| Warrants activities |
| |
|
Number
of Warrant Shares |
|
|
Exercise
Price Range Per Share |
|
|
Weighted
Average Exercise Price |
|
| |
|
|
|
|
|
|
|
|
|
| Balance,
February 28, 2017 |
|
|
1,647,670 |
|
|
$ |
0.80 to
$6.00 |
|
|
$ |
2.91 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Granted |
|
|
550,000 |
|
|
$ |
5.25 |
|
|
$ |
5.25 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Exercised |
|
|
(22,548 |
) |
|
$ |
0.80 |
|
|
$ |
0.80 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Expired |
|
|
(314,667 |
) |
|
$ |
6.00 |
|
|
$ |
6.00 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Balance,
May 31, 2017 |
|
|
1,860,455 |
|
|
$ |
0.80 to $6.00 |
|
|
$ |
3.11 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Earned
and exercisable, May 31, 2017 |
|
|
836,705 |
|
|
$ |
0.80
to $6.00 |
|
|
$ |
2.82 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Unvested,
May 31, 2017 |
|
|
1,023,750 |
|
|
$ |
0.80
to $5.25 |
|
|
$ |
3.34 |
|
|
| Outstanding and exercisable warrants |
| |
|
|
Warrants
Outstanding |
|
|
Warrants
Exercisable |
|
| Range
of Exercise Prices |
|
|
Number
Outstanding |
|
|
Average
Remaining Contractual Life (in years) |
|
|
Weighted
Average Exercise Price |
|
|
Number
Exercisable |
|
|
Average
Remaining Contractual Life (in years) |
|
|
Weighted
Average Exercise Price |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| $ |
0.80 |
|
|
|
912,452 |
|
|
|
0.51 |
|
|
$ |
0.80 |
|
|
|
507,452 |
|
|
|
0.51 |
|
|
$ |
0.80 |
|
| $ |
6.00 |
|
|
|
323,003 |
|
|
|
0.08 |
|
|
$ |
6.00 |
|
|
|
323,003 |
|
|
|
0.08 |
|
|
$ |
6.00 |
|
| $ |
3.00 |
|
|
|
75,000 |
|
|
|
1.02 |
|
|
$ |
3.00 |
|
|
|
6,250 |
|
|
|
1.02 |
|
|
$ |
3.00 |
|
| $ |
5.25 |
|
|
|
550,000 |
|
|
|
9.98 |
|
|
$ |
5.25 |
|
|
|
- |
|
|
|
- |
|
|
$ |
- |
|
|