ITEM 5.02 - DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS

(b) On January 24, 2023, Ciena Corporation ("Ciena") announced the appointment of David M. Rothenstein as Senior Vice President, Chief Strategy Officer and Corporate Secretary, effective as of January 30, 2023. Mr. Rothenstein had been performing this role on an acting basis since March 2022. In his new role, Mr. Rothenstein will lead Ciena's strategic planning process, and will be responsible for enabling and implementing corporate strategy, including driving inorganic growth through corporate development activities such as mergers and acquisitions, strategic alliances and partnerships, and venture capital investments. In connection with his appointment to this new role, Mr. Rothenstein resigned his previous role as Senior Vice President and General Counsel of Ciena, also effective as of January 30, 2023.

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