Gilead Sciences is a leading American biopharmaceutical company that focuses on discovering, developing, and commercializing innovative medicines to address unmet medical needs. Founded in 1987 and headquartered in Foster City, California, Gilead is known for its work in antiviral therapies, particularly for HIV, hepatitis B, hepatitis C, and influenza. Over the years, the company has expanded its research into oncology, inflammation, and other therapeutic areas. Gilead emphasizes scientific innovation, global health impact, and patient access, aiming to improve the quality of life for millions of people worldwide through its advanced treatments and therapies.