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Consolidated Statements of Stockholders’ Equity - USD ($)
Total
Common stock
Additional paid-in capital
Accumulated other comprehensive loss
Accumulated deficit
Beginning balance at Dec. 31, 2018 $ 6,726,620 $ 1,143 $ 35,791,972 $ (96,728) $ (28,969,767)
Beginning balance (in shares) at Dec. 31, 2018   11,422,161      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 97,968   97,968    
Net loss (3,051,840)       (3,051,840)
Foreign currency translation adjustments 7,621     7,621  
Ending balance at Mar. 31, 2019 3,780,369 $ 1,143 35,889,940 (89,107) (32,021,607)
Ending balance (in shares) at Mar. 31, 2019   11,422,161      
Beginning balance at Dec. 31, 2018 6,726,620 $ 1,143 35,791,972 (96,728) (28,969,767)
Beginning balance (in shares) at Dec. 31, 2018   11,422,161      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Deemed dividend from trigger of down round provision feature (789,594)        
Net loss (10,397,367)        
Foreign currency translation adjustments (15,674)        
Ending balance at Sep. 30, 2019 1,809,992 $ 1,668 42,077,455 (112,402) (40,156,729)
Ending balance (in shares) at Sep. 30, 2019   16,683,411      
Beginning balance at Mar. 31, 2019 3,780,369 $ 1,143 35,889,940 (89,107) (32,021,607)
Beginning balance (in shares) at Mar. 31, 2019   11,422,161      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 111,351   111,351    
Issuance of common stock 5,151,702 $ 525 5,151,177    
Issuance of common stock (in shares)   5,261,250      
Deemed dividend from trigger of down round provision feature     789,594   (789,594)
Net loss (3,952,450)       (3,952,450)
Foreign currency translation adjustments (7,917)     (7,917)  
Ending balance at Jun. 30, 2019 5,083,055 $ 1,668 41,942,062 (97,024) (36,763,651)
Ending balance (in shares) at Jun. 30, 2019   16,683,411      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 135,393   135,393    
Deemed dividend from trigger of down round provision feature 0        
Net loss (3,393,078)       (3,393,078)
Foreign currency translation adjustments (15,378)     (15,378)  
Ending balance at Sep. 30, 2019 1,809,992 $ 1,668 42,077,455 (112,402) (40,156,729)
Ending balance (in shares) at Sep. 30, 2019   16,683,411      
Beginning balance at Dec. 31, 2019 440,826 $ 1,968 44,564,674 (102,625) (44,023,191)
Beginning balance (in shares) at Dec. 31, 2019   19,683,401      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 160,841   160,841    
Issuance of common stock 5,222,687 $ 331 5,222,356    
Issuance of common stock (in shares)   3,308,003      
Issuance of common stock from the exercise of warrants 1,665,020 $ 170 1,664,850    
Issuance of common stock from the exercise of warrants (in shares)   1,699,000      
Stock options exercised 1 $ 1      
Stock options exercised (in shares)   10,149      
Net loss (4,252,248)       (4,252,248)
Foreign currency translation adjustments (22,944)     (22,944)  
Ending balance at Mar. 31, 2020 3,214,183 $ 2,470 51,612,721 (125,569) (48,275,439)
Ending balance (in shares) at Mar. 31, 2020   24,700,553      
Beginning balance at Dec. 31, 2019 440,826 $ 1,968 44,564,674 (102,625) (44,023,191)
Beginning balance (in shares) at Dec. 31, 2019   19,683,401      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Deemed dividend from trigger of down round provision feature (6,863)        
Net loss (18,959,268)        
Foreign currency translation adjustments (10,182)        
Ending balance at Sep. 30, 2020 (1,385,888) $ 3,360 61,712,882 (112,807) (62,989,323)
Ending balance (in shares) at Sep. 30, 2020   33,602,516      
Beginning balance at Mar. 31, 2020 3,214,183 $ 2,470 51,612,721 (125,569) (48,275,439)
Beginning balance (in shares) at Mar. 31, 2020   24,700,553      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 186,859   186,859    
Issuance of common stock 4,022,336 $ 382 4,021,954    
Issuance of common stock (in shares)   3,823,451      
Net loss (7,124,213)       (7,124,213)
Foreign currency translation adjustments 12,090     12,090  
Ending balance at Jun. 30, 2020 311,255 $ 2,852 55,821,534 (113,479) (55,399,652)
Ending balance (in shares) at Jun. 30, 2020   28,524,004      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 194,882   194,882    
Issuance of common stock 5,277,622 $ 466 5,277,156    
Issuance of common stock (in shares)   4,666,798      
Issuance cost on equity line paid in common stock 291,529 $ 29 291,500    
Issuance cost on equity line paid in common stock (in shares)   285,714      
Issuance of common stock from the exercise of warrants 120,960 $ 13 120,947    
Issuance of common stock from the exercise of warrants (in shares)   126,000      
Deemed dividend from trigger of down round provision feature (6,863)   6,863   (6,863)
Net loss (7,582,808)       (7,582,808)
Foreign currency translation adjustments 672     672  
Ending balance at Sep. 30, 2020 $ (1,385,888) $ 3,360 $ 61,712,882 $ (112,807) $ (62,989,323)
Ending balance (in shares) at Sep. 30, 2020   33,602,516