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Stockholders’ Equity (Tables)
3 Months Ended
Mar. 31, 2022
Equity [Abstract]  
Equity Based Compensation Expense
Stock-based compensation expense, consisting of service-based expense related to the equity incentive plan, including expense from stock options and restricted stock units, and the employee stock purchase plan was classified as follows in the accompanying condensed consolidated statements of operations for each of the periods presented (in thousands):
Three Months Ended March 31,
20222021
Cost of revenue$148 $69 
Sales and marketing662 132 
Research and development552 396 
General and administrative2,063 1,227 
Total$3,425 $1,824 
Schedule of Stock Option Activity
Stock option activity was as follows for the three months ended March 31, 2022 :
Number of OptionsWeighted Average Exercise PriceWeighted Average Remaining Contractual Life (years)Aggregate Intrinsic Value
(in thousands)
Outstanding as of December 31, 20217,574,136 $8.60 8.35$52,257 
Exercisable as of December 31, 20212,719,252 $3.44 7.03$31,929 
Granted— — 
Exercised(564,083)$1.65 
Forfeited and expired(380,947)$12.07 
Outstanding as of March 31, 20226,629,106 $8.99 7.81$8,815 
Exercisable as of March 31, 20222,665,039 $5.45 6.30$6,975 
Schedule of Restricted Stock Unit Activity
Restricted Stock Unit activity was as follows for the three months ended March 31, 2022:
Number of SharesWeighted Average Grant Date Fair Value
Outstanding as of December 31, 2021171,075 $18.50 
Granted3,183,398 6.24
Vested(593)9.08
Canceled(33,911)16.02
Outstanding as of March 31, 20223,319,969 $6.77