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, 2016   24,923,662      
Beginning Balance at Dec. 31, 2016 $ 11,525,792 $ 25,300 $ 130,418,413 $ (117,521,362) $ (1,396,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (3,057,700)     (3,057,700)  
Stock-based compensation 1,279,807   1,279,807    
Stock issued for vested restricted stock awards (in shares)   309,057      
Stock issued for vested restricted stock awards 22,509 $ 309 22,200    
2017 asset acquisition (in shares)   3,529,000      
2017 asset acquisition 4,459,244 $ 3,529 4,455,715    
Taxes withheld on vested restricted stock (97,539)   (97,539)    
Treasury Stock Retirement (in shares)   (143,265)      
Treasury Stock Retirement (44,771) $ (142) (44,629)    
Ending Balance (in shares) at Dec. 31, 2017   28,618,454      
Ending 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)    
Taxes withheld on vested restricted stock (78,747)   (78,747)    
Sale of common stock (in shares)   3,289,000      
Sale of common stock 2,000,583 $ 3,289 1,997,294    
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)