AMARIN CORP PLC\UK — Director's Dealing 2021

Aug 4, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMARIN CORP PLC\UK (AMRN)
CIK: 0000897448
Period of Report: 2021-08-02

Reporting Person: Berg Aaron (N/A)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-02	Stock Option (Right to Buy)	$4.22	A	96750.00	Acquired	2031-08-02	Ordinary Shares (96750.00)	Direct
2021-08-02	Restricted Stock Units	$0.00	A	71650.00	Acquired		Ordinary Shares (71650.00)	Direct

Footnotes

F1: On August 2, 2021, the Reporting Person was granted an option to purchase 96,750 Ordinary Shares under the Amarin Corporation plc 2020 Stock Incentive Plan (the "2020 Plan"). The shares subject to this option shall vest and become exercisable over four years, with 25% to vest on the first anniversary of the grant date and the balance to vest ratably over the subsequent 12 calendar quarters on the last day of each October, January, April and July.

F2: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F3: Each restricted stock unit ("RSU") represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F4: On August 2, 2021, the Reporting Person was granted 71,650 RSUs under the 2020 Plan. These RSUs vest in three equal installments on each of July 31, 2022, July 31, 2023 and July 31, 2024.

F5: Not applicable.