Earnings per Common Share

12 Months Ended

Dec. 31, 2015

7. Earnings per Common Share

The computation of basic earnings per common share for the periods presented is based upon the weighted average number of common shares outstanding during the periods. The computation of diluted earnings per common share includes the effect of nonvested nonqualified stock options and restricted stock units assuming such options and stock units were outstanding common shares at the beginning of the period. The effect of antidilutive securities and performance restricted stock units that have not met vesting criteria are excluded from the computation of diluted earnings per common share.

The following table sets forth the computation of basic and diluted earnings per common share:

	Year Ended December 31,
	2015			2014			2013
(Dollars in millions, except share amounts, in thousands, and per share amounts)
Net income (loss) attributable to Koppers	$	(72.0	)	$	(32.4	)	$	40.4
Less: (Loss) income from discontinued operations		(0.1	)		0.6			(0.1	)
(Loss) income from continuing operations attributable to Koppers	$	(71.9	)	$	(33.0	)	$	40.5
Weighted average common shares outstanding:
Basic		20,541			20,463			20,575
Effect of dilutive securities		0			0			240
Diluted		20,541			20,463			20,815
(Loss) earnings per common share – continuing operations:
Basic (loss) earnings per common share	$	(3.50	)	$	(1.61	)	$	1.96
Diluted (loss) earnings per common share		(3.50	)		(1.61	)		1.94
Other data:
Antidilutive securities excluded from computation of diluted earnings per common share		688			362			240