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Equity Incentive Awards | 9 Months Ended
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Sep. 30, 2022
Share-Based Payment Arrangement [Abstract] |
Equity Incentive Awards | Equity Incentive Awards Stock Options 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 | 10,592 |  |  | 1.26 |
Options exercised | (15) |  |  | 0.19 |
Options forfeited | (4,644) |  |  | 5.42 |
Balance at September 30, 2022 | 19,221 |  |  | $ | 5.84 |
Exercisable as of September 30, 2022 | 5,302 |  |  | $ | 11.71 |
Options granted during the nine months ended September 30, 2022 include 2.5 million shares of performance-based non-qualified options with both performance and service vesting conditions. Restricted Stock Units (“RSUs”) 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 | (833) |  |  | 3.40 |
Forfeited | (426) |  |  | 3.18 |
Outstanding at September 30, 2022 | 1,724 |  |  | $ | 2.92 |
RSUs granted during the nine months ended September 30, 2022 include 0.4 million shares of performance units with both performance and service vesting conditions. Stock-Based Compensation Expense The following table presents, by operating expense, the Company’s stock-based compensation expense:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (In thousands)
Research and development | $ | 1,432 |  |  | $ | 2,207 |  |  | $ | 5,195 |  |  | $ | 7,125 |
General and administrative | 3,071 |  |  | 3,119 |  |  | 9,631 |  |  | 13,659 |
Total stock-based compensation expense | $ | 4,503 |  |  | $ | 5,326 |  |  | $ | 14,826 |  |  | $ | 20,784 |

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- Definition The entire disclosure for shareholders' equity and share-based payment arrangement. Includes, but is not limited to, disclosure of policy and terms of share-based payment arrangement, deferred compensation arrangement, and employee stock purchase plan (ESPP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI https://asc.fasb.org/topic&trid=2208762 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI https://asc.fasb.org/topic&trid=2228938 + Details
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