XML 31 R22.htm IDEA: XBRL DOCUMENT v3.26.1
Note 5 - Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Common Stock Reserved for Future Issuance [Table Text Block]
   

Shares

 

Stock warrants outstanding

    3,874,885  

Stock options outstanding

    45,579  

Stock options authorized for future grants

    292,714  

Total

    4,213,178  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
   

Number

of Shares

   

Weighted-

Average

Exercise

Price

   

Weighted-

Average

Remaining

Contractual

Term (yrs)

   

Aggregate

Intrinsic

Value

 

Outstanding at December 31, 2024

    13,367     $ 317.75       8.6     $ 58,500  

Granted

    32,212       62.00                  

Exercised

    -       -                  

Forfeited or expired

    -       -                  

Outstanding at December 31, 2025

    45,579     $ 137.20       8.6     $ -  

Exercisable at December 31, 2025

    9,531     $ 423.93       7.2     $ -  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Issue Date

 

Number

of Shares*

   

Exercise

Price*

 

Expiration

September 2021

    268     $ 4,875.00  

September 2026

May 2024

    64,228       8.22  

May 2029

July 2024

    86,800       14.29  

January 2030

August 2024

    107,025       32.75  

March 2030

March 2025

    137,405       32.75  

June 2030

July 2025

    729,200       4.35  

July 2030

September 2025

    476,196       2.8543  

November 2030

December 2025

    2,273,763       2.8543  

December 2030

Outstanding at December 31, 2025

    3,874,885