Gilead Sciences, Inc. is a leading American biopharmaceutical company based in Foster City, California, dedicated to the research and development of innovative antiviral therapies for a range of infectious diseases, including HIV, hepatitis B, hepatitis C, and influenza. The company's notable products, such as Harvoni and Sovaldi, have transformed the treatment landscape for chronic hepatitis C and are at the forefront of its extensive drug portfolio. Gilead continues to leverage its pioneering research capabilities to address unmet medical needs and expand its therapeutic offerings, positioning itself as a crucial player in global healthcare.