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Note 7 - Stock-Based Compensation Expense | 6 Months Ended
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Jun. 30, 2024
Notes to Financial Statements |
Share-Based Payment Arrangement [Text Block] |
7. | Stock-Based Compensation Expense
Stock-based compensation expense related to stock options is recognized on a straight-line basis over the requisite service period for the award and is allocated to research and development expense or general and administrative expense based upon the classification of the individual to whom the award is granted. Stock-based compensation expense related to stock option grants was $101,640 and $205,209 during the three-month and six-month periods ended June 30, 2024, respectively, as compared to $226,013 and $454,052, respectively, during the same periods of 2023. As of June 30, 2024, there is $342,156 of unrecognized compensation expense that we expect to recognize over a weighted-average period of 1.1 years. We have also issued shares of our restricted common stock to consultants and recognize the related expense over the terms of the related agreements. During the three-month and six-month periods ended June 30, 2024 we recorded stock-based compensation expense of $-0- and $54,167, respectively, associated with common stock issued for consulting services, as compared to $43,500 and $61,500, respectively, for the same periods of 2023.

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