EXHIBIT 21 AMGEN INC. State of Incorporation Subsidiary (Name under which subsidiary does business) or Organization - ------------------------------------------------------ --------------- Amgen AB........................................................ Sweden Amgen Australia Pty Limited..................................... Australia Amgen (Bermuda) Clinical Development, Limited................... Bermuda Amgen (Bermuda) Clinical Development 2, Limited................. Bermuda Amgen (Bermuda) Clinical Development 3, Limited................. Bermuda Amgen (Bermuda) Clinical Development 4, Limited................. Bermuda Amgen (Bermuda) Clinical Development 5, Limited................. Bermuda Amgen (Bermuda) Clinical Development 6, Limited................. Bermuda Amgen (Bermuda) Clinical Development 7, Limited................. Bermuda Amgen (Bermuda) Clinical Development 8, Limited................. Bermuda Amgen (Bermuda) Clinical, Limited............................... Bermuda Amgen (Bermuda) Development, Limited............................ Bermuda Amgen (Bermuda), Limited........................................ Bermuda Amgen--Bio-Farmaceutica, Lda.................................... Portugal Amgen Boulder Development Corporation........................... Colorado Amgen Boulder Production Corporation............................ Colorado Amgen B.V....................................................... The Netherlands Amgen Cambridge Real Estate Holdings Inc........................ Delaware Amgen Canada Inc................................................ Canada Amgen Caribe Corporation........................................ Puerto Rico Amgen (Europe) AG............................................... Switzerland Amgen Europe B.V................................................ The Netherlands Amgen GmbH...................................................... Austria Amgen GmbH...................................................... Germany Amgen Greater China, Ltd........................................ Hong Kong Amgen Holding, Inc.............................................. California Amgen International Inc......................................... Delaware Amgen Kabushiki Kaisha.......................................... Japan Amgen Limited................................................... United Kingdom Amgen N.V....................................................... Belgium Amgen Puerto Rico, Inc.......................................... Delaware Amgen Sales Corporation......................................... Barbados Amgen S.A....................................................... France Amgen, S.A...................................................... Spain Amgen S.p.A..................................................... Italy Kirin-Amgen, Inc................................................ Delaware Synergen B.V.................................................... The Netherlands Synergen Europe, Inc............................................ Colorado