Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

v3.20.2
Summary of Significant Accounting Policies (Tables)
3 Months Ended
Aug. 31, 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
   $ —