UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): February 3, 2023

ALKERMES PUBLIC LIMITED COMPANY

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: + 353-1-772-8000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01 Other Events.

On February 3, 2023, Alkermes plc (the “Company”) received a notice from Sarissa Capital Offshore Master Fund LP of its intention to nominate three director candidates for election to the Company’s board of directors at the Company’s 2023 annual general meeting of shareholders.

Important Additional Information and Where to Find It

The Company intends to file a definitive proxy statement, accompanying WHITE proxy card and other relevant documents with the U.S. Securities and Exchange Commission (“SEC”) in connection with the solicitation of proxies for the Company’s 2023 annual general meeting of shareholders. BEFORE MAKING ANY VOTING DECISION, SHAREHOLDERS OF THE COMPANY ARE URGED TO READ ALL RELEVANT DOCUMENTS FILED WITH OR FURNISHED TO THE SEC, INCLUDING THE COMPANY’S DEFINITIVE PROXY STATEMENT AND ANY AMENDMENTS AND SUPPLEMENTS THERETO, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. Investors and shareholders will be able to obtain a copy of the definitive proxy statement and other documents filed by the Company with the SEC free of charge from the SEC’s website at www.sec.gov. In addition, copies will be available at no charge by visiting the “Investors” section of the Company’s website at www.alkermes.com, as soon as reasonably practicable after such materials are filed with, or furnished to, the SEC.

Certain Information Regarding Participants in the Solicitation

The Company, its directors and certain of its executive officers are participants in the solicitation of proxies from shareholders in respect of the Company’s 2023 annual general meeting of shareholders. Information regarding the names of such participants and their respective interests in the Company, by security holdings or otherwise, is set forth in the Company’s Form 10-K for the year ended December 31, 2021, filed with the SEC on February 16, 2022 and amended by a Form 10-K/A filed with the SEC on April 29, 2022; the Company’s definitive proxy statement for the Company’s 2022 annual general meeting of shareholders, filed with the SEC on June 6, 2022; the Company’s Current Reports on Form 8-K filed with the SEC from time to time; and in Initial Statements of Beneficial Ownership on Form 3 or Statements of Change in Ownership on Form 4 filed with the SEC from time to time. These documents can be obtained free of charge from the sources indicated above.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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