Marketable Securities

12 Months Ended

Dec. 31, 2025

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Marketable Securities

All marketable securities were considered available-for-sale at December 31, 2025 and 2024. On a recurring basis, the Company records its marketable securities at fair value using Level 1 or Level 2 inputs as discussed in Note 2, "Fair Value Measurements". The amortized cost, gross unrealized holding gains or losses, and fair value of the Company’s marketable securities by major security type at each balance sheet date are summarized in the tables below (in thousands):

	December 31, 2025
	Amortized Cost		Unrealized Holding Gains		Unrealized Holding Losses		Aggregate Fair Value
Short-term marketable securities:
U.S. government treasuries	$	599,200	$	893	$	(9)	$	600,084
Corporate debt securities	62,407		71		(9)		62,469
Total short-term marketable securities	661,607		964		(18)		662,553
Long-term marketable securities:
U.S. government treasuries	58,524		21		—		58,545
Corporate debt securities	39,710		69		(2)		39,777
Total long-term marketable securities	98,234		90		(2)		98,322
Total	$	759,841	$	1,054	$	(20)	$	760,875

	December 31, 2024
	Amortized Cost		Unrealized Holding Gains		Unrealized Holding Losses		Aggregate Fair Value
Short-term marketable securities:
U.S. government treasuries	$	627,809	$	1,618	$	(27)	$	629,400
Corporate debt securities	21,337		62		—		21,399
Commercial paper	6,572		—		—		6,572
Total short-term marketable securities	655,718		1,680		(27)		657,371
Long-term marketable securities:
U.S. government treasuries	334,300		788		(196)		334,892
Corporate debt securities	24,354		127		—		24,481
Total long-term marketable securities	358,654		915		(196)		359,373
Total	$	1,014,372	$	2,595	$	(223)	$	1,016,744

As of December 31, 2025 and 2024, some of the Company's marketable securities were in an unrealized loss position. The Company had not recognized an allowance for credit losses as of December 31, 2025 or 2024. The Company determined that it had the ability and intent to hold all marketable securities that have been in a continuous loss position until maturity or recovery. Further, a majority of the Company's investments were held in U.S. government securities, and the remainder were held with investment grade, high credit quality institutions. All marketable securities with unrealized losses as of each balance sheet date had been in a loss position for less than twelve months or the loss is not material.

As of December 31, 2025 all of the Company’s marketable securities had an effective maturity of less than two years.