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v3.25.4

Income tax - Reconciliation of Expected Tax Expense to Tax Expense Report in Statement of Loss (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Major components of tax expense (income) [abstract] |  |  |
Loss before tax | $ (77,487) | $ (61,270) | $ (78,495)
Tax at Swiss statutory rate | 10,475 | 8,222 | 10,453
Effect of tax rates in foreign jurisdictions | (1,197) | (893) | (833)
Unrecognized deferred tax assets | (8,542) | (6,025) | (8,879)
Income not subject to tax | 260 | 249 | 303
Expense not deductible for tax purposes | (1,857) | (2,263) | (2,085)
Uncertain tax positions | (84) | (155) | (40)
Other | (567) | (358) | 595
Total income tax (expense) benefit | $ (1,512) | $ (1,223) | $ (486)

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