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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2025
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, 20241,890,932 $15.69 6.78$920 
Options granted656,099 7.40 
Options exercised (31,918)4.56 
Forfeited (unvested)(51,106)6.80 
Outstanding as of September 30, 20252,464,007 $13.81 6.96$10,525 
Options vested and exercisable1,345,848 $19.92 5.36$5,509 
Schedule of Components of Stock-Based Compensation Expense
The following table summarizes total stock-based compensation expense recorded in the condensed consolidated statements of operations (in thousands):
Three Months Ended
September 30,
Nine Months Ended
September 30,
2025202420252024
Research and development$264 $138 $755 $414 
General and administrative434 176 1,170 574 
Total$698 $314 $1,925 $988 
Schedule of Black-Scholes Option-Pricing Model Following Assumptions
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 weighted average assumptions.

OptionsThree months ended September 30,Nine months ended September 30,
2025202420252024
Risk-free interest rate
3.7%
3.4% - 3.6%
3.7% - 4.3%
3.4% - 4.2%
Expected dividend yield0.0%0.0%0.0%0.0%
Expected term in years (for employees)6.1
5.8 - 6.1
5.5 - 6.1
5.0 - 6.1
Expected volatility
110.4%
104.6% - 104.8%
106.9% - 110.4%
79.5% - 104.8%