Earnings Per Share (EPS)

6 Months Ended

Jun. 30, 2018

Basic EPS is calculated by dividing Net earnings attributable to Allegion plc by the weighted-average number of ordinary shares outstanding for the applicable period. Diluted EPS is calculated after adjusting the denominator of the basic EPS calculation for the effect of all potentially dilutive ordinary shares, which in the Company’s case, includes shares issuable under share-based compensation plans.

The following table summarizes the weighted-average number of ordinary shares outstanding for basic and diluted EPS calculations for the three and six months ended June 30:



	Three months ended		Six months ended
In millions	2018	2017	2018	2017
Weighted-average number of basic shares	95.0	95.2	95.1	95.3
Shares issuable under incentive stock plans	0.6	0.7	0.6	0.7
Weighted-average number of diluted shares	95.6	95.9	95.7	96.0

At June 30, 2018, 0.2 million stock options were excluded from the computation of weighted-average diluted shares outstanding because the effect of including these shares would have been anti-dilutive.