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EQUITY INCENTIVE PLANS​ (Tables)
 9 Months Ended
Sep. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation Expense Recognized
Stock-based compensation expense recognized for stock options, RSUs and our ESPP is recorded as operating expenses in our condensed statements of operations and comprehensive loss, as follows:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)
2025202420252024
Selling, general and administrative$10,400 $6,199 $28,157 $20,305 
Research and development2,342 2,934 8,360 7,213 
Total$12,742 $9,133 $36,517 $27,518 
Schedule of Total Unrecognized Stock-Based Compensation Expense, Net of Estimated Forfeitures A summary of our total unrecognized stock-based compensation expense, net of estimated forfeitures, as of September 30, 2025 is as follows:
Unrecognized Compensation Expense
(in thousands)
Average Remaining Vesting Period
(in years)
Stock option grants$54,878 2.67
RSU grants$74,606 3.02
ESPP$276 0.42
Schedule of Stock Option Activity
A summary of our stock option activity and related information for the nine months ended September 30, 2025 is as follows:
Number of Shares
(in thousands)		Weighted-Average Exercise Price per Share
Balance as of December 31, 202428,085 $5.63 
Options granted7,557 $5.02 
Options exercised(1,642)$2.17 
Options forfeited or canceled(3,857)$6.78 
Balance as of September 30, 202530,143 $5.52 
Exercisable as of September 30, 202517,039 $5.42 
Schedule of Restricted Stock Units Activity
A summary of our RSUs activity and related information for the nine months ended September 30, 2025 is as follows:
Number of RSUs
(in thousands)
Weighted-Average Grant Date Fair Value per Share
Non-vested restricted stock units as of December 31, 20248,013 $6.59 
Granted10,351 $5.13 
Vested(2,929)$5.84 
Forfeited(1,611)$6.00 
Non-vested restricted stock units as of September 30, 202513,824 $5.72