Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

v3.20.4
Summary of Significant Accounting Policies (Tables)
6 Months Ended
Nov. 30, 2020
Reconciliation of Liability Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)
The following is a reconciliation of the beginning and ending balances for liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) from inception to the year ended May 31, 2020 (in thousands):
 
Investor warrants issued with registered direct equity offering
   $ 4,360  
Placement agent warrants issued with registered direct equity offering
     819  
Fair value adjustments
     (3,855
  
 
 
 
Balance at May 31, 2018
     1,324  
Inception date value of redemption provisions
     2,750  
Fair value adjustments—convertible notes
     (745
Fair value adjustments—warrants
     (922
  
 
 
 
Balance at May 31, 2019
     2,407  
Fair value adjustments—convertible notes
     (2,005
Fair value adjustments—warrants
     11,547  
Exercise of derivative warrants
     (11,949
  
 
 
 
Balance at May 31, 2020
   $ —  
  
 
 
 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
For this reason, the following options, warrants, unvested restricted stock units, convertible preferred stock including undeclared dividends and share reservations for convertible notes, which are issuable into common stock were not included in the computation of basic and diluted weighted average number of shares of common stock outstanding for the six months ended November 30, 2020 and November 30, 2019 (in thousands), respectively:
 
    
Six Months Ended November 30,
 
    
2020
    
2019
 
Stock options, warrants & unvested restricted stock
     82,796        177,457  
Convertible notes payable
     12,000        10,048  
Convertible preferred stock
     31,490        17,550