Stockholders' Equity (Tables)
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9 Months Ended |
Sep. 30, 2020 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Schedule of summarizes stock option activities |
The following table summarizes stock option activities for the nine months ended September 30, 2020:
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Weighted Average |
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Remaining |
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Weighted Average |
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Contractual Life (in |
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|
Stock Options |
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Exercise Price |
|
years) |
Outstanding at December 31, 2019 |
|
1,241,675 |
|
$ |
5.73 |
|
7.31 |
Options forfeited |
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(100,000) |
|
|
5.73 |
|
— |
Outstanding at September 30, 2020 |
|
1,141,675 |
|
|
5.73 |
|
6.56 |
Options vested and exercisable at September 30, 2020 |
|
606,514 |
|
$ |
5.73 |
|
6.56 |
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| Schedule of stock-based compensation expense |
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For the three months ended September 30, |
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For the nine months ended September 30, |
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2020 |
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2019 |
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2020 |
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2019 |
General and administrative |
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$ |
348 |
|
$ |
389 |
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$ |
1,213 |
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$ |
1,058 |
Research and development |
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|
258 |
|
|
731 |
|
|
1,155 |
|
|
1,116 |
Total stock-based compensation expense |
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$ |
606 |
|
$ |
1,120 |
|
$ |
2,368 |
|
$ |
2,174 |
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| Schedule of warrant activity |
A summary of warrant activities for nine months ended September 30, 2020 is presented below:
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Weighted Average |
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Remaining |
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Weighted Average |
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Contractual Life (in |
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|
Warrants |
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Exercise Price |
|
years) |
Outstanding as of December 31, 2019 |
|
5,405,669 |
|
$ |
8.20 |
|
2.40 |
Cashless exercised |
|
(2,999) |
|
|
— |
|
— |
Outstanding as of December 31, 2020 |
|
5,402,670 |
|
$ |
8.21 |
|
1.64 |
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| Unvested Restricted Stock Awards [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Schedules of restricted stock and restricted stock unit activity |
The following table summarizes restricted stock award activities for the nine months ended September 30, 2020:
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Weighted Average |
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Grant Date Fair |
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Number of Shares |
|
Value |
Nonvested at December 31, 2019 |
|
299,060 |
|
$ |
5.66 |
Granted |
|
83,055 |
|
|
3.08 |
Vested |
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(80,001) |
|
|
5.73 |
Nonvested at September 30, 2020 |
|
302,114 |
|
$ |
4.93 |
|
| Unvested Restricted Stock Units [Member] |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
| Schedules of restricted stock and restricted stock unit activity |
Certain employees and consultants have been awarded restricted stock units with time-based vesting. The following table summarizes restricted stock units’ activities for the nine months ended September 30, 2020:
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Weighted Average |
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Grant Date Fair |
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Number of Units |
|
Value |
Nonvested at December 31, 2019 |
|
1,112,417 |
|
$ |
5.11 |
Granted |
|
809,000 |
|
|
2.94 |
Forfeited |
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(129,000) |
|
|
4.47 |
Vested |
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(292,107) |
|
|
4.94 |
Nonvested at December 31, 2020 |
|
1,500,310 |
|
$ |
4.03 |
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