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 |
|---|---|---|---|
| ARS | Annual report to shareholders | Feb 12, 2026 | Nov 1, 2025 |
| 10-K | Annual report | Dec 12, 2025 | Nov 1, 2025 |
| ARS | Annual report to shareholders | Feb 13, 2025 | Nov 2, 2024 |
| 10-K | Annual report | Dec 20, 2024 | Nov 2, 2024 |
| ARS | Annual report to shareholders | Feb 8, 2024 | Dec 31, 2023 |
| 10-K | Annual report | Dec 15, 2023 | Oct 28, 2023 |
| ARS | Annual report to shareholders | Feb 16, 2023 | Dec 31, 2022 |
| 10-K | Annual report | Dec 16, 2022 | Oct 29, 2022 |
| 10-K | Annual report | Dec 17, 2021 | Oct 30, 2021 |
Showing 9 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.