Ciena^® Corporation (NYSE: CIEN) expects to announce its fiscal fourth quarter and year-end financial results on Thursday, December 7, 2023 before the open of the financial markets. The press release will be available on Ciena’s website at www.ciena.com.

In conjunction with the announcement, Ciena will post an additional set of supporting materials to the Quarterly Results page of the Investor Relations section of its website. Ciena’s management will then host a live audio web broadcast beginning at 8:30 a.m. Eastern accessible via www.ciena.com.

Rebroadcast Information

For those listeners unable to participate in the live audio web broadcast, an archived version of the conference call will be available in the Events & Presentations section of the Investor Relations section of Ciena’s website.

About Ciena

Ciena (NYSE: CIEN) is a global leader in networking systems, services, and software. We build the most adaptive networks in the industry, enabling customers to anticipate and meet ever-increasing digital demands. For three-plus decades, Ciena has brought our humanity to our relentless pursuit of innovation. Prioritizing collaborative relationships with our customers, partners, and communities, we create flexible, open, and sustainable networks that better serve all users—today and into the future. For updates on Ciena, follow us on Twitter @Ciena, LinkedIn, the Ciena Insights blog, or visit www.ciena.com.

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