v3.26.1
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity
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 granted7,193,563 1.88 9.51
Options exercised(2,438)$1.94 
Options forfeited(1,177,247)4.80 
Balance as of June 30, 202637,151,955 5.50 7.41$3,562 
Exercisable as of June 30, 202622,929,684 7.69 6.39$566 
Vested and expected to vest as of June 30, 202637,151,955 $5.50 7.41$3,562 
Schedule of Restricted Stock Unit Activity
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 
Granted4,566,769 1.90 1.93
Released(2,803,123)3.73 
Forfeited(2,112,821)2.60 
Balance as of June 30, 202616,179,051 2.60 2.60$33,652 
Expected to vest as of June 30, 202616,179,051 $2.60 2.60$33,652 
Vested and unreleased as of June 30, 2026477,000 $1.29 $992 
Schedule of Stock-based Compensation Expense
For the three and six months ended June 30, 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
June 30,		Six Months Ended
June 30,
2026202520262025
Research and development$2,124 $2,557 $4,820 $7,597 
General and administrative10,316 6,128 15,890 13,263 
Total stock-based compensation$12,440 $8,685 $20,710 $20,860