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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award
RSU activity for the three months ended March 31, 2023 was as follows:

SharesWeighted-average grant date fair value per share
Unvested balance as of December 31, 2022
3,716,061$6.60 
Granted
989,283$5.97 
Vested
(626,772)$6.87 
Forfeited
(91,575)$5.61 
Unvested balance as of March 31, 2023
3,986,997$6.42 
Summary of Stock Option Activity
The following table summarizes the Black-Scholes option pricing model weighted-average assumptions used in estimating the fair value of stock options granted to employees during the three months ended March 31, 2022. No stock options were granted during the three months ended March 31, 2023.
Three Months Ended March 31,
20232022
Expected term (in years)
-6.0
Expected volatility
— %49.0 %
Risk-free interest rate
— %1.20 %
Expected dividend yield— %— %
A summary of equity award activity under the Company’s equity plans and related information is as follows (in thousands, except share, price and year data):
 Shares
available for
grant
Outstanding
stock
options
Weighted-
average
exercise
Price
Weighted-
average
remaining
contractual
life (years)
Aggregate
intrinsic
value
Balance as of December 31, 2022
1,836,566 12,371,281 $5.74 6.07$32,385 
Shares authorized809,916 
Options granted— — — 
Options exercised— (496,905)1.69 
Options cancelled110,449 (110,449)12.90 
RSU award activity(897,708)— 
Balance as of March 31, 2023
1,859,223 11,763,927 $5.84 5.85$20,684 
Vested and exercisable as of March 31, 2023
8,755,570 $4.15 5.08$19,219 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
Three Months Ended March 31,
20232022
Expected term (in years)
0.5 - 2.0
0.5 - 2.0
Expected volatility
45% - 68%
45% - 57%
Risk-free interest rate
0.10% - 4.75%
0.10% - 0.51%
Expected dividend yield— %— %
Share-based Payment Arrangement, Expensed and Capitalized, Amount
Stock-based compensation expense included in the condensed consolidated statements of operations was as follows (in thousands):
Three Months Ended March 31,
20232022
Cost of revenue
$416 $276 
Research and development
2,133 1,555 
Sales and marketing
2,152 1,134 
General and administrative
1,127 870 
Total stock-based compensation expense
$5,828 $3,835