The following table presents the calculation of basic and diluted net loss per share for the period following the Reorganization Transactions during the Transactions through June 30, 2026 (in thousands, except share and per share data):


	Three Months Ended June 30,		Six Months Ended June 30,
	2026		2026
Numerator:
Net loss	$	(596,520)	$	(733,113)
Less: Net loss attributable to Quantinuum (Cayman) prior to the Transactions	(110,087)		(246,680)
Less: Net loss attributable to the non-controlling interest	(421,015)		(421,015)
Net loss attributable to Quantinuum Inc.	$	(65,418)	$	(65,418)

Denominator:
Weighted average shares used in computing net loss per share attributable to Class A common stockholders - basic and diluted (1)	33,914,995		33,914,995
Net loss per share attributable to Class A common shareholders - basic and diluted	$	(1.93)	$	(1.93)

(1) For the calculation of weighted-average shares outstanding, the Company assumes that shares issued upon the vesting of share-based compensation awards during the period were outstanding from the midpoint of the reporting period. This practical expedient is applied because the difference between this method and using precise daily vesting dates is immaterial to basic and diluted earnings per share.

Shares of Class B common stock do not share in the earnings or losses of Quantinuum, Inc. and are therefore not participating securities. As such, separate presentation of basic and diluted net loss per share of Class B common stock under the two-class method has not been presented.

During the period during the Transactions through June 30, 2026, the Company incurred net losses and, therefore, the effect of the Company’s potentially dilutive securities were not included in the calculation of diluted loss per share as the effect would be anti-dilutive. The following table contains outstanding weighted-average share totals with a potentially dilutive impact:


	Three Months Ended June 30,	Six Months Ended June 30,
	2026	2026
RSUs	5,756,251	5,756,251
Restricted shares	538,964	538,964
Common Units	227,582,892	227,582,892
Stock options	122,791	122,791
Total	234,000,898	234,000,898