Annual report pursuant to Section 13 and 15(d)

Derivatives (Tables)

v3.21.2
Derivatives (Tables)
 12 Months Ended
Apr. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Assumptions used to determine fair value of derivative warrant liability
    April 30, 2021
Risk-free interest rate     0.08-0.61%  
Expected dividend yield     —    
Expected term (in years)     1.54-5.00  
Expected volatility     86.74-110.56 %  
Changes in derivative liability
     
Recognized upon closing of October 2020 financing   $ 728,587  
Recognized upon closing of January 2021 financing     4,981,701  
Eliminated upon conversion of notes/exercise of warrants     (5,390,415 )
Changes in fair value from issuance through April 30, 2021     2,492,894
Derivative liability at April 30, 2021   $ 2,812,767  
Assumptions used to determine fair value of remaining derivative liability
    April 30, 2021
Current stock price   $ 4.04  
Risk-free interest rate     0.08-0.61%  
Expected dividend yield     —    
Expected term (in years)     1.54-5.00  
Expected volatility     86.74-110.56 %