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Note 5 - Stockholders' Equity
 9 Months Ended
Sep. 30, 2023
Notes to Financial Statements  
Equity [Text Block]

5.

Stockholders’ Equity

 

Common Stock Transactions

 

During March, August and September 2023 we issued 108,696, 178,253 and 73,385 shares of our common stock, respectively, pursuant to professional services and consulting agreements.

 

Stock Options

 

We have stock-based incentive plans (the “Plans”) pursuant to which our Board of Directors may grant stock options and other stock-based awards to our employees, directors and consultants. During the nine months ended September 30, 2023, 40,000 stock options were cancelled and there were no new grants of stock options or other transactions related to the Plans. As of September 30, 2023, there are 2,018,800 stock options outstanding, with a weighted-average exercise price of $1.89 per share and a weighted-average remaining contractual term of 7.5 years. Including the outstanding stock options, a total of 5,018,800 shares of our common stock are reserved for future issuance pursuant to the Plans.

 

Stock Purchase Warrants

 

We have issued stock purchase warrants in connection with past financing and licensing transactions. During the nine months ended September 30, 2023, there were no transactions related to our stock purchase warrants. As of September 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 3.8 years.