v3.26.1
SUPPLEMENTAL BALANCE SHEET INFORMATION (Tables)
 6 Months Ended
Mar. 31, 2026
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
March 31,
2026		Balance at
September 30,
2025
Contract assets: Trade receivables$57,683 $74,156 
Contract assets: Unbilled revenue9,882 10,463 
Contract liabilities: Client deposits15,705 33,152 
Contract liabilities: Deferred revenue22,488 18,360
Trade receivables and contract assets, net of allowances for credit losses, consisted of the following:

 March 31,September 30,
2026 2025
Trade receivables$57,683 $74,156 
Unbilled revenue9,882 10,463 
Total67,565 84,619 
Less: Allowance for credit losses(6,208)(6,397)
Trade receivables and contract assets, net of allowances for credit losses$61,357 $78,222 
The composition of fees invoiced in advance is as follows:

 March 31,September 30,
2026 2025
Client deposits$15,705 $33,152 
Deferred revenue22,488 18,360 
Fees invoiced in advance$38,193 $51,512 
Schedule of Inventory
Inventories, net consisted of the following:

 March 31,September 30,
20262025
Raw materials$1,563 $1,651 
Work in progress33 — 
Finished goods4,896 5,027 
Research model inventory27,920 41,675 
Total34,412 48,353 
Less: Obsolescence reserve(3,865)(2,615)
Inventories, net$30,547 $45,738 
Schedule of Other Current Assets
Prepaid expenses and other current assets consisted of the following:

March 31,September 30,
20262025
Advances to suppliers$11,380 $19,396 
Prepaid research models5,022 3,502 
Tax-related receivables1,372 2,263 
Note receivable6,667 — 
Insurance recovery asset (1) (2)5,302 16,961 
Other7,642 6,768 
Prepaid expenses and other current assets$37,385 $48,890 
(1) In connection with ongoing negotiations to settle the securities class action lawsuit and related derivative lawsuits, the Company booked an $11,000 insurance recovery asset as of September 30, 2025. Refer to Note 11 - Contingencies and Commitments - Securities Class Action and Derivative Lawsuits for further discussion. The insurance recovery asset was settled during the three months ended March 31, 2026. Resultantly, no insurance recovery asset was recorded as of March 31, 2026.
(2) In connection with the 2025 Cybersecurity Incident (as defined in Note 11 - Contingencies and Commitments), the Company recorded a $4,618 and $4,033 insurance recovery receivable on its condensed consolidated balance sheets as of March 31, 2026 and September 30, 2025, respectively. Refer to Note 11 - Contingencies and Commitments for further information.
Schedule of Supplemental Balance Sheet information Related to Other Assets
The composition of other assets is as follows:

 March 31,September 30,
20262025
Note receivable$2,071 $7,641 
Funded status of defined benefit plan3,126 2,765 
Finance lease right-of-use assets, net4,182 2,900 
Other1,411 1,650 
Other assets$10,790 $14,956 
Schedule of Accrued Liabilities
Accrued expenses and other current liabilities consisted of the following:

 March 31,September 30,
2026 2025
Accrued compensation$12,455 $12,832 
Non-income taxes2,544 3,491 
Accrued interest4,383 4,388 
Current portion of long-term finance lease727 495 
Other9,069 7,516 
Resolution Agreement and Plea Agreement (1)5,000 5,000 
Settlement accrual (2)— 11,000 
Accrued expenses and other current liabilities$34,178 $44,722 
(1) Pursuant to the Resolution Agreement and Plea Agreement, the Company 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 $13,147 and $12,792 in other long-term liabilities on its condensed consolidated balance sheets as of March 31, 2026 and September 30, 2025, respectively.
(2) In connection with the ongoing negotiations to settle the securities class action lawsuit and related derivative lawsuits, the Company recorded an $11,000 settlement accrual as of September 30, 2025. Refer to Note 11 Contingencies and Commitments - Securities Class Action and Derivative Lawsuits for further discussion, including payments made during the three months ended March 31, 2026. As a result of those payments, there was no settlement accrual in connection with the securities class action lawsuit and related derivative lawsuits as of March 31, 2026.
Schedule of Other Liabilities
The composition of other long-term liabilities is as follows:

 March 31,September 30,
20262025
Long-term client deposits$12,396 $12,665 
Long-term finance leases3,520 2,430 
Other465 498 
Resolution Agreement and Plea Agreement (1)13,147 12,792 
Other long-term liabilities$29,528 $28,385 
(1) Pursuant to the Resolution Agreement and Plea Agreement, the Company 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 $13,147 and $12,792 in other long-term liabilities on its condensed consolidated balance sheets as of March 31, 2026 and September 30, 2025, respectively.