Net Income per Common Share

3 Months Ended

Mar. 31, 2024

11. Net Income per Common Share

Basic net income per common 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 common share is based upon the weighted daily average number of shares of common stock outstanding during the period plus all potentially dilutive stock-based awards, including RSU's and PSU's, using the treasury-stock method. Unvested PSU's 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.

Basic and diluted net income per common share and a reconciliation of the weighted average basic common shares outstanding to the weighted average diluted common shares outstanding during the three months ended March 31, 2024 and 2023 (unaudited) was as follows:


	Three Months Ended
(millions, except share and per share data)	March 31, 2024		March 31, 2023
Net income attributable to SP Plus Corporation	$	7.6	$	8.4
Basic weighted average common shares outstanding		19,803,578		19,701,426
Dilutive impact of share-based awards		189,391		165,874
Diluted weighted average common shares outstanding		19,992,969		19,867,300
Net income per common share
Basic	$	0.38	$	0.43
Diluted	$	0.38	$	0.42

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