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Note 5 - Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Warrant Description

 

Number

of Shares

  

Exercise

Price

 

Expiration

2020 Warrants

  120,000  $1.65 

Jun 2025

2020 Unit Warrants

  2,396,631   5.00 

Sep 2025

2020 Representative Warrants

  128,000   5.50 

Mar 2024

2021 Representative Warrants

  72,000   6.875 

Aug 2024

2021 Warrants

  100,000   13.00 

Sep 2026

Jan 2022 Common Warrants

  3,067,484   3.26 

Feb 2027

May 2022 Preferred Investment Options

  7,500,000   1.65 

May 2028

Total Warrants Outstanding at September 30, 2022

  13,384,115