Where is Amgen headquartered?
Amgen is headquartered in Thousand Oaks, CA. Its footprint includes major operating, manufacturing, commercial, R&D, laboratory, technology, clinical, or distribution hubs across the United States and international markets.
- HQ
- Thousand Oaks, CA
- HQ address
- One Amgen Center Drive, Thousand Oaks, CA 91320
- Offices
- Thousand Oaks, CA; South San Francisco, CA; Cambridge, MA; Tampa, FL
- Founded
- 1980
- Employees
- 28,000+
- Largest hub
- Thousand Oaks, CA
Amgen office locations
Amgen's public footprint includes headquarters and major operating hubs used for executive, commercial, clinical, manufacturing, distribution, laboratory, or technology work.
- Thousand Oaks, CA· Headquarters
- South San Francisco, CA· Office
- Cambridge, MA· Office
- Tampa, FL· Office
- Dublin, Ireland· Office
- Breda, Netherlands· Office
- Singapore· Office
Where is Amgen's headquarters?
Amgen's headquarters is listed as Thousand Oaks, CA, with a public headquarters address of One Amgen Center Drive, Thousand Oaks, CA 91320. Executive, investor, legal, finance, and enterprise procurement routes are usually tied to this corporate center even when the operational buyer sits elsewhere.
What other offices does Amgen have?
The footprint includes Thousand Oaks, CA, South San Francisco, CA, Cambridge, MA, Tampa, FL, Dublin, Ireland, Breda, Netherlands, Singapore. For healthcare companies, these locations often split by business-unit leadership, R&D, manufacturing, distribution, commercial teams, technology, clinical operations, laboratory operations, and international market coverage.
What Amgen's office footprint means for territory planning
Territory planning should not treat the headquarters as the only buyer location. Field events and account mapping should follow business-unit hubs, hospital or clinic markets, laboratory and manufacturing nodes, technology centers, and executive travel patterns. Time-zone coverage matters because approvals can involve stakeholders across multiple regions.
As of June 2026.Sources:Amgen websiteAmgen annual reportsAmgen contact
Amgen — frequently asked questions
