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Equity Incentive Awards (Tables) | 6 Months Ended
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Jun. 30, 2022
Share-Based Payment Arrangement [Abstract] |
Summary of Stock Options Activity | The following table summarizes the Company’s option activity and related information:
| Number of Options (in thousands) |  | Weighted- Average Exercise Price
Balance at December 31, 2021 | 13,288 |  |  | $ | 9.34 |
Options granted | 6,994 |  |  | 1.33 |
Options exercised | (15) |  |  | 0.19 |
Options forfeited | (3,469) |  |  | 5.96 |
Balance at June 30, 2022 | 16,798 |  |  | $ | 6.71 |
Exercisable as of June 30, 2022 | 4,739 |  |  | $ | 12.02 |
Summary of Restricted Stock Units Activity | The following table summarizes the Company’s RSUs activity and related information:
| Number of Units (in thousands) |  | Weighted- Average Grant- Date Fair Value
Outstanding at December 31, 2021 | 2,126 |  |  | $ | 3.76 |
Granted | 857 |  |  | 1.43 |
Vested and released | (376) |  |  | 4.64 |
Forfeited | (220) |  |  | 2.51 |
Outstanding at June 30, 2022 | 2,387 |  |  | $ | 2.90 |
Summary of Stock-Based Compensation Expense | The following table presents, by operating expense, the Company’s stock-based compensation expense:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In thousands)
Research and development | $ | 1,830 |  |  | $ | 2,579 |  |  | $ | 3,763 |  |  | $ | 4,918 |
General and administrative | 3,112 |  |  | 5,655 |  |  | 6,560 |  |  | 10,540 |
Total stock-based compensation expense | $ | 4,942 |  |  | $ | 8,234 |  |  | $ | 10,323 |  |  | $ | 15,458 |

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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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + 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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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