AMARIN CORP PLC\UK — Director's Dealing 2023

Mar 8, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMARIN CORP PLC\UK (AMRN)
CIK: 0000897448
Period of Report: 2023-02-28

Reporting Person: Berg Aaron (EVP, President US)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-28	Ordinary Shares	M	16333	—	Acquired	518478	Direct
2023-02-28	Ordinary Shares	F	7718	$2.03	Disposed	510760	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-28	Restricted Stock Units	$0.00	M	16333	Disposed		Ordinary Shares (16333)	Direct

Footnotes

F1: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2: On March 2, 2020, the Reporting Person was granted 49,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan. These RSUs vest in three equal installments on each of February 28, 2021, February 28, 2022 and February 28, 2023. The third and final vesting event occurred on February 28, 2023.

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: Please see the section titled "Remarks" below for additional information.

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