The following is a summary of our short-term investments (in thousands):


	June 30, 2026
			Gross		Gross
	Amortized		Unrealized		Unrealized			Estimated
	Cost		Gains		Losses			Fair Value
U.S. treasury bills and government agency obligations	$	7,908	$	—	$	(3	)	$	7,905
Foreign commercial paper		6,571		—		(1	)		6,570
U.S. corporate debt securities		3,500		—		(1	)		3,499
U.S. commercial paper		2,478		—		(1	)		2,477
Foreign corporate debt securities		1,492		—		—			1,492
Total	$	21,949	$	—	$	(6	)	$	21,943


	December 31, 2025
			Gross		Gross
	Amortized		Unrealized		Unrealized		Estimated
	Cost		Gains		Losses		Fair Value
U.S. treasury bills and government agency obligations	$	5,542	$	2	$	—	$	5,544
Foreign commercial paper		3,979		—		—		3,979
U.S. corporate debt securities		5,439		1		—		5,440
U.S. commercial paper		1,545		—		—		1,545
Foreign corporate debt securities		1,475		1		—		1,476
Total	$	17,980	$	4	$	—	$	17,984

The amortized cost of debt securities is adjusted for amortization of premiums and accretion of discounts to maturity. We regularly monitor and evaluate the realizable value of our marketable securities. We did not recognize any impairment losses during the three and six months ended June 30, 2026 and 2025.

Unrealized gains and losses associated with our investments are reported in accumulated other comprehensive (loss) income. Realized gains and losses associated with our investments, if any, are reported in the statements of operations and comprehensive (loss) income. We did not recognize any realized gains or losses during the three and six months ended June 30, 2026 and 2025.