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Note 7 - Net Loss Per Share | 3 Months Ended
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Mar. 31, 2026
Notes to Financial Statements |
Earnings Per Share [Text Block] | Note 7. Net Loss per Share The Company calculates basic net loss per share by dividing net loss by the weighted-average number of shares of common stock outstanding during the period. Diluted net loss per share is computed by giving effect to all potential dilutive common stock equivalents outstanding during the period. For purposes of this calculation, options to purchase common stock and warrants converted into common stock are considered common stock equivalents. Potential common shares that have an anti-dilutive effect (i.e., those that increase income per share or decrease loss per share) are excluded from the calculation of diluted net loss per share. The following outstanding equity instruments were excluded from the computation of diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect:
|  | Three Months Ended March 31, |
|  | 2026 |  |  | 2025 |
Warrants converted into common stock |  |  | 193,481 |  |  |  | 208,744 |
Common stock options |  |  | 11,119,350 |  |  |  | 13,493,432 |
Estimated shares issuable under the employee stock purchase plan |  |  | 31,577 |  |  |  | 26,532 |
Restricted stock units |  |  | 200,000 |  |  |  | — |
Total |  |  | 11,544,408 |  |  |  | 13,728,708 |

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