UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE
SECURITIES
EXCHANGE ACT OF 1934 (Amendment No. )

Filed by the Registrant þ

Filed by a Party other than the Registrant o

Check the appropriate box:

o		Preliminary Proxy Statement
o		Confidential, for Use of the Commission Only (as permitted by Rule 14a- 6(e)(2))
o		Definitive Proxy Statement
o		Definitive Additional Materials
þ		Soliciting Material Pursuant to § Rule 14a-12

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):
þ		No fee required.
o		Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

			(1	)		Title of each class of securities to which transaction applies:
								NOT APPLICABLE
			(2	)		Aggregate number of securities to which transaction applies:
								NOT APPLICABLE
			(3	)		Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
								NOT APPLICABLE
			(4	)		Proposed maximum aggregate value of transaction:
								NOT APPLICABLE
			(5	)		Total fee paid:
								NOT APPLICABLE
o			Fee paid previously with preliminary materials:
								NOT APPLICABLE

o		Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

			(1	)		Amount Previously Paid:
								NOT APPLICABLE
			(2	)		Form, Schedule or Registration Statement No.:
								NOT APPLICABLE
			(3	)		Filing Party:
								NOT APPLICABLE
			(4	)		Date Filed:
								NOT APPLICABLE

This filing relates to a planned merger (“Merger”) between Alkermes, Inc. and the global drug delivery technologies business of Elan (known as “EDT”) (such combination, the “Business Combination”) pursuant to a Business Combination Agreement and Plan of Merger (the “Business Combination Agreement”) by and among Elan Corporation, plc (“Elan”), a public limited company incorporated in Ireland, Antler Science Two Limited, a private limited company incorporated in Ireland, Elan Science Four Limited, a private limited company incorporated in Ireland, EDT Pharma Holdings Limited, a private limited company incorporated in Ireland, EDT US Holdco, Inc., a Delaware corporation, Antler Acquisition Corp., a Pennsylvania corporation and direct wholly owned subsidiary of U.S. Holdco, and Alkermes, Inc., a Pennsylvania corporation. The businesses will be combined under New Alkermes, a new holding company incorporated in Ireland that will be re-registered as a public limited company, and renamed Alkermes, plc, at or prior to the completion of the Business Combination. The Business Combination Agreement is on file with the Securities and Exchange Commission as an exhibit to the Current Report on Form 8-K filed by Alkermes, Inc. on May 9, 2011.

Alkermes has prepared an investor presentation which was made available beginning on May 12, 2011 regarding the matters described above. A copy of the investor presentation is attached hereto and is incorporated herein by reference.

Forward Looking Statements

Information set forth herein contains “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995, which involve a number of risks and uncertainties. Alkermes cautions readers that any forward-looking information is not a guarantee of future performance and that actual results could differ materially from those contained in the forward-looking information. Such forward-looking statements include, but are not limited to, statements about the benefits of the business combination transaction involving EDT and Alkermes, including future financial and operating results, the combined company’s plans, objectives, expectations (financial or otherwise) and intentions and other statements that are not historical facts.

The following factors, among others, could cause actual results to differ from those set forth in the forward-looking statements: the ability to obtain regulatory approvals of the transaction on the proposed terms and schedule; the failure of Alkermes’ stockholders to approve the transaction; the outcome of pending or potential litigation or governmental investigations; the risk that the businesses will not be integrated successfully or such integration may be more difficult, time-consuming or costly than expected; uncertainty of the expected financial performance of Alkermes plc following completion of the proposed transaction; Alkermes plc’s ability to achieve the cost savings and synergies contemplated by the proposed transaction within the expected time frame; disruption from the proposed transaction making it more difficult to conduct business as usual or maintain relationships with customers, employees or suppliers; and the calculations of, and factors that may impact the calculations of, the acquisition price in connection with the proposed merger and the allocation of such acquisition price to the net assets acquired in accordance with applicable accounting rules and methodologies. Additional information and other factors are contained in Alkermes’ filings with the Securities and Exchange Commission, including Alkermes’ Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, and other SEC filings, which are available at the SEC’s web site http://www.sec.gov. Alkermes disclaims any obligation to update and revise statements contained in these materials based on new information or otherwise.

Important Additional Information and Where to Find It

This communication does not constitute an offer to sell, or the solicitation of an offer to sell, or the solicitation of an offer to subscribe for or buy, any securities nor shall there be any sale, issuance or transfer of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.

In connection with the proposed merger, Alkermes plc will file with the SEC a registration statement on Form S-4 that will include a preliminary prospectus regarding the proposed merger and Alkermes will file with the SEC a proxy statement in respect of the proposed merger. After the registration statement has been declared effective by the SEC, a definitive proxy statement/prospectus will be mailed to Alkermes’ stockholders in connection with the proposed merger. INVESTORS ARE URGED TO CAREFULLY READ THE PROXY STATEMENT/PROSPECTUS (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS THERETO) AND OTHER DOCUMENTS RELATING TO THE MERGER FILED WITH THE SEC WHEN THEY BECOME

AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ALKERMES, EDT AND THE PROPOSED MERGER. You may obtain a copy of the registration statement and the proxy statement/prospectus (when available) and other related documents filed by Alkermes and Elan with the SEC regarding the proposed merger as well as other filings containing information about Alkermes, Elan and the merger, free of charge, through the web site maintained by the SEC at www.sec.gov, by directing a request to Alkermes’ Investor Relations department at Alkermes, Inc., 852 Winter Street, Waltham, Massachusetts 02451, Attn: Investor Relations or to Alkermes’ Investor Relations department at (781) 609-6000 or by email to financial@alkermes.com. Copies of the proxy statement/prospectus and the filings with the SEC that will be incorporated by reference in the proxy statement/prospectus can also be obtained, when available, without charge, from Alkermes’ website at www.Alkermes.com under the heading “Investor Relations” and then under the heading “SEC Filings”.

Participants in Solicitation

This communication is not a solicitation of a proxy from any Alkermes shareholder. Alkermes and its directors, executive officers and certain other members of management and employees may, however, be deemed to be participants in the solicitation of proxies in respect of the proposed merger. Information regarding the persons who may, under the rules of the SEC, be considered participants in the solicitation of proxies in respect of the proposed merger will be set forth in the registration statement and the proxy statement/prospectus when it is filed with the SEC. You can find information about Alkermes’ directors and executive officers in its definitive proxy statements filed with the SEC on July 29, 2010. You can obtain free copies of these documents as described above.