for the treatment of dengue; AT-787, a co-formulated, oral, pan-genotypic fixed dose combination of AT-527 and AT-777 that is in Phase I/IIa clinical trial for the treatment of chronic hepatitis C; and AT-889, an investigational, second-generation nucleoside pyrimidine prodrug and other compounds for the treatment of respiratory syncytial virus. It has a Roche License Agreement with F. Hoffmann-La Roche Ltd and Genentech, Inc. for development and commercialization related to AT-527 outside of the United States. The company was incorporated in 2012 and is headquartered in Boston, Massachusetts.