New York, April 28, 2015 -- Moody's Investors Service assigned a rating of Baa1 to the new senior unsecured note issuance of Amgen Inc. ("Amgen"). Moody's also assigned ratings to the company's multi-seniority shelf registration. There are no changes to the existing ratings of Amgen including the Baa1 senior unsecured long-term rating and the Prime-2 rating on short-term obligations. The rating outlook is stable.

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