Form 4 Filing for Nancy Lynn Snyderman MD

Nancy Lynn Snyderman MD, a director at Alkermes plc. (ALKS), reported several transactions on May 20-21, 2026. On May 20, Dr. Snyderman acquired 11,538 Non-Qualified Stock Options and 5,409 Restricted Stock Units (RSUs). These awards are subject to vesting conditions. On May 21, Dr. Snyderman disposed of 6,142 RSUs that were fully vested. Additionally, she acquired 6,142 Ordinary Shares and disposed of 1,475 Ordinary Shares at a price of $36.95 per share. Following these transactions, Dr. Snyderman directly holds 16,870 Ordinary Shares and indirectly holds 20,783 Ordinary Shares through the Snyderman Trust. The RSUs acquired on May 20 vest on the earlier of the one-year anniversary of the grant date or the issuer's next annual general meeting occurring at least 50 weeks after the grant date. The disposed RSUs on May 21 were fully vested.