Where is Amgen headquarters in the US?

Written by Editorial Team | Last Updated: August 2026

Amgen, one of the world's largest independent biotechnology companies, maintains its global corporate headquarters in Thousand Oaks, California, United States. Situated in the Conejo Valley region of Ventura County, this expansive campus serves as the central nerve center for the company's worldwide research, development, clinical manufacturing, and executive operations. From this primary California headquarters, Amgen coordinates its international network of biopharmaceutical innovation hubs, advanced manufacturing plants, and widespread commercial offices that deliver essential medications for cardiovascular disease, oncology, bone health, and inflammatory conditions to millions of patients globally. The Thousand Oaks location houses the core scientific research laboratories and executive leadership teams driving the company’s ongoing breakthroughs in human therapeutics and genetic engineering technologies.

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