Atea Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company that discovers, develops, and commercializes oral antiviral therapeutics for patients with serious viral infections. Its lead product candidate is a regimen combining bemnifosbuvir, a nucleotide NS5B inhibitor, and ruzasvir, an NS5A inhibitor, which is in a Phase 3 clinical trial for the treatment of hepatitis C virus (HCV). The company is also developing AT-587, which is in a Phase 1 clinical trial for the treatment of chronic HEV infection, and offers a proprietary platform of nucleosides and nucleotides for virology, medicinal chemistry, and antiviral drug development. Atea has a license agreement with MSD International GmbH for the development, manufacture, and commercialization of ruzasvir, and was incorporated in 2012 with headquarters in Boston, Massachusetts.