v3.26.1
STOCK-BASED COMPENSATION (Tables)
 3 Months Ended
Mar. 31, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-Based Payment Arrangement, Restricted Stock Unit, Activity
A summary of RSU award activity during the three months ended March 31, 2026 is as follows (in thousands except share and per share data):

Number of UnitsWeighted Average Grant-Date Fair Value
Outstanding RSU awards as of December 31, 2025716,850 $12.37 
Granted176,455 15.62 
Vested(173,827)11.24 
Forfeited(5,250)14.82 
Outstanding RSU awards as of March 31, 2026714,228 $13.43 
Schedule of Option Activity
A summary of option activity during the three months ended March 31, 2026 is as follows (in thousands except share and per share data):
NUMBER OF OPTIONS
WEIGHTED-AVERAGE EXERCISE PRICE
Outstanding as of December 31, 20253,901,706 $38.52 
Granted824,938 15.47 
Exercised(15,304)0.48 
Cancelled or Forfeited (65,125)61.64 
Expired(109,683)$39.41 
Outstanding as of March 31, 20264,536,532 $34.10 
Options exercisable as of March 31, 20263,129,682 $35.55 
Schedule of Stock-Based Compensation Expense
Total stock-based compensation expense recorded for employees, directors and non-employees during the three months ended March 31, 2026 and 2025 was as follows (in thousands):
THREE MONTHS ENDED MARCH 31,
20262025
Research and development$2,287 $5,265 
General and administrative3,912 3,598 
Total stock-based compensation expense$6,199 $8,863