| Schedule of Stock Based Compensation Activity |
The following table summarizes stock-based compensation expense:
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Three Months Ended September 30, |
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Nine Months Ended September 30, |
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2021 |
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2020 |
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2021 |
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2020 |
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| Stock options |
$ |
181,558 |
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$ |
302,806 |
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|
$ |
273,180 |
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$ |
730,564 |
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| Restricted stock |
1,039,647 |
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|
435,710 |
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2,980,366 |
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|
2,037,170 |
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| Total stock-based compensation |
$ |
1,221,205 |
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$ |
738,516 |
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$ |
3,253,546 |
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$ |
2,767,734 |
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The following table summarizes restricted stock activity:
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Number of Unvested Shares |
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Weighted Average Grant Date Fair Value per Share |
| Balance, December 31, 2020 |
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1,377,889 |
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$ |
2.70 |
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| Granted |
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1,099,164 |
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11.71 |
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| Vested |
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(810,586) |
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3.76 |
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| Forfeited |
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(482,212) |
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5.05 |
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| Balance, September 30, 2021 |
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1,184,255 |
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$ |
8.90 |
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| Schedule of Stock Option Activity |
The following table summarizes option activity:
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Number of Options |
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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
Contractual Life
(Years) |
| Balance, December 31, 2020 |
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2,351,240 |
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$ |
2.00 |
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5.5 |
| Granted |
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523,713 |
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11.32 |
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5.73 |
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| Exercised |
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(884,954) |
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|
3.20 |
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| Forfeited |
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(170,000) |
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0.94 |
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| Expired |
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(56,000) |
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|
6.13 |
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| Balance, September 30, 2021 |
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1,763,999 |
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$ |
4.14 |
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5.3 |
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| Number of options exercisable at September 30, 2021 |
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1,178,411 |
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$ |
1.07 |
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0.5 |
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