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Stock-Based Compensation (Tables) | 12 Months Ended
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Sep. 30, 2022
Share-Based Payment Arrangement [Abstract] |
Schedule of stock-based compensation expense |
|  | 2022 |  |  | 2021 |
Selling, general and administrative |  | $ | 780,818 |  |  | $ | 1,550,841 |
Research and development |  |  | 166,394 |  |  |  | 242,358 |
Total stock-based compensation expense |  | $ | 947,212 |  |  | $ | 1,793,199 |
Schedule of weighted-average assumptions used in the Black-Scholes option-pricing model |
|  | Number of Options |  |  | Weighted Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value(1) |
Outstanding at September 30, 2020 |  |  | 492,842 |  |  | $ | 6.13 |  |  |  | 8.8 |  |  | $ | 96,088 |
Granted |  |  | 703,117 |  |  | $ | 5.83 |  |  |  | — |  |  |  | — |
Exercised |  |  | (1,538 | ) |  | $ | 6.60 |  |  |  | — |  |  |  | — |
Forfeited/Cancelled |  |  | (71,861 | ) |  | $ | 6.85 |  |  |  | — |  |  |  | — |
Outstanding at September 30, 2021 |  |  | 1,122,560 |  |  | $ | 5.89 |  |  |  | 8.8 |  |  | $ | 127,339 |
Granted |  |  | 152,690 |  |  | $ | 1.50 |  |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  | $ | — |  |  |  | — |  |  |  | — |
Forfeited/Cancelled |  |  | (35,335 | ) |  | $ | 4.14 |  |  |  | — |  |  |  | — |
Outstanding at September 30, 2022 |  |  | 1,239,915 |  |  | $ | 5.40 |  |  |  | 8.0 |  |  | $ | 89,295 |
Vested and expected to vest at September 30, 2022 |  |  | 1,239,915 |  |  | $ | 5.40 |  |  |  | 8.0 |  |  | $ | 89,295 |
Vested and exercisable at September 30, 2022 |  |  | 783,494 |  |  | $ | 5.76 |  |  |  | 7.7 |  |  | $ | 56,542 |
(1) | The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the fair value of our common stock as of September 30, 2022 and 2021 of $1.69 and $3.95 per share, respectively. As of September 30, 2022 and 2021, 1,125,710 and 1,055,376 outstanding options, respectively, had no intrinsic value.
Schedule of weighted-average assumptions used in the Black-Scholes option-pricing model |
|  | 2022 |  |  | 2021 |
Expected stock price volatility |  |  | 53.5 | % |  |  | 55.9 | %
Expected life of options (years) |  |  | 5.6 |  |  |  | 6.0 |
Expected dividend yield |  |  | 0 | % |  |  | 0 | %
Risk free interest rate |  |  | 2.3 | % |  |  | 0.6 | %
Schedule of restricted stock unit activity |
|  | Number of |
|  | Shares |
Non-vested at September 30, 2020 |  |  | 26,698 |
Granted |  |  | 13,776 |
Vested |  |  | (29,090 | )
Non-vested at September 30, 2021 |  |  | 11,384 |
Granted |  |  | 443,670 |
Vested |  |  | (40,624 | )
Non-vested at September 30, 2022 |  |  | 414,430 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: 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 https://asc.fasb.org/extlink&oid=128089324&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 https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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