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Equity Incentive Plan and Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Summary of Total Stock-Based Compensation

The following table summarizes the components of stock-based compensation expense recognized in the Company’s condensed statements of operations and comprehensive loss during the three and nine months ended September 30, 2024 and 2023 (in thousands):

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

 

 

2024

 

 

2023

 

 

2024

 

 

2023

 

Research and development expenses

 

$

796

 

 

$

1,045

 

 

$

3,164

 

 

$

3,113

 

General and administrative expenses

 

 

1,106

 

 

 

1,124

 

 

 

3,394

 

 

 

3,067

 

Total

 

$

1,902

 

 

$

2,169

 

 

$

6,558

 

 

$

6,180

 

Summary of Stock Option Activity

A summary of the stock option activity is as follows:

 

 

 

Total Options Outstanding

 

 

Weighted-Average
Exercise Price

 

 

Weighted-Average Remaining Contractual Life
(in years)

 

 

Aggregate Intrinsic Value
(in thousands)

 

Outstanding at December 31, 2023

 

 

3,930,306

 

 

$

10.86

 

 

 

8.14

 

 

$

37,853

 

Granted

 

 

1,471,199

 

 

$

2.63

 

 

 

 

 

 

 

Exercised

 

 

(28,930

)

 

$

7.78

 

 

 

 

 

 

 

Forfeited

 

 

(524,026

)

 

$

8.78

 

 

 

 

 

 

 

Vested and expected to vest at September 30, 2024

 

 

4,848,549

 

 

$

8.61

 

 

 

6.54

 

 

$

176

 

Exercisable as of September 30, 2024

 

 

2,773,130

 

 

$

9.36

 

 

 

5.45

 

 

$

176

 

Summary of RSU Activity

A summary of the RSU activity is as follows:
 

 

 

Number of Units

 

 

Weighted-Average
Grant Date Fair Value

 

Unvested at December 31, 2023

 

 

 

 

$

 

Issued

 

 

698,096

 

 

$

2.73

 

Vested and released

 

 

(27,508

)

 

$

2.98

 

Forfeited

 

 

(199,779

)

 

$

2.62

 

Unvested at September 30, 2024

 

 

470,809

 

 

$

2.76