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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2025
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 September 30,

 

 

Three Months Ended September 30,

 

 

Nine Months Ended
September 30,

 

 

Nine Months Ended
September 30,

 

 

 

2025

 

 

2024

 

 

2025

 

 

2024

 

Expected term (in years)

 

 

5.9

 

 

 

6.1

 

 

 

5.8

 

 

 

5.9

 

Expected volatility

 

 

61.7

%

 

 

61.8

%

 

 

61.1

%

 

 

62.5

%

Risk-free interest rate

 

 

3.8

%

 

 

4.1

%

 

 

4.3

%

 

 

4.1

%

Expected dividend yield

 

 

%

 

 

%

 

 

%

 

 

%

Summary of Stock Option Activity

The following table summarizes the Company’s stock option activity since December 31, 2024:

 

 

Number of
Shares

 

 

Weighted-
Average
Exercise
Price

 

 

Weighted-
Average
Remaining
Contractual
Term

 

 

Aggregate
Intrinsic
Value

 

 

 

 

 

 

 

 

 

(in years)

 

 

(in thousands)

 

Outstanding at December 31, 2024

 

 

14,987,559

 

 

$

4.51

 

 

 

7.5

 

 

$

 

Granted

 

 

11,191,844

 

 

$

1.46

 

 

 

 

 

 

 

Exercised

 

 

(123,111

)

 

$

0.85

 

 

 

 

 

 

 

Forfeited

 

 

(4,739,390

)

 

$

4.14

 

 

 

 

 

 

 

Outstanding at September 30, 2025

 

 

21,316,902

 

 

$

3.01

 

 

 

8.3

 

 

$

823

 

Vested and expected to vest at September 30, 2025

 

 

21,316,902

 

 

$

3.01

 

 

 

8.3

 

 

$

823

 

Options exercisable at September 30, 2025

 

 

8,838,857

 

 

$

4.75

 

 

 

7.3

 

 

$

59

 

Summary of Restricted Stock Unit Activity

The following table summarizes the Company’s RSU activity since December 31, 2024:

 

 

Number
of Shares

 

 

Weighted Average Grant Date Fair Value

 

 

 

 

 

 

 

 

Outstanding at December 31, 2024

 

 

 

 

$

 

Granted

 

 

2,100,000

 

 

$

1.52

 

Vested

 

 

(561,000

)

 

$

1.61

 

Forfeited

 

 

 

 

$

 

Outstanding at September 30, 2025

 

 

1,539,000

 

 

$

1.49

 

Summary of Share Based Compensation Expense Recognized

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

 

 

Three Months Ended September 30,

 

 

Three Months Ended September 30,

 

 

Nine Months Ended
September 30,

 

 

Nine Months Ended
September 30,

 

 

 

2025

 

 

2024

 

 

2025

 

 

2024

 

Research and development

 

$

822

 

 

$

932

 

 

$

2,440

 

 

$

3,497

 

Selling, general and administrative

 

 

2,251

 

 

 

1,934

 

 

 

6,639

 

 

 

13,234

 

 

$

3,073

 

 

$

2,866

 

 

$

9,079

 

 

$

16,731