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SUPPLEMENTAL BALANCE SHEET INFORMATION (Tables) | 9 Months Ended
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Jun. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Contract Assets and Liabilities | The following table provides information about contract assets (trade receivables and unbilled revenue, excluding allowances for credit losses), and fees invoiced in advance (client deposits and deferred revenue):
| Balance at June 30, 2025 |  | Balance at September 30, 2024
Contract assets: Trade receivables | $ | 74,576 |  |  | $ | 65,867 |
Contract assets: Unbilled revenue | 10,614 |  |  | 14,624 |
Contract liabilities: Client deposits | 21,724 |  |  | 24,898 |
Contract liabilities: Deferred revenue | 18,527 |  |  | 17,088
Trade receivables and contract assets, net consisted of the following:
| June 30, |  | September 30,
| 2025 |  | 2024
Trade receivables | $ | 74,576 |  |  | $ | 65,867 |
Unbilled revenue | 10,614 |  |  | 14,624 |
Total | 85,190 |  |  | 80,491 |
Less: Allowance for credit losses | (6,445) |  |  | (6,931) |
Trade receivables and contract assets, net of allowances for credit losses | $ | 78,745 |  |  | $ | 73,560 |
The composition of fees invoiced in advance is as follows:
| June 30, |  | September 30,
| 2025 |  | 2024
Client deposits | $ | 21,724 |  |  | $ | 24,898 |
Deferred revenue | 18,527 |  |  | 17,088 |
Fees invoiced in advance | $ | 40,251 |  |  | $ | 41,986 |
Schedule of Inventory | Inventories, net consisted of the following:
| June 30, |  | September 30,
| 2025 |  | 2024
Raw materials | $ | 1,854 |  |  | $ | 1,868 |
Work in progress | 50 |  |  | 61 |
Finished goods | 4,763 |  |  | 4,174 |
Research model inventory | 41,234 |  |  | 14,870 |
Total | 47,901 |  |  | 20,973 |
Less: Obsolescence reserve | (2,827) |  |  | (2,800) |
Inventories, net | $ | 45,074 |  |  | $ | 18,173 |
Schedule of Other Current Assets | Prepaid expenses and other current assets consisted of the following:
| June 30, |  | September 30,
| 2025 |  | 2024
Advances to suppliers | $ | 19,261 |  |  | $ | 36,516 |
Prepaid research models | 4,011 |  |  | 4,993 |
Income tax receivable | 1,881 |  |  | 2,602 |
Note receivable | 1,226 |  |  | 1,280 |
Insurance recovery receivable (1) | 10,000 |  |  | — |
Other | 7,156 |  |  | 4,857 |
Prepaid expenses and other current assets | $ | 43,535 |  |  | $ | 50,248 |
(1) In connection with ongoing negotiations to settle the securities class action lawsuit and related derivative lawsuits, the Company booked a $10,000 insurance recovery receivable. Refer to Note 12 - Contingencies - Securities Class Action and Derivative Lawsuits for further discussion.
Schedule of Supplemental Balance Sheet information Related to Other Assets | The composition of other assets is as follows:
| June 30, |  | September 30,
| 2025 |  | 2024
Note receivable | $ | 6,233 |  |  | $ | 6,082 |
Funded status of defined benefit plan | 3,126 |  |  | 3,142 |
Finance lease right-of-use assets, net | 2,734 |  |  | 652 |
Other | 1,578 |  |  | 1,897 |
Other assets | $ | 13,671 |  |  | $ | 11,773 |
Schedule of Accrued Liabilities | Accrued expenses and other current liabilities consisted of the following:
| June 30, |  | September 30,
| 2025 |  | 2024
Accrued compensation | $ | 8,802 |  |  | $ | 10,851 |
Non-income taxes | 3,731 |  |  | 4,409 |
Accrued interest | 3,531 |  |  | 3,017 |
Current portion of long-term finance lease | 426 |  |  | 211 |
Other | 5,124 |  |  | 4,730 |
Resolution Agreement and Plea Agreement (1) | 5,000 |  |  | 5,000 |
Settlement accrual (2) | 9,307 |  |  | — |
Accrued expenses and other current liabilities | $ | 35,921 |  |  | $ | 28,218 |
(1) Pursuant to the Resolution Agreement and Plea Agreement, the Company paid $6,500 during fiscal 2024 and $5,000 during the three months ended June 30, 2025 and expects to pay an additional $17,000 over multiple years. Further, all interest accrued on the liabilities associated with the Resolution Agreement and Plea Agreement is payable at the time of the due date of the final payment, which is June 3, 2028. Therefore, accrued interest related to the Resolution Agreement and Plea Agreement is also presented within other long-term liabilities. Beginning in October 2024, interest accrues on the entire unpaid balance of the liabilities associated with the Resolution Agreement and Plea Agreement at an annual rate of 4.18%. Accordingly, the Company has included $12,613 and $17,000 in other long-term liabilities on its condensed consolidated balance sheets as of June 30, 2025 and September 30, 2024, respectively.
(2) In connection with the ongoing negotiations to settle the securities class action lawsuit and related derivative lawsuits, the Company booked a $10,000 liability, including a $9,307 settlement accrual and $693 within accounts payable. Refer to Note 12 Contingencies - Securities Class Action and Derivative Lawsuits for for further discussion.
Schedule of Other Liabilities | The composition of other long-term liabilities is as follows:
| June 30, |  | September 30,
| 2025 |  | 2024
Long-term client deposits | $ | 12,127 |  |  | $ | 16,966 |
Long-term finance leases | 2,316 |  |  | 433 |
Other | 510 |  |  | 564 |
Resolution Agreement and Plea Agreement (1) | 12,613 |  |  | 17,000 |
Other long-term liabilities | $ | 27,566 |  |  | $ | 34,963 |
(1) Pursuant to the Resolution Agreement and Plea Agreement, the Company paid $6,500 during fiscal 2024 and $5,000 during the three months ended June 30, 2025 and expects to pay an additional $17,000 over multiple years. Further, all interest accrued on the liabilities associated with the Resolution Agreement and Plea Agreement is payable at the time of the due date of the final payment, which is June 3, 2028. Therefore, accrued interest related to the Resolution Agreement and Plea Agreement is also presented within other long-term liabilities. Beginning in October 2024, interest accrues on the entire unpaid balance of the liabilities associated with the Resolution Agreement and Plea Agreement at an annual rate of 4.18%. Accordingly, the Company has included $12,613 and $17,000 in other long-term liabilities on its condensed consolidated balance sheets as of June 30, 2025 and September 30, 2024, respectively.

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