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NON-CONTROLLING INTERESTS
 6 Months Ended
Jun. 30, 2026
Noncontrolling Interest [Abstract]  
NON-CONTROLLING INTERESTS
NOTE. 11 NON-CONTROLLING INTERESTS
In connection with the Transactions, Quantinuum Inc. became the sole managing member of Quantinuum Holdings and accordingly consolidates the results of operations of Quantinuum Holdings. The Non-controlling interest balance on the Company’s Condensed Consolidated Balance Sheets represents the economic interest in Quantinuum Holdings attributable to the Common Units held by the Continuing Common Unitholders. Net loss attributable to the non-controlling interest represents the portion of consolidated Net loss allocated to Continuing Common Unitholders based on their weighted‑average ownership interest in Quantinuum Holdings during the period.
As of June 30, 2026, Continuing Common Unitholders owned 226,771,877 Common Units, representing 86.3% of the economic interest in Quantinuum Holdings, and Quantinuum Inc. owned 36,134,196 Common Units, representing the remaining 13.7%.
The ownership of the Common Units is summarized as follows:
OwnershipOwnership Percentage
Quantinuum Inc.Continuing Common UnitholdersTotalQuantinuum Inc.Continuing Common UnitholdersTotal
Balances as of June 5, 202634,798,231 228,107,842 262,906,073 13.2 %86.8 %100.0 %
Exchange of Non-controlling interests1,335,965 (1,335,965)— 0.5 %(0.5)%— %
Balances as of June 30, 202636,134,196 226,771,877 262,906,073 13.7 %86.3 %100.0 %
The following table summarizes the effect of changes in ownership of Quantinuum Inc. on the Company's equity for the period during the Transactions through June 30, 2026 (in thousands):
Net loss attributable to Quantinuum Inc.$(65,418)
Accumulated other comprehensive (loss) income:
Foreign exchange translation adjustment(1,878)
Increase (decrease) as a result of non-controlling interest adjustment for changes in proportionate ownership in Quantinuum Holdings9 
Additional paid-in capital:
Increase as a result of stock-based compensation316,777 
Increase (decrease) as a result of non-controlling interest adjustment for stock-based compensation(273,239)
Increase (decrease) as a result of non-controlling interest adjustment for changes in proportionate ownership in Quantinuum Holdings14,716 
Total effect of changes in ownership interest on equity attributable to Quantinuum Inc.$(9,033)
Continuing Common Unitholders may exchange Common Units, together with corresponding shares of Class B common stock, for cash or shares of Class A common stock, at the discretion of independent directors who are disinterested, subject to the terms of the Quantinuum Holdings LLCA. Future exchanges will increase Quantinuum Inc.’s ownership in Quantinuum Holdings and correspondingly reduce the Non-controlling interest.