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Balance Sheet Accounts
 3 Months Ended
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Balance Sheet Accounts BALANCE SHEET ACCOUNTS
Property, Plant and Equipment
The following table summarizes the Company’s major classes of property, plant and equipment:
December 31, 2024September 30, 2024
(in thousands)
Land$2,996 $2,996 
Buildings238,775 75,988 
Research equipment68,868 65,353 
Manufacturing equipment2,574 — 
Furniture5,594 5,594 
Computers and software1,028 981 
Leasehold improvements104,389 104,410 
Construction in progress25,661 188,731 
449,885 444,053 
Less: Accumulated depreciation and amortization(62,816)(58,021)
Property, plant and equipment, net$387,069 $386,032 
Depreciation and amortization expense for property, plant and equipment for the three months ended December 31, 2024 and 2023 was $4.8 million and $3.8 million, respectively.
During the first quarter of fiscal 2025, the Company completed the build out of its manufacturing facility in Verona, Wisconsin. This resulted in the reclassification of $162.7 million from construction in progress to building and $2.6 million to manufacturing equipment as of December 31, 2024. Additionally, the Company began depreciating the newly completed manufacturing facility over a 39-year period and the manufacturing equipment over 7- or 10-year periods.
During the first quarter of fiscal 2024, the Company completed the build out of its laboratory and office facilities in Verona, Wisconsin, which resulted in the reclassification of $76.0 million from construction in progress to buildings as of December 31, 2024.
Accrued Expenses
Accrued expenses consist of the following:
December 31, 2024September 30, 2024
(in thousands)
Accrued R&D expenses
$20,379 $28,069 
Accrued R&D expenses; co-development
33,554 23,351 
Accrued capital expenditures
2,574 4,206 
Other
2,894 7,391 
Total accrued expenses
$59,401 $63,017