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Stock-Based Compensation | 6 Months Ended
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Mar. 31, 2026
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | Note 13 — Stock-Based Compensation The Company’s 2023 Equity Incentive Plan provides for the issuance of stock options, restricted stock awards, RSUs and other stock-based compensation awards to employees, directors, officers, consultants or others who provide services to the Company. The specific terms of such awards are to be established by the board of directors or a committee thereof. As of March 31, 2026, 94,209 shares of the Company’s Class A Common Stock are available for the grant of awards under the 2023 Equity Incentive Plan. Restricted Stock Units During the six months ended March 31, 2025, the Company and a former employee entered into certain agreements wherein the Company agreed to accelerate the vesting of 99,999 common stock warrants and grant the holder an additional 25,000 warrants to purchase shares of its Class A Common Stock. The warrants are immediately exercisable and have an exercise price of $0.10 per share. Subsequently, the Company agreed to cancel 45,000 of these common stock warrants and replace them with the same number of fully vested RSUs. As a result of the acceleration of vesting and the grant of the warrants, during the six months ended March 31, 2025 the Company recognized additional stock-based compensation expense of $6,917. A summary of activity in the Company’s RSUs for the six months ended March 31, 2026 is as follows: Schedule of Activity in the Company's RSUs
|  | Number of units |  |  | Weighted- Average Grant Date Fair Value per Unit |
Outstanding at September 30, 2025 |  |  | 954,562 |  |  | $ | 42.10 |
Granted |  |  | 112,326 |  |  |  | 3.14 |
Forfeited |  |  | (20,741 | ) |  |  | 12.69 |
Vested |  |  | (486,415 | ) |  |  | 36.16 |
Outstanding at March 31, 2026 |  |  | 559,732 |  |  |  | 45.08 |
Unrecognized compensation expense related to RSUs was $7,796 as of March 31, 2026 and is expected to be recognized over a weighted-average period of 1.6 years. Restricted Stock Awards A summary of activity in the Company’s RSAs for the six months ended March 31, 2026 is as follows: Schedule of Activity in the Company's RSAs
|  | Number of shares |  |  | Weighted- Average Grant Date Fair Value per Share |
Outstanding at September 30, 2025 |  |  | 487,250 |  |  | $ | 7.00 |
Vested |  |  | (71,000 | ) |  |  | 7.00 |
Outstanding at March 31, 2026 |  |  | 416,250 |  |  |  | 7.00 |
Unrecognized compensation expense related to RSAs was $1,912 as of March 31, 2026 and is expected to be recognized over a weighted-average period of 1.7 years. Stock Options Stock option activity for the six months ended March 31, 2026 is as follows: Schedule of Stock Option Activity
|  | Number of Options |  |  | Weighted- Average Exercise Price per Share |  |  | Weighted- Average Remaining Contractual Term (years) |
Outstanding at September 30, 2025 |  |  | 245,215 |  |  | $ | 48.50 |  |  |  |  |
Exercised |  |  | (32,353 | ) |  |  | 1.70 |  |  |  |  |
Forfeited |  |  | (1,124 | ) |  |  | 68.40 |  |  |  |  |
Expired |  |  | (1,417 | ) |  |  | 50.60 |  |  |  |  |
Outstanding at March 31, 2026 |  |  | 210,321 |  |  |  | 55.59 |  |  |  | 5.4 |
Exercisable at March 31, 2026 |  |  | 205,448 |  |  |  | 55.29 |  |  |  | 5.4 |
Unrecognized stock-based compensation expense related to stock options, totaling $237 as of March 31, 2026, is expected to be recognized over a weighted-average period of 0.6 months. The aggregate intrinsic value of stock options outstanding and stock options exercisable as of March 31, 2026 was $53 and $53, respectively. The total intrinsic value of options exercised during the six months ended March 31, 2026 and 2025 was $165 and $0, respectively. The total fair value of options that vested during the six months ended March 31, 2026 and 2025 was $224 and $342, respectively. No stock options were granted during the six months ended March 31, 2026 and 2025. The condensed consolidated statements of operations and comprehensive loss include stock-based compensation expense as follows: Schedule of Consolidated Statements of Operations and Comprehensive Loss
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
|  | Three months ended March 31, |  |  | Six months ended March 31, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Cost of revenue – product |  | $ | 48 |  |  | $ | 42 |  |  | $ | 84 |  |  | $ | 58 |
Cost of revenue – services |  |  | 35 |  |  |  | — |  |  |  | 57 |  |  |  | — |
Research and development |  |  | 19 |  |  |  | 65 |  |  |  | 109 |  |  |  | 146 |
Selling, general and administrative |  |  | 2,351 |  |  |  | 3,245 |  |  |  | 7,345 |  |  |  | 12,950 |
Total stock-based compensation expense |  | $ | 2,453 |  |  | $ | 3,352 |  |  | $ | 7,592 |  |  | $ | 13,154 |

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