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EX-21 13 amgn-ex21_2023.htm SUBSIDIARIES OF THE COMPANY AMGEN INC - Subsidiaries of the Company.
Exhibit 21
AMGEN INC.

The following is a list of subsidiaries of the Company as of December 31, 2023, omitting some subsidiaries which, considered in the aggregate, would not constitute a significant subsidiary.
SUBSIDIARY
(Name under which subsidiary does business)
STATE OR OTHER JURISDICTION OF INCORPORATION OR ORGANIZATION
Amgen (Europe) GmbHSwitzerland
Amgen Australia Pty LtdAustralia
Amgen Canada Inc.Canada
Amgen Fremont Inc.Delaware
Amgen Global Finance B.V.Netherlands
Amgen Global Manufacturing Ltd.United Kingdom
Amgen Global Technology Unlimited CompanyUnited Kingdom
Amgen GmbH GermanyGermany
Amgen Ilaç Ticaret Limited ŞirketiTurkey
Amgen International Holdings Inc.Delaware
Amgen K-A, Inc.Delaware
Amgen K.K.Japan
Amgen Manufacturing, LimitedBermuda
Amgen Rare Disease Holdings Inc.Delaware
Amgen Research (Munich) GmbHGermany
Amgen S.A.S.France
Amgen S.p.A.Italy
Amgen SF, LLCDelaware
Amgen Singapore Holding Pte LtdSingapore
Amgen Singapore Manufacturing Pte. Ltd.Singapore
Amgen Technology (Ireland) Unlimited CompanyIreland
Amgen Technology, LimitedBermuda
Amgen USA Inc.Delaware
Amgen Worldwide Holdings B.V.Netherlands
Amgen, S.A.Spain
BioVex LimitedUnited Kingdom
BioVex, Inc.Delaware
ChemoCentryx, Inc.Delaware
Five Prime Therapeutics Inc.Delaware
Horizon Therapeutics Capital LimitedIreland
Horizon Therapeutics Finance LimitedIreland
Horizon Therapeutics Finance SarlLuxembourg
Horizon Therapeutics Holdings LimitedIreland
Horizon Therapeutics Ireland DACIreland
Horizon Therapeutics LimitedIreland
Horizon Therapeutics Treasury DACIreland
Horizon Therapeutics U.S. Holding LLCDelaware
Horizon Therapeutics USA, Inc.Delaware
HZNP Finance LimitedIreland
Immunex CorporationWashington
Onyx Pharmaceuticals, Inc.Delaware

Exhibit 21
SUBSIDIARY
(Name under which subsidiary does business)
STATE OR OTHER JURISDICTION OF INCORPORATION OR ORGANIZATION
Onyx Therapeutics, Inc.Delaware
Pillartree LimitedIreland
Saga Investments Coöperatief U.A.Netherlands
TeneoBio, Inc.Delaware
TeneoThree, Inc.Delaware
Viela Bio, Inc.Delaware