Earnings per Share

Basic earnings per share attributable to MSA Safety Incorporated common shareholders is computed by dividing net income, after the deduction of preferred stock dividends and undistributed earnings allocated to participating securities, by the weighted average number of common shares outstanding during the period. Diluted earnings per share attributable to MSA Safety Incorporated common shareholders assumes the issuance of common stock for all potentially dilutive share equivalents outstanding not classified as participating securities. Participating securities are defined as unvested stock-based payment awards that contain nonforfeitable rights to dividends.



Amounts attributable to MSA Safety Incorporated common shareholders:	Three Months Ended March 31,
(In thousands, except per share amounts)	2018			2017
Net income	$	32,371		$	14,413
Preferred stock dividends	(10		)	(10		)
Net income available to common equity	32,361			14,403
Dividends and undistributed earnings allocated to participating securities	(32		)	(17		)
Net income available to common shareholders	32,329			14,386

Basic weighted-average shares outstanding	38,216			37,766
Stock options and other stock compensation	562			827
Diluted weighted-average shares outstanding	38,778			38,593
Antidilutive stock options	—			—

Earnings per share:
Basic	$	0.85		$	0.38
Diluted	$	0.83		$	0.37