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Note 2 - Loss Per Share | 3 Months Ended
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Mar. 31, 2026
Earnings Per Share [Abstract] |
Loss Per Share | 2. Loss per Share Basic and diluted loss per share is calculated by dividing net loss by the weighted average number of shares of Common Stock outstanding and does not include the impact of any potentially dilutive common stock equivalents. In February 2026, the Company issued pre-funded warrants in connection with the 2026 Offering (as defined below) (see Note 3, Investments and Agreements, in this Form 10-Q). In addition, during 2024 the Company issued other pre-funded warrants in connection with equity offerings. For additional information see Note 2, Summary of Significant Accounting Policies, and Note 3, Investments and Agreements, of the 2025 Form 10-K. As the pre-funded warrants’ exercise price is nominal and there are no conditions that must be satisfied prior to their exercise, the pre-funded warrants are included in the calculation of the basic and diluted earnings per share as of March 31, 2026. At each of March 31, 2026 and 2025, the calculation of diluted weighted average shares did not include common stock warrants or options that were potentially convertible into Common Stock as those would be antidilutive due to the Company’s net loss position. Securities not considered in the calculation of diluted loss per share, but that could be dilutive in the future, are as follows:
|  | March 31, 2026 |  |  | March 31, 2025 |
Common stock warrants |  |  | 338,715 |  |  |  | 415,779 |
Common stock options |  |  | 13,522,033 |  |  |  | 10,170,795 |
Total potential dilutive securities |  |  | 13,860,748 |  |  |  | 10,586,574 |

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