On February 1, 2024, the board of directors of Alkermes plc designated Blair C. Jackson, Executive Vice President, Chief Operating Officer of Alkermes Inc., a wholly-owned subsidiary of the Company, as the Company?s interim principal financial officer and Samuel J. Parisi, Vice President, Finance of Alkermes Inc., as the Company?s interim principal accounting officer, in each case while Iain M. Brown, the Company?s principal financial officer and principal accounting officer, is on a medical leave of absence and until such time as Mr. Brown is able to resume his positions as principal financial officer and principal accounting officer. Mr. Jackson, age 51, has served as Executive Vice President, Chief Operating Officer since January 2021, with responsibility for the Company?s global operations, quality, finance, information technology and corporate planning functions. Prior to that, Mr. Jackson served as Senior Vice President, Corporate Planning from July 2018 to January 2021, as Senior Vice President, Business Development from May 2016 to July 2018, and prior to that, in various scientific and corporate roles within the Company.

Mr. Jackson received a Bachelor of Arts in Biochemistry from the University of Calgary, a Bachelor of Arts in Chemical Engineering and a Master of Business Administration from the University of Alberta, and a Master of Science in Chemical Engineering from the Massachusetts Institute of Technology. Mr. Jackson will remain entitled to indemnification under his existing agreements with the Company and Alkermes Inc., and has not otherwise entered into any material plan, contract, arrangement or amendment in connection with this interim appointment. Mr. Parisi, age 49, has served as Vice President, Finance since July 2020.

Prior to that, Mr. Parisi served as Senior Director of Financial Reporting and Compliance from January 2016 to July 2020, and prior to that, in various roles within the finance organization since 2007. Prior to joining Alkermes, Mr. Parisi served as a Certified Public Accountant in the audit practices of UHY LLP from 2005 to 2007 and at KPMG LLP from 1996 to 2004. Mr. Parisi received a Bachelor of Science in Business Administration from the University of Massachusetts Lowell and was formerly a Certified Public Accountant.

In connection with this interim appointment.