Ciena CORP 8-K Filing

Ticker: CIEN · Form: 8-K · Filed: Dec 11, 2025 · CIK: 936395

Sentiment: neutral

Filing Stats: 638 words · 3 min read · ~2 pages · Grade level 11.1 · Accepted 2025-12-11 07:07:39

Key Financial Figures

Filing Documents

02 Results of Operations and Financial Condition

Item 2.02 Results of Operations and Financial Condition. On December 11, 2025, Ciena Corporation ("Ciena") issued a press release announcing its financial results for its fiscal fourth quarter ended November 1, 2025. The text of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (this "Report"). As discussed in the press release, Ciena will be hosting an investor call to discuss its results of operations for its fiscal fourth quarter ended November 1, 2025. In conjunction with the issuance of this press release, Ciena posted to the quarterly results page of the "Investors" section of www.ciena.com an accompanying investor presentation. The investor presentation is furnished as Exhibit 99.2 to this Report. The information in Exhibits 99.1 and 99.2, as well as Item 2.02 of this Report, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, and shall not be incorporated by reference into any registration statement pursuant to the Securities Act of 1933, as amended. Investors are encouraged to review the "Investors" page of our website at www.ciena.com because, as with the other disclosure channels that we use, from time to time we may post material information exclusively on that site.

01 Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits. Exhibit Number Description of Document 99.1 Text of Press Release dated December 11, 2025, issued by Ciena Corporation, reporting its results of operations for its fiscal fourth quarter ended November 1, 2025. 99.2 Investor Presentation for Ciena Corporation's fisc al fourth quarter ended Novemb er 1 , 2025. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Ciena Corporation Date: December 11, 2025 By: /s/ Sheela Kosaraju Sheela Kosaraju Senior Vice President, General Counsel and Assistant Secretary

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