Second Quarter 2026 Conference CallQuantinuum will host a conference call at 5 PM Eastern time on Tuesday, August 11, 2026, to discuss its results for the second quarter ended June 30, 2026, and provide a business update. Adjusted EBITDA starts with Adjusted Net Loss, fully distributed, and further excludes interest income, net, depreciation, and amortization of acquired intangibles. Reconciliation of GAAP Net Loss to Adjusted Net Loss, Adjusted EBITDA and Adjusted Earnings Per Share (Unaudited) (dollars in thousands, except share and per share amounts) Amounts may not sum due to rounding. (8) The denominator comprises Class A common stock and all Common Units of Quantinuum Holdings. Class B common stock is non-economic, carries voting rights only, and is cancelled upon exchange of the corresponding Common Units.