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Stockholders' Equity (Tables) | 9 Months Ended
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Sep. 30, 2020
Equity [Abstract] |
Schedule of Warrant Activity | The following table shows the warrant activity:
| Rollforward of Warrant Activity |
|  | Warrants assumed and replaced in acquisition |  |  | Total |
Balance as of December 31, 2019 |  |  | — |  |  |  | — |
Assumed and replaced |  |  | 55,583.875 |  |  |  | 55,583.875 |
Exercised |  |  | — |  |  |  | — |
Cancelled/Expired |  |  | — |  |  |  | — |
Balance as of September 30, 2020 |  |  | 55,583.875 |  |  |  | 55,583.875 |
Schedule of Stock-Based Compensation Expense Recognized | Total stock-based compensation expense was recognized in our condensed consolidated statements of operations and comprehensive loss as follows (in thousands):
|  | For the Three Months Ended September 30, |  |  | For the Nine Months Ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Research and development |  | $ | 336 |  |  | $ | 57 |  |  | $ | 539 |  |  | $ | 278 |
General and administrative |  |  | 542 |  |  |  | 170 |  |  |  | 973 |  |  |  | 787 |
Total stock-based compensation |  | $ | 878 |  |  | $ | 227 |  |  | $ | 1,512 |  |  | $ | 1,065 |
Below is the summary of the stock-based compensation expenses the Company incurred for three and nine months ended September 30, 2020:
|  | For the Three Months Ended September 30, | For the Nine Months Ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Amortization of outstanding equity-based awards |  | $ | 93 |  |  | $ | 227 |  |  | $ | 727 |  |  | $ | 1,065 |
Modifications of terms related to grants previously issued to employees and board of directors |  |  | 471 |  |  |  | — |  |  |  | 471 |  |  |  | — |
Amortization of equity-based awards assumed from the merger with Anelixis and replaced |  |  | 38 |  |  |  | — |  |  |  | 38 |  |  |  | — |
New grants of preferred equity-based awards to directors and employees |  |  | 276 |  |  |  | — |  |  |  | 276 |  |  |  | — |
Total stock-based compensation expense |  | $ | 878 |  |  | $ | 227 |  |  | $ | 1,512 |  |  | $ | 1,065 |

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