ALKERMES PLC

Ticker: ALKS CUSIP: G01767105 Class: Common Stock

IRIDIAN ASSET MANAGEMENT LLC/CT's Holding History (CIK: 0001033427)

Note: Option positions (PUT/CALL) are excluded.

Q3 2021

Shares 22,731 Value ($000) $701 Avg Close $28.25 Range $23.11 - $32.53

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	22,731	$701	$28.25	$23.11 - $32.53