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SHARE-BASED COMPENSATION EXPENSE
 9 Months Ended
Jul. 27, 2024
Share-Based Payment Arrangement [Abstract]  
SHARE-BASED COMPENSATION EXPENSE SHARE-BASED COMPENSATION EXPENSE
At Ciena’s 2024 Annual Meeting of Stockholders on March 21, 2024, Ciena’s stockholders approved an amendment to the Ciena Corporation 2017 Omnibus Incentive Plan (the “2017 Plan”), effective as of such date, to (i) increase the number of shares available for issuance thereunder by 10.1 million shares, and (ii) increase the recoupment period for misconduct relating to accounting restatements from 12 months to three years. As of July 27, 2024, the total number of shares authorized for issuance under the 2017 Plan is 31.2 million and approximately 10.9 million shares remained available for issuance thereunder.

The following table summarizes share-based compensation expense for the periods indicated (in thousands):
Quarter EndedNine Months Ended
 July 27,July 29,July 27,July 29,
 2024202320242023
Products$1,660 $1,118 $4,738 $3,324 
Services3,122 2,687 9,486 7,643 
Share-based compensation expense included in cost of goods sold4,782 3,805 14,224 10,967 
Research and development13,118 10,954 40,064 30,919 
Selling and marketing10,315 8,770 31,786 25,949 
General and administrative9,257 9,377 29,211 27,313 
Share-based compensation expense included in operating expense32,690 29,101 101,061 84,181 
Share-based compensation expense capitalized in inventory, net(114)127 148 257 
Total share-based compensation expense$37,358 $33,033 $115,433 $95,405 

As of July 27, 2024, total unrecognized share-based compensation expense was approximately $251.9 million, which relates to unvested stock unit awards and is expected to be recognized over a weighted-average period of 1.4 years.