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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Weighted Average Fair Values and Valuation Assumptions

The following table presents, on a weighted-average basis, the assumptions used in the Black-Scholes option-pricing model to determine the grant date fair value of stock options granted:

 

 

Three Months Ended March 31,

 

 

Three Months Ended March 31,

 

 

 

2024

 

 

2023

 

Expected term (in years)

 

 

5.8

 

 

 

5.8

 

Expected volatility

 

 

62.8

%

 

 

69.3

%

Risk-free interest rate

 

 

4.0

%

 

 

3.5

%

Expected dividend yield

 

 

%

 

 

%

 

Summary of Stock Option Activity

The following table summarizes the Company’s stock option activity since December 31, 2023:

 

 

Number of
Shares

 

 

Weighted-
Average
Exercise
Price

 

 

Weighted-
Average
Remaining
Contractual
Term

 

 

Aggregate
Intrinsic
Value

 

 

 

 

 

 

 

 

 

(in years)

 

 

(in thousands)

 

Outstanding at December 31, 2023

 

 

23,065,514

 

 

$

5.08

 

 

 

8.7

 

 

$

24,745

 

Granted

 

 

3,647,000

 

 

$

4.22

 

 

 

 

 

 

 

Exercised

 

 

 

 

$

 

 

 

 

 

 

 

Forfeited

 

 

(348,481

)

 

$

6.05

 

 

 

 

 

 

 

Outstanding at March 31, 2024

 

 

26,364,033

 

 

$

4.95

 

 

 

8.4

 

 

$

33,249

 

Vested and expected to vest at March 31, 2024

 

 

26,364,033

 

 

$

4.95

 

 

 

8.4

 

 

$

33,249

 

Options exercisable at March 31, 2024

 

 

9,143,369

 

 

$

6.79

 

 

 

7.4

 

 

$

9,256

 

Summary of Share Based Compensation Expense Recognized

The Company recorded stock-based compensation expense (service-based stock options and employee stock purchase plan) in the following expense categories of its condensed consolidated statements of operations and comprehensive loss (in thousands):

 

 

Three Months Ended March 31,

 

 

Three Months Ended March 31,

 

 

 

2024

 

 

2023

 

Research and development

 

$

1,677

 

 

$

2,263

 

Selling, general and administrative

 

 

3,702

 

 

 

3,137

 

 

$

5,379

 

 

$

5,400