AMARIN CORP PLC\UK — Director's Dealing 2019

Jul 3, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AMARIN CORP PLC\UK (AMRN)
CIK: 0000897448
Period of Report: 2019-07-02

Reporting Person: Berg Aaron (CHIEF COMMERCIAL OFFICER)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-07-02	Ordinary Shares	M	69564	$2.50	Acquired	105915	Direct
2019-07-02	Ordinary Shares	S	50000	$20.4616	Disposed	55915	Direct
2019-07-02	Ordinary Shares	S	19564	$21.42	Disposed	36351	Direct
2019-07-03	Ordinary Shares	M	29250	$2.80	Acquired	65601	Direct
2019-07-03	Ordinary Shares	S	29250	$22.6406	Disposed	36351	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-07-02	Stock Option (Right to Buy)	$2.50	M	69564	Disposed	2025-07-06	Ordinary Shares (69564)	Direct
2019-07-03	Stock Option (Right to Buy)	$2.80	M	29250	Disposed	2028-05-01	Ordinary Shares (29250)	Direct

Footnotes

F1: The option exercises and sale transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.

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

F3: Please see the section title "Remarks" below for additional information.

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.32 to $20.675, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.62 to $22.70, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

F6: On July 6, 2015, the Reporting Person was granted an option to purchase 400,000 Ordinary Shares under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). The shares subject to this option shall vest and become exercisable in 48 equal monthly installments on the last day of each month that began on July 31, 2015.

F7: On May 1, 2018, the Reporting Person was granted an option to purchase 117,000 Ordinary Shares under the Plan. The shares subject to this option shall vest as follows: 25% of the total number of underlying shares shall vest on May 1, 2019, and the remaining 75% of the underlying shares shall vest ratably over the subsequent 36 months.