Blair C. Jackson - 22 Feb 2024 Form 4 Insider Report for Alkermes plc. (ALKS)

Role: EVP, Chief Operating Officer
Signature: /s/ Jeffrey Geary, attorney-in-fact for Blair C. Jackson
Issuer symbol: ALKS
Transactions as of: 22 Feb 2024
Net transactions value: -$124,429
Form type: 4
Filing time: 23 Feb 2024, 16:09:13 UTC
Previous filing: 21 Feb 2024
Next filing: 27 Feb 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALKS	Ordinary Shares	Options Exercise		+9,693	+6.6%		157,249	22 Feb 2024	Direct	F1
transaction	ALKS	Ordinary Shares	Tax liability	$124,429	-4,304	-2.7%	$28.91	152,945	22 Feb 2024	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ALKS	Restricted Stock Unit Award	Options Exercise		-9,693	-50%		9,694	22 Feb 2024	Ordinary Shares	9,693		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one ordinary share.
F2	Shares subject to the restricted stock unit award vest in four equal annual installments, commencing on 2/22/2022.