Ciena Corp SEC filings CIEN

Ciena Corp has 1,000 filings in SEC EDGAR's recent list, going back to Feb 8, 2021. Its latest annual report, Form ARS, was filed on Feb 12, 2026 for the period ended Nov 1, 2025. The latest quarterly report (Form 10-Q) was filed on Sep 3, 2026, covering the quarter ended Aug 1, 2026. The most recent current report (Form 8-K) was filed on Sep 3, 2026 (results of operations). The company's fiscal year ends on October 31.

Form Description Filed Period
10-Q Quarterly report Sep 3, 2026 Aug 1, 2026
10-Q Quarterly report Jun 4, 2026 May 2, 2026
10-Q Quarterly report Mar 5, 2026 Jan 31, 2026
10-Q Quarterly report Sep 4, 2025 Aug 2, 2025
10-Q Quarterly report Jun 5, 2025 May 3, 2025
10-Q Quarterly report Mar 12, 2025 Feb 1, 2025
10-Q Quarterly report Sep 4, 2024 Jul 27, 2024
10-Q Quarterly report Jun 6, 2024 Apr 27, 2024
10-Q Quarterly report Mar 7, 2024 Jan 27, 2024
10-Q Quarterly report Sep 6, 2023 Jul 29, 2023
10-Q Quarterly report Jun 7, 2023 Apr 29, 2023
10-Q Quarterly report Mar 8, 2023 Jan 28, 2023
10-Q Quarterly report Sep 7, 2022 Jul 30, 2022
10-Q Quarterly report Jun 8, 2022 Apr 30, 2022
10-Q Quarterly report Mar 9, 2022 Jan 29, 2022
10-Q Quarterly report Sep 8, 2021 Jul 31, 2021
10-Q Quarterly report Jun 9, 2021 May 1, 2021
10-Q Quarterly report Mar 10, 2021 Jan 30, 2021

Showing 18 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

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Company profile

Industry
Telephone & Telegraph Apparatus (SIC 3661)
Listed as
CIEN (NYSE)
Fiscal year ends
October 31
Incorporated in
MD
Headquarters
Hanover, MD
SEC filer status
Large accelerated filer
SEC CIK
936395

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.