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Note 9 - Share-Based Compensation | 3 Months Ended
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Mar. 31, 2026
Share-Based Payment Arrangement [Abstract] |
Share-Based Compensation | 9. Share-Based Compensation On May 31, 2024, the Company held its 2024 Annual Meeting of Stockholders (2024 Annual Meeting). At the 2024 Annual Meeting, the Company’s stockholders approved the Company’s Third Amended and Restated 2020 Equity Incentive Plan (the Amended and Restated Plan) which, among other things, (a) increased the aggregate number of shares of Common Stock authorized for issuance under the Amended and Restated Plan by 4,870,092 for a total of 12,500,000 shares of Common Stock, and (b) adjusted the “evergreen” provision included therein, such that the number of shares of Common Stock available for the grant of awards under the Amended and Restated Plan automatically increases on January 1 of each year in an amount equal to 5% of the number of shares of Common Stock issued and outstanding on December 31 of the immediately preceding year (subject to adjustment in the event of stock splits and other similar events); provided, however, that the Company’s Board of Directors may act prior to January 1 of a given year to provide that there will be no increase in the share limit for such year or provide that the increase for such year will be a lesser number of shares of Common Stock. On August 14, 2024, the Company filed a Form S-8 to register 4,870,092 additional shares of Common Stock authorized for issuance under the Amended and Restated Plan as approved by stockholders at the 2024 Annual Meeting. On January 1, 2026 and January 1, 2025, the number of shares of Common Stock available for grant increased by 3,716,899 and 3,533,573, respectively, pursuant to the “evergreen” provision in the Amended and Restated Plan. The Company filed a Form S-8 to register the January 1, 2025 additional shares on March 26, 2025. The following table presents the share-based compensation expense recognized for all share-based compensation arrangements (in thousands):
|  | Three Months Ended March 31, |
|  | 2026 |  |  | 2025 |
Research and development expense |  | $ | 1,132 |  |  | $ | 897 |
General and administrative expense |  |  | 1,421 |  |  |  | 1,201 |
Total share-based compensation expense |  | $ | 2,553 |  |  | $ | 2,098 |

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