Earnings Per Common Share

9 Months Ended

Sep. 30, 2021

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

ASC 260, Earnings Per Share, concludes that all outstanding unvested share-based payment awards that contain rights to nonforfeitable 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, EPS attributable to IDEX was computed using the two-class method prescribed by ASC 260.

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


	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
Basic weighted average common shares outstanding	76,010	75,352	75,957	75,423
Dilutive effect of stock options, restricted stock and performance share units	442	608	451	696
Diluted weighted average common shares outstanding	76,452	75,960	76,408	76,119

Options to purchase approximately 0.3 million shares of common stock for both the three months ended September 30, 2021 and 2020, and 0.3 million and 0.6 million shares of common stock for the nine months ended September 30, 2021 and 2020, respectively, were not included in the computation of diluted EPS because the effect of their inclusion would have been antidilutive.