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Equity Incentive Plans and Stock-based Compensation (Tables)
12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Significant Assumptions The significant assumptions used in these calculations are summarized as follows:
Year Ended December 31, 2025Year Ended December 31, 2024
Expected term (in years)
5.3 - 6.0
5.3 - 6.1
Expected volatility
97.5% - 103.9%
99.7% - 101.6%
Expected dividend rate
0.0%
0.0%
Risk free interest rate
3.6% - 4.0%
3.4% - 4.6%
Schedule of Option Award Activity
The following table summarizes option award activity during the year ended December 31, 2025:
Number of Stock Option AwardsWeighted Average Exercise PriceWeighted Average Remaining Contractual Life (Years)Aggregate Intrinsic Value
(in thousands)
Outstanding as of December 31, 2024
16,634,775 $3.57 
Granted3,659,200 $1.01 
Exercised(112,085)$0.52 
Forfeited(2,911,020)$2.59 
Outstanding as of December 31, 2025
17,270,870 $3.22 6.9$5,696 
Options vested and expected to vest as of December 31, 2025
17,270,870 $3.22 
Vested and exercisable at December 31, 2025
11,281,386 $4.00 5.9$2,581 
Schedule of Stock Based Compensation Expense
The following sets forth the total stock-based compensation expense for the Company’s stock options and ESPP included in the Company’s consolidated statements of operations:
(in thousands)Year Ended December 31, 2025Year Ended December 31, 2024
Research and development$2,690 $4,626 
General and administrative4,154 8,075 
Total stock-based compensation expense$6,844 $12,701