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Stockholders' equity (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Summary of Common Stock Reserved for Future Issuance Additionally, the Company had the following common stock available for future issuances of stock-based awards:
December 31,December 31,
20222021
Shares available for future issuance under:
2021 Equity Incentive Plan2,814,126 11,417,359 
2021 Employee Stock Purchase Plan1,929,578 2,800,000 
Total shares of common stock available for future issuance4,743,704 14,217,359 
Summary of Weighted Average Assumptions, Options The following table summarizes the weighted-average assumptions used in the Black-Scholes option-pricing model to estimate the fair value of the Exchanged Awards as of August 6, 2022:
Risk-free interest rate3.0%
Expected volatility68.6%
Expected life (in years)4.9
Expected dividend yield—%
The calculation of grant date fair value of stock options was based on the following weighted average assumptions:
Fiscal Year Ended December 31,
20212020
Risk-free interest rate1.0 %0.5 %
Expected volatility60.5 %57.3 %
Expected life (in years)6.05.9
Expected dividend yield— %— %
The Company estimates the fair value of stock-based compensation for SARs by utilizing the Black-Scholes option-pricing model as described above. The calculation of grant date fair value was based on the following weighted average assumptions:

Fiscal Year Ended December 31,
20212020
Risk-free interest rate1.5 %0.7 %
Expected volatility60.9 %58.3 %
Expected life (in years)6.26.1
Expected dividend yield— %— %
The following table summarizes the weighted-average assumptions used in the Black-Scholes option-pricing model to estimate the fair value of new grants made under the ESPP:

Fiscal Year Ended December 31,
20222021
Risk-free interest rate3.5 %0.3 %
Expected volatility68.5 %61.2 %
Expected life (in years)1.21.2
Expected dividend yield— %— %
Summary of Option Activity
The following is a summary of activity for stock options under the Equity Incentive Plans:

Options OutstandingWeighted Average Exercise PriceWeighted Average Remaining Contractual TermAggregate Intrinsic Value
(In Thousands)
Balance - December 31, 2021
19,942,259 $9.70 8.14$226,350 
Granted — — 
Exercised (1,569,999)4.46 
Canceled in connection with the Equity Exchange(6,762,489)18.62 
Canceled (1,326,000)13.23 
Balance - December 31, 2022
10,283,771 $4.18 6.38$66,234 
Vested & expected to vest as of December 31, 2022
10,283,771 $4.18 6.38$66,234 
Exercisable as of December 31, 2022
8,770,918 $3.91 6.26$58,562 
Summary of Stock Appreciation Rights
The following is a summary of activity for SARs under the Equity Incentive Plans:
SARs OutstandingWeighted Average Exercise PriceWeighted Average Remaining Contractual TermAggregate Intrinsic Value
(In Thousands)
Balance - December 31, 2021
106,155 $8.45 8.25$1,267 
Granted — — 
Exercised (743)3.63 
Canceled in connection with the Equity Exchange(21,055)19.19 
Canceled(2,587)12.63 
Balance - December 31, 2022
81,770 $5.44 6.90$418 
Vested & expected to vest as of December 31, 2022
81,770 $5.44 6.90$418 
Exercisable as of December 31, 2022
66,325 $5.21 6.81$354 
Summary of Restricted Stock Unit Activity
A summary of RSU activity under the 2021 Plan is as follows:
RSUs OutstandingWeighted Average Grant Date Fair Value
Unvested - December 31, 2021
2,545,051$27.64 
Granted 11,045,098$13.79 
Awarded in connection with the Equity Exchange (1)
7,133,544 $19.06 
Released(3,409,002)$16.38 
Canceled(1,136,590)$19.20 
Unvested - December 31, 2022
16,178,101$17.37 
(1) Inclusive of 175,000 Performance-based awards that were separately modified, as discussed below.
Summary of Performance-Based Options
The following table summarizes the activities of Performance-Based Awards under the Equity Incentive Plans:

Performance-Based Awards OutstandingWeighted Average Exercise PriceWeighted Average Remaining Contractual TermAggregate Intrinsic Value
(In Thousands)
Balance - December 31, 2021
400,000 $10.12 8.60$3,768 
Granted — — 
Exercised — — 
Canceled (1)
(350,000)11.13 
Balance - December 31, 2022
50,000 $3.06 5.58$375 
Vested & expected to vest as of December 31, 2022
50,000 $3.06 5.58$375 
Exercisable as of December 31, 2022
13,541 $3.06 5.58$101 
(1) 175,000 shares were canceled as part of the Equity Exchange, and 175,000 shares were canceled as part of the modification discussed above.
Summary of Stock-Based Compensation Expense
Total stock-based compensation expense included in the consolidated statements of operations was as follows (in thousands):
Fiscal Year Ended December 31,
202220212020
Cost of revenue$5,360 $1,623 $418 
Sales and marketing29,054 8,637 7,518 
Research and development20,850 6,816 5,232 
General and administrative26,029 17,604 18,450 
Total stock-based compensation expense$81,293 $34,680 $31,618