As of March 31, 2026 and September 30, 2025, the fair value of available-for-sale marketable securities, by type of security, was as follows:


	March 31, 2026
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Credit Losses		Fair Value
	(in thousands)
U.S. Treasury notes	$	192,434	$	—	$	(350	)	$	—	$	192,084
	$	192,434	$	—	$	(350	)	$	—	$	192,084


	September 30, 2025
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Credit Losses		Fair Value
	(in thousands)
U.S. Treasury notes	$	156,521	$	47	$	(2	)	$	—	$	156,566
	$	156,521	$	47	$	(2	)	$	—	$	156,566

As of March 31, 2026 and September 30, 2025, marketable securities consisted of investments that mature within one year, with the exception of certain U.S. Treasury notes as of March 31, 2026 which have maturities between one and two years and an aggregate fair value of $63,238.