EARNINGS PER SHARE CALCULATION

9 Months Ended

Jul. 29, 2023

Basic 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 for the periods indicated (in thousands, except per share amounts):


	Quarter Ended				Nine Months Ended
	July 29,		July 30,		July 29,		July 30,
	2023		2022		2023		2022
Net income	$	29,733	$	10,512	$	163,628	$	95,257
Basic weighted average shares outstanding	149,690		149,862		149,472		152,083
Effect of dilutive potential common shares	287		601		395		1,126
Diluted weighted average shares	149,977		150,463		149,867		153,209
Basic EPS	$	0.20	$	0.07	$	1.09	$	0.63
Diluted EPS	$	0.20	$	0.07	$	1.09	$	0.62
Antidilutive employee share-based awards, excluded	3,383		1,640		2,567		1,264