Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2026

Basis of Presentation [Abstract]

Schedule of Statement of Comprehensive Income Loss

Condensed Consolidated Statements of Comprehensive Income / (Loss)

		As reported in the financial statements ended June 30, 2025				As adjusted in the financial statements ended June 30, 2026
		6 months ended June 30,				6 months ended June 30,
USD’000		2025 (unaudited)				2025 (unaudited)

Non-operating expenses			(1,816	)			(1,846	)
Loss before income tax expense			(22,256	)			(22,286	)
Net loss			(22,257	)			(22,287	)

Less: Net loss attributable to noncontrolling interests			(17,807	)			(17,835	)
Net loss attributable to WISeKey International Holding Ltd			(4,450	)			(4,452	)

Comprehensive loss			(21,439	)			(21,469	)

Comprehensive loss attributable to noncontrolling interests			(17,742	)			(17,770	)
Comprehensive loss attributable to WISeKey International Holding Ltd			(3,697	)			(3,699	)

Schedule of Statements of Changes in Shareholders’ Equity

Condensed Consolidated Statements of Changes in Shareholders’ Equity

		As reported in the financial statements ended June 30, 2025 (unaudited)																				As adjusted in the financial statements ended June 30, 2026 (unaudited)
USD’000		Additional paid-in capital				Accumulated deficit				Total stockholders’ equity				Non-controlling interest				Total equity (deficit)				Additional paid-in capital				Accumulated deficit				Total stockholders’ equity				Non-controlling interest				Total equity (deficit)
As of December 31, 2024			316,431				(294,407	)			25,048				62,076				87,124				317,050				(294,407	)			25,667				61,457				87,124
Share Purchase Agreements and warrants (Second Anson SPA and Second L1 SPA and warrants)			1,594				-				1,594				24,206				25,800				1,829				-				1,829				23,971				25,800
ATM			2,213				-				2,213				24,910				27,123				2,461				-				2,461				24,662				27,123
Investment in Wecan			156				-				156				1,792				1,948				174				-				174				1,774				1,948
Net loss			-				(4,450	)			(4,450	)			(17,807	)			(22,257	)			-				(4,452	)			(4,452	)			(17,835	)			(22,287	)
As of June 30, 2025			326,471				(298,857	)			31,472				95,092				126,564				327,591				(298,859	)			32,590				93,944				126,534

Schedule of Statement of Cash Flow

Condensed Consolidated Statements of Cash Flows

		As reported in the financial statements ended June 30, 2025				As adjusted in the financial statements ended June 30, 2026
		6 months ended June 30,				6 months ended June 30,
USD’000		2025 (unaudited)				2025 (unaudited)
Cash Flows from operating activities:
Net income / (loss)			(22,257	)			(22,287	)
Increase / (decrease) in other current liabilities, excluding stock-based compensation liability			1,052				1,082