| Schedule of stock option activity |
| |
|
Number
of Options |
|
|
Weighted-Average
Exercise Price |
|
|
Weighted-Average
Remaining Contractual Term |
|
|
Approximate
Aggregate Instrinsic Value |
|
| Oustanding at beginning
of period |
|
|
315,000 |
|
|
$ |
5.76 |
|
|
|
|
|
|
|
| Granted |
|
|
26,000 |
|
|
|
4.17 |
|
|
|
|
|
|
|
| Exercised |
|
|
- |
|
|
|
- |
|
|
|
|
|
|
|
| Forfeited
or expired |
|
|
(12,500 |
) |
|
|
7.21 |
|
|
|
|
|
|
|
| Outstanding
at May 31, 2015 |
|
|
328,500 |
|
|
$ |
4.99 |
|
|
|
6.42 |
|
|
$ |
82,270 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Options
exercisable at May 31, 2015 |
|
|
235,833 |
|
|
$ |
4.83 |
|
|
|
5.56 |
|
|
$ |
97,117 |
|
|