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Equity Incentive Plans (Tables) | 9 Months Ended
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Sep. 30, 2021
Share-based Payment Arrangement [Abstract] |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | Stock option activity for the nine months ended September 30, 2021 is as follows:
| Options Outstanding |  | Weighted Average Exercise Price
Balance - December 31, 2020 | 9,551,105 |  |  | $ | 5.55 |
Options granted | 1,384,227 |  |  | 50.57 |
Options exercised | (760,383) |  |  | 1.37 |
Options cancelled and forfeited | (276,880) |  |  | 17.08 |
Balance - September 30, 2021 | 9,898,069 |  |  | $ | 11.84 |
Vested and exercisable, September 30, 2021 | 2,600,982 |  |  | $ | 3.63 |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity | The activity of restricted shares of Class A common stock for the nine months ended September 30, 2021 is as follows:
| Number of Shares |  | Weighted Average Grant Date Fair Value
Unvested at December 31, 2020 | 775,641 |  |  | $ | 1.77 |
Granted | 10,728 |  |  | 1.66 |
Repurchased | (19,728) |  |  | 1.14
Vested | (461,077) |  |  | 1.78
Unvested at September 30, 2021 | 305,564 |  | $ | 1.79 |
Share-based Payment Arrangement, Restricted Stock Unit, Activity | The Company has granted RSUs under the 2020 RSU Plan and the 2020 Plan. RSU activity for the nine months ended September 30, 2021 is as follows:
| Number of Shares |  | Weighted Average Grant Date Fair Value
Balance at December 31, 2020 | 491,318 |  |  | $ | 7.91 |
Granted | 300,943 |  |  | 53.81 |
Vested | (2,192) |  |  | 46.49
Cancelled | (6,752) |  |  | 19.00
Balance at September 30, 2021 | 783,317 |  | $ | 25.34 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount | The following table summarizes the components of stock-based compensation recognized in the Company’s condensed consolidated statements of operations and comprehensive loss (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Cost of revenue | $ | 523 |  |  | $ | — |  |  | $ | 1,271 |  |  | $ | — |
Research and development | 1,022 |  |  | 210 |  |  | 3,209 |  |  | 561 |
Selling, general and administrative | 5,241 |  |  | 967 |  |  | 14,776 |  |  | 2,003 |
Total stock-based compensation | $ | 6,786 |  |  | $ | 1,177 |  |  | $ | 19,256 |  |  | $ | 2,564 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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