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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Summary of Stock-Based Compensation Expense

The stock-based compensation expense included in the Company’s condensed statement of operations and comprehensive loss for the three and six months ended June 30, 2023 and 2022 is as follows (in thousands):

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

2023

 

 

2022

 

 

2023

 

 

2022

 

Research and development

 

$

2,420

 

 

$

2,181

 

 

$

4,431

 

 

$

3,736

 

General and administrative

 

 

3,103

 

 

 

2,606

 

 

 

5,929

 

 

 

4,628

 

 

$

5,523

 

 

$

4,787

 

 

$

10,360

 

 

$

8,364

 

 

Summary of Stock Option Activity under 2019 Plan and 2021 Plan

The following table summarizes stock option activity under the 2019 Plan and the 2021 Plan for the six months ended June 30, 2023.

 

 

 

Shares

 

Outstanding at December 31, 2022

 

 

22,865,714

 

Granted

 

 

11,428,470

 

Exercised

 

 

(171,023

)

Forfeited or canceled

 

 

(914,677

)

Outstanding at June 30, 2023

 

 

33,208,484

 

Exercisable at June 30, 2023

 

 

6,505,491