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Stock-based compensation (Tables)
 3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Schedule of stock-based compensation
Employee stock-based compensation cost recognized in the consolidated statements of income/(loss) and comprehensive income/(loss) was as follows:
Three months ended
March 31,
20222021
(in thousands)
Cost of revenue$249 $111 
Engineering, research, and development864 554 
Sales and marketing671 791 
General and administrative6,877 4,215 
Total stock-based compensation$8,661 $5,671 
Schedule of option activity
Stock option activity under the Company’s 2018 Plan is set forth below:
Number of OptionsWeighted Average Exercise PriceAggregate Intrinsic ValueWeighted Average Contractual Term
(in years)
Options outstanding as of December 31, 2021
1,916,101 $3.54 $65,971 6.97
Options exercised(62,396)$3.54 
Options forfeited(12,398)$3.54 
Options outstanding as of March 31, 2022
1,841,307 $3.54 $19,407 6.82
Options vested and exercisable as of March 31, 2022
1,729,216 $3.54 $18,226 6.78
Stock option activity under the Company’s 2020 Plan is set forth below:
Number of OptionsWeighted Average Exercise PriceAggregate Intrinsic Value, in thousandsWeighted Average Contractual Term
(in years)
Options outstanding as of December 31, 2021
2,224,687 $12.86 $55,856 8.53
Options granted358,800 $12.15 
Options exercised(9,308)$7.70 
Options forfeited(83,345)$17.00 
Options outstanding as of March 31, 2022
2,490,834 $12.64 $8,888 8.56
Options vested and exercisable as of March 31, 2022
705,387 $8.61 $3,895 7.93
Schedule of restricted stock unit activity
The following table summarizes activity of the Company’s RSUs for the three months ended March 31, 2022:
Number of SharesWeighted Average Grant Date Fair Value
Unvested awards as of December 31, 2021
1,493,915 $8.82 
Awards granted13,290 $13.87 
Awards vested and released(156,525)$8.19 
Unvested awards as of March 31, 2022
1,350,680 $8.94 
Schedule of performance share activity
The following table summarizes activity of the Company's PSUs for the three months ended March 31, 2022:
Number of SharesWeighted Average Grant Date Fair Value
Unvested awards as of December 31, 2021
112,085 $15.69 
Awards granted518,938 $39.41 
Awards vested and released(112,085)$15.69 
Unvested awards as of March 31, 2022
518,938 $39.41