Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (436,349)	$ (98,260)
Adjustments to reconcile net loss to net cash flow from operating activities
Stock-based compensation	54,494	59,949
Depreciation and amortization	13,570	8,634
Amortization (accretion) of note premiums/discounts	7,886	(1,030)
Realized gain on investments	(80)	0
Non-cash interest expense on liability related to the sale of future royalties	17,705	13,064
Changes in operating assets and liabilities:
Accounts receivable	0	164
Prepaid expenses and other assets	(1,746)	27,913
Accounts payable	2,785	5,001
Accrued expenses	13,086	(32,082)
Deferred revenue	(866)	(113,144)
Operating lease, net	3,880	1,827
Net cash used in operating activities	(325,635)	(127,964)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(117,180)	(112,830)
Purchases of investments	(428,611)	(233,984)
Proceeds from sales and maturities of investments	348,642	220,150
Net cash used in investing activities	(197,149)	(126,664)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the exercises of stock options	2,166	2,232
Proceeds from the issuance of common stock, net of offering costs	429,265	0
Proceeds from the sale of future royalties	50,000	250,000
Net cash provided by financing activities	481,431	252,232
Net decrease in cash, cash equivalents and restricted cash	(41,353)	(2,396)
Effect of exchange rate on cash, cash equivalents and restricted cash	(139)	(275)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
BEGINNING OF PERIOD	110,891	108,005
END OF PERIOD	69,399	105,334
Supplementary disclosure of cash flows:
Income taxes paid	(3,062)	0
Supplemental disclosure of non-cash investing activities:
Capital expenditures included in accrued expenses	$ 6,909	$ 15,624