Form 4 Filing for Gary B. Smith

Gary B. Smith, President & CEO of CIENA CORP, reported the disposition of Common Stock on September 20, 2026. The transactions involved the withholding of shares to cover tax liabilities related to restricted stock unit (RSU) awards. Specifically, 2985 shares were withheld for an award dated 12/13/2022, 3102 shares for an award dated 12/12/2023, 1743 shares for an award dated 12/17/2024, and 937 shares for an award dated 12/16/2025. All transactions were direct dispositions at a price of $348.8 per share. Following these transactions, Mr. Smith