Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Fair Value Measurements (Tables)

v3.23.3
Note 4 - Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
   

October 2022

   

January 2023

         
   

Warrants

   

Warrants

   

Total

 

Fair value of warrants outstanding as of December 31, 2022

  $ 2,609     $     $ 2,609  

Fair value of warrants at issuance as of January 31, 2023

          2,235       2,235  

Change in fair value of warrants

    (291 )     (1,253 )     (1,544 )

Fair value of warrants outstanding as of September 30, 2023

  $ 2,318     $ 982     $ 3,300  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
   

September 30,

   

December 31,

 
   

2023

   

2022

 
   

(Black-Scholes

   

(Monte Carlo

 
   

model)

   

simulation)

 

Stock price

  $ 0.71     $ 1.16  

Risk-free interest rate

    4.60 %     4.02 %

Expected dividend yield

           

Expected term in years

    4.0       4.8  

Expected volatility

    141 %     93 %
            January 31,  
            2023  
   

September 30,

   

(Initial

 
   

2023

   

measurement)

 

Stock price

  $ 0.71     $ 1.38  

Risk-free interest rate

    5.03 %     3.90 %

Expected dividend yield

           

Expected term in years

    2.4       3.0  

Expected volatility

    165 %     160 %