Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.19.3.a.u2
Stockholders' Equity (Tables)
6 Months Ended
Nov. 30, 2019
Stockholders' Equity Note [Abstract]  
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]
The following table summarizes the significant terms of warrants outstanding at November 30, 2019. This table does not include the unit warrants. See Unit Warrants section below.

 

Range of 

exercise

Prices

   

 

Number of 

warrants

Outstanding

   

 

Weighted 

average

remaining

contractual

life (years)

   

Weighted 

average

exercise

price of

outstanding 

Warrants

   

 

Number of

warrants 

Exercisable

   

Weighted

average

exercise

price of

exercisable 

Warrants

 
$ 0.49       33,465,110       2.00     $ 0.49       33,465,110     $ 0.49  
  0.50       2,736,500       2.23       0.50       2,736,500       0.50  
  0.60       17,500,000       2.00       0.60       17,500,000       0.60  
  0.75       837,500       1.23       0.75       837,500       0.75  
  1.10       296,035       2.00       1.10       296,035       1.10  
          54,837,145       2.00     $ 0.53       54,835,145     $ 0.53  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Transactions involving warrants are summarized as follows. This table does not include the special warrants or unit warrants. See Special Warrants and Unit Warrants sections below.

   

Number of

Shares

   

Weighted

Average

Exercise

Price

 

Warrants outstanding at May 31, 2018

    4,497,750     $ 0.61  

Granted

    50,738,235     $ 0.53  

Exercised

    (415,000

)

  $ 0.75  

Cancelled / Expired

    -     $ -  
                 

Warrants outstanding at May 31, 2019

    54,820,985     $ 0.53  

Granted

    16,160     $ 1.10  

Exercised

    -     $ -  

Cancelled / Expired

    -     $ -  

Warrants outstanding at November 30, 2019

    54,837,145     $ 0.53