v3.25.2
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Expense
Stock-based compensation expense for stock options, RSUs and PSUs is reflected in the condensed consolidated statements of operations and comprehensive loss as follows (in thousands):
Three months ended June 30,Six months ended June 30,
2025202420252024
General and administrative$1,104 $1,333 $2,203 $2,649 
Research and development741 565 1,527 1,010 
Total$1,845 $1,898 $3,730 $3,659 
Schedule of Stock Option Activity
The following table summarizes the Company's stock option activity:
Number of SharesWeighted Average Exercise PriceWeighted Average Remaining Contractual Life (Years)Aggregate Intrinsic Value (In Thousands)
Options outstanding at December 31, 2024
16,197,148 $2.01 7.40$1,128 
Granted7,585,836 0.90 3 
Exercised(158,164)0.44 112 
Forfeited(391,490)2.36 3 
Expired(21,573)0.93 6
Options outstanding at June 30, 2025
23,211,757 $1.65 7.8$2,306 
Vested and expected to vest at June 30, 2025
23,211,757 $1.65 7.8$2,306 
Options exercisable at June 30, 2025
12,358,653 $2.28 6.5$1,232 
Schedule of RSU Activity
The following table summarizes the Company's unvested RSU activity:
Number of SharesWeighted Average Grant Date Fair Value
RSUs unvested at December 31, 2024
1,902,457 $1.49 
Vested(953,434)$1.90 
Forfeited(23,387)$0.82 
RSUs unvested at June 30, 2025
925,636 $1.09 
Schedule of PSU Activity
The following table summarizes the unvested PSU activity:
Number of SharesWeighted Average Grant-Date Fair Value
PSUs unvested at December 31, 2024872,352 $1.71 
Granted3,314,445 $1.58 
Vested— $— 
Forfeited— $— 
PSUs unvested at June 30, 20254,186,797 $1.61