LOSS PER COMMON SHARE (Tables)

12 Months Ended

Dec. 31, 2020

Computation of Basic and Diluted (Loss) Earnings Per Share

The following table sets forth the computation of basic and diluted (loss) earnings per share:


In millions, except per share data
	Year Ended December 31,
	2020		2019		2018
Numerator:
Net loss attributable to Stericycle, Inc.	$	(57.3)	$	(346.8)	$	(244.7)
Mandatory convertible preferred stock dividend	—		—		(25.5)
Gain on repurchase of preferred stock	—		—		16.9
Numerator for basic loss per share attributable to Stericycle, Inc. common shareholders	$	(57.3)	$	(346.8)	$	(253.3)
Denominator:
Denominator for basic loss per share - weighted average shares (1)	91.5		91.0		87.1
Effect of dilutive securities:
Stock-based compensation awards (2)	—		—		—
Mandatory convertible preferred stock (3)	—		—		—
Denominator for diluted loss per share - adjusted weighted average shares and after assumed exercises	91.5		91.0		87.1
Loss per share – Basic	$	(0.63)	$	(3.81)	$	(2.91)
Loss per share – Diluted	$	(0.63)	$	(3.81)	$	(2.91)

(1)For the year ended December 31, 2018, the denominator for basic (loss) earnings per share includes $1.4 million shares representing the weighted-average impact of the common shares outstanding as a result of the Series A Preferred Stock conversion on September 14, 2018.

(2)For the years ended December 31, 2020, 2019, and 2018 options to purchase shares and awards (in thousands) of 264, 74, and 124, respectively, were excluded from the computation of diluted (loss) earnings per share due to the net loss incurred for the year. In periods of net loss, options, RSUs, and PSUs are anti-dilutive and therefore excluded from the earnings per share calculation.

(3)For the year ended December 31, 2018, the weighted average common shares (in thousands) issuable upon the assumed conversion of the Series A Preferred Stock, totaling 3,367, were excluded from the computation of diluted (loss) earnings per share as such conversion would have been anti-dilutive.

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table presents Options and RSUs that were not included in the computation of diluted loss per share because the effect would have been anti-dilutive under the treasury stock method.


In thousands
	Year Ended December 31,
	2020	2019	2018
Options excluded from computation of diluted loss per share.	3,017	4,507	4,664
RSUs excluded from computation of diluted loss per share.	4	98	169