Leases (Tables)

3 Months Ended

Dec. 31, 2022

Leases [Abstract]

Schedule of Lease Assets and Liabilities and Lease Cost

The components of lease assets and liabilities along with their classification on the Company’s consolidated balance sheets were as follows:

Lease Assets and Liabilities	Classification	December 31, 2022		September 30, 2022
		(in thousands)
Operating lease assets	Right-of-use assets	$	41,655	$	58,291
Current operating lease liabilities	Lease liabilities	2,664		2,776
Non-current operating lease liabilities	Lease liabilities, net of current portion	79,470		78,800

		Three Months Ended December 31,
Lease Cost	Classification	2022		2021
		(in thousands)
Operating lease cost	Research and development	$	2,069	$	878
	General and administrative expense	533		420
Variable lease cost	Research and development	210		158
	General and administrative expense	—		—
Total		$	2,812	$	1,456

Summary of Maturities of Operating Lease Liabilities on an Undiscounted Basis

The following table presents payments of operating lease liabilities on an undiscounted basis as of December 31,

2022:

Year	Amounts
	(in thousands)
2023 (remainder of fiscal year)	$	4,470
2024	8,094
2025	11,800
2026	12,138
2027	11,297
2028 and thereafter	102,813
Total	$	150,612
Less imputed interest	(68,478)
Total operating lease liabilities (includes current portion)	$	82,134

Supplemental cash flow and other information related to leases was as follows:

	Three Months Ended December 31,
	2022			2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases (in thousands)	$	1,331		$	1,023
Weighted-average remaining lease term (in years)	6.9			7.8
Weighted-average discount rate	8.5		%	8.5		%