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Stock-based Compensation | 3 Months Ended
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Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock-based Compensation |
8. | Stock-based Compensation
Pursuant to the terms of the Company’s 2014 Equity Incentive Plan (“2014 Plan”), on January 1, 2021 and 2020, the Company automatically added 786,547 and 389,650 shares to the total number shares of common stock available for future issuance under the 2014 Plan, respectively. As of March 31, 2021, there were 318,097 shares of common stock available for future issuance under the 2014 Plan. As of March 31, 2021, there were 14,050 shares of common stock available for future issuance under the Company’s 2015 Inducement Award Plan (“2015 Plan”). During the three months ended March 31, 2021 and 2020, there were zero and 17,500 granted options of the Company’s common stock under the 2015 Plan, respectively. On April 30, 2021, the Company’s board of directors amended the 2015 Plan, and the share reserve for the 2015 Plan was increased from 90,000 to 500,000 shares of common stock. The activity for the Company’s 2009 Stock Option Plan, 2014 Plan, and 2015 Plan, for the three months ended March 31, 2021, is summarized as follows:
|  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life (in years) |  |  | Aggregate Intrinsic Value ($000) |
Outstanding — December 31, 2020 |  |  | 830,343 |  |  | $ | 21.52 |  |  |  | 7.71 |  |  | $ | 96 |
Granted |  |  | 545,450 |  |  | $ | 7.57 |  |  |  |  |  |  |  |  |
Forfeited/Cancelled |  |  | (4,187 | ) |  | $ | 8.48 |  |  |  |  |  |  |  |  |
Outstanding — March 31, 2021 |  |  | 1,371,606 |  |  | $ | 16.01 |  |  |  | 8.33 |  |  | $ | 355 |
Exercisable — March 31, 2021 |  |  | 500,625 |  |  | $ | 29.27 |  |  |  | 6.72 |  |  | $ | 37 |
Vested or expected to vest — March 31, 2021 |  |  | 1,371,606 |  |  | $ | 16.01 |  |  |  | 8.33 |  |  | $ | 355 |
Restricted stock unit (“RSU”) activity under the 2014 Plan and 2015 Plan for the three months ended March 31, 2021, is summarized as follows:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value Per Share |
Non-vested at December 31, 2020 |  |  | 29,087 |  |  | $ | 9.52 |
Granted |  |  | 73,675 |  |  | $ | 7.55 |
Vested |  |  | (5,788 | ) |  | $ | 10.68 |
Non-vested at March 31, 2021 |  |  | 96,974 |  |  | $ | 7.95 |
The fair value of RSUs is based on the market price of the Company’s common stock on the date of grant. RSUs generally vest 25% annually over a four-year period from the date of grant. Upon vesting, the RSUs are net share settled to cover the required withholding tax with the remaining shares issued to the holder. The Company recognizes compensation expense for such awards ratably over the corresponding vesting period. Compensation Cost The compensation cost that has been charged against income for stock awards under the 2014 Plan and the 2015 Plan was $0.4 million for both the three months ended March 31, 2021 and 2020. The total income tax benefit recognized in the statements of operations for share-based compensation arrangements was zero for each of the three months ended March 31, 2021 and 2020. Stock-based compensation expense related to stock options is included in the following line items in the accompanying unaudited condensed consolidated statements of operations (in thousands):
|  | Three Months Ended March 31, |
|  | 2021 |  |  | 2020 |
Research and development |  | $ | 126 |  |  | $ | 136 |
Selling, general and administrative |  |  | 272 |  |  |  | 274 |
Total |  | $ | 398 |  |  | $ | 410 |

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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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