Form 4 Filing for Alkermes plc. by Frank Anders Wilson

This filing details transactions by Frank Anders Wilson, a director at Alkermes plc. On May 20, 2026, Wilson acquired 11,538 non-qualified stock options with an exercise price of $36.98 and 5,409 restricted stock units (RSUs). The RSUs vest on the earlier of the one-year anniversary of the grant date or the next annual general meeting occurring at least 50 weeks after the grant date. On May 21, 2026, Wilson acquired 6,142 ordinary shares of Alkermes plc. and disposed of 1,475 ordinary shares at $36.95 per share. Additionally, on the same day, 6,142 RSUs vested and were disposed of. Following these transactions, Wilson holds 37,226 ordinary shares directly and has 35,751 ordinary shares directly. The filing was signed on May 22, 2026, by Shantale Greenson, attorney-in-fact for Frank Anders Wilson.