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Note 16 - Warrants (Tables)
3 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
          

Remaining

    
   Number   Exercise   Contractual    

Description

 

Outstanding

  

Price

  

Life in Years (6)

 

Type

 

Classification

December 2020 Warrants (1)

  15,571  $150.00   0.2 

Warrant

 

Equity

January 2022 Warrants (1)

  122,092  $8.60   1.3 

Warrant

 

Liability

March 2022 Warrants (1)

  333,300  $26.00   1.9 

Warrant

 

Liability

August 2022 Warrants (1)

  1,191,811  $2.32   1.9 

Warrant

 

Liability

June 2023 Tranche A Warrants (2)

  2,173,912  $1.59   2.7 

Warrant

 

Liability

June 2023 Tranche B Prefunded Warrants (3)

  1,630,434  $0.0001   N/A 

Prefunded Warrant

 

Liability

June 2023 Prefunded Warrants (4)

  430,217  $0.0001   N/A 

Prefunded Warrant

 

Liability

June 2025 Prefunded Warrants (5)

  7,298,332  $0.0001   N/A 

Prefunded Warrant

 

Liability

Total outstanding

  13,195,669            
          

Weighted-

 
          

Average

 
      

Weighted-

  

Remaining

 
  

Number of

  

Average

  

Contractual

 
  

Warrants

  

Exercise Price

  

Life in Years

 

Outstanding June 30, 2025 (1)

  3,836,686  $4.76   2.6 

Outstanding September 30, 2025 (1)

  3,836,686  $4.76   2.3 
  

Number of

  

Weighted-

 
  

Prefunded

  

Average

 
  

Warrants

  

Exercise Price

 

Outstanding June 30, 2025

  10,293,983  $0.0001 

Prefunded warrants exercised (1)

  (935,000) $0.0001 

Outstanding September 30, 2025

  9,358,983  $0.0001