8. Stock Options and Warrants (Tables)
|
12 Months Ended |
Dec. 31, 2018 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |
|
Stock option activity |
|
|
Options |
|
|
Weighted Avg. Exercise Price
|
|
Options outstanding, January 1, 2017 |
|
|
23,474,256 |
|
|
$ |
0.30 |
|
Options granted |
|
|
12,561,852 |
|
|
|
0.12 |
|
Options exercised |
|
|
(449,754 |
) |
|
|
0.05 |
|
Options cancelled |
|
|
(188,679 |
) |
|
|
0.53 |
|
Options outstanding, December 31, 2017 |
|
|
35,397,675 |
|
|
$ |
0.23 |
|
Options granted |
|
|
2,083,335 |
|
|
|
0.18 |
|
Options exercised |
|
|
(179,710 |
) |
|
|
0.07 |
|
Options cancelled |
|
|
(2,000,000 |
) |
|
|
0.28 |
|
Options outstanding, December 31, 2018 |
|
|
35,301,300 |
|
|
|
0.22 |
|
|
Options outstanding by Per Share Price |
|
|
|
|
Outstanding Options |
|
|
|
Exercisable Options |
|
|
Option Exercise Price Per Share
|
|
|
|
Shares |
|
|
|
Life (Years)
|
|
|
|
Weighted Average Exercise Price
|
|
|
|
Shares |
|
|
|
Weighted Average Exercise Price
|
|
|
$ 0.05 - $ 0.24 |
|
|
|
13,766,250 |
|
|
|
8.1 |
|
|
$ |
0.10 |
|
|
|
13,466,250 |
|
|
$ |
0.10 |
|
|
$ 0.25 - $ 0.49 |
|
|
|
20,913,552 |
|
|
|
3.3 |
|
|
|
0.27 |
|
|
|
18,913,552 |
|
|
|
0.27 |
|
|
$ 0.50 - $ 0.99 |
|
|
|
471,052 |
|
|
|
5.3 |
|
|
|
0.85 |
|
|
|
471,052 |
|
|
|
0.85 |
|
|
$ 1.00 - $ 2.00 |
|
|
|
150,446 |
|
|
|
4.6 |
|
|
|
1.18 |
|
|
|
150,446 |
|
|
|
1.18 |
|
|
|
|
|
|
35,301,300 |
|
|
|
5.2 |
|
|
$ |
0.22 |
|
|
|
33,001,300 |
|
|
$ |
0.21 |
|
|
Assumptions used for option valuation |
|
|
Years Ended |
|
|
|
2018 |
|
|
2017 |
|
Expected life (years) |
|
|
5.5 |
|
|
|
5 – 6 |
|
Risk free interest rate |
|
|
1.70% |
|
|
|
1.72 – 1.94% |
|
Volatility |
|
|
118% |
|
|
|
114 – 124% |
|
Expected dividend yield |
|
|
0% |
|
|
|
0% |
|
|
Warrant activity |
|
|
Warrants |
|
|
Weighted Avg. Exercise Price
|
|
Warrants outstanding, January 1, 2017 |
|
|
11,446,892 |
|
|
|
0.15 |
|
Warrants granted |
|
|
16,160,770 |
|
|
|
0.05 |
|
Warrants exercised |
|
|
(4,414,000 |
) |
|
|
0.08 |
|
Warrants cancelled |
|
|
(5,571,225 |
) |
|
|
0.10 |
|
Warrants outstanding, December 31, 2017 |
|
|
17,622,437 |
|
|
$ |
0.09 |
|
Warrants granted |
|
|
18,238,688 |
|
|
|
0.05 |
|
Warrants exercised |
|
|
(12,517,773 |
) |
|
|
0.05 |
|
Warrants cancelled |
|
|
(2,287,997 |
) |
|
|
0.05 |
|
Warrants outstanding, December 31, 2018 |
|
|
21,055,355 |
|
|
|
0.09 |
|
|
Warrants outstanding by Per Share Price |
|
|
|
|
|
Outstanding Warrants |
|
|
|
Exercisable Warrants |
|
|
Warrant
Exercise Price
Per Share
|
|
|
|
Shares |
|
|
|
Life
(Years)
|
|
|
|
Weighted
Average Exercise
Price
|
|
|
|
Shares |
|
|
|
Weighted
Average Exercise
Price
|
|
|
$ 0.05 - $ 0.24 |
|
|
|
18,343,688
|
|
|
|
0.9 |
|
|
$ |
0.06 |
|
|
|
18,343,688 |
|
|
$ |
0.06 |
|
|
$ 0.25 - $ 0.49 |
|
|
|
2,641,667 |
|
|
|
2.2 |
|
|
|
0.30 |
|
|
|
2,641,667 |
|
|
|
0.30 |
|
|
$ 0.50 - $ 1.00 |
|
|
|
70,000 |
|
|
|
5.3 |
|
|
|
0.80 |
|
|
|
70,000 |
|
|
|
0.80 |
|
|
|
|
|
|
21,055,355 |
|
|
|
1.1 |
|
|
$ |
0.09 |
|
|
|
21,055,355 |
|
|
$ |
0.09 |
|
|