The following table sets forth the computation of basic and diluted earnings per share ("EPS") which are calculated using the treasury stock method:


	Second Quarter				First Six Months
(In millions, except per share amounts)	2026		2025		2026		2025
Numerator
Earnings attributable to Eastman, net of tax	$	183	$	140	$	290	$	322



Denominator
Weighted average shares used for basic EPS	114.3		115.0		114.2		115.1
Dilutive effect of stock options and other awards	1.0		1.2		1.0		1.3
Weighted average shares used for diluted EPS	115.3		116.2		115.2		116.4

(Calculated using whole dollars and shares)
EPS
Basic	$	1.60	$	1.22	$	2.54	$	2.80
Diluted	$	1.59	$	1.20	$	2.51	$	2.77

Shares underlying stock options of 3,987,014 and 3,264,994 for second quarter 2026 and 2025, and 4,038,459 and 1,772,176 for first six months 2026 and 2025 were excluded from the calculations of diluted EPS because the grant date exercise price of these options was greater than the average market price of the Company's common stock and the effect of including them in the calculations of diluted EPS would have been antidilutive. No shares were repurchased in second quarter and first six months 2026, and 643,791 shares were repurchased in both second quarter and first six months 2025.