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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Summary of Stock Option Activity

The following table summarizes the stock option activity for the year ended December 31, 2025:

 

 

Number of
Options

 

 

Weighted-
Average
Exercise
Price

 

 

Weighted-
Average
Remaining
Contractual
Life (Years)

 

 

Aggregate
Intrinsic
Value (in
thousands)

 

Balance- December 31, 2024

 

 

5,384,142

 

 

$

9.61

 

 

 

7.8

 

 

$

1,022

 

Change in authorized shares

 

 

 

 

 

 

 

 

 

 

 

 

Granted

 

 

2,964,646

 

 

 

4.38

 

 

 

 

 

 

 

Exercised

 

 

(136,871

)

 

 

5.22

 

 

 

 

 

 

 

Forfeited/expired

 

 

(297,859

)

 

 

9.24

 

 

 

 

 

 

 

Balance- December 31, 2025

 

 

7,914,058

 

 

$

7.74

 

 

 

7.9

 

 

$

46,246

 

Vested and Exercisable- December 31, 2025

 

 

3,717,317

 

 

$

8.45

 

 

 

7.1

 

 

$

18,914

 

Summary of Estimated Fair Value of Stock Options Granted Weighted Average Assumptions

The weighted-average grant date fair value of stock options granted during the year ended December 31, 2025 and 2024 was $3.67 and $8.81, respectively, and were estimated on the date of grant using a Black-Scholes option pricing model with the following weighted-average assumptions:

 

 

Year Ended December 31,

 

 

2025

 

 

2024

 

Weighted-average risk-free interest rate

 

 

4.4

%

 

 

4.4

%

Expected term of stock options (in years)

 

6.0 years

 

 

6.0 years

 

Weighted-average expected stock price volatility

 

 

108.1

%

 

 

110.1

%

Estimated dividend yield

 

 

 

 

 

 

Schedule of Stock-based Compensation Expense

Stock-based compensation expense recorded as research and development and general and administrative expenses in the statements of operations and comprehensive loss is as follows (in thousands):

 

 

Year Ended December 31,

 

 

2025

 

 

2024

 

Research and development

 

$

3,188

 

 

$

1,939

 

General and administrative

 

 

8,503

 

 

 

5,040

 

Total stock-based compensation expense

 

$

11,691

 

 

$

6,979