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STOCKHOLDERS’ DEFICIT (Tables)
3 Months Ended
Mar. 31, 2022
Equity [Abstract]  
SCHEDULE FOR MEASUREMENT OF FAIR VALUE OF WARRANTS

Common warrants:

 

   March 16, 2022   March 31, 2022 
Stock price  $0.34   $0.25 
Exercise price  $0.35   $0.35 
Risk-free rate   1.95%   2.26%
Volatility   101.5%   100.9%
Remaining term (years)   2.0    1.96 

 

Placement agent warrants:

 

   March 16, 2022   March 31, 2022 
Stock price  $0.34   $0.25 
Exercise price  $0.38   $0.38 
Risk-free rate   1.95%   2.26%
Volatility   101.5%   100.9%
Remaining term (years)   2.0    1.96 
SUMMARY OF WARRANT ACTIVITY

The following table summarizes warrant activity for the three months ended March 31, 2022:

 

   Outstanding December 31, 2021   Warrants Issued   Outstanding
March 31, 2022
 
Transaction               
February 14, 2020 common warrants   539,500        539,500 
December 23, 2020 placement agent warrants   641,283        641,283 
January 14, 2021 common warrants   9,090,910        9,090,910 
January 14, 2021 placement agent warrants   545,455        545,455 
January 25, 2021 common warrants   8,016,033        8,016,033 
January 22, 2021 placement agent warrants   480,962        480,962 
March 16, 2022 common warrants       16,393,445    16,393,445 
March 16, 2022 placement agent warrants       819,672    819,672 
Total   19,314,143    17,213,117    36,527,260