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Stock-Based Compensation (Tables) | 12 Months Ended
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Sep. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of share-based compensation expense |
|  | 2019 |  |  | 2018 |
General and administrative |  | $ | 357,318 |  |  | $ | 480,653 |
Research and development |  |  | 134,431 |  |  |  | 5,467 |
Total stock-based compensation expense |  | $ | 491,749 |  |  | $ | 486,120 |
Schedule of stock option plan activity |
|  |  |  |  |  |  |  | Weighted- |  |  |  |
|  |  |  |  | Weighted |  |  | Average |  |  |  |
|  |  |  |  | Average |  |  | Remaining |  |  | Aggregate |
|  | Number of |  |  | Exercise |  |  | Contractual |  |  | Intrinsic |
|  | Options |  |  | Price |  |  | Term (years) |  |  | Value(1) |
Outstanding at December 31, 2017 |  |  | 365,716 |  |  | $ | 0.03 |  |  |  | 9.3 |  |  | $ | 908,920 |
Granted |  |  | 2,500 |  |  | $ | 5.34 |  |  |  | — |  |  |  |  |
Exercised |  |  | — |  |  | $ | — |  |  |  | — |  |  |  |  |
Forfeited/Cancelled |  |  | — |  |  | $ | — |  |  |  | — |  |  |  |  |
Outstanding at September 30, 2018 |  |  | 368,216 |  |  | $ | 0.07 |  |  |  | 8.6 |  |  | $ | 820,862 |
Granted |  |  | 675,667 |  |  | $ | 2.32 |  |  |  | — |  |  |  |  |
Exercised |  |  | (198,043 | ) |  | $ | 0.27 |  |  |  | — |  |  |  |  |
Forfeited/Cancelled |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |
Outstanding at September 30, 2019 |  |  | 845,840 |  |  | $ | 1.82 |  |  |  | 9.0 |  |  | $ | 343,406 |
Vested and exercisable at September 30, 2019 |  |  | 458,311 |  |  | $ | 1.42 |  |  |  | 8.7 |  |  | $ | 343,406 |
| (1) | The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the estimated fair value of our common stock as of September 30, 2019 and 2018 of $1.87 and $2.30 per share, respectively. As of September 30, 2019, 658,730 and 271,201 outstanding and vested options, respectively, have no intrinsic value.
Schedule of weighted-average assumptions used Black-Scholes option-pricing model |
|  | 2019 |  |  | 2018 |
Expected stock price volatility |  |  | 50.4 | % |  |  | 49.8 | %
Expected life of options (years) |  |  | 5.6 |  |  |  | 5.0 |
Expected dividend yield |  |  | 0 | % |  |  | 0 | %
Risk free interest rate |  |  | 2.4 | % |  |  | 2.8 | %

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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