| 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 August 31, 2018. These warrants were granted as part of financing agreements. This table does not include the special warrants; see Special Warrant section below:
| |
|
|
|
|
|
|
|
Weighted
|
|
|
Weighted
|
|
|
|
|
|
|
Weighted
|
|
| |
|
|
|
|
|
|
|
average
|
|
|
average
|
|
|
|
|
|
|
average
|
|
|
Range of
|
|
|
Number of
|
|
|
remaining
|
|
|
exercise
|
|
|
|
|
|
|
exercise
|
|
|
exercise
|
|
|
warrants
|
|
|
contractual
|
|
|
price of
|
|
|
Number of
|
|
|
price of
|
|
|
Prices
|
|
|
Outstanding
|
|
|
life (years)
|
|
|
outstanding Warrants
|
|
|
warrants Exercisable
|
|
|
exercisable Warrants
|
|
| $ |
0.49 |
|
|
|
2,317,842 |
|
|
|
2.81 |
|
|
$ |
0.49 |
|
|
|
2,317,842 |
|
|
$ |
0.49 |
|
| |
0.50 |
|
|
|
2,736,500 |
|
|
|
3.48 |
|
|
|
0.50 |
|
|
|
2,736,500 |
|
|
|
0.50 |
|
| |
0.60 |
|
|
|
17,500,000 |
|
|
|
3.25 |
|
|
|
0.60 |
|
|
|
17,500,000 |
|
|
|
0.60 |
|
| |
0.75 |
|
|
|
1,107,738 |
|
|
|
2.85 |
|
|
|
0.75 |
|
|
|
1,107,738 |
|
|
|
0.75 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
23,662,080 |
|
|
|
3.22 |
|
|
$ |
0.57 |
|
|
|
23,662,080 |
|
|
$ |
0.57 |
|
|
The following table summarizes the significant terms of warrants outstanding at May 31, 2018. These warrants were granted as part of financing agreements. This table includes the 205,238 Unit Warrants:
| |
|
|
|
|
|
|
|
Weighted
|
|
|
Weighted
|
|
|
|
|
|
|
Weighted
|
|
| |
|
|
|
|
|
|
|
average
|
|
|
average
|
|
|
|
|
|
|
average
|
|
|
Range of
|
|
|
Number of
|
|
|
remaining
|
|
|
exercise
|
|
|
|
|
|
|
exercise
|
|
|
exercise
|
|
|
warrants
|
|
|
contractual
|
|
|
price of
|
|
|
Number of
|
|
|
price of
|
|
|
Prices
|
|
|
Outstanding
|
|
|
life (years)
|
|
|
outstanding Warrants
|
|
|
warrants Exercisable
|
|
|
exercisable Warrants
|
|
| $ |
0.75 |
|
|
|
2,825,988 |
|
|
|
3.33 |
|
|
$ |
0.75 |
|
|
|
2,825,988 |
|
|
$ |
0.75 |
|
| |
0.60 |
|
|
|
1,875,000 |
|
|
|
4.96 |
|
|
|
0.60 |
|
|
|
1,875,000 |
|
|
|
0.60 |
|
| |
|
|
|
|
4,700,988 |
|
|
|
3.98 |
|
|
|
0.69 |
|
|
|
4,700,988 |
|
|
|
0.69 |
|
|
| 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 |
|
|
$ |
0.75 |
|
|
Granted
|
|
|
19,311,092 |
|
|
$ |
0.58 |
|
|
Exercised
|
|
|
(350,000 |
)
|
|
$ |
0.75 |
|
|
Cancelled / Expired
|
|
|
- |
|
|
$ |
- |
|
|
Warrants outstanding at August 31, 2018
|
|
|
23,662,080 |
|
|
$ |
0.57 |
|
|
Transactions involving warrants are summarized as follows:
| |
|
Number of
Shares
|
|
|
Weighted
Average
Exercise
Price
|
|
|
Warrants outstanding at May 31, 2017
|
|
|
- |
|
|
$ |
- |
|
|
Granted
|
|
|
4,700,988 |
|
|
$ |
0.69 |
|
|
Exercised
|
|
|
- |
|
|
$ |
- |
|
|
Cancelled / Expired
|
|
|
- |
|
|
$ |
- |
|
|
Warrants outstanding at May 31, 2018
|
|
|
4,700,988 |
|
|
$ |
0.69 |
|
|