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Stock-based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock-based Compensation Expense for Options Granted Reflected in the Consolidate Statement of Operations and Comprehensive Loss | Stock-based compensation expense for stock options and RSUs is reflected in the condensed consolidated statements of operations and comprehensive loss as follows (in thousands):
| Three months ended September 30, |  | Nine months ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
General and administrative | $ | 840 |  |  | $ | 101 |  |  | $ | 2,957 |  |  | $ | 248 |
Research and development | 507 |  |  | 25 |  |  | 1,318 |  |  | 249 |
Total | $ | 1,347 |  |  | $ | 126 |  |  | $ | 4,275 |  |  | $ | 497 |
Schedule of Stock Option Activity | The following table summarizes the stock option activity:
| Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life (years) |  | Aggregate Intrinsic Value (in thousands)
Options outstanding at December 31, 2020 | 4,224,433 |  |  | $ | 0.84 |  |  | 8.9 |  | $ | 5,496 |
Granted | 7,469,300 |  |  | $ | 3.33 |  |  |  |  | $ | — |
Exercised | (901,250) |  |  | $ | 0.73 |  |  |  |  | $ | 8,042 |
Forfeited | (274,220) |  |  | $ | 2.96 |  |  |  |  | $ | 1,146 |
Options outstanding at September 30, 2021 | 10,518,263 |  |  | $ | 2.56 |  |  | 9.0 |  | $ | 49,552 |
Options exercisable at September 30, 2021 | 991,429 |  |  | $ | 1.71 |  |  | 7.8 |  | $ | 5,629 |
Share-based Payment Arrangement, Restricted Stock Unit, Activity | The following table summarizes the RSU activity:
| Number of Shares |  | Weighted- Average Grant-Date Fair Value |  | Aggregate Intrinsic Value (in thousands) |  |  |  |
RSUs outstanding at December 31, 2020 | — |  |  | $ | — |  |  | $ | — |  |  |  |  |
Granted | 179,951 |  |  | $ | 6.69 |  |  | $ | 1,280 |  |  |  |  |
Forfeited | (900) |  |  | $ | 8.75 |  |  | $ | 6 |  |  |  |  |
RSUs outstanding at September 30, 2021 | 179,051 |  |  | $ | 6.68 |  |  | $ | 1,286 |  |  |  |  |

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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=122041274&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 Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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) -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 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: 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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