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Note 8 - Loss Per Share
3 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Earnings Per Share [Text Block]
NOTE
8
- LOSS PER SHARE
 
The following table presents the shares used in the basic and diluted loss per common share computations: 
  
    Three Months Ended
March 31,
    2021   2020
Numerator:        
Net loss attributable to common shareholders per common share: basic and diluted calculation   $
(3,888,713
)   $
(4,529,317
)
                 
Denominator:                
Weighted average common shares outstanding-basic    
36,513,300
     
4,886,328
 
Effect of diluted stock options, warrants, and preferred stock (1)    
-
     
-
 
Weighted average common shares outstanding - diluted    
36,513,300
     
4,886,328
 
Loss per common share-basic and diluted   $
(0.11
)   $
(0.93
)
 
(
1
)
The following is a summary of the number of underlying shares outstanding at the end of the respective periods that have been excluded from the diluted calculations because the effect on loss per common share would have been anti-dilutive:
 
    Three Months ended
March 31,
    2021   2020
Options    
1,006,419
     
794,038
 
Warrants    
15,062,139
     
5,663,594
 
Convertible debt    
-
     
378,000
 
Preferred stock: series B    
7,925
     
7,925
 
Preferred stock: series D    
-
     
350,000
 
Preferred stock: series E    
-
     
691,159