Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.23.1
Stockholders' Equity (Tables)
9 Months Ended
Feb. 28, 2023
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 February 28, 2023. 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

$

0.40

 

 

 

20,232,775

 

 

 

2.55

 

 

 

0.40

 

 

 

20,232,775

 

 

 

0.40

 

 

1.60

 

 

 

191,094

 

 

 

2.55

 

 

$

1.60

 

 

 

191,094

 

 

$

1.60

 

 

1.65

 

 

 

757,580

 

 

 

1.83

 

 

 

1.65

 

 

 

757,580

 

 

 

1.65

 

 

2.40

 

 

 

781,250

 

 

 

0.21

 

 

 

2.40

 

 

 

781,250

 

 

 

2.40

 

 

 

 

 

 

21,962,699

 

 

 

2.44

 

 

$

0.53

 

 

 

21,962,699

 

 

$

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 unit warrants. See Unit Warrants section below.

 

   

Number of

Shares

   

Weighted

Average

Exercise

Price

 

Warrants outstanding at May 31, 2021

    13,499,411     $ 2.12  

Granted

    874,666     $ 1.65  

Exercised

    -     $ -  

Cancelled / Expired

    (12,644,153

)

  $ 2.09  

Warrants outstanding at May 31, 2022

    1,729,924     $ 1.98  

Granted

    20,232,775     $ 0.40  

Exercised

    -     $ -  

Cancelled / Expired

    -     $ -  

Warrants outstanding at February 28, 2023

    21,962,699     $ 0.53