| Schedule of assumptions |
The fair value of the warrants listed above was determined using the
Black-Scholes option pricing model with the following assumptions:
| |
|
March 31, |
|
|
March 31, |
|
| |
|
2021 |
|
|
2020 |
|
| Risk-free interest rate |
|
|
0.93% |
|
|
|
1.71% |
|
| Expected life of the options |
|
|
10 years |
|
|
|
10 years |
|
| Expected volatility |
|
|
122.93% |
|
|
|
158.86% |
|
| Expected dividend yield |
|
|
0% |
|
|
|
0% |
|
|
The fair value of the warrants listed above was determined using
the Black-Scholes option pricing model with the following assumptions:
| |
|
December 31, |
|
|
December 31, |
|
| |
|
2020 |
|
|
2019 |
|
| Risk-free interest rate |
|
|
1.71% |
|
|
|
1.71% |
|
| Expected life of the options |
|
|
10 years |
|
|
|
10 years |
|
| Expected volatility |
|
|
158.86% |
|
|
|
158.86% |
|
| Expected dividend yield |
|
|
0% |
|
|
|
0% |
|
|
| Schedule of option activity |
The following is a summary of options activity
from December 31, 2020 to March 31, 2021:
| Options |
|
Shares |
|
|
Weighted average exercise price |
|
|
Weighted Average Remaining Contractual Life |
|
|
Aggregate Intrinsic Value |
|
| Outstanding at December 31, 2020 |
|
|
210,000 |
|
|
$ |
9.61 |
|
|
|
9.61 |
|
|
|
– |
|
| Granted |
|
|
105,000 |
|
|
|
1.00 |
|
|
|
– |
|
|
|
– |
|
| Exercised |
|
|
– |
|
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Forfeited or expired |
|
|
– |
|
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Outstanding at March 31, 2021 |
|
|
315,000 |
|
|
$ |
4.80 |
|
|
|
8.83 |
|
|
|
131,250 |
|
| Vested as of March 31, 2021 |
|
|
236,250 |
|
|
$ |
5.40 |
|
|
|
8.51 |
|
|
|
32,813 |
|
| Exercisable at March 31, 2021 |
|
|
315,000 |
|
|
$ |
5.40 |
|
|
|
8.51 |
|
|
|
32,813 |
|
|
The following is a summary of options activity
from December 31, 2019 to December 31, 2020:
| Options |
|
Shares |
|
|
Weighted average exercise price |
|
|
Weighted Average Remaining Contractual Life |
|
|
Aggregate Intrinsic Value |
|
| Outstanding at December 31, 2019 |
|
|
210,000 |
|
|
$ |
9.61 |
|
|
|
9.61 |
|
|
|
– |
|
| Granted |
|
|
– |
|
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Exercised |
|
|
– |
|
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Forfeited or expired |
|
|
– |
|
|
|
– |
|
|
|
– |
|
|
|
– |
|
| Outstanding at December 31, 2020 |
|
|
210,000 |
|
|
$ |
9.61 |
|
|
|
9.61 |
|
|
|
– |
|
| Vested as of December 31, 2020 |
|
|
210,000 |
|
|
|
5.70 |
|
|
|
9.61 |
|
|
|
– |
|
| Exercisable at December 31, 2020 |
|
|
210,000 |
|
|
$ |
9.61 |
|
|
|
9.61 |
|
|
|
– |
|
|
| Schedule of options by exercise price |
The exercise price for options outstanding and
exercisable at March 31, 2021:
| Outstanding |
|
|
Exercisable |
|
| |
|
|
|
|
|
|
|
|
|
|
| Number of |
|
|
|
Exercise |
|
|
Number of |
|
|
|
Exercise |
|
| Options |
|
|
|
Price |
|
|
Options |
|
|
|
Price |
|
| 30,000 |
|
|
$ |
5.70 |
|
|
30,000 |
|
|
$ |
5.70 |
|
| 30,000 |
|
|
|
5.70 |
|
|
30,000 |
|
|
|
5.70 |
|
| 30,000 |
|
|
|
5.70 |
|
|
30,000 |
|
|
|
5.70 |
|
| 30,000 |
|
|
|
5.70 |
|
|
30,000 |
|
|
|
5.70 |
|
| 30,000 |
|
|
|
5.70 |
|
|
30,000 |
|
|
|
5.70 |
|
| 30,000 |
|
|
|
5.70 |
|
|
30,000 |
|
|
|
5.70 |
|
| 30,000 |
|
|
|
5.70 |
|
|
30,000 |
|
|
|
5.70 |
|
| 15,000 |
|
|
|
3.00 |
|
|
15,000 |
|
|
|
3.00 |
|
| 15,000 |
|
|
|
3.00 |
|
|
15,000 |
|
|
|
3.00 |
|
| 15,000 |
|
|
|
3.00 |
|
|
15,000 |
|
|
|
3.00 |
|
| 15,000 |
|
|
|
3.00 |
|
|
15,000 |
|
|
|
3.00 |
|
| 15,000 |
|
|
|
3.00 |
|
|
15,000 |
|
|
|
3.00 |
|
| 15,000 |
|
|
|
3.00 |
|
|
15,000 |
|
|
|
3.00 |
|
| 15,000 |
|
|
|
3.00 |
|
|
15,000 |
|
|
|
3.00 |
|
| 315,000 |
|
|
|
|
|
|
315,000 |
|
|
|
|
|
|
The exercise price for options outstanding
and exercisable at December 31, 2020:
| Outstanding |
|
|
Exercisable |
|
| |
|
|
|
|
|
|
|
|
|
|
| |
Number of |
|
|
|
Exercise |
|
|
|
Number of |
|
|
|
Exercise |
|
| |
Options |
|
|
|
Price |
|
|
|
Options |
|
|
|
Price |
|
| |
30,000 |
|
|
$ |
5.70 |
|
|
|
30,000 |
|
|
$ |
5.70 |
|
| |
30,000 |
|
|
|
5.70 |
|
|
|
30,000 |
|
|
|
5.70 |
|
| |
30,000 |
|
|
|
5.70 |
|
|
|
30,000 |
|
|
|
5.70 |
|
| |
30,000 |
|
|
|
5.70 |
|
|
|
30,000 |
|
|
|
5.70 |
|
| |
30,000 |
|
|
|
5.70 |
|
|
|
30,000 |
|
|
|
5.70 |
|
| |
30,000 |
|
|
|
5.70 |
|
|
|
30,000 |
|
|
|
5.70 |
|
| |
30,000 |
|
|
|
5.70 |
|
|
|
30,000 |
|
|
|
5.70 |
|
| |
210,000 |
|
|
|
|
|
|
|
210,000 |
|
|
|
|
|
|