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 |
| 8-K |
Current report
Results of operations
|
Sep 3, 2026 | Sep 3, 2026 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Other events
|
Jun 11, 2026 | Jun 8, 2026 |
| 8-K |
Current report
Other events
|
Jun 8, 2026 | Jun 8, 2026 |
| 10-Q | Quarterly report | Jun 4, 2026 | May 2, 2026 |
| 8-K |
Current report
Results of operations
|
Jun 4, 2026 | Jun 4, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Mar 31, 2026 | Mar 26, 2026 |
| 10-Q | Quarterly report | Mar 5, 2026 | Jan 31, 2026 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2026 | Mar 5, 2026 |
| ARS | Annual report to shareholders | Feb 12, 2026 | Nov 1, 2025 |
| DEFA14A | Additional proxy material | Feb 12, 2026 | — |
| DEF 14A | Proxy statement | Feb 12, 2026 | Mar 26, 2026 |
| 10-K | Annual report | Dec 12, 2025 | Nov 1, 2025 |
| 8-K |
Current report
Results of operations
|
Dec 11, 2025 | Dec 11, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 4, 2025 | Nov 30, 2025 |
| 8-K |
Current report
Other events
|
Oct 7, 2025 | Oct 7, 2025 |
| 8-K |
Current report
Other events
|
Sep 22, 2025 | Sep 22, 2025 |
| 10-Q | Quarterly report | Sep 4, 2025 | Aug 2, 2025 |
| 8-K |
Current report
Results of operations
|
Sep 4, 2025 | Sep 4, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 18, 2025 | Jun 18, 2025 |
| 10-Q | Quarterly report | Jun 5, 2025 | May 3, 2025 |
| 8-K |
Current report
Results of operations
|
Jun 5, 2025 | Jun 5, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
Apr 1, 2025 | Mar 27, 2025 |
| 10-Q | Quarterly report | Mar 12, 2025 | Feb 1, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 11, 2025 | Mar 11, 2025 |
| ARS | Annual report to shareholders | Feb 13, 2025 | Nov 2, 2024 |
| DEFA14A | Additional proxy material | Feb 13, 2025 | — |
| DEF 14A | Proxy statement | Feb 13, 2025 | Mar 27, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 21, 2025 | Jan 17, 2025 |
| 10-K | Annual report | Dec 20, 2024 | Nov 2, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure
|
Dec 12, 2024 | Dec 12, 2024 |
| 8-K |
Current report
Other events
|
Oct 2, 2024 | Oct 2, 2024 |
| 10-Q | Quarterly report | Sep 4, 2024 | Jul 27, 2024 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Sep 4, 2024 | Sep 4, 2024 |
| 10-Q | Quarterly report | Jun 6, 2024 | Apr 27, 2024 |
| 8-K |
Current report
Results of operations
|
Jun 6, 2024 | Jun 6, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Apr 23, 2024 | Apr 22, 2024 |
| S-8 | Employee stock plan registration | Apr 18, 2024 | — |
| 8-K |
Current report
Change in control, Officer or director change
|
Mar 26, 2024 | Mar 21, 2024 |
| 10-Q | Quarterly report | Mar 7, 2024 | Jan 27, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2024 | Mar 7, 2024 |
| ARS | Annual report to shareholders | Feb 8, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Feb 8, 2024 | — |
| DEF 14A | Proxy statement | Feb 8, 2024 | Mar 21, 2024 |
| PRE 14A | Preliminary proxy statement | Jan 29, 2024 | Mar 21, 2024 |
| 10-K | Annual report | Dec 15, 2023 | Oct 28, 2023 |
| 8-K |
Current report
Results of operations
|
Dec 7, 2023 | Dec 7, 2023 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Oct 25, 2023 | Oct 24, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 3, 2023 | Oct 2, 2023 |
| 10-Q | Quarterly report | Sep 6, 2023 | Jul 29, 2023 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Aug 31, 2023 | Aug 31, 2023 |
| 10-Q | Quarterly report | Jun 7, 2023 | Apr 29, 2023 |
| 8-K |
Current report
Results of operations
|
Jun 6, 2023 | Jun 6, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 6, 2023 | Apr 6, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Apr 3, 2023 | Mar 30, 2023 |
| 10-Q | Quarterly report | Mar 8, 2023 | Jan 28, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2023 | Mar 6, 2023 |
| DEFA14A | Additional proxy material | Mar 3, 2023 | — |
| DEFA14A | Additional proxy material | Feb 16, 2023 | — |
| ARS | Annual report to shareholders | Feb 16, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Feb 16, 2023 | Mar 30, 2023 |
| 8-K |
Current report
Material agreement
|
Feb 15, 2023 | Feb 10, 2023 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jan 27, 2023 | Jan 26, 2023 |
| 8-K |
Current report
Officer or director change
|
Jan 24, 2023 | Jan 24, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 23, 2023 | Jan 19, 2023 |
| 10-K | Annual report | Dec 16, 2022 | Oct 29, 2022 |
| 8-K |
Current report
Results of operations
|
Dec 8, 2022 | Dec 8, 2022 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Nov 22, 2022 | Nov 22, 2022 |
| 10-Q | Quarterly report | Sep 7, 2022 | Jul 30, 2022 |
| 8-K |
Current report
Results of operations
|
Sep 1, 2022 | Sep 1, 2022 |
| 10-Q | Quarterly report | Jun 8, 2022 | Apr 30, 2022 |
| 8-K |
Current report
Results of operations
|
Jun 2, 2022 | Jun 2, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
Apr 20, 2022 | Mar 31, 2022 |
| 10-Q | Quarterly report | Mar 9, 2022 | Jan 29, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 7, 2022 | Mar 7, 2022 |
| DEFA14A | Additional proxy material | Feb 15, 2022 | — |
| DEF 14A | Proxy statement | Feb 15, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 15, 2022 | Feb 15, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Jan 18, 2022 | Jan 18, 2022 |
| 8-K |
Current report
Other events
|
Jan 12, 2022 | Jan 11, 2022 |
| 8-K |
Current report
Other events
|
Jan 10, 2022 | Jan 10, 2022 |
| 10-K | Annual report | Dec 17, 2021 | Oct 30, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Dec 14, 2021 | Dec 13, 2021 |
| 8-K |
Current report
Results of operations, Other events
|
Dec 9, 2021 | Dec 9, 2021 |
| 8-K |
Current report
Other events
|
Nov 3, 2021 | Oct 31, 2021 |
| 10-Q | Quarterly report | Sep 8, 2021 | Jul 31, 2021 |
| 8-K |
Current report
Results of operations
|
Sep 2, 2021 | Sep 2, 2021 |
| 10-Q | Quarterly report | Jun 9, 2021 | May 1, 2021 |
| 8-K |
Current report
Results of operations
|
Jun 3, 2021 | Jun 3, 2021 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2021 | — |
| S-8 | Employee stock plan registration | Apr 21, 2021 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Apr 6, 2021 | Apr 1, 2021 |
| 10-Q | Quarterly report | Mar 10, 2021 | Jan 30, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 4, 2021 | Mar 4, 2021 |
| DEFA14A | Additional proxy material | Feb 18, 2021 | — |
| DEF 14A | Proxy statement | Feb 18, 2021 | Apr 1, 2021 |
Showing 101 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.