STOCK OPTIONS AND WARRANTS (Tables)
|
6 Months Ended |
Oct. 31, 2021 |
| Share-based Payment Arrangement [Abstract] |
|
| Assumptions for options |
| Assumptions for options |
|
|
|
|
|
|
| |
|
Six Months Ended October 31, |
|
| |
|
2021 |
|
|
2020 |
|
| Risk-free interest rate |
|
|
0.92% |
|
|
|
0.3% |
|
| Expected volatility |
|
|
121% |
|
|
|
92% |
|
| Expected term (years) |
|
|
2.5 |
|
|
|
2.5 |
|
| Expected dividend yield |
|
|
0.00% |
|
|
|
0.00% |
|
|
| Stock option activity |
| Stock option activity |
|
|
|
|
|
|
|
|
|
| |
|
Options |
|
|
Weighted Average Exercise
Price
per Share |
|
|
Weighted Average Grant Date Fair Value per Share |
|
| |
|
|
|
|
|
|
|
|
|
| Outstanding, April 30, 2021 |
|
|
41,333 |
|
|
$ |
79.97 |
|
|
$ |
79.97 |
|
| Issued |
|
|
1,334 |
|
|
|
18.12 |
|
|
|
18.12 |
|
| Forfeited |
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Exercised |
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Outstanding, October 31, 2021 |
|
|
42,667 |
|
|
$ |
78.04 |
|
|
$ |
78.04 |
|
| Exercisable, October 31, 2021 |
|
|
41,667 |
|
|
$ |
79.67 |
|
|
$ |
– |
|
| Vested and expected to vest |
|
|
42,667 |
|
|
$ |
78.04 |
|
|
$ |
– |
|
|
| Unvested stock option activity |
| Unvested stock option activity |
|
|
|
|
|
|
| |
|
Options |
|
|
Weighted Average Grant Date Fair Value per Share |
|
| |
|
|
|
|
|
|
| Unvested, April 30, 2021 |
|
|
4,000 |
|
|
$ |
10.05 |
|
| Granted |
|
|
1,334 |
|
|
|
18.12 |
|
| Vested |
|
|
(4,334 |
) |
|
|
– |
|
| Forfeited |
|
|
– |
|
|
|
– |
|
| Unvested, October 31, 2021 |
|
|
1,000 |
|
|
$ |
10.05 |
|
|
| 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
of Exercisable
Options |
|
| $ |
156.00 |
|
|
|
6,967 |
|
|
|
0.23 |
|
|
$ |
156.00 |
|
|
|
6,967 |
|
|
$ |
156.00 |
|
| $ |
87.00 |
|
|
|
1,634 |
|
|
|
0.50 |
|
|
$ |
87.00 |
|
|
|
1,634 |
|
|
$ |
87.00 |
|
| $ |
110.10 |
|
|
|
800 |
|
|
|
0.50 |
|
|
$ |
110.10 |
|
|
|
800 |
|
|
$ |
110.10 |
|
| $ |
109.35 |
|
|
|
1,200 |
|
|
|
0.69 |
|
|
$ |
109.35 |
|
|
|
1,200 |
|
|
$ |
109.35 |
|
| $ |
133.50 |
|
|
|
800 |
|
|
|
0.71 |
|
|
$ |
133.50 |
|
|
|
800 |
|
|
$ |
133.50 |
|
| $ |
82.95 |
|
|
|
333 |
|
|
|
0.47 |
|
|
$ |
82.95 |
|
|
|
333 |
|
|
$ |
82.95 |
|
| $ |
83.70 |
|
|
|
6,000 |
|
|
|
0.70 |
|
|
$ |
83.70 |
|
|
|
6,000 |
|
|
$ |
83.70 |
|
| $ |
80.10 |
|
|
|
800 |
|
|
|
1.85 |
|
|
$ |
80.10 |
|
|
|
800 |
|
|
$ |
80.10 |
|
| $ |
80.85 |
|
|
|
667 |
|
|
|
0.75 |
|
|
$ |
80.85 |
|
|
|
667 |
|
|
$ |
80.85 |
|
| $ |
102.45 |
|
|
|
333 |
|
|
|
0.83 |
|
|
$ |
102.45 |
|
|
|
333 |
|
|
$ |
102.45 |
|
| $ |
97.35 |
|
|
|
333 |
|
|
|
0.97 |
|
|
$ |
97.35 |
|
|
|
333 |
|
|
$ |
97.35 |
|
| $ |
74.25 |
|
|
|
6,000 |
|
|
|
1.43 |
|
|
$ |
74.25 |
|
|
|
6,000 |
|
|
$ |
74.25 |
|
| $ |
57.00 |
|
|
|
800 |
|
|
|
2.90 |
|
|
$ |
57.00 |
|
|
|
800 |
|
|
$ |
57.00 |
|
| $ |
60.60 |
|
|
|
667 |
|
|
|
1.25 |
|
|
$ |
60.60 |
|
|
|
667 |
|
|
$ |
60.60 |
|
| $ |
55.50 |
|
|
|
333 |
|
|
|
1.33 |
|
|
$ |
55.50 |
|
|
|
333 |
|
|
$ |
55.50 |
|
| $ |
51.00 |
|
|
|
333 |
|
|
|
1.47 |
|
|
$ |
51.00 |
|
|
|
333 |
|
|
$ |
51.00 |
|
| $ |
61.20 |
|
|
|
6,000 |
|
|
|
1.91 |
|
|
$ |
61.20 |
|
|
|
6,000 |
|
|
$ |
61.20 |
|
| $ |
36.00 |
|
|
|
667 |
|
|
|
1.75 |
|
|
$ |
36.00 |
|
|
|
667 |
|
|
$ |
36.00 |
|
| $ |
37.05 |
|
|
|
333 |
|
|
|
1.83 |
|
|
$ |
37.05 |
|
|
|
333 |
|
|
$ |
37.05 |
|
| $ |
15.75 |
|
|
|
333 |
|
|
|
1.97 |
|
|
$ |
15.70 |
|
|
|
333 |
|
|
$ |
15.70 |
|
| $ |
10.05 |
|
|
|
6,000 |
|
|
|
2.50 |
|
|
$ |
10.05 |
|
|
|
5,000 |
|
|
$ |
10.05 |
|
| $ |
26.55 |
|
|
|
667 |
|
|
|
2.25 |
|
|
$ |
26.55 |
|
|
|
667 |
|
|
$ |
26.55 |
|
| $ |
16.20 |
|
|
|
333 |
|
|
|
2.33 |
|
|
$ |
16.20 |
|
|
|
333 |
|
|
$ |
16.20 |
|
| $ |
3.19 |
|
|
|
334 |
|
|
|
2.47 |
|
|
$ |
3.19 |
|
|
|
334 |
|
|
$ |
3.19 |
|
| |
Total |
|
|
|
42,667 |
|
|
|
1.28 |
|
|
$ |
78.04 |
|
|
|
41,667 |
|
|
$ |
79.67 |
|
|
| Warrant activity |
| Warrant activity |
|
|
|
|
|
|
| |
|
Warrants |
|
|
Weighted Average Exercise Price Per Share
|
|
| Outstanding, April 30, 2021 |
|
|
2,981 |
|
|
$ |
58.70 |
|
| Issued |
|
|
18,815,242 |
|
|
|
3.19 |
|
| Exercised |
|
|
(8,041,414 |
) |
|
|
1.33 |
|
| Expired |
|
|
– |
|
|
|
– |
|
| Outstanding, October 31, 2021 |
|
|
10,773,828 |
|
|
|
– |
|
| Exercisable, October 31, 2021 |
|
|
10,773,828 |
|
|
$ |
4.60 |
|
|
| Schedule of warrants outstanding and exercisable |
| Schedule of warrants outstanding and exercisable |
|
|
|
|
|
|
|
|
|
| Exercise Prices |
|
Number of
Warrant Shares
Exercisable at
October 31, 2021 |
|
|
Weighted
Average
Remaining
Contractual
Life Years |
|
|
Weighted
Average
Exercise Price
Per Share |
|
| |
|
|
|
|
|
|
|
|
|
| $97.50 |
|
|
513 |
|
|
|
0.13 |
|
|
|
|
|
| $86.25 |
|
|
580 |
|
|
|
0.42 |
|
|
|
|
|
| $37.50 |
|
|
1,333 |
|
|
|
0.73 |
|
|
|
|
|
| $45.00 |
|
|
555 |
|
|
|
0.56 |
|
|
|
|
|
| $4.2500 |
|
|
1,506,141 |
|
|
|
4.78 |
|
|
|
|
|
| $5.3125 |
|
|
264,706 |
|
|
|
4.78 |
|
|
|
|
|
| $5.0000 |
|
|
7,000,000 |
|
|
|
4.82 |
|
|
|
|
|
| $6.2500 |
|
|
1,050,000 |
|
|
|
4.80 |
|
|
|
|
|
| $0.0010 |
|
|
950,000 |
|
|
|
– |
|
|
|
|
|
| |
|
|
10,773,828 |
|
|
|
4.81 |
|
|
$ |
4.60 |
|
|