Adaptimmune Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Marketable securities - available-for-sale debt securities (Tables)

Marketable securities - available-for-sale debt securities (Tables)

6 Months Ended

Jun. 30, 2023

Marketable securities - available-for-sale debt securities

As of June 30, 2023, the Company has the following investments in marketable securities (in thousands):


				Gross		Gross		Aggregate
	Remaining	Amortized		unrealized		unrealized		estimated
	contractual maturity	cost		gains		losses		fair value
Cash equivalents:
U.S. Treasury securities	Less than 3 months		29,069		33		—		29,102
		$	29,069	$	33	$	—	$	29,102

Available-for-sale debt securities:
Corporate debt securities	Less than 3 months	$	16,258	$	—	$	(26)	$	16,232
U.S. Treasury securities	Less than 3 months		41,675		12		(5)		41,682
Agency bonds	Less than 3 months		5,008		—		(56)		4,952
U.S. Treasury securities	3 months to 1 year		53,225		19		(9)		53,235
Agency bonds	3 months to 1 year		2,949		—		(8)		2,941
Corporate debt securities	3 months to 1 year		8,726		2		(32)		8,696
		$	127,841	$	33	$	(136)	$	127,738

Schedule of aggregate fair value and number of securities held by the Company in an unrealized loss position

The aggregate fair value (in thousands) and number of securities held by the Company (including those classified as cash equivalents) in an unrealized loss position as of June 30, 2023 and December 31, 2022 are as follows:



	June 30, 2023						December 31, 2022
	Fair market value of investments in an unrealized loss position		Number of investments in an unrealized loss position		Unrealized losses		Fair market value of investments in an unrealized loss position		Number of investments in an unrealized loss position		Unrealized losses
Marketable securities in a continuous loss position for 12 months or longer:
Corporate debt securities	$	15,554		4	$	(50)	$	74,481		16	$	(679)
Agency bond		4,952		1		(56)		4,854		1		(154)

Marketable securities in a continuous loss position for less than 12 months:
Corporate debt securities	$	6,424		2	$	(8)	$	11,283		2	$	(97)
U.S. Treasury securities	$	31,608		11		(14)		—		—		—
Agency bond	$	2,941		1		(8)		—		—		—
	$	61,479		19	$	(136)	$	90,618		19	$	(930)