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Equity (Tables)
 9 Months Ended
Sep. 30, 2023
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 September 30, 2023:

 

 

September 30, 2023

 

Outstanding stock options

 

27,796,736

 

% of outstanding shares on a fully-diluted basis

 

6

%

Outstanding RSUs

 

13,676,317

 

% of outstanding shares on a fully-diluted basis

 

3

%
Summary of Euity Awards Activity

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

 

 

Nine months ended September 30,

 

 

2023

 

 

2022

 

Common shares issued for stock option exercises

 

1,239,763

 

 

 

33,303

 

Gross and net proceeds from stock option exercises

$

1,878,000

 

 

$

59,000

 

Common shares issued in settlement of vested RSUs

 

3,624,207

 

 

 

1,458,806

 

Shares retained for settlement of employee tax obligations ─ RSUs

 

1,063,987

 

 

 

344,318

 

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

 

342,040

 

 

 

—

 

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

 

143,120

 

 

 

—

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