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Equity Incentive Plans and Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Equity [Abstract]  
Summary of Stock Option Activity

A summary of the Company’s stock option activity for the period ended September 30, 2024 was as follows (in thousands, except share and per share data and years):

 

 

 

Options

 

 

Weighted-Average
Exercise
Price per Share

 

 

Weighted-Average
Remaining
Contractual Term

 

 

Aggregate
Intrinsic Value

 

Outstanding at December 31, 2023

 

 

8,276,442

 

 

$

10.07

 

 

 

8.3

 

 

$

40,420

 

Granted

 

 

2,926,848

 

 

$

20.62

 

 

 

 

 

 

 

Exercised

 

 

(434,818

)

 

$

3.05

 

 

 

 

 

 

 

Cancelled

 

 

(17,389

)

 

$

8.26

 

 

 

 

 

 

 

Outstanding at September 30, 2024

 

 

10,751,083

 

 

$

13.23

 

 

 

8.3

 

 

$

110,998

 

Exercisable at September 30, 2024

 

 

4,510,940

 

 

$

9.70

 

 

 

7.3

 

 

$

62,669

 

Vested and expected to vest as of September 30, 2024

 

 

10,751,083

 

 

$

13.23

 

 

 

8.3

 

 

$

110,998

 

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The fair value of stock options was estimated using the following assumptions:

 

 

 

Nine Months Ended
September 30,

 

 

 

2024

 

2023

 

Risk-free rate of interest

 

3.5 - 4.6%

 

3.5 - 4.3%

 

Expected term (years)

 

5.3 - 6.1

 

5.2 - 6.1

 

Expected stock price volatility

 

87.8 - 98.7%

 

87.0 - 92.3 %

 

Dividend yield

 

 

 

Schedule of Stock-based Compensation Expense

Stock-based compensation expense recognized for all equity awards has been reported in the condensed statements of operations and comprehensive loss as follows (in thousands):

 

 

 

Three Months Ended
September 30,

 

 

Nine Months Ended
September 30,

 

 

 

2024

 

 

2023

 

 

2024

 

 

2023

 

Research and development expense

 

$

5,329

 

 

$

2,811

 

 

$

10,462

 

 

$

5,749

 

General and administrative expense

 

 

2,244

 

 

 

1,566

 

 

 

5,637

 

 

 

3,590

 

Total

 

$

7,573

 

 

$

4,377

 

 

$

16,099

 

 

$

9,339