Gilead Sciences, Inc. is a biopharmaceutical company that is focused on advancing medicines to prevent and treat diseases, including human immunodeficiency virus (HIV), viral hepatitis and cancer. The Company's portfolio of products and pipeline of investigational drugs includes treatments for HIV/acquired immune deficiency syndrome (AIDS), COVID-19, liver diseases, hematology/oncology/cell therapy and other. Its products for HIV/AIDS patients include Biktarvy, Descovy, Odefsey, Genvoya, Stribild, Complera/Eviplera, Truvada and Atripla. It offers Veklury to patients with COVID-19. The Company's products for patients with liver diseases include Vemlidy, Epclusa, Harvoni, Viread and Vosevi. Its products under hematology/oncology/cell therapy include Yescarta, Tecartus, Trodelvy and Zydelig. Other products include Letairis, Ranexa and AmBisome. Its products for various inflammation/respiratory diseases include Cayston and Tamiflu. The Company operates in more than 335 countries worldwide.