Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

v3.21.2
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($)
Total
Common Stock
Additional Paid-In Capital
Treasury Stock
Accumulated Deficit
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 487,110   487,110    
Common stock issued for stock options exercised for cash 1,269,982 $ 415 1,269,567    
Common stock issued for stock options exercised for cash (in shares)   415,175      
Common stock issued for warrants exercised for cash 1,081,792 $ 192 1,081,600    
Common stock issued for cashless warrant exercise (in shares)   192,049      
Modification charge for warrants exercised 25,966   25,966    
Amortization of warrant based cost 9,125   9,125    
Net loss (943,196)       (943,196)
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, 2021 49,090,474 $ 25,067 109,040,824 (1,817,414) (58,158,003)
Beginning balance (in shares) at Apr. 30, 2021   25,066,297      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation 542,712   542,712    
Common stock issued for stock options exercised for cash 22,548 $ 5 22,543    
Common stock issued for stock options exercised for cash (in shares)   5,097      
Common stock issued for vested restricted stock units 0 $ 16 (16)    
Common stock issued for vested restricted stock units (in shares)   15,657      
Amortization of warrant based cost 11,458   11,458    
Net loss (870,888)       (870,888)
Ending balance at Jul. 31, 2021 $ 48,796,304 $ 25,088 $ 109,617,521 $ (1,817,414) $ (59,028,891)
Ending balance (in shares) at Jul. 31, 2021   25,087,051