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Equity
 3 Months Ended
Mar. 31, 2024
Equity [Abstract]  
Equity

(6) Equity

Common Stock

There was no common stock activity during the three months ended March 31, 2024 and 2023, except as described in Incentive Equity Awards below.

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 March 31, 2024:

 

 

March 31, 2024

 

Outstanding stock options

 

29,492,168

 

% of outstanding shares on a fully-diluted basis

 

6

%

Outstanding RSUs

 

14,827,995

 

% of outstanding shares on a fully-diluted basis

 

3

%

The following table represents equity awards activity during the three months ended March 31, 2024 and 2023:

 

 

Three months ended March 31,

 

 

2024

 

 

2023

 

Common shares issued for stock option exercises

 

9,500

 

 

 

1,232,263

 

Gross and net proceeds from stock option exercises

$

10,260

 

 

$

1,871,758

 

Common shares issued in settlement of vested RSUs

 

2,651,407

 

 

 

2,270,674

 

Shares retained for settlement of employee tax obligations ─ RSUs

 

990,070

 

 

 

716,438

 

Common shares issued in settlement of vested Performance-based RSUs (1)

 

468,230

 

 

 

244,274

 

Shares retained for settlement of employee tax obligations ─ Performance-based RSUs

 

227,380

 

 

 

111,085

 
(1)
Performance-based RSUs vested in connection with the achievement of certain performance conditions during the year.

In February 2024, the Company granted a total of 6,800,500 RSUs and 2,662,000 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.

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.