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