Equity (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Summarizes the Aggregate Number of Stock Options And Restricted Stock Unit

The following table summarizes the aggregate number of stock options and restricted stock units, or RSUs, outstanding under the Amarin Corporation plc 2020 Stock Incentive Plan, or the 2020 Plan, as of March 31, 2022:

	March 31, 2022
Outstanding stock options		19,639,003
% of outstanding shares on a fully diluted basis		5	%
Outstanding RSUs		15,369,386
% of outstanding shares on a fully diluted basis		4	%

Summary of Equity Awards Activity

The following table represents equity awards activity during the three months ended March 31, 2022 and 2021:

	For the Three Months Ended March 31,
	2022		2021
Common shares issued for stock option exercises		10,602		783,320
Gross and net proceeds from stock option exercises	$	30,000	$	2,059,000
Common shares issued in settlement of vested RSUs		493,381		940,977
Shares retained for settlement of employee tax obligations ─ RSUs		161,083		365,463
Common shares issued in settlement of vested Performance-Based RSUs (1)		—		1,506,428
Shares retained for settlement of employee tax obligations ─ Performance-Based RSUs		—		638,502

(1)Performance-based RSUs vested in connection with the achievement of certain regulatory and sales performance conditions associated with the REDUCE-IT clinical trial and subsequent revenue growth. These performance-based RSUs have fully vested as of August 2021.