STOCK OPTIONS AND WARRANTS (Tables)
|
6 Months Ended |
Oct. 31, 2022 |
| Share-Based Payment Arrangement [Abstract] |
|
| Assumptions for options |
| Assumptions for options |
|
|
|
|
|
|
| |
|
Six Months Ended October 31, |
|
| |
|
2022 |
|
|
2021 |
|
| Risk-free interest rate |
|
|
2.9% |
|
|
|
0.92% |
|
| Expected volatility |
|
|
139% |
|
|
|
121% |
|
| Expected lives (years) |
|
|
2.5 |
|
|
|
2.5 |
|
| Expected dividend yield |
|
|
0.00% |
|
|
|
0.00% |
|
|
| Schedule of stock option activity |
| Schedule of stock option activity |
|
|
|
|
|
|
| Options |
|
Weighted Average Exercise Price per Share |
|
|
Weighted Average Grant Date Fair Value per Share |
|
| Outstanding, April 30, 2022 |
|
|
40,900 |
|
|
$ |
53.05 |
|
| Issued |
|
|
1,002 |
|
|
|
2.27 |
|
| Forfeited |
|
|
(3,966 |
) |
|
|
102.80 |
|
| Outstanding, October 31, 2022 |
|
|
37,936 |
|
|
$ |
46.51 |
|
| Exercisable, October 31, 2022 |
|
|
37,603 |
|
|
$ |
46.90 |
|
| Vested and expected to vest |
|
|
37,936 |
|
|
$ |
46.51 |
|
|
| Unvested stock option activity |
| Unvested stock option activity |
|
|
|
|
|
|
| |
|
Options |
|
|
Weighted Average Grant Date Fair Value per Share |
|
| |
|
|
|
|
|
|
| Unvested, April 30, 2022 |
|
|
4,000 |
|
|
$ |
– |
|
| Issued |
|
|
1,002 |
|
|
|
2.27 |
|
| Vested |
|
|
(4,669 |
) |
|
|
– |
|
| Forfeited |
|
|
– |
|
|
|
– |
|
| Unvested, October 31, 2022 |
|
|
333 |
|
|
$ |
2.50 |
|
|
| Schedule of options by exercise price |
| Schedule of options by exercise price |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercise Price |
|
|
Number of
Options
Outstanding |
|
|
Weighted
Average
Remaining
Contractual Life
(Years) of
Outstanding
Options |
|
|
Weighted
Average
Exercisable
Price Per Share |
|
|
Number of
Options
Exercisable |
|
|
Weighted Average
Exercise Price Per Share
of Exercisable
Options |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| $ |
83.70 |
|
|
|
6,000 |
|
|
|
0.10 |
|
|
$ |
83.70 |
|
|
|
6,000 |
|
|
$ |
83.70 |
|
| $ |
80.10 |
|
|
|
800 |
|
|
|
0.85 |
|
|
$ |
80.10 |
|
|
|
800 |
|
|
$ |
80.10 |
|
| $ |
80.85 |
|
|
|
667 |
|
|
|
0.25 |
|
|
$ |
80.85 |
|
|
|
667 |
|
|
$ |
80.85 |
|
| $ |
102.45 |
|
|
|
333 |
|
|
|
0.33 |
|
|
$ |
102.45 |
|
|
|
333 |
|
|
$ |
102.45 |
|
| $ |
97.35 |
|
|
|
333 |
|
|
|
0.47 |
|
|
$ |
97.35 |
|
|
|
333 |
|
|
$ |
97.35 |
|
| $ |
74.25 |
|
|
|
6,000 |
|
|
|
0.83 |
|
|
$ |
74.25 |
|
|
|
6,000 |
|
|
$ |
74.25 |
|
| $ |
57.00 |
|
|
|
800 |
|
|
|
1.90 |
|
|
$ |
57.00 |
|
|
|
800 |
|
|
$ |
57.00 |
|
| $ |
60.60 |
|
|
|
667 |
|
|
|
0.75 |
|
|
$ |
60.60 |
|
|
|
667 |
|
|
$ |
60.60 |
|
| $ |
55.50 |
|
|
|
333 |
|
|
|
0.83 |
|
|
$ |
55.50 |
|
|
|
333 |
|
|
$ |
55.50 |
|
| $ |
51.00 |
|
|
|
333 |
|
|
|
0.97 |
|
|
$ |
51.00 |
|
|
|
333 |
|
|
$ |
51.00 |
|
| $ |
61.20 |
|
|
|
6,000 |
|
|
|
1.31 |
|
|
$ |
61.20 |
|
|
|
6,000 |
|
|
$ |
61.20 |
|
| $ |
36.00 |
|
|
|
667 |
|
|
|
1.25 |
|
|
$ |
36.00 |
|
|
|
667 |
|
|
$ |
36.00 |
|
| $ |
37.05 |
|
|
|
333 |
|
|
|
1.33 |
|
|
$ |
37.05 |
|
|
|
333 |
|
|
$ |
37.05 |
|
| $ |
15.75 |
|
|
|
333 |
|
|
|
1.47 |
|
|
$ |
15.70 |
|
|
|
333 |
|
|
$ |
15.70 |
|
| $ |
10.05 |
|
|
|
6,000 |
|
|
|
1.90 |
|
|
$ |
10.05 |
|
|
|
6,000 |
|
|
$ |
10.05 |
|
| $ |
26.55 |
|
|
|
667 |
|
|
|
1.75 |
|
|
$ |
26.55 |
|
|
|
667 |
|
|
$ |
26.55 |
|
| $ |
16.20 |
|
|
|
334 |
|
|
|
1.83 |
|
|
$ |
16.20 |
|
|
|
334 |
|
|
$ |
16.20 |
|
| $ |
3.19 |
|
|
|
334 |
|
|
|
1.97 |
|
|
$ |
3.19 |
|
|
|
334 |
|
|
$ |
3.19 |
|
| $ |
2.50 |
|
|
|
6,000 |
|
|
|
2.50 |
|
|
$ |
2.50 |
|
|
|
5,667 |
|
|
$ |
2.50 |
|
| $ |
2.29 |
|
|
|
668 |
|
|
|
2.25 |
|
|
$ |
2.29 |
|
|
|
668 |
|
|
$ |
2.29 |
|
| $ |
2.24 |
|
|
|
334 |
|
|
|
2.33 |
|
|
$ |
2.24 |
|
|
|
334 |
|
|
$ |
2.24 |
|
| |
Total |
|
|
|
37,936 |
|
|
|
1.05 |
|
|
$ |
46.51 |
|
|
|
37,603 |
|
|
$ |
46.90 |
|
|
| Schedule of warrant activity |
| Schedule of warrant activity |
|
|
|
|
|
|
| |
|
Warrants |
|
|
Weighted Average Exercise Price Per Share
|
|
| Outstanding, April 30, 2022 |
|
|
10,772,736 |
|
|
$ |
4.59 |
|
| Issued |
|
|
– |
|
|
|
– |
|
| Exercised |
|
|
(880,000 |
) |
|
|
– |
|
| Expired |
|
|
(1,889 |
) |
|
|
– |
|
| Outstanding, October 31, 2022 |
|
|
9,890,847 |
|
|
|
– |
|
| Exercisable, October 31, 2022 |
|
|
9,890,847 |
|
|
$ |
4.99 |
|
|
| Schedule of warrants outstanding and exercisable |
| Schedule of warrants outstanding and exercisable |
|
|
|
|
|
|
|
|
|
| Exercise Prices |
|
Number of
Warrant Shares
Exercisable at
October 31, 2022 |
|
|
Weighted
Average
Remaining
Contractual
Life Years |
|
|
Weighted
Average
Exercise Price Per Share |
|
| |
|
|
|
|
|
|
|
|
|
| $4.25 |
|
|
1,506,141 |
|
|
|
3.78 |
|
|
|
|
|
| $5.3125 |
|
|
264,706 |
|
|
|
3.78 |
|
|
|
|
|
| $5.00 |
|
|
7,000,000 |
|
|
|
3.82 |
|
|
|
|
|
| $6.25 |
|
|
1,050,000 |
|
|
|
3.80 |
|
|
|
|
|
| $0.001 |
|
|
70,000 |
|
|
|
– |
|
|
|
|
|
| |
|
|
9,890,847 |
|
|
|
3.81 |
|
|
$ |
4.99 |
|
|