Gilead Sciences, Inc., incorporated on June 22, 1987, is a research-based biopharmaceutical company. The Company focuses on the discovery, development, and commercialization of medicines in areas of unmet medical need. The Company's principal areas of focus include human immunodeficiency virus (HIV), liver diseases, such as chronic hepatitis C virus (HCV) infection and chronic hepatitis B virus (HBV) infection, cardiovascular health, hematology/oncology, and inflammation/respiratory illness.