STOCK OPTIONS AND WARRANTS (Tables)
|
9 Months Ended |
Jan. 31, 2022 |
| Share-based Payment Arrangement [Abstract] |
|
| Assumptions for options |
| Assumptions for options |
|
|
|
|
| |
|
Nine Months Ended January 31, |
| |
|
2022 |
|
2021 |
| Risk-free interest rate |
|
|
1.06% |
|
|
|
0.35% |
|
| Expected volatility |
|
|
129% |
|
|
|
97% |
|
| Expected term (years) |
|
|
2.7 |
|
|
|
2.7 |
|
| 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 |
|
|
7,334 |
|
|
|
5.34 |
|
|
|
5.34 |
|
| Forfeited |
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Exercised |
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Outstanding, January 31, 2022 |
|
|
48,667 |
|
|
$ |
68.73 |
|
|
$ |
68.73 |
|
| Exercisable, January 31, 2022 |
|
|
43,167 |
|
|
$ |
78.76 |
|
|
$ |
– |
|
| Vested and expected to vest |
|
|
48,667 |
|
|
$ |
68.73 |
|
|
$ |
– |
|
|
| 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 |
|
|
7,334 |
|
|
|
5.34 |
|
| Vested |
|
|
(5,834 |
) |
|
|
– |
|
| Forfeited |
|
|
– |
|
|
|
– |
|
| Unvested, January 31, 2022 |
|
|
5,500 |
|
|
$ |
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 of Exercisable Options |
| $ |
156.00 |
|
|
|
6,967 |
|
|
|
0.07 |
|
|
$ |
156.00 |
|
|
|
6,967 |
|
|
$ |
156.00 |
|
| $ |
87.00 |
|
|
|
1,634 |
|
|
|
0.31 |
|
|
$ |
87.00 |
|
|
|
1,634 |
|
|
$ |
87.00 |
|
| $ |
110.10 |
|
|
|
800 |
|
|
|
0.25 |
|
|
$ |
110.10 |
|
|
|
800 |
|
|
$ |
110.10 |
|
| $ |
109.35 |
|
|
|
1,200 |
|
|
|
0.44 |
|
|
$ |
109.35 |
|
|
|
1,200 |
|
|
$ |
109.35 |
|
| $ |
133.50 |
|
|
|
800 |
|
|
|
0.46 |
|
|
$ |
133.50 |
|
|
|
800 |
|
|
$ |
133.50 |
|
| $ |
82.95 |
|
|
|
333 |
|
|
|
0.34 |
|
|
$ |
82.95 |
|
|
|
333 |
|
|
$ |
82.95 |
|
| $ |
83.70 |
|
|
|
6,000 |
|
|
|
0.55 |
|
|
$ |
83.70 |
|
|
|
6,000 |
|
|
$ |
83.70 |
|
| $ |
80.10 |
|
|
|
800 |
|
|
|
1.59 |
|
|
$ |
80.10 |
|
|
|
800 |
|
|
$ |
80.10 |
|
| $ |
80.85 |
|
|
|
667 |
|
|
|
0.62 |
|
|
$ |
80.85 |
|
|
|
667 |
|
|
$ |
80.85 |
|
| $ |
102.45 |
|
|
|
333 |
|
|
|
0.71 |
|
|
$ |
102.45 |
|
|
|
333 |
|
|
$ |
102.45 |
|
| $ |
97.35 |
|
|
|
333 |
|
|
|
0.84 |
|
|
$ |
97.35 |
|
|
|
333 |
|
|
$ |
97.35 |
|
| $ |
74.25 |
|
|
|
6,000 |
|
|
|
1.28 |
|
|
$ |
74.25 |
|
|
|
6,000 |
|
|
$ |
74.25 |
|
| $ |
57.00 |
|
|
|
800 |
|
|
|
2.65 |
|
|
$ |
57.00 |
|
|
|
800 |
|
|
$ |
57.00 |
|
| $ |
60.60 |
|
|
|
667 |
|
|
|
1.12 |
|
|
$ |
60.60 |
|
|
|
667 |
|
|
$ |
60.60 |
|
| $ |
55.50 |
|
|
|
333 |
|
|
|
1.21 |
|
|
$ |
55.50 |
|
|
|
333 |
|
|
$ |
55.50 |
|
| $ |
51.00 |
|
|
|
333 |
|
|
|
1.35 |
|
|
$ |
51.00 |
|
|
|
333 |
|
|
$ |
51.00 |
|
| $ |
61.20 |
|
|
|
6,000 |
|
|
|
1.75 |
|
|
$ |
61.20 |
|
|
|
6,000 |
|
|
$ |
61.20 |
|
| $ |
36.00 |
|
|
|
667 |
|
|
|
1.62 |
|
|
$ |
36.00 |
|
|
|
667 |
|
|
$ |
36.00 |
|
| $ |
37.05 |
|
|
|
333 |
|
|
|
1.71 |
|
|
$ |
37.05 |
|
|
|
333 |
|
|
$ |
37.05 |
|
| $ |
15.75 |
|
|
|
333 |
|
|
|
1.85 |
|
|
$ |
15.70 |
|
|
|
333 |
|
|
$ |
15.70 |
|
| $ |
10.05 |
|
|
|
6,000 |
|
|
|
2.35 |
|
|
$ |
10.05 |
|
|
|
6,000 |
|
|
$ |
10.05 |
|
| $ |
26.55 |
|
|
|
667 |
|
|
|
2.12 |
|
|
$ |
26.55 |
|
|
|
667 |
|
|
$ |
26.55 |
|
| $ |
16.20 |
|
|
|
333 |
|
|
|
2.21 |
|
|
$ |
16.20 |
|
|
|
333 |
|
|
$ |
16.20 |
|
| $ |
3.19 |
|
|
|
334 |
|
|
|
2.34 |
|
|
$ |
3.19 |
|
|
|
334 |
|
|
$ |
3.19 |
|
| $ |
2.50 |
|
|
|
6,000 |
|
|
|
2.95 |
|
|
$ |
2.50 |
|
|
|
500 |
|
|
$ |
2.50 |
|
| |
Total |
|
|
|
48,667 |
|
|
|
1.13 |
|
|
$ |
68.73 |
|
|
|
43,167 |
|
|
$ |
77.16 |
|
|
| Warrant activity |
| Warrant activity |
|
|
|
|
| |
|
Warrants |
|
Weighted Average Exercise Price Per Share
|
| Outstanding, April 30, 2021 |
|
|
2,981 |
|
|
$ |
58.70 |
|
| Issued |
|
|
18,812,261 |
|
|
|
3.19 |
|
| Exercised |
|
|
(8,041,414 |
) |
|
|
1.33 |
|
| Expired |
|
|
(513 |
) |
|
|
– |
|
| Outstanding, January 31, 2022 |
|
|
10,773,315 |
|
|
|
– |
|
| Exercisable, January 31, 2022 |
|
|
10,773,315 |
|
|
$ |
4.59 |
|
|
| Schedule of warrants outstanding and exercisable |
| Schedule of warrants outstanding and exercisable |
|
|
|
|
|
|
| Exercise Prices |
|
Number of Warrant Shares Exercisable at January 31, 2022 |
|
Weighted Average Remaining Contractual Life Years |
|
Weighted Average Exercise Price Per Share |
| |
|
|
|
|
|
|
| $86.25
|
|
580 |
|
0.17 |
|
|
|
|
| $37.50
|
|
1,333 |
|
0.48 |
|
|
|
|
| $45.00
|
|
555 |
|
0.31 |
|
|
|
|
| $4.2500
|
|
1,506,141 |
|
4.53 |
|
|
|
|
| $5.3125
|
|
264,706 |
|
4.52 |
|
|
|
|
| $5.0000
|
|
7,000,000 |
|
4.56 |
|
|
|
|
| $6.2500
|
|
1,050,000 |
|
4.55 |
|
|
|
|
| $0.0010
|
|
950,000 |
|
– |
|
|
|
|
| |
|
10,773,315 |
|
4.56 |
|
$ |
4.59 |
|
|