Earnings Per Share

12 Months Ended

Dec. 31, 2021

EARNINGS PER SHARE

Basic earnings per share is computed by dividing net income attributable to Republic Services, Inc. by the weighted average number of common shares (including vested but unissued RSUs and PSUs) outstanding during the period. Diluted earnings per share is based on the combined weighted average number of common shares and common share equivalents outstanding, which include, where appropriate, the assumed exercise of employee stock options, unvested RSUs and unvested PSUs at the expected attainment levels. We use the treasury stock method in computing diluted earnings per share.

Earnings per share for the years ended December 31, 2021, 2020, and 2019 are calculated as follows (in thousands, except per share amounts):


	2021		2020		2019
Basic earnings per share:
Net income attributable to Republic Services, Inc.	$	1,290,405	$	967,237	$	1,073,286
Weighted average common shares outstanding	318,811		319,282		321,058
Basic earnings per share	$	4.05	$	3.03	$	3.34
Diluted earnings per share:
Net income attributable to Republic Services, Inc.	$	1,290,405	$	967,237	$	1,073,286

Weighted average common shares outstanding	318,811		319,282		321,058
Effect of dilutive securities:
Options to purchase common stock	—		52		247
Unvested RSU awards	266		175		254
Unvested PSU awards	348		327		431
Weighted average common and common equivalent shares outstanding	319,425		319,836		321,990
Diluted earnings per share	$	4.04	$	3.02	$	3.33

During each of the years ended December 31, 2021 and 2020, there were less than 0.1 million antidilutive securities outstanding. During the year ended December 31, 2019 there were no antidilutive securities outstanding