Alkermes plc. — Director's Dealing 2025

Feb 14, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Alkermes plc. (ALKS)
CIK: 0001520262
Period of Report: 2025-02-12

Reporting Person: Hopkinson Craig C. (EVP R&D, Chief Medical Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-12	Ordinary Shares	M	87566	$20.03	Acquired	151166	Direct
2025-02-12	Ordinary Shares	M	111630	$19.34	Acquired	262796	Direct
2025-02-12	Ordinary Shares	S	171813	$32.6914	Disposed	90983	Direct
2025-02-12	Ordinary Shares	S	33108	$33.269	Disposed	57875	Direct
2025-02-13	Ordinary Shares	M	108833	$31.93	Acquired	166708	Direct
2025-02-13	Ordinary Shares	M	35586	$24.59	Acquired	202294	Direct
2025-02-13	Ordinary Shares	S	35586	$34.0217	Disposed	166708	Direct
2025-02-13	Ordinary Shares	S	108833	$36.0185	Disposed	57875	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-12	Employee Stock Option (Right to Buy)	$20.03	M	87566	Disposed	2030-02-20	Ordinary Shares (87566)	Direct
2025-02-12	Employee Stock Option (Right to Buy)	$19.34	M	111630	Disposed	2031-02-22	Ordinary Shares (111630)	Direct
2025-02-13	Employee Stock Option (Right to Buy)	$31.93	M	108833	Disposed	2029-02-21	Ordinary Shares (108833)	Direct
2025-02-13	Employee Stock Option (Right to Buy)	$24.59	M	35586	Disposed	2032-02-18	Ordinary Shares (35586)	Direct

Footnotes

F1: This option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 12/14/2023.

F2: This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 12/14/2023.

F3: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $32.00 to $32.9998. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.

F4: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $33.00 to $33.52. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.

F5: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $34.00 to $34.07. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.

F6: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $36.00 to $36.05. Full information regarding the number of shares sold at each separate price can be provided to the issuer, any security holder of the issuer or the SEC staff upon request.

F7: These options are fully vested in accordance with their terms.

F8: Shares underlying the stock option vest and become exercisable in four equal annual installments commencing on 2/22/2022.

F9: Shares underlying the stock option vest and become exercisable in four equal annual installments commencing on 2/18/2023.