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Share-based Compensation | 6 Months Ended
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Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Share-based Compensation | (8) Share-based Compensation For the three and six month periods ended June 30, 2021 and 2020, the Company recognized the following non-cash, share-based compensation expense in the statements of operations (in thousands):
| Three Months Ended June 30, |  |  | Six Months Ended June 30, |
| 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Research and development | $ | 38 |  |  | $ | 4 |  |  | $ | 74 |  |  | $ | 13 |
General and administrative |  | 95 |  |  |  | — |  |  |  | 200 |  |  |  | 7 |
Total | $ | 133 |  |  | $ | 4 |  |  | $ | 274 |  |  | $ | 20 |
Stock option transactions for the six month period ended June 30, 2021 under the Company’s stock incentive plans were as follows:
| Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (in years) |
Options outstanding at December 31, 2020 |  | 531,238 |  |  | $ | 8.71 |  |  |  | 9.68 |
Granted |  | 147,200 |  |  |  | 3.63 |  |  |  |  |
Exercised | — |  |  | — |  |  |  |  |
Forfeited and cancelled |  | (53,537 | ) |  |  | 10.84 |  |  |  |  |
Options outstanding at June 30, 2021 |  | 624,901 |  |  | $ | 7.33 |  |  |  | 9.23 |
Options exercisable at June 30, 2021 |  | 100,180 |  |  | $ | 24.37 |  |  |  | 7.58 |
Options vested and expected to vest |  | 624,293 |  |  | $ | 7.33 |  |  |  | 9.23 |

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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- References No definition available. + Details
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