AMARIN CORP PLC\UK — Director's Dealing 2025

Jun 30, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMARIN CORP PLC\UK (AMRN)
CIK: 0000897448
Period of Report: 2025-06-26

Reporting Person: Berg Aaron (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-26	American Depositary Share	M	75000	—	Acquired	119077	Direct
2025-06-26	American Depositary Share	F	38363	$15.90	Disposed	80714	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-06-26	Stock Option (Right to Buy)	$15.90	A	37500	Acquired	2035-06-26	American Depositary Shares (37500)	Direct
2025-06-26	Restricted Stock Unit	$0.00	A	75000	Acquired		American Depositary Shares (75000)	Direct
2025-06-26	Restricted Stock Unit	$0.00	A	12500	Acquired		American Depositary Shares (12500)	Direct

Footnotes

F1: Effective April 11, 2025, the Issuer implemented a ratio change that one (1) American Depositary Share ("ADS") currently represents twenty (20) Ordinary Shares ("ADS Ratio Change"). Proportionate adjustments were made to the Issuer's outstanding equity awards. The amount of securities reported on this Form 4 reflect the ADS Ratio Change.

F2: On June 26, 2025 the Reporting Person was granted 75,000 RSUs that vested as of the June 26, 2025.

F3: Not applicable.

F4: Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.

F5: On June 26, 2025 the Reporting Person was granted an option to purchase 37,500 American Depositary Shares ("ADS") under the Plan. The shares subject to this option shall vest and become exercisable over eighteen months, with 50% to vest on the first anniversary of the grant date and the remaining balance to vest eighteen months after grant date.

F6: Each RSU represents a contingent right to receive twenty Ordinary Shares or cash in lieu thereof at the Issuer's discretion.

F7: Additionally, award was exercise or conversion of derivative security exempted pursuant to Rule 16b-3.

F8: On June 26, 2025, the Reporting Person was granted 12,500 RSUs that vests in two equal installments on the first anniversary of the grant date and the remaining balance to vest eighteen months after grant date.