v3.26.1
Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Summary of Stock-Based Compensation Expense

Total stock-based compensation expense recorded related to awards granted to employees and non-employees was as follows (in thousands):

 

 

 

Three Months Ended June 30,

 

 

Six Months Ended June 30,

 

 

 

2026

 

2025

 

 

2026

 

2025

 

Research and development

 

$

9,458

 

$

7,131

 

 

$

17,812

 

$

13,152

 

General and administrative

 

 

7,200

 

 

4,737

 

 

 

13,382

 

 

8,953

 

Total stock-based compensation expense

 

$

16,658

 

$

11,868

 

 

$

31,194

 

$

22,105

 

 

Summary of Activity under Plans

Activity under the Company’s 2015 and 2019 Plans and 2023 Inducement Plan is set forth below:

 

 

 

Outstanding Options

 

 

 

 

 

 

 

 

 

Shares

 

 

Weighted-
Average
Exercise
Price

 

 

Weighted-
Average
Remaining
Contractual
Term (Years)

 

 

Aggregate Intrinsic Value (Millions)

 

Balance, January 1, 2026

 

 

11,130,405

 

 

$

24.35

 

 

 

7.76

 

 

$

136.76

 

Options granted

 

 

4,611,341

 

 

$

31.89

 

 

 

 

 

 

 

Options exercised

 

 

(123,631

)

 

$

18.61

 

 

 

 

 

 

 

Options canceled

 

 

(171,600

)

 

$

26.83

 

 

 

 

 

 

 

Options expired

 

 

(3,869

)

 

$

46.22

 

 

 

 

 

 

 

Balance, June 30, 2026

 

 

15,442,646

 

 

$

26.61

 

 

 

7.94

 

 

$

166.01

 

Exercisable as of June 30, 2026

 

 

6,865,798

 

 

$

23.03

 

 

 

6.59

 

 

$

101.42

 

Vested and expected to vest as of
   June 30, 2026

 

 

15,442,646

 

 

$

26.61

 

 

 

7.94

 

 

$

166.01

 

Assumptions Used to Calculate Fair Values of Options

The fair values of options were calculated using the assumptions set forth below:

 

 

Three Months Ended June 30,

 

Six Months Ended

 

 

2026

 

2025

 

2026

 

2025

Expected term

 

5.5 - 6.1 years

 

5.5 - 6.1 years

 

5.5 - 6.1 years

 

5.5 - 6.1 years

Expected volatility

 

60.2% - 67.6%

 

72.6% - 75.8%

 

60.2% - 70.5%

 

72.6% - 76.3%

Risk-free interest rate

 

4.1% - 4.2%

 

3.8% - 4.1%

 

3.7% - 4.2%

 

3.8% - 4.4%

Dividend yield

 

0%

 

0%

 

0%

 

0%