EARNINGS PER SHARE CALCULATION

6 Months Ended

Apr. 30, 2022

EARNINGS PER SHARE CALCULATIONBasic net income per common share (“Basic EPS”) is computed using the weighted average number of common shares outstanding. Diluted net income per potential common share (“Diluted EPS”) is computed using the weighted average number

of the following, in each case, to the extent that the effect is not anti-dilutive: (i) common shares outstanding; (ii) shares issuable upon vesting of stock unit awards; and (iii) shares issuable under Ciena’s employee stock purchase plan and upon exercise of outstanding stock options, using the treasury stock method.

The following table presents the calculation of Basic and Diluted EPS (in thousands, except per share amounts):


	Quarter Ended				Six Months Ended
	April 30,		May 1,		April 30,		May 1,
	2022		2021		2022		2021
Net income	$	38,922	$	103,117	$	84,745	$	158,465
Basic weighted average shares outstanding	152,197		155,331		153,179		155,257
Effect of dilutive potential common shares	1,147		1,545		1,401		1,477
Diluted weighted average shares	153,344		156,876		154,580		156,734
Basic EPS	$	0.26	$	0.66	$	0.55	$	1.02
Diluted EPS	$	0.25	$	0.66	$	0.55	$	1.01
Antidilutive employee share-based awards, excluded	1,392		30		1,077		82