Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

v3.20.4
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
Total
Common Stock
Additional Paid-In Capital
Treasury Stock
Accumulated Deficit
Beginning balance at Apr. 30, 2019 $ 26,461,428 $ 18,666 $ 68,562,727 $ (70,000) $ (42,049,965)
Beginning balance (in shares) at Apr. 30, 2019   18,665,551      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 889,484   889,484    
Common stock issued for stock options exercised for cash 237,713 $ 113 237,600    
Common stock issued for stock options exercised for cash (in shares)   112,826      
Common stock issued for cashless stock options exercised 0 $ 182 (182)    
Common stock issued for cashless stock options exercised (in shares)   182,207      
Common stock issued for cashless warrant exercise 0 $ 77 (77)    
Common stock issued for cashless warrant exercise (in shares)   76,929      
Amortization of warrant based cost 18,565   18,565    
Amortization of restricted stock issued for services 73,350   73,350    
Restricted Stock Issued for Services, subject to vesting 0 $ 104 (104)    
Restricted Stock Issued for Services, subject to vesting (in shares)   104,803      
Net loss (2,713,450)       (2,713,450)
Ending balance at Oct. 31, 2019 24,967,090 $ 19,142 69,781,363 (70,000) (44,763,415)
Ending balance (in shares) at Oct. 31, 2019   19,142,316      
Beginning balance at Jul. 31, 2019 24,969,790 $ 18,914 69,146,123 (70,000) (44,125,247)
Beginning balance (in shares) at Jul. 31, 2019   18,913,527      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 391,067   391,067    
Common stock issued for stock options exercised for cash 192,522 $ 90 192,432    
Common stock issued for stock options exercised for cash (in shares)   90,950      
Common stock issued for cashless stock options exercised 0 $ 80 (80)    
Common stock issued for cashless stock options exercised (in shares)   80,313      
Common stock issued for cashless warrant exercise 0 $ 58 (58)    
Common stock issued for cashless warrant exercise (in shares)   57,526      
Amortization of warrant based cost 9,125   9,125    
Amortization of restricted stock issued for services 42,754   42,754    
Net loss (638,168)       (638,168)
Ending balance at Oct. 31, 2019 24,967,090 $ 19,142 69,781,363 (70,000) (44,763,415)
Ending balance (in shares) at Oct. 31, 2019   19,142,316      
Beginning balance at Apr. 30, 2020 41,747,957 $ 21,771 89,505,216 (70,000) (47,709,030)
Beginning balance (in shares) at Apr. 30, 2020   21,770,520      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Common stock issued for stock options exercised for cash 1,269,982        
Common stock issued for stock options exercised for cash (in shares)   415,175      
Common stock issued for warrants exercised for cash $ 1,081,792        
Common stock issued for warrants exercised for cash (in shares) 192,049        
Ending balance at Jul. 31, 2020 $ 43,678,736 $ 22,378 92,378,584 (70,000) (48,652,226)
Ending balance (in shares) at Jul. 31, 2020   22,377,744      
Beginning balance at Apr. 30, 2020 41,747,957 $ 21,771 89,505,216 (70,000) (47,709,030)
Beginning balance (in shares) at Apr. 30, 2020   21,770,520      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 2,318,658   2,318,658    
Common stock issued for stock options exercised for cash 2,215,315 $ 918 2,214,397    
Common stock issued for stock options exercised for cash (in shares)   917,587      
Common stock issued for cashless stock options exercised 0 $ 22 (22)    
Common stock issued for cashless stock options exercised (in shares)   22,339      
Common stock issued for conversion of Convertible Notes 10,000,000 $ 1,399 9,998,601    
Common stock issued for conversion of Convertible Notes (in shares)   1,398,602      
Common stock issued for vested restricted stock units 0 $ 132 (132)    
Common stock issued for vested restricted stock units (in shares)   132,109      
Common stock issued for warrants exercised for cash 1,081,792 $ 192 1,081,600    
Common stock issued for warrants exercised for cash (in shares)   192,049      
Modification charge for warrants exercised 25,966   25,966    
Amortization of warrant based cost 18,250   18,250    
Cancellation of Treasury Stock 0 $ (17) (69,983) 70,000  
Cancellation of Treasury Stock (in shares)   (16,667)      
Net loss (5,313,721)       (5,313,721)
Ending balance at Oct. 31, 2020 52,094,217 $ 24,417 105,092,551 0 (53,022,751)
Ending balance (in shares) at Oct. 31, 2020   24,416,539      
Beginning balance at Jul. 31, 2020 43,678,736 $ 22,378 92,378,584 (70,000) (48,652,226)
Beginning balance (in shares) at Jul. 31, 2020   22,377,744      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 1,831,548   1,831,548    
Common stock issued for stock options exercised for cash 945,332 $ 502 944,830    
Common stock issued for stock options exercised for cash (in shares)   502,412      
Common stock issued for cashless stock options exercised 0 $ 22 (22)    
Common stock issued for cashless stock options exercised (in shares)   22,339      
Common stock issued for conversion of Convertible Notes 10,000,000 $ 1,399 9,998,601    
Common stock issued for conversion of Convertible Notes (in shares)   1,398,602      
Common stock issued for vested restricted stock units 0 $ 132 (132)    
Common stock issued for vested restricted stock units (in shares)   132,109      
Amortization of warrant based cost 9,125   9,125    
Cancellation of Treasury Stock 0 $ (17) (69,983) 70,000  
Cancellation of Treasury Stock (in shares)   (16,667)      
Net loss (4,370,525)       (4,370,525)
Ending balance at Oct. 31, 2020 $ 52,094,217 $ 24,417 $ 105,092,551 $ 0 $ (53,022,751)
Ending balance (in shares) at Oct. 31, 2020   24,416,539