5. STOCK OPTIONS AND WARRANTS (Tables)
|
6 Months Ended |
Oct. 31, 2018 |
Employee stock option activity |
|
|
Options |
|
|
Weighted
Average
Exercise Price
|
|
|
Weighted
Average
Grant Date
Fair Value
per Share
|
|
|
|
|
|
|
|
|
|
|
|
Outstanding, April 30, 2018 |
|
|
95,250,000 |
|
|
$ |
0.11 |
|
|
$ |
0.11 |
|
Issued |
|
|
1,200,000 |
|
|
|
0.05 |
|
|
|
0.05 |
|
Forfeited |
|
|
– |
|
|
|
– |
|
|
|
– |
|
Exercised |
|
|
– |
|
|
|
– |
|
|
|
– |
|
Outstanding, October 31, 2018 |
|
|
96,450,000 |
|
|
$ |
0.11 |
|
|
$ |
0.11 |
|
Exercisable, October 31, 2018 |
|
|
93,950,000 |
|
|
$ |
0.12 |
|
|
$ |
– |
|
Vested and expected to vest |
|
|
96,450,000 |
|
|
$ |
0.11 |
|
|
$ |
– |
|
|
Unvested employee stock option activity |
|
|
|
Options |
|
|
Weighted
Average
Grant Date
Fair Value
|
|
|
|
|
|
|
|
|
|
|
|
Non-vested, April 30, 2018 |
|
|
|
7,200,000 |
|
|
$ |
0.06 |
|
Granted |
|
|
|
1,200,000 |
|
|
|
0.05 |
|
Vested |
|
|
|
(5,900,000 |
) |
|
|
0.06 |
|
Forfeited |
|
|
|
– |
|
|
|
– |
|
Non-vested, October 31, 2018 |
|
|
|
2,500,000 |
|
|
$ |
0.06 |
|
|
Range of outstanding stock options |
Exercise Price |
|
|
Number of Options Outstanding |
|
|
Weighted Average Remaining Contractual Life (years) of Outstanding Options |
|
|
Weighted Average Exercisable Price |
|
|
Number of Options Exercisable |
|
|
Weighted Average Exercise Price of Exercisable Options |
|
$ |
0.190 |
|
|
|
25,000,000 |
|
|
|
0.46 |
|
|
$ |
0.190 |
|
|
|
25,000,000 |
|
|
$ |
0.190 |
|
$ |
0.110 |
|
|
|
27,200,000 |
|
|
|
0.61 |
|
|
$ |
0.110 |
|
|
|
27,200,000 |
|
|
$ |
0.110 |
|
$ |
0.184 |
|
|
|
250,000 |
|
|
|
0.73 |
|
|
$ |
0.184 |
|
|
|
250,000 |
|
|
$ |
0.184 |
|
$ |
0.063 |
|
|
|
15,600,000 |
|
|
|
1.30 |
|
|
$ |
0.063 |
|
|
|
15,600,000 |
|
|
$ |
0.063 |
|
$ |
0.104 |
|
|
|
10,450,000 |
|
|
|
2.16 |
|
|
$ |
0.104 |
|
|
|
10,450,000 |
|
|
$ |
0.104 |
|
$ |
0.0685 |
|
|
|
600,000 |
|
|
|
2.50 |
|
|
$ |
0.0685 |
|
|
|
600,000 |
|
|
$ |
0.0685 |
|
$ |
0.058 |
|
|
|
2,450,000 |
|
|
|
2.74 |
|
|
$ |
0.058 |
|
|
|
2,450,000 |
|
|
$ |
0.058 |
|
$ |
0.0734 |
|
|
|
1,200,000 |
|
|
|
3.50 |
|
|
$ |
0.0734 |
|
|
|
1,200,000 |
|
|
$ |
0.0734 |
|
$ |
0.0729 |
|
|
|
1,800,000 |
|
|
|
3.69 |
|
|
$ |
0.0729 |
|
|
|
1,600,000 |
|
|
$ |
0.0729 |
|
$ |
0.089 |
|
|
|
1,200,000 |
|
|
|
1.86 |
|
|
$ |
0.089 |
|
|
|
1,200,000 |
|
|
$ |
0.089 |
|
$ |
0.0553 |
|
|
|
500,000 |
|
|
|
1.97 |
|
|
$ |
0.0553 |
|
|
|
500,000 |
|
|
$ |
0.0553 |
|
$ |
0.0534 |
|
|
|
1,200,000 |
|
|
|
4.85 |
|
|
$ |
0.0534 |
|
|
|
400,000 |
|
|
$ |
0.0534 |
|
$ |
0.0558 |
|
|
|
9,000,000 |
|
|
|
2.50 |
|
|
$ |
0.0558 |
|
|
|
7,500,000 |
|
|
$ |
0.0558 |
|
|
Total |
|
|
|
96,450,000 |
|
|
|
1.28 |
|
|
$ |
0.12 |
|
|
|
93,950,000 |
|
|
$ |
0.12 |
|
|
Warrant activity |
|
|
|
Warrants |
|
|
Weighted
Average
Exercise Price
|
|
Outstanding, April 30, 2018 |
|
|
|
33,993,104 |
|
|
$ |
0.10 |
|
Issued |
|
|
|
3,311,966 |
|
|
|
0.02 |
|
Expired |
|
|
|
– |
|
|
|
– |
|
Outstanding, October 31, 2018 |
|
|
|
37,305,070 |
|
|
|
0.09 |
|
Exercisable, October 31, 2018 |
|
|
|
37,305,070 |
|
|
$ |
0.09 |
|
|
Schedule of warrants outstanding and exercisable |
Exercise Prices |
|
Number of
Warrant Shares
Exercisable at
October 31, 2018
|
|
|
Weighted
Average
Remaining
Contractual
Life
|
|
|
Weighted
Average
Exercise Price
|
|
$0.018, $0.025, $0.026, $0.03, $0.0575, $0.065, $0.11 and $0.12 |
|
|
37,305,070 |
|
|
|
2.42 |
|
|
$ |
0.09 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Five Year Term – $0.12 |
|
|
17,854,308 |
|
|
|
2.12 |
|
|
|
|
|
Five Year Term – $0.11 |
|
|
10,000,000 |
|
|
|
1.39 |
|
|
|
|
|
Five Year Term – $0.065 |
|
|
769,231 |
|
|
|
3.14 |
|
|
|
|
|
Five Year Term – $0.0575 |
|
|
869,565 |
|
|
|
3.43 |
|
|
|
|
|
Five Year Term – $0.03 |
|
|
2,500,000 |
|
|
|
4.07 |
|
|
|
|
|
Five Year Term – $0.026 |
|
|
1,923,077 |
|
|
|
4.66 |
|
|
|
|
|
Five Year Term – $0.025 |
|
|
2,000,000 |
|
|
|
3.74 |
|
|
|
|
|
Five Year Term – $0.018 |
|
|
1,388,889 |
|
|
|
4.58 |
|
|
|
|
|
|
|
|
37,305,070 |
|
|
|
|
|
|
|
|
|
|
Employee Options [Member] |
|
Assumptions |
|
|
Six Months Ended October 31, |
|
|
|
2018 |
|
|
2017 |
|
Risk-free interest rate |
|
|
– |
|
|
|
2.0 |
% |
Expected volatility |
|
|
– |
|
|
|
107 |
% |
Expected lives (years) |
|
|
– |
|
|
|
2.5 |
|
Expected dividend yield |
|
|
– |
|
|
|
0.00 |
% |
|
Non-Employee Options [Member] |
|
Assumptions |
|
|
Six Months Ended October 31, |
|
|
|
2018 |
|
|
2017 |
|
Risk-free interest rate |
|
|
2.8 |
% |
|
|
1.8 |
% |
Expected volatility |
|
|
97 |
% |
|
|
108 |
% |
Expected lives (years) |
|
|
4.85 |
|
|
|
5.0 |
|
Expected dividend yield |
|
|
0.00 |
% |
|
|
0.00 |
% |
|