
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Marketable securities, current:
Corporate debt securities	$	100,903	$	16	$	(221)	$	100,698
U.S. government debt securities	20,457		14		(43)		20,428
U.S. Treasury securities	5,965		1		—		5,966
Marketable securities, non-current
Corporate debt securities	27,901		120		(14)		28,007


Total marketable securities, current and non-current	$	155,226	$	151	$	(278)	$	155,099


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Marketable securities, current:
Corporate debt securities	$	183,270	$	2	$	(2,068)	$	181,204
U.S. government debt securities	40,986		—		(1,184)		39,802
U.S. Treasury securities	25,650		—		(257)		25,393
Marketable securities, non-current
Corporate debt securities	53,592		2		(471)		53,123
U.S. government debt securities	8,000		—		(161)		7,839

Total marketable securities, current and non-current	$	311,498	$	4	$	(4,141)	$	307,361

Marketable securities classified as current have maturities of less than one year. Marketable securities classified as non-current are those that: (i) have a maturity of greater than one year, and (ii) we do not intend to liquidate within the next twelve months, although these funds are available for use and, therefore, are classified as available-for-sale. No available-

for-sale debt securities held as of December 31, 2023 or December 31, 2021 had remaining maturities greater than five years.

Marketable securities in unrealized loss positions as of December 31, 2023 consisted of the following (in thousands, except number of securities):


	Number of Securities	Fair Value		Gross Unrealized Losses
Marketable securities in continuous unrealized loss position for less than 12 months:
Corporate debt securities	64	$	68,563	$	(146)
U.S. government debt securities	9	11,914		(22)

Marketable securities in continuous unrealized loss position for greater than 12 months:
Corporate debt securities	18	22,138		(89)
U.S. government debt securities	3	5,979		(21)

Total marketable securities in unrealized loss position	94	$	108,594	$	(278)

Marketable securities in unrealized loss positions as of December 31, 2022 consisted of the following (in thousands, except number of securities):


	Number of Securities	Fair Value		Gross Unrealized Losses
Marketable securities in continuous unrealized loss position for less than 12 months:
Corporate debt securities	63	$	134,027	$	(1,262)
U.S. government debt securities	6	15,748		(245)
U.S. Treasury securities	4	5,575		(11)
Marketable securities in continuous unrealized loss position for greater than 12 months:
Corporate debt securities	36	82,375		(1,277)
U.S. government debt securities	7	31,892		(1,100)
U.S. Treasury securities	4	19,817		(246)
Total marketable securities in unrealized loss position	120	$	289,434	$	(4,141)

Based on factors such as historical experience, market data, issuer-specific factors, and current economic conditions, the Company did not record an allowance for credit losses at December 31, 2023 and December 31, 2022, related to these securities.