Earnings Per Common Share

9 Months Ended

Sep. 30, 2023

Diluted earnings per common share (“EPS”) attributable to IDEX is computed by dividing Net income attributable to IDEX by the weighted average number of common shares outstanding (basic) plus common stock equivalents outstanding (diluted) for the period. Common stock equivalents consist of restricted stock, performance share units and stock options, which have been included in the calculation of weighted average common shares outstanding using the treasury stock method.

ASC 260, Earnings Per Share, concludes that all outstanding unvested share-based payment awards that contain rights to non-forfeitable dividends participate in undistributed earnings with common shareholders. If awards are considered participating securities, the Company is required to apply the two-class method of computing basic and diluted earnings per share. The Company has determined that its outstanding shares of restricted stock are participating securities. Accordingly, Diluted EPS attributable to IDEX was computed using the two-class method prescribed by ASC 260.

Basic weighted average common shares outstanding reconciles to diluted weighted average common shares outstanding as follows:


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Basic weighted average common shares outstanding	75.6	75.4	75.6	75.8
Dilutive effect of restricted stock, performance share units and stock options	0.3	0.4	0.3	0.3
Diluted weighted average common shares outstanding	75.9	75.8	75.9	76.1

Options to purchase shares of common stock that were not included in the computation of Diluted EPS attributable to IDEX because the effect of their inclusion would have been antidilutive were as follows:


	Three Months Ended September 30,		Nine Months Ended September 30,
	2023	2022	2023	2022
Antidilutive shares not included in Diluted EPS attributable to IDEX	0.2	0.5	0.2	0.5