X0306 4 2022-01-31 false 0000897448 AMARIN CORP PLC\UK AMRN 0001770259 Berg Aaron C/O AMARIN PHARMA, INC. 440 US HIGHWAY 22 BRIDGEWATER NJ 08807 false true false false EVP, President US Ordinary Shares 2022-01-31 4 M false 12733.00 A 375751.00 D Restricted Stock Units 0.00 2022-01-31 4 M false 12733.00 0.00 D Ordinary Shares 12733.00 0.00 D The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share. On February 1, 2019, the Reporting Person was granted 38,200 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan. These RSUs vest in three equal installments on each of January 31, 2020, January 31, 2021 and January 31, 2022. The third and final vesting event occurred on January 31, 2022. Not applicable. Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion. As of the date of this Form 4, the Reporting Person owns or holds the right to acquire an aggregate of 1,488,032 Ordinary Shares of the Issuer in the form of Ordinary Shares, stock options and RSUs outstanding under the Issuer's stock incentive plans, including but not limited to certain performance-based RSUs that are earned only if certain pre-defined operational milestones are achieved and, in certain cases, then vest only if the recipient remains with the company for an extended period of time. /s/ Michael W. Kalb, by power of attorney 2022-02-02