Adaptimmune Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Accumulated other comprehensive (loss)/income (Details)

v3.25.1

Accumulated other comprehensive (loss)/income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated other comprehensive (loss)/income
Balance at the beginning of the period	$ 11,849	$ 39,513
Foreign currency translation adjustments	(28,193)	6,815
Foreign currency gains (losses) on intercompany loan of a long-term investment nature, net of tax of $0	25,703	(5,782)
Unrealized holding gains (losses) on available-for-sale debt securities, net of tax of $0	(20)	(5)
Balance at the end of the period	(37,429)	24,375
Accumulated other comprehensive (loss)/income (parenthetical)
Foreign currency gains (losses) on intercompany loan of a long-term investment nature, tax	0	0
Unrealized holding gains (losses) on available-for-sale debt securities, tax	0	0
Accumulated foreign currency translation adjustments
Accumulated other comprehensive (loss)/income
Balance at the beginning of the period	(1,919)	(3,754)
Foreign currency translation adjustments	(28,193)	6,815
Foreign currency gains (losses) on intercompany loan of a long-term investment nature, net of tax of $0	25,703	(5,782)
Balance at the end of the period	(4,409)	(2,721)
Accumulated unrealized (losses) gains on available-for-sale debt securities
Accumulated other comprehensive (loss)/income
Balance at the beginning of the period	17	6
Unrealized holding gains (losses) on available-for-sale debt securities, net of tax of $0	(20)	(5)
Balance at the end of the period	(3)	1
Total accumulated other comprehensive (loss) income
Accumulated other comprehensive (loss)/income
Balance at the beginning of the period	(1,902)	(3,748)
Foreign currency translation adjustments	(28,193)	6,815
Foreign currency gains (losses) on intercompany loan of a long-term investment nature, net of tax of $0	25,703	(5,782)
Unrealized holding gains (losses) on available-for-sale debt securities, net of tax of $0	(20)	(5)
Balance at the end of the period	$ (4,412)	$ (2,720)

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