ALKS: Financial results

Item 2.02 Results of Operatio ns and Financial Condition. On July 28, 2026, Alkermes plc (the “Company”) announced financial results for the three and six months ended June 30, 2026 and updated certain financial expectations for the year ending December 31, 2026. Copies of the related press release and the investor presentation to be displayed during the Company’s conference call on July 28, 2026 discussing such financial results and expectations are furnished herewith as Exhibit 99.1 and Exhibit 99.2, respectively. This information, including Exhibits 99.1 and 99.2, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01 Financial Sta tements and Exhibits. (d) Exhibits EXHIBIT INDEX Exhibit No. Description 99.1 Press release issued by Alkermes plc on July 28, 2026 announcing financial results for the three and six months ended June 30, 2026 and financial expectations for the year ending December 31, 2026. 99.2 Investor presentation to be displayed by Alkermes plc on July 28, 2026. 104 Cover page interactive data file (embedded within the Inline XBRL document). 2 SIGNA TURE 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. ALKERMES PLC Date: July 28, 2026 By: /s/ Joshua Reed Joshua Reed Senior Vice President, Chief Financial Officer (Principal Financial Officer) 3