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Equity Incentive Plans (Tables) | 9 Months Ended
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Sep. 30, 2019
Equity Incentive Plans [Abstract] |
Assumptions used in the black-Scholes model | The assumptions used in the Black-Scholes model are presented below:
|  | Nine Months Ended September 30, |
|  | 2019 |  | 2018 |
Risk-free interest rate |  | 1.71 to 2.23 | % | - | %
Expected volatility |  | 89.26 to 90.43 | % | - | %
Expected term (in years) |  | 5.75 to 6.25 |  | - |
Expected dividend yield |  | 0 | % | - | %
Allocation of Stock-Based Compensation Expenses | The tables below summarize the total stock-based compensation expense included in the Company’s consolidated statements of operations for the periods presented:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |
|  | 2019 |  | 2018 |  | 2019 |  | 2018 |
Research and development |  | $ | 358,000 |  | $ | 1,000 |  | $ | 609,000 |  | $ | 8,000 |
General and administrative |  |  | 2,140,000 |  |  | 7,000 |  |  | 2,615,000 |  |  | 39,000 |
Total stock-based compensation |  | $ | 2,498,000 |  | $ | 8,000 |  | $ | 3,224,000 |  | $ | 47,000 |
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Expense related to RSA's issued prior to Merger and vesting beginning on Merger closing date |  | $ | 892,000 |  | $ | - |  | $ | 1,468,000 |  | $ | -
Acceleration of RSA expense in connection with executive severance |  |  | 1,244,000 |  |  | - |  |  | 1,244,000 |  |  | -
Expense related to vesting of stock options issued under the Company's stock plans |  |  | 362,000 |  |  | 8,000 |  |  | 512,000 |  |  | 47,000
Total stock based compensation expense |  | $ | 2,498,000 |  | $ | 8,000 |  | $ | 3,224,000 |  | $ | 47,000
Summary of Stock Option Activity | Stock option transactions during the nine months ended September 30, 2019 are presented below:
|  |  |  |  |  |  | Weighted |  |  |
|  |  |  |  |  |  | Average |  |  |
|  |  |  | Weighted |  | Remaining |  |  |
|  |  |  | Average |  | Contractual |  | Aggregate
|  |  |  | Exercise |  | Term |  | Intrinsic
|  | Shares |  | Price |  | (Years) |  | Value
Outstanding at December 31, 2018 |  | 136,463 |  | $ | 36.31 |  | 5.02 |  |  | —
Assumed in the Merger |  | 52,602 |  |  | 56.60 |  |  |  |  | —
Granted |  | 1,179,825 |  |  | 3.17 |  |  |  |  | 1,549,000
Forfeited/Cancelled |  | (57,394) |  |  | 13.16 |  |  |  |  | —
Outstanding at September 30, 2019 |  | 1,311,496 |  | $ | 8.32 |  | 9.04 |  |  | 1,507,000
Vested and expected to vest at September 30, 2019 |  | 1,311,496 |  | $ | 8.32 |  | 9.04 |  | $ | 1,507,000
Exercisable at September 30, 2019 |  | 156,858 |  | $ | 44.52 |  | 4.66 |  | $ | —
Schedule of restricted stock awards | Restricted stock award transactions under the Assumed 2016 Plan during the nine months ended September 30, 2019 are presented below:
|  |  |  |  | Weighted Avg
|  |  |  |  | Grant Date
|  | Shares |  | Fair Value
Outstanding at December 31, 2018 |  |  | 416,856 |  | $ | 29.17
Granted |  |  | — |  |  | —
Forfeited/Cancelled |  |  | (32,714) |  |  | -
Issued as Common Stock |  |  | (29,108) |  |  | -
Outstanding at September 30, 2019 |  |  | 355,034 |  | $ | 29.25
Shares Reserved for Future Issuance | As of September 30, 2019, the Company had reserved shares of its common stock for future issuance as follows:
|  | Shares Reserved
Stock options outstanding |  | 1,311,496
Employee stock purchase plan |  | 5,462
Available for future grants under the 2016 Plan |  | 38,974
Warrants outstanding |  | 1,854,262
Total shares reserved |  | 3,210,194

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- Definition The number of shares under options that were assumed in merger during the reporting period pertaining to the stock option plan. + References No definition available. + Details
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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 + Details
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