Quarterly report pursuant to Section 13 or 15(d)

Note 16 - Stockholders' Equity (Tables)

v3.19.1
Note 16 - Stockholders' Equity (Tables)
9 Months Ended
Feb. 28, 2019
Stockholders' Equity Note [Abstract]  
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
The following table summarizes the significant terms of warrants outstanding at February 28, 2019. These warrants were granted as part of financing agreements. This table does not include the special warrants; see Special Warrant 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       35,782,952       2.73     $ 0.49       35,782,952     $ 0.49  
  0.50       2,736,500       2.98       0.50       2,736,500       0.50  
  0.60       17,500,000       2.76       0.60       17,500,000       0.60  
  0.75       1,042,738       2.37       0.75       1,042,738       0.75  
  0.80       1,343,400       2.79       0.80       1,343,400       0.80  
  1.10       279,875       2.79       1.10       279,875       1.10  
          58,685,465       2.74     $ 0.53       58,685,465     $ 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; see Special Warrant section below.

   

Number of

Shares

   

Weighted

Average

Exercise

Price

 

Warrants outstanding at May 31, 2018

    4,700,988     $ 0.62  

Granted

    54,399,477     $ 0.53  

Exercised

    (415,000

)

  $ 0.75  

Cancelled / Expired

    -     $ -  

Warrants outstanding at February 28, 2019

    58,685,465     $ 0.53