Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.22.2.2
Stockholders' Equity (Tables)
3 Months Ended
Aug. 31, 2022
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, 2022. 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

 
                                             

$

1.60

     

191,094

     

1.73

   

$

1.61

     

191,094

   

$

1.60

 
 

1.65

     

757,580

     

2.33

     

1.65

     

757,580

     

1.65

 
 

2.40

     

781,250

     

0.70

     

2.40

     

781,250

     

0.70

 
         

1,729,924

     

1.53

   

$

1.98

     

1,729,924

   

$

2.40

 

 

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, 2021

    13,449,411     $ 2.12  

Granted

    874,665     $ 1.65  

Exercised

    -     $ -  

Cancelled / Expired

    (12,644,153

)

  $ 2.09  

Warrants outstanding at May 31, 2022

    1,729,924     $ 1.98  

Granted

    -     $ -  

Exercised

    -     $ -  

Cancelled / Expired

    -     $ -  

Warrants outstanding at August 31, 2022

    1,729,924     $ 1.98