Net Income per Common Share

3 Months Ended

Mar. 31, 2016

Basic net income per share is computed by dividing net income by the weighted daily average number of shares of common stock outstanding during the period. Diluted net income per share is based upon the weighted daily average number of shares of common stock outstanding for the period plus dilutive potential common shares, including stock options and restricted stock units using the treasury-stock method.

A reconciliation of the weighted average basic common shares outstanding to the weighted average diluted common shares outstanding is as follows (unaudited):



	Three Months Ended
(millions, except share and per share data)	March 31, 2016		March 31, 2015
Net income attributable to SP Plus Corporation	$	—	$	1.3
Basic weighted average common shares outstanding	22,328,578		22,127,725
Dilutive impact of share-based awards	264,927		400,884
Diluted weighted average common shares outstanding	22,593,505		22,528,609
Net income per common share
Basic	$	—	$	0.06
Diluted	$	—	$	0.06

For the three months ended March 31, 2016 and 2015, performance share units were excluded from the computation of weighted average diluted common share outstanding because the number of shares ultimately issuable is contingent on the Company's performance goals, which were not achieved as of the reporting date.

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