| Schedule of stock option activity |
| |
|
|
|
|
|
|
|
Weighted |
|
|
|
|
| |
|
|
|
|
Weighted |
|
|
Average |
|
|
|
|
| |
|
|
|
|
Average |
|
|
Remaining |
|
|
Aggregate |
|
| |
|
No. of |
|
|
Exercise |
|
|
Contractual |
|
|
Intrinsic |
|
| |
|
Options |
|
|
Price |
|
|
Term |
|
|
Value |
|
| Balance Outstanding, August 31, 2017 |
|
|
5,275,500 |
|
|
$ |
1.73 |
|
|
|
8.0 years |
|
|
$ |
917,610 |
|
| Granted |
|
|
4,098,500 |
|
|
$ |
4.42 |
|
|
|
9.7 years |
|
|
|
- |
|
| Exercised |
|
|
834,459 |
|
|
$ |
0.56 |
|
|
|
- |
|
|
|
- |
|
| Forfeited |
|
|
1,579,375 |
|
|
$ |
2.60 |
|
|
|
- |
|
|
|
- |
|
| Balance Outstanding, May 31, 2018 |
|
|
6,960,166 |
|
|
$ |
3.25 |
|
|
|
8.7 years |
|
|
|
23,250,945 |
|
| Exercisable, May 31, 2018 |
|
|
2,135,549 |
|
|
$ |
1.74 |
|
|
|
7.5 years |
|
|
|
16,093,825 |
|
|