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STOCK-BASED AWARDS (Tables)
 12 Months Ended
Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity A summary of stock option activity for the year ended December 31, 2025 was as follows:
Outstanding Options
Number of OptionsWeighted Average Exercise PriceWeighted-Average Remaining Contractual Term
Intrinsic Value
(in thousands)
Balance as of December 31, 2024
2,689,410 $18.37 4.36$48,886 
Options exercised
(561,891)6.40 
Options canceled
(96,645)71.62 
Balance as of December 31, 2025
2,030,874 $19.09 3.98$2,918 
Options vested and exercisable as of December 31, 2025
1,936,956 $16.85 3.94$2,918 
Schedule of Stock Option Valuation Assumptions A summary of the weighted-average assumptions the Company utilized to record compensation expense for stock options granted during the years ended December 31, 2024 and 2023 was as follows:
December 31,
20242023
Volatility
85.0 %83.9 %
Expected term (in years)5.25.0
Risk-free interest rate4.3 %4.1 %
Expected dividends— %— %
Schedule of Restricted Stock Units Activity
A summary of RSUs activity for the year ended December 31, 2025 was as follows:
Restricted Stock Units
Time-Based SharesPerformance-Based SharesTotal SharesWeighted-Average Grant-Date Fair Value
Balance as of December 31, 2024
8,796,901 1,599,646 10,396,547 $48.29 
Granted19,055,275 2,213,724 21,268,999 25.18 
Vested(8,359,840)(707,510)(9,067,350)43.25 
Cancelled/Forfeited(2,154,479)(460,134)(2,614,613)34.71 
Balance as of December 31, 2025
17,337,857 2,645,726 19,983,583 $27.86 
Schedule of Performance-Based RSUs The fair value of these performance-based RSUs was measured on the grant date, March 27, 2021, using a Monte Carlo simulation model, with the following assumptions:
Weighted average volatility60.0 %
Expected term (in years)5.0
Risk-free interest rate0.9 %
Expected dividends— %
Schedule of Stock-Based Compensation Expense
Total employee and nonemployee stock-based compensation expense for the years ended December 31, 2025, 2024, and 2023, was classified in the consolidated statements of operations and comprehensive loss as follows (in thousands):
Year Ended December 31,
202520242023
Cost of revenue$3,325 $4,335 $3,590 
Research and development183,770 172,190 137,703 
Selling, general and administrative84,180 110,827 117,433 
Restructuring charges
— (1,480)(1,443)
Total$271,275 $285,872 $257,283