Earnings / (Loss) per share (Tables)

6 Months Ended

Jun. 30, 2026

Earnings / (Loss) per share [Abstract]

Schedule of computation of basic and diluted net earnings / (loss) per share

The following table shows the computation of basic and diluted net earnings / (loss) per share for the Group.

	Unaudited 6 months ended June 30,
Earnings / (Loss) per share	2026			2025
Net loss attributable to WISeKey International Holding Ltd (USD’000)		(9,327	)		(4,452	)
Effect of potentially dilutive instruments on net loss (USD’000)		n/a			n/a
Net earnings / (loss) attributable to WISeKey International Holding Ltd after effect of potentially dilutive instruments (USD’000)		n/a			n/a

Class A Shares, par value CHF 0.01 and CHF 0.01
Shares used in net loss per Class A Share computation:
Weighted average Class A Shares outstanding - basic		1,632,220			1,600,880
Effect of potentially dilutive equivalent shares		n/a			n/a
Weighted average Class A Shares outstanding - diluted		1,632,220			1,600,880

Net loss per Class A Share
Basic weighted average earnings / (loss) per Class A Share attributable to WISeKey International Holding Ltd (USD)		(0.22	)		(0.11	)
Diluted weighted average earnings / (loss) per Class A Share attributable to WISeKey International Holding Ltd (USD)		(0.22	)		(0.11	)

Class B Shares, par value CHF 0.10 and CHF 0.10
Shares used in net earnings / (loss) per Class B Share computation
Weighted average Class B Shares outstanding - basic		4,044,091			4,023,691
Effect of potentially dilutive equivalent shares		n/a			n/a
Weighted average Class B Shares outstanding - diluted		4,044,091			4,023,691

Net earnings / (loss) per Class B Share
Basic weighted average earnings / (loss) per Class B Share attributable to WISeKey International Holding Ltd (USD)		(2.22	)		(1.06	)
Diluted weighted average earnings / (loss) per Class B Share attributable to WISeKey International Holding Ltd (USD)		(2.22	)		(1.06	)