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Equity Incentive Awards | 9 Months Ended
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Sep. 30, 2023
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, 2022 | 19,320 |  |  | $ | 5.79 |
Options granted | 6,056 |  |  | 1.05 |
Options exercised | (1) |  |  | 1.29 |
Options forfeited | (1,314) |  |  | 3.05 |
Balance at September 30, 2023 | 24,061 |  |  | $ | 4.74 |
Exercisable as of September 30, 2023 | 9,724 |  |  | $ | 8.54 |
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, 2022 | 1,693 |  |  | $ | 2.90 |
Granted | 539 |  |  | 0.77 |
Vested and released | (491) |  |  | 3.14 |
Forfeited | (128) |  |  | 1.94 |
Outstanding at September 30, 2023 | 1,613 |  |  | $ | 2.20 |
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,
| 2023 |  | 2022 |  | 2023 |  | 2022
| (In thousands)
Research and development | $ | 1,164 |  |  | $ | 1,432 |  |  | $ | 3,925 |  |  | $ | 5,195 |
General and administrative | 3,225 |  |  | 3,071 |  |  | 9,496 |  |  | 9,631 |
Total stock-based compensation expense | $ | 4,389 |  |  | $ | 4,503 |  |  | $ | 13,421 |  |  | $ | 14,826 |

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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 -Topic 505 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//505/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//718/tableOfContent + Details
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