AMARIN CORP PLC\UK — Director's Dealing 2021

Aug 10, 2021

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: AMARIN CORP PLC\UK (AMRN)
CIK: 0000897448
Period of Report: 2021-08-10

Reporting Person: Mikhail Karim (Director, President & CEO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Ordinary Shares	23540	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$7.03	2030-07-01	Ordinary Shares (100000)		Direct
Stock Option (Right to Buy)	$5.03	2031-01-04	Ordinary Shares (46000)		Direct
Stock Option (Right to Buy)	$4.97	2031-04-12	Ordinary Shares (290200)		Direct
Restricted Stock Units	$0.00		Ordinary Shares (66666)		Direct
Restricted Stock Units	$0.00		Ordinary Shares (34100)		Direct
Restricted Stock Units	$0.00		Ordinary Shares (215200)		Direct

Footnotes

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

F2: On July 1, 2020, the Reporting Person was granted an option to purchase 100,000 Ordinary Shares under the Amarin Corporation plc 2011 Stock Incentive Plan (the "2011 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 first day of each October, January, April and July.

F3: On January 4, 2021, the Reporting Person was granted an option to purchase 46,000 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 March, June, September and December.

F4: On April 12, 2021, the Reporting Person was granted an option to purchase 290,200 Ordinary Shares under 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 twelfth (12th) day of each July, October, January and April.

F5: Each restricted stock unit ("RSU") represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.

F6: On July 1, 2020, the Reporting Person was granted 100,000 RSUs under the 2011 Plan. These RSUs vest in three equal installments on each of July 1, 2021, July 1, 2022 and July 1, 2023.

F7: Not applicable.

F8: On January 4, 2021, the Reporting Person was granted 34,100 RSUs under the 2020 Plan. These RSUs vest in three equal installments on each of December 31, 2021, December 31, 2022 and December 31, 2023.

F9: On April 12, 2021, the Reporting Person was granted 215,200 RSUs under the 2020 Plan. These RSUs vest in three equal installments on each of April 12, 2022, April 12, 2023 and April 12, 2024.