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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity
The following table summarizes information and activity related to the Company’s stock options:
Number of
Stock Options
Weighted Average
Exercise Price
Weighted Average
Remaining Contractual Life
(in years)
Total
Intrinsic Value
(in thousands)
Outstanding as of December 31, 20231,305,924 $21.27 7.43$2,511 
Options granted798,934 3.59 
Options exercised(9,757)3.92 
Forfeited (unvested)(204,169)10.43 
Outstanding as of December 31, 20241,890,932 $15.69 6.78$920 
Options vested and exercisable860,803 $28.28 4.78$428 
Schedule of Components of Stock-Based Compensation Expense
The following table summarizes total stock-based compensation expense recorded in the consolidated statements of operations (in thousands):
For the Year Ended December 31,
20242023
Research and development$582 $552 
General and administrative870 627 
Total$1,452 $1,179 
Schedule of Assumptions Used to Estimate Fair Value of Stock Option Awards
The fair value of each employee and non-employee stock option grant was estimated on the date of grant using Black-Scholes based on the following assumptions.

OptionsFor the Year Ended December 31,
20242023
Risk-free interest rate3.4% - 4.3%3.7% - 4.5%
Expected dividend yield0.0%0.0%
Expected volatility79.5% - 107.8%71.7% - 75.5%
Expected term in years (employees)5.0 - 6.15.5 - 6.1