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Equity Incentive Awards | 6 Months Ended
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Jun. 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 | 4,736 |  |  | 0.81 |
Options exercised | — |  |  | — |
Options forfeited | (541) |  |  | 5.13 |
Balance at June 30, 2023 | 23,515 |  |  | $ | 4.80 |
Exercisable as of June 30, 2023 | 8,867 |  |  | $ | 8.82 |
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 | 534 |  |  | 0.76 |
Vested and released | (458) |  |  | 3.25 |
Forfeited | (44) |  |  | 3.14 |
Outstanding at June 30, 2023 | 1,725 |  |  | $ | 2.14 |
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,
| 2023 |  | 2022 |  | 2023 |  | 2022
| (In thousands)
Research and development | $ | 1,380 |  |  | $ | 1,830 |  |  | $ | 2,761 |  |  | $ | 3,763 |
General and administrative | 3,089 |  |  | 3,112 |  |  | 6,271 |  |  | 6,560 |
Total stock-based compensation expense | $ | 4,469 |  |  | $ | 4,942 |  |  | $ | 9,032 |  |  | $ | 10,323 |

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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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