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Stockholders' Equity | 3 Months Ended
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Mar. 31, 2023
Class of Stock Disclosures [Abstract] |
Stockholders' Equity | Note 13. Stockholders’ Equity In August 2016, the Company's Board adopted the 2016 Equity Inventive Plan (the 2016 Plan) for employees, directors and consultants. In February 2021, the Board adopted the 2021 Employment Inducement Incentive Award Plan (Inducement Plan), which provides for grants of equity-based awards. The following table presents common stock reserved for future issuance(1) (in thousands):
|  | March 31, 2023 |  |  | December 31, 2022 |
Stock options issued and outstanding |  |  | 2,224 |  |  |  | 2,065 |
Stock awards issued and outstanding |  |  | 822 |  |  |  | 581 |
Authorized for grants under the 2016 Equity Incentive Plan(2) |  |  | 328 |  |  |  | 507 |
Authorized for grants under the Inducement Plan(3) |  |  | 323 |  |  |  | 294 |
Authorized for grants under the 2016 Employee Stock Purchase Plan(4) |  |  | 457 |  |  |  | 378 |
|  |  | 4,154 |  |  |  | 3,825 |
(1) The table above excludes 541,000 treasury stock shares as of March 31, 2023 and December 31, 2022. (2) On January 1, 2023, the number of authorized shares in the 2016 Plan increased by 431,000 shares pursuant to the evergreen provisions of the 2016 Plan. (3) On February 5, 2021, 300,000 shares were authorized pursuant to the terms of the Inducement Plan. (4) On January 1, 2023, the number of authorized shares in the 2016 Employee Stock Purchase Plan increased by 100,000 sh ares pursuant to the evergreen provisions of the 2016 Employee Stock Purchase Plan.

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