Quarterly report pursuant to Section 13 or 15(d)

Stockholders??? Equity (Tables)

v3.21.2
Stockholders’ Equity (Tables)
3 Months Ended
Aug. 31, 2021
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 August 31, 2021. 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

 
$ 0.41       468,333       1.17     $ 0.41       468,333     $ 0.41  
  0.49       33,465,110       0.12       0.49       33,465,110       0.49  
  0.50       2,736,500       0.24       0.50       2,736,500       0.50  
  0.60       3,125,000       1.02       0.60       3,125,000       0.60  
  1.10       296,035       0.34       1.10       296,035       1.10  
          40,090,978       0.21     $ 0.50       40,090,978     $ 0.50  

 

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

Transactions involving warrants are summarized as follows. This table does not include the unit warrants. See Unit Warrants section below.

 

   

Number of

Shares

   

Weighted Average

Exercise Price

 

Warrants outstanding at May 31, 2020

    54,835,145     $ 0.53  

Granted

    -     $ -  

Exercised

    -     $ -  

Cancelled / Expired

    (837,500

)

  $ 0.75  
                 

Warrants outstanding at May 31, 2021

    53,997,645     $ 0.50  

Granted

    468,333     $ 0.41  

Exercised

    -     $ -  

Cancelled / Expired

    (14,375,000

)

  $ 0.60  

Warrants outstanding at August 31, 2021

    40,090,978     $ 0.50