Note 5 - Stockholders' Equity

6 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Equity [Text Block]

5. Stockholders’ Equity

Common Stock Transactions

During March 2023, we issued 108,696 shares of our common stock pursuant to a professional relations and consulting agreement.

Stock Options

We have a stock-based incentive plan (the “2020 Plan”) pursuant to which our Board of Directors may grant stock options and other stock-based awards to our employees, directors and consultants. A total of 2,075,500 shares of our common stock are reserved for future issuance pursuant to the 2020 Plan. During the six months ended June 30, 2023, 36,667 stock options were cancelled and there were no new grants of stock options or other transactions related to the 2020 Plan. As of June 30, 2023, there are 2,022,133 stock options outstanding, with a weighted-average exercise price of $1.90 per share and a weighted-average remaining contractual term of 8.7 years.

Stock Purchase Warrants

We have issued stock purchase warrants in connection with past financing and licensing transactions. During the six months ended June 30, 2023, there were no transactions related to our stock purchase warrants. As of June 30, 2023, there are 13,384,115 stock purchase warrants outstanding with a weighted-average exercise price of $2.77 per share and a weighted-average remaining term of 4.0 years.