Equity

6 Months Ended

Jun. 30, 2023

Equity [Abstract]

Equity

(6) Equity

Common Stock

During the six months ended June 30, 2023 and 2022, in addition to ordinary shares issued as described in Incentive Equity Awards below, the Company issued 205,861 and 265,214 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, 2023:

	June 30, 2023
Outstanding stock options		16,000,158
% of outstanding shares on a fully-diluted basis		4	%
Outstanding RSUs		14,902,947
% of outstanding shares on a fully-diluted basis		3	%

The following table represents equity awards activity during the six months ended June 30, 2023 and 2022:

	Six months ended June 30,
	2023		2022
Common shares issued for stock option exercises		1,238,263		25,247
Gross and net proceeds from stock option exercises	$	1,878,000	$	49,000
Common shares issued in settlement of vested RSUs		3,037,583		681,216
Shares retained for settlement of employee tax obligations ─ RSUs		851,549		222,634
Common shares issued in settlement of vested Performance-based RSUs (1)		277,607		—
Shares retained for settlement of employee tax obligations ─ Performance-based RSUs		120,214		—

(1)Performance-based RSUs vested in connection with the achievement of certain sales performance conditions on February 21, 2023. These performance-based RSUs will vest over a three-year period based on continuous service from the grant date.

In July 2023, in connection with the implementation of a retention program, the Company granted a total of 3,978,300 stock options to employees under the 2020 Plan. The options vest 50% on both January 1, 2024 and January 1, 2025, respectively.

In February 2023, the Company granted a total of 7,775,850 RSUs and 4,297,500 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 in February 2023, the Company granted a total of 1,368,800 RSUs to employees under the 2020 Plan that vest upon the achievement of specified sales and operational performance conditions.

In June 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.

In February 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 in February 2022, the Company granted a total of 1,089,500 RSUs to employees under the 2020 Plan that vest upon the achievement of specified sales and operational performance conditions.

In January 2022 and May 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 vested 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.