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    PUBLIC DOCUMENT COUNT:		55
    CONFORMED PERIOD OF REPORT:	20200113
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20200113
    DATE AS OF CHANGE:		20200113

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    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Alkermes plc.
    		CENTRAL INDEX KEY:			0001520262
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				981007018
    		FISCAL YEAR END:			1231

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    		STREET 2:		1 BURLINGTON ROAD
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    		DATE OF NAME CHANGE:	20110509
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