Gilead Sciences, Inc. is a biopharmaceutical company, which engages in the research, development, and commercialization of medicines in areas of unmet medical need. The company is headquartered in Foster City, California and currently employs 17,600 full-time employees. The firm is engaged in advancing medicines to prevent and treat life-threatening diseases, including human immunodeficiency virus (HIV), viral hepatitis, COVID-19, cancer and inflammation. The company is focused on discovering, developing and delivering medicines to address unmet medical needs in virology, oncology and other therapeutic areas. Its portfolio of marketed products includes Biktarvy, Genvoya, Descovy, Complera/Eviplera, Symtuza, Truvada, Stribild, Sunlenca, Epclusa, Vemlidy, Harvoni, Viread, Livdelzi, Veklury, Yescarta, Tecartus, Trodelvy, AmBisome, and Letairis. Its product candidates include Bulevirtide, Lenacapavir, Axicabtagene ciloleucel, Anitocabtagene autoleucel, Sacituzumab govitecan-hziy, and Domvanalimab and zimberelimab. Biktarvy is an oral formulation dosed once a day for the treatment of HIV-1 infection in certain patients. The company operates in more than 35 countries worldwide.