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Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Schedule of Stock Based Compensation Cost
We recorded stock-based compensation expense in the following categories in the accompanying unaudited condensed consolidated statements of operations and balance sheets (in thousands):
Three Months Ended March 31,
20222021
Cost of revenue
$277 $59 
Sales and marketing
3,125 207 
Technology and development
4,298 526 
General and administrative
14,165 3,150 
Total stock-based compensation expense
21,865 3,942 
Amount capitalized to internal-use software
481 13 
Total stock-based compensation expense
$22,346 $3,955 
Schedule of Stock Options Activity
Stock option activity for the three months ended March 31, 2022 is as follows (in thousands, except weighted-average exercise price and remaining contract life):
Number of
Options
Weighted-
Average
Exercise
Price
Weighted-
Average
Remaining
Contractual
Life
(in Years)
Aggregate
Intrinsic
Value
Outstanding at December 31, 2021
15,274 $10.47 8.0$97,094 
Granted
2,766 14.15 
Exercised
(203)1.15 
Cancelled/forfeited
(6)1.04 
Outstanding at March 31, 2022
17,831 $11.15 8.1$66,773 
Vested and expected to vest at March 31, 2022
17,821 $11.15 8.1$66,704 
Exercisable at March 31, 2022
7,724 $9.09 7.5$39,034 
Schedule of Fair Value Assumptions and Techniques for Stock Options The weighted-average assumptions that were used to calculate the grant-date fair value of our stock option grants using the Black-Scholes option pricing model were as follows:
Three Months Ended March 31, 2022
Expected life (years)
5.6
Risk-free interest rate
2.6 %
Expected volatility
47.6 %
Expected dividend yield
— 
Summary of Restricted Stock Unit Activity
Restricted Stock Units
Restricted stock unit, or RSU, activity for the three months ended March 31, 2022 is as follows (in thousands, except weighted-average grant-date fair value):
Number of UnitsWeighted-
Average
Grant-
Date Fair
Value
Unvested at December 31, 2021
3,577 $21.52 
Granted
4,910 14.15 
Cancelled/forfeited
(131)13.35 
Vested
(398)17.87 
Unvested at March 31, 2022
7,958 $17.29