Basic and diluted earnings per share are computed using the two-class method, which is an earnings allocation method that determines earnings per share for common shares and participating securities. The undistributed earnings are allocated between common shares and participating securities as if all earnings had been distributed during the period. Participating securities and common shares have equal rights to undistributed earnings.

Basic earnings per share is calculated by taking net earnings attributable to Boeing shareholders, less Mandatory convertible preferred stock dividends accumulated during the period and earnings available to participating securities, divided by the basic weighted average common shares outstanding.

Diluted earnings per share is calculated by taking net earnings attributable to Boeing shareholders, less Mandatory convertible preferred stock dividends accumulated during the period and earnings available to participating securities, divided by the diluted weighted average common shares outstanding. Diluted weighted average common shares outstanding is calculated using the treasury stock method for share-based compensation awards and the if-converted method for Mandatory convertible preferred stock.


(In millions - except per share amounts)	Six months ended June 30		Three months ended June 30
	2025	2024	2025	2024
Net loss attributable to Boeing shareholders	($648)	($1,782)	($611)	($1,439)
Less: Mandatory convertible preferred stock dividends accumulated during the period	172		86
Less: earnings available to participating securities
Net loss available to common shareholders	($820)	($1,782)	($697)	($1,439)
Basic
Basic weighted average shares outstanding	755.2	614.8	756.8	616.6
Less: participating securities(1)	0.2	0.3	0.2	0.3
Basic weighted average common shares outstanding	755.0	614.5	756.6	616.3
Diluted


Diluted weighted average shares outstanding	755.2	614.8	756.8	616.6
Less: participating securities(1)	0.2	0.3	0.2	0.3
Diluted weighted average common shares outstanding	755.0	614.5	756.6	616.3
Net loss per share:
Basic	($1.09)	($2.90)	($0.92)	($2.33)
Diluted	(1.09)	(2.90)	(0.92)	(2.33)

The following table represents potential common shares that were not included in the computation of Diluted loss per share because the effect was antidilutive based on their strike price or the performance condition was not met.


(Shares in millions)	Six months ended June 30		Three months ended June 30
	2025	2024	2025	2024


Performance restricted stock units	0.6	0.6	0.5	0.7
Restricted stock units	0.3	1.0		2.0
Stock options	0.9	0.8	0.8	0.8

In addition, potential common shares of 36.8 million and 2.9 million for the six months ended June 30, 2025 and 2024 and 36.9 million and 2.7 million for the three months ended June 30, 2025 and 2024 were excluded from the computation of Diluted loss per share, because the effect would have been antidilutive as a result of incurring a net loss in those periods.