Insider Transactions of Alkermes plc.

Nancy Lurker, a director at Alkermes plc., reported several transactions on May 20-21, 2026. On May 20, she acquired 11,538 non-qualified stock options with a strike price of $36.98 and 5,409 restricted stock units (RSUs). On May 21, Lurker acquired 6,142 ordinary shares and disposed of 1,475 ordinary shares at $36.95 per share. Following these transactions, her post-transaction holdings include 19,697 ordinary shares from the acquisition and 18,222 ordinary shares after the disposal. The RSUs acquired on May 20 were disposed of on May 21, with the footnote indicating that each RSU represents a contingent right to one ordinary share and that the award was fully vested. Overall, the transactions indicate a net increase in direct ownership of Alkermes plc. ordinary shares.