Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
Total
Common Stock
 Additional Paid in Capital
Accumulated Deficit
Treasury Stock
Beginning Balance (in shares) at Dec. 31, 2017   28,618,454      
Beginning Balance at Dec. 31, 2017 $ 14,087,342 $ 28,996 $ 136,033,967 $ (120,579,062) $ (1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (5,890,832)     (5,890,832)  
Stock-based compensation 915,469   915,469    
Stock issued for vested restricted stock awards (in shares)   527,866      
Stock issued for vested restricted stock awards 0 $ 528 (528)    
Sale of common stock (in shares)   3,289,000      
Sale of common stock 2,000,583 $ 3,289 1,997,294    
Shares withheld for taxes on vested restricted stock (78,747)   (78,747)    
Cancellation of common stock (in shares)   (54,030)      
Cancellation of common stock 0 $ (54) 54    
Ending Balance (in shares) at Dec. 31, 2018   32,381,290      
Ending Balance at Dec. 31, 2018 11,033,815 $ 32,759 138,867,509 (126,469,894) (1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (4,488,107)     (4,488,107)  
Stock-based compensation 789,914   789,914    
Stock issued for vested restricted stock awards (in shares)   765,429      
Stock issued for vested restricted stock awards 0 $ 765 (765)    
Shares withheld for taxes on vested restricted stock (45,565)   (45,565)    
Convertible Note Conversion (in shares)   2,886,792      
Convertible Note Conversion 837,170 $ 2,887 834,283    
Sale of common stock (in shares)   15,812,500      
Sale of common stock 4,414,123 $ 15,812 4,398,311    
Ending Balance (in shares) at Dec. 31, 2019   51,846,011      
Ending Balance at Dec. 31, 2019 $ 12,541,350 $ 52,223 $ 144,843,687 $ (130,958,001) $ (1,396,559)