Gilead Sciences, Inc., a biopharmaceutical company, discovers, develops, and commercializes medicines in the areas of unmet medical need in the United States, Europe, and internationally. The company offers Biktarvy, Genvoya, Descovy, Odefsey, Complera/Eviplera, Symtuza, Truvada, Stribild, and Sunlenca products for the treatment of HIV-1 infection; Veklury, an injection for intravenous use, for the treatment of COVID-19; and Epclusa, Vemlidy, Harvoni, Viread, and Livdelzi for the treatment of liver disease. It also provides Yescarta, Tecartus, and Trodelvy products for the treatment of oncology; Letairis, an oral formulation for the treatment of pulmonary arterial hypertension; and AmBisome, a liposomal formulation for the treatment of serious invasive fungal infections. In addition, the company’s portfolio of market products includes Atripla, Cayston, Descovy for PrEP, Emtriva, Hepcludex, Hepsera, Jyseleca, Sovaldi, Truvada for PrEP, Tybost, Vosevi, and Zydelig. It has collaboration agreements with Arcellx, Inc.; Merck & Co., Inc.; Arcus Biosciences, Inc.; Galapagos NV; Janssen Sciences Ireland Unlimited Company; Japan Tobacco, Inc.; Everest Medicines; Abingworth LLP; and LEO Pharma to develop, manufacture, and commercialize the small molecule oral STAT6 program. The company was incorporated in 1987 and is headquartered in Foster City, California.