Equity

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Equity

(6) Equity

Common Stock

During the six months ended June 30, 2022 and 2021, in addition to ordinary shares issued as described in Incentive Equity Awards below, the Company issued 265,214 and 226,402 ordinary shares, respectively, under the Amarin Corporation plc 2017 Employee Stock Purchase Plan.

Incentive Equity Awards

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 June 30, 2022:

	June 30, 2022
Outstanding stock options		19,995,396
% of outstanding shares on a fully diluted basis		5	%
Outstanding RSUs		15,023,937
% of outstanding shares on a fully diluted basis		3	%

The following table represents equity awards activity during the six months ended June 30, 2022 and 2021:

	For the Six Months Ended June 30,
	2022		2021
Common shares issued for stock option exercises		25,247		810,459
Gross and net proceeds from stock option exercises	$	49,000	$	2,134,000
Common shares issued in settlement of vested RSUs		681,216		1,031,171
Shares retained for settlement of employee tax obligations ─ RSUs		222,634		398,214
Common shares issued in settlement of vested Performance-Based RSUs (1)		—		1,762,244
Shares retained for settlement of employee tax obligations ─ Performance-Based RSUs		—		747,955

(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.

On June 27, 2022, the Company granted a total of 661,459 RSUs and 817,873 stock options to members of the Company’s Board of Directors under the 2020 Plan and in accordance with the Company's non-employee Director compensation policy. The RSUs vest in equal installments over a three-year period upon the earlier of the anniversary of the grant date or the Company’s annual general meeting of shareholders in such anniversary year, and are subject to deferred settlement upon the Director’s separation of service with the Company. The stock options vest in full upon the earlier of the one-year anniversary of the grant date or the Company’s annual general meeting of shareholders in such anniversary year. Upon termination of service to the Company or upon a change of control as defined in the 2020 Plan, each Director shall be entitled to a payment equal to the fair market value of one share of Amarin common stock per award vested or granted, respectively, which is required to be made in shares.

On February 4, 2022, the Company granted a total of 5,987,500 RSUs and 1,976,600 stock options to employees under the 2020 Plan. The RSUs vest annually over a three-year period and the stock options vest quarterly over a four-year period with a one-year cliff vesting. Also on February 4, 2022, the Company granted a total of 1,089,500 RSUs to certain employees under the 2020 Plan that vest upon the achievement of specified sales and operational performance conditions.

On January 10, 2022 and May 16, 2022, the Company granted a total of 81,082 and 360,000 RSUs, respectively, and 103,569 and 447,438 stock options, respectively, to newly appointed members of the Company’s Board of Directors under the 2020 Plan and in accordance with the Company's non-employee Director compensation policy. The RSUs vest in equal installments over a three-year period upon the anniversary of the grant date, and are subject to deferred settlement upon the Director’s separation of service with the Company. The stock options vest in full upon the one-year anniversary of the grant date. Upon termination of service to the Company or upon a change of control as defined in the 2020 Plan, each Director shall be entitled to a payment equal to the fair market value of one share of Amarin common stock per award vested or granted, respectively, which is required to be made in shares.

On June 14, 2021, the Company granted a total of 218,000 RSUs and 278,271 stock options to members of the Company’s Board of Directors under the 2020 Plan and in accordance with the Company's non-employee Director compensation policy. The RSUs vest in equal installments over a three-year period upon the earlier of the anniversary of the grant date or the Company’s annual general meeting of shareholders in such anniversary year, and are subject to deferred settlement upon the Director’s separation of service with the Company. The stock options vest in full upon the earlier of the one-year anniversary of the grant date or the Company’s annual

general meeting of shareholders in such anniversary year. Upon termination of service to the Company or upon a change of control as defined in the 2020 plan, each Director shall be entitled to a payment equal to the fair market value of one share of Amarin common stock per award vested or granted, respectively, which is required to be made in shares.

On January 4, 2021, the Company granted a total of 3,265,700 RSUs and 3,100,200 stock options to employees under the 2020 Plan. The RSUs vest annually over a three-year period and the stock options vest quarterly over a four-year period with a one-year cliff vesting. Also on January 4, 2021, the Company granted a total of 1,345,800 RSUs to certain employees under the 2020 Plan that vest upon the achievement of specified sales and operational performance conditions.