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STOCKHOLDERS’ EQUITY
 9 Months Ended
Aug. 02, 2025
Equity [Abstract]  
STOCKHOLDERS’ EQUITY STOCKHOLDERS’ EQUITY
Stock Repurchase Program

On October 2, 2024, Ciena announced that its Board of Directors authorized a three-year program to repurchase up to $1.0 billion of its common stock, commencing in fiscal 2025 and continuing through the end of fiscal 2027.

During the first nine months of fiscal 2025, Ciena repurchased approximately 3.3 million shares of its common stock for an aggregate purchase price of approximately $245.2 million, which equates to an average price of $75.02 per share. As of August 2, 2025, Ciena has an aggregate of $754.8 million authorized and remaining under its stock repurchase program. Ciena is required to allocate the purchase price for the shares of Ciena’s stock repurchased as a reduction of common stock and additional paid-in capital.

Stock Repurchases Related to Stock Unit Award Tax Withholdings
Ciena repurchases shares of its common stock to satisfy employee tax withholding obligations due on vesting of stock unit awards. The related purchase price of $60.0 million for the shares of Ciena’s stock repurchased during the first nine months of fiscal 2025 is reflected as a reduction to stockholders’ equity. Ciena is required to allocate the purchase price of the repurchased shares as a reduction of common stock and additional paid-in capital.