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Stockholders’ Equity (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of shares and warrants reserved for issuance
In December 2020, the Company's amended and restated certificate of incorporation became effective, which authorizes the issuance of 700,000,000 shares of common stock with a par value of $0.0001 per share. Shares of common stock reserved for issuance, on an as-converted basis, are as follows:
December 31,December 31,
20212022
Options issued and outstanding12,785,176 12,547,010 
RSUs outstanding1,508,615 6,046,796 
PRSUs outstanding— 687,500 
Shares available for future issuance under 2020 plan9,979,700 5,842,057 
Shares available for issuance under ESPP1,869,302 2,543,089 
Total26,142,793 27,666,452 
Summarized stock option activity
The following table summarizes stock option activity for the year ended December 31, 2022:
Number of OptionsWeighted-Average Exercise Price Per ShareWeighted-Average Remaining Contractual Life (years)Aggregate
Intrinsic
Value
Balances at December 31, 202112,785,176 $10.23 6.8$1,803,812 
Options granted2,816,559 30.61 
Options exercised(2,464,572)5.03 
Options cancelled and forfeited(590,153)35.33 
Balances at December 31, 202212,547,010 14.65 6.677,289 
Options exercisable – December 31, 20227,935,324 5.66 5.270,278 
Options vested and expected to vest – December 31, 202212,473,914 $14.57 6.5$77,265 
Summaries of restricted stock units and restricted stock The following table summarizes RSU activity for the year ended December 31, 2022:
Number of SharesWeighted-Average Grant Date Fair Value Per Share
Unvested at December 31, 20211,508,615$140.10 
RSUs granted5,876,22537.19 
RSUs vested(866,717)82.32 
RSUs cancelled and forfeited(471,327)102.87 
Unvested at December 31, 20226,046,796$51.28 
The following table summarized Restricted Stock activity for the year ended December 31, 2022:

Number of SharesWeighted-Average Grant Date Fair Value Per Share
Unvested at December 31, 202161,651$123.33 
Forfeited(10,279)123.33 
Vested(41,101)123.33 
Unvested at December 31, 202210,271$123.33 
Stock options fair value assumptions
The following assumptions were used to estimate the fair value of options granted:

Year Ended December 31,
202020212022
Expected term (in years)
5.3 – 10.0
5.3 – 6.9
5.1 – 7.0
Expected volatility
53.23% – 72.02%
45.98% – 65.01%
47.58% – 52.96%
Risk-free interest rate
0.33% – 1.50%
0.62% – 1.34%
1.70% – 4.23%
Dividend yield—%—%—%
Employee stock purchase plan fair value assumptions The following assumptions were used to estimate the fair value of the February 2022 PRSUs granted:
Expected term (in years)
6.9
Expected volatility
48.43%
Risk-free interest rate
1.89%
Dividend yield
—%

The following assumptions were used to estimate the fair value of ESPP purchase rights:
Year Ended December 31,
20212022
Expected term (in years)
0.5 – 0.6
0.5
Expected volatility
61.65% – 152.95%
91.98% – 179.35%
Risk-free interest rate
0.05% – 0.09%
0.72% – 3.13%
Dividend yield—%—%
Stock-based compensation expense
The Company recorded stock-based compensation in the following expense categories in its consolidated statements of operations and comprehensive income (loss) for employees and nonemployees:
Year Ended December 31,
202020212022
Sales and marketing$1,562 $6,059 $11,354 
Customer operations898 6,251 9,355 
Engineering and product development4,844 39,191 72,169 
General, administrative, and other4,209 21,685 33,067 
Total$11,513 $73,186 $125,945