| Schedule of Share-based Payment Arrangement Activity |
The following table summarizes option activity for directors, officers, consultants and employees:
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Outstanding Stock Options |
|
|
|
|
|
|
|
Options Available for Grant |
|
Number of Options Outstanding |
|
Weighted
Average
Exercise Price
per Option |
|
Weighted
Average Grant
Date Fair Value
per Option |
|
Weighted
Average
Remaining
Exercise Term
in Months |
| Balance, December 31, 2017 |
4,145,774 |
|
|
3,851,371 |
|
|
$ |
3.11 |
|
|
$ |
1.84 |
|
|
43 |
| Granted |
(340,000) |
|
|
340,000 |
|
|
1.18 |
|
|
0.54 |
|
|
56 |
| Exercised |
— |
|
|
(52,500) |
|
|
1.24 |
|
|
0.68 |
|
|
— |
|
|
|
|
|
|
|
|
|
|
|
| Forfeited and expired |
— |
|
|
(271,250) |
|
|
3.22 |
|
|
1.58 |
|
|
— |
|
| Balance, December 31, 2018 |
3,805,774 |
|
|
3,867,621 |
|
|
4.05 |
|
|
1.84 |
|
|
64 |
| Additional Shares Authorized under 2019 Plan |
8,000,000 |
|
|
— |
|
|
|
|
|
|
|
| Granted |
(2,400,000) |
|
|
2,400,000 |
|
|
0.96 |
|
|
0.53 |
|
|
81 |
| Exercised |
— |
|
|
(497,552) |
|
|
0.12 |
|
|
0.97 |
|
|
— |
|
|
|
|
|
|
|
|
|
|
|
| Forfeited and expired |
1,774,069 |
|
|
(1,774,069) |
|
|
4.85 |
|
1.97 |
|
— |
|
| Balance, September 30, 2019 |
11,179,843 |
|
|
3,996,000 |
|
|
$ |
2.33 |
|
|
$ |
1.12 |
|
|
66 |
|