Amgen is an American multinational biopharmaceutical company and one of the world's largest independent biotechnology companies. In 2019, the company's largest selling products were Enbrel, a tumor necrosis factor blocker used in the treatment of rheumatoid arthritis and other autoimmune diseases, and Neulasta, an immunostimulator used to prevent infections in patients undergoing cancer chemotherapy.

Headquarters: Thousand Oaks, California, USA

Number of Employees: 25,200