v3.26.1
Stock-Based Compensation (Tables)
 3 Months Ended
Mar. 31, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity Under Plan
The following summarizes option activity under the 2018 Plan:
Outstanding Options
Number
of
Options
Weighted-
Average
Exercise
Price
Weighted-
Average
Remaining
Contract
Term		Aggregate Intrinsic Value
(in years)(in thousands)
Balance as of December 31, 202531,138,077 $6.31 7.17$97 
Options granted6,995,020 1.87 
Options exercised(2,438)$1.94 
Options forfeited(214,612)4.81 
Balance as of March 31, 202637,916,047 5.50 7.48$9,302 
Exercisable as of March 31, 202622,823,105 7.81 6.32$1,282 
Vested and expected to vest as of March 31, 202637,916,047 $5.50 7.48$9,302 
Schedule of Restricted Stock Units Activity Under Plan
The following summarizes restricted stock unit activity under the 2018 Plan:
Outstanding Restricted Stock Units
Restricted
Stock Units
Weighted-
Average Grant Date Fair
Value per
Share		Weighted Average Remaining Vesting LifeAggregate Intrinsic Value
(in years)(in thousands)
Balance as of December 31, 202516,528,226 $2.99 2.39$22,644 
Granted3,854,459 1.87 
Released(2,482,047)3.69 
Forfeited(1,941,228)2.59 
Balance as of March 31, 202615,959,410 2.66 2.81$38,941 
Expected to vest as of March 31, 202615,959,410 $2.66 2.81$38,941 
Vested and unreleased as of March 31, 2026238,500 $1.29 $582 
Schedule of Stock-based Compensation Expense
For the three months ended March 31, 2026 and 2025, the following table presents stock-based compensation expense related to stock options, restricted stock units and employee stock purchase plans that was recorded as research and development and general and administrative expense in its condensed statements of operations and comprehensive loss:
Three Months Ended
March 31,
20262025
Research and development$2,696 $5,040 
General and administrative5,574 7,135 
Total stock-based compensation$8,270 $12,175