6. STOCK OPTIONS AND WARRANTS (Tables)
|
9 Months Ended |
Jan. 31, 2017 |
|---|
| Employee stock option activity |
| |
|
Options |
|
|
Weighted
Average
Exercise
Price |
|
|
Weighted Average Grant
Date Fair Value per Share |
|
| Outstanding, April 30, 2016 |
|
|
68,050,000 |
|
|
$ |
0.13 |
|
|
$ |
0.09 |
|
| Issued |
|
|
13,100,000 |
|
|
|
0.07 |
|
|
|
0.04 |
|
| Exercised |
|
|
– |
|
|
|
|
|
|
|
|
|
| Total Outstanding, January 31, 2017 |
|
|
81,150,000 |
|
|
|
0.12 |
|
|
|
0.09 |
|
| Total Exercisable, January 31, 2017 |
|
|
68,500,000 |
|
|
|
0.13 |
|
|
|
– |
|
| Total Vested and expected to vest as of
January 31, 2017 |
|
|
68,650,000 |
|
|
$ |
0.13 |
|
|
$ |
– |
|
|
| Outstanding stock options by exercise price |
| |
|
Exercise Price |
|
| Exercise Price |
|
$ |
0.19 |
|
|
$ |
0.11 |
|
|
$ |
0.18 |
|
|
$ |
0.063 |
|
|
$ |
0.069 |
|
| Number of Options Outstanding |
|
|
25,000,000 |
|
|
|
27,200,000 |
|
|
|
250,000 |
|
|
|
15,600,000 |
|
|
|
13,100,000 |
|
| Weighted Average Remaining
Contractual Life (years) of Outstanding Options |
|
|
2.66 |
|
|
|
2.92 |
|
|
|
3.22 |
|
|
|
3.92 |
|
|
|
4.25 |
|
| Weighted Average Exercise Price |
|
$ |
0.19 |
|
|
$ |
0.11 |
|
|
$ |
0.18 |
|
|
$ |
0.063 |
|
|
$ |
0.069 |
|
| Number of Options Exercisable |
|
|
25,000,000 |
|
|
|
27,200,000 |
|
|
|
250,000 |
|
|
|
15,600,000 |
|
|
|
450,000 |
|
| Weighted Average Exercise Price of Exercisable
Options |
|
$ |
0.19 |
|
|
$ |
0.11 |
|
|
$ |
0.18 |
|
|
$ |
0.063 |
|
|
$ |
0.069 |
|
|
| Warrant activity |
| |
|
Warrants |
|
|
Weighted
Average
Exercise Price |
|
| Outstanding, April 30, 2016 |
|
|
84,969,908 |
|
|
$ |
0.16 |
|
| Issued |
|
|
769,231 |
|
|
|
0.07 |
|
| Expired |
|
|
(18,755,200 |
) |
|
|
0.25 |
|
| Total Outstanding, January 31,2017 |
|
|
66,983,939 |
|
|
|
0.13 |
|
| Total Exercisable, January 31, 2017 |
|
|
66,983,939 |
|
|
$ |
0.13 |
|
|
| Schedule of warrants outstanding by exercise prices |
| Range of Exercise Prices |
|
Number of
Warrant Shares
Exercisable at
01/31/2017 |
|
|
Weighted
Average
Remaining
Contractual
Life |
|
|
Weighted
Average
Exercise
Price |
|
| $0.075, $0.11, $0.12, $0.18 and $0.25 |
|
|
66,983,939 |
|
|
|
2.06 |
|
|
$ |
0.13 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Five Year Term - $0.075 |
|
|
1,056,000 |
|
|
|
0.69 |
|
|
|
|
|
| Five Year Term - $0.12 |
|
|
35,347,508 |
|
|
|
2.41 |
|
|
|
|
|
| Five Year Term - $0.18 |
|
|
19,811,200 |
|
|
|
0.91 |
|
|
|
|
|
| Five Year Term - $0.065 |
|
|
769,231 |
|
|
|
4.89 |
|
|
|
|
|
| Five Year Term - $0.11 |
|
|
10,000,000 |
|
|
|
3.14 |
|
|
|
|
|
| |
|
|
66,983,939 |
|
|
|
|
|
|
|
|
|
|
| Employee Options [Member] |
|
| Assumptions |
| |
|
Nine Months Ended January 31, |
|
| |
|
2017 |
|
|
2016 |
|
| Risk-free interest rate |
|
|
– |
|
|
|
1.36% |
|
| Expected volatility |
|
|
– |
|
|
|
111% |
|
| Expected lives (years) |
|
|
– |
|
|
|
5.0 |
|
| Expected dividend yield |
|
|
– |
|
|
|
0.00% |
|
|
| Non-Employee Options [Member] |
|
| Assumptions |
| |
|
Nine Months Ended January 31, |
|
| |
|
2017 |
|
|
2016 |
|
| Risk-free interest rate |
|
|
1.90% |
|
|
|
– |
|
| Expected volatility |
|
|
110% |
|
|
|
– |
|
| Expected lives (years) |
|
|
5.0 |
|
|
|
– |
|
| Expected dividend yield |
|
|
0.00% |
|
|
|
– |
|
|