Net (Loss) Income per Common Share

12 Months Ended

Dec. 31, 2020

6. Net (Loss) Income per Common Share

Basic net (loss) income per common share is computed by dividing net (loss) income by the weighted daily average number of shares of common stock outstanding during the period. Diluted net (loss) income per common share is based upon the weighted daily average number of shares of common stock outstanding for the period plus dilutive potential common shares, including restricted stock units, using the treasury-stock method. Unvested performance share units are excluded from the computation of weighted average diluted common shares outstanding if the performance targets upon which the issuance of the shares is contingent have not been achieved and the respective performance period has not been completed as of the end of the period. In periods where the Company has a net loss, restricted stock units are excluded from the calculation of net (loss) earnings per common share, as their inclusion would be anti-dilutive.

Basic and diluted net (loss) income per common share and a reconciliation the weighted average basic common shares outstanding to the weighted average diluted common shares outstanding was as follows:

	Year Ended December 31,
(millions, except share and per share data)	2020			2019		2018
Net (loss) income attributable to SP Plus Corporation	$	(172.8	)	$	48.8	$	53.2
Basic weighted average common shares outstanding		21,056,061			22,080,025		22,394,542
Dilutive impact of share-based awards		—			128,007		212,681
Diluted weighted average common shares outstanding		21,056,061			22,208,032		22,607,223
Net (loss) income per common share
Basic	$	(8.21	)	$	2.21	$	2.38
Diluted	$	(8.21	)	$	2.20	$	2.35

Due to the net loss during the year ended December 31, 2020, common stock equivalents arising from 51,276 restricted stock units were excluded from the computation.

There were no additional securities that could dilute basic earnings per common share in the future that were not included in the computation of diluted earnings per common share, other than those disclosed.