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Equity Incentive Plans (Tables) | 6 Months Ended
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Mar. 31, 2024
Equity Incentive Plans [Abstract] |
Summary of Activity in the Company's RSUs | A summary of activity in the Company’s RSUs for the six months ended March 31, 2024 is as follows:
|  | Number of units |  |  | Weighted-Average Grant Date Fair Value per Unit |
Outstanding at September 30, 2023 |  |  | 209,494 |  |  | $ | 6.84 |
Performance-based RSUs |  |  | 3,999,999 |  |  | $ | 8.65 |
Vested |  |  | (130,934 | ) |  | $ | 6.84 |
Outstanding at March 31, 2024 |  |  | 4,078,559 |  |  | $ | 8.61 |
Schedule of Stock Option Activity | Stock option activity for the six months ended March 31, 2024 is as follows:
|  | Number of Options |  |  | Weighted- Average Exercise Price per Share |  |  | Weighted- Average Remaining Contractual Term (years) |
Outstanding at September 30, 2023 |  |  | 5,905,684 |  |  | $ | 4.28 |  |  |  |  |
Granted |  |  | 32,200 |  |  | $ | 6.84 |  |  |  |  |
Exercised |  |  | (474,313 | ) |  | $ | 5.91 |  |  |  |  |
Forfeited |  |  | (941,042 | ) |  | $ | 6.53 |  |  |  |  |
Outstanding at March 31, 2024 |  |  | 4,522,529 |  |  | $ | 3.66 |  |  |  | 6.3 |
Exercisable at March 31, 2024 |  |  | 4,041,704 |  |  | $ | 3.29 |  |  |  | 6.1 |
Schedule of Weighted-Average Grant Date Fair Value of Options Granted | The fair value of stock options granted was estimated with the following assumptions:
|  | Six months ended March 31, |
|  | 2024 |  |  | 2023 |
|  | Range |  |  | Range |
|  | Low |  |  | High |  |  | Low |  |  | High |
Expected volatility |  |  | 54.8 | % |  |  | 55.6 | % |  |  | 52.4 | % |  |  | 53.6 | %
Expected dividend yield |  |  | 0 | % |  |  | 0 | % |  |  | 0 | % |  |  | 0 | %
Risk-free interest rate |  |  | 3.9 | % |  |  | 4.4 | % |  |  | 3.6 | % |  |  | 4.2 | %
Expected term (years) |  |  | 4.5 |  |  |  | 5.3 |  |  |  | 5.0 |  |  |  | 5.8 |
Schedule of Consolidated Statements of Operations and Comprehensive Loss | The condensed consolidated statements of operations and comprehensive loss include stock-based compensation expense as follows:
|  | Three months ended March 31, |  |  | Six months ended March 31, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Cost of revenue |  | $ | — |  |  | $ | 11 |  |  | $ | — |  |  | $ | 22 |
Research and development |  |  | 274 |  |  |  | 541 |  |  |  | 775 |  |  |  | 1,083 |
Selling, general and administrative |  |  | 1,167 |  |  |  | 5,227 |  |  |  | 13,371 |  |  |  | 8,530 |
Total stock-based compensation expense |  | $ | 1,441 |  |  | $ | 5,779 |  |  | $ | 14,146 |  |  | $ | 9,635 |

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