Insider Transaction Report for Richard Gaynor at Alkermes plc.

Richard Gaynor, a director at Alkermes plc., reported a series of transactions on May 20-21, 2026. On May 20, Gaynor acquired 11,538 non-qualified stock options with an exercise price of $36.98 and 5,409 restricted stock units. On May 21, he acquired 6,142 ordinary shares and disposed of 1,475 ordinary shares at $36.95 per share. Additionally, 6,142 restricted stock units were disposed of. Following these transactions, Gaynor holds 37,226 ordinary shares directly. The stock options vest on May 20, 2027, and the restricted stock units also vest on May 20, 2027, with one award fully vested as per footnote F4.