v3.22.1
Warrants (Tables)
3 Months Ended
Mar. 31, 2022
Warrants  
Summary of Warrant Activity

The following is a summary of activity in the number of warrants outstanding to purchase the Company’s common stock for the three months ended March 31, 2022 (in thousands):

 Summary of Warrant Activity

  

Warrants

Accounted for as: Equity

  

Warrants

Accounted for as:

Liabilities

     
   May 2018
Warrants
   October 2013
Warrants
   January 2014
Warrants
   Total 
Outstanding, December 31, 2021   84    26    133    243 
Exercised   -    -    -    - 
Granted   -    -    -    - 
Expired   -    -    -    - 
Outstanding, March 31, 2022   84    26    133    243 
Expiration date:   10/27/2022    10/24/2023    01/16/2024      
Schedule of Fair Value of Warrants Classified as Liabilities

The fair value of the warrants classified as liabilities is estimated using the Black-Scholes option-pricing model with the following inputs as of March 31, 2022:

 Schedule of Fair Value of Warrants Classified as Liabilities

   October 2013
Warrants
   January 2014
Warrants
 
         
Strike price  $15.00   $15.00 
Expected dividend yield   0.00%   0.00%
Contractual term (years)   1.6    1.8 
Cumulative volatility   88.64%   88.20%
Risk-free rate   0.04%   0.06%
Value per warrants  $0.00   $0.00 
Aggregate value  $-   $1 

 

The fair value of the warrants classified as liabilities is estimated using the Black-Scholes option-pricing model with the following inputs as of December 31, 2021:

 

   October 2013
Warrants
   January 2014
Warrants
 
         
Strike price  $15.00   $15.00 
Expected dividend yield   0.00%   0.00%
Expected term (years)   1.8    2.0 
Cumulative volatility   129.65%   128.17%
Risk-free rate   0.06%   0.08%
Fair value (in thousands)  $2   $10