CIEN · CIK 0000936395
CIENA CORP (CIEN) SEC Filings
Browse 3743 SEC filings for CIENA CORP, covering Dec 12, 1996 through Jul 6, 2026, organized by filing purpose with direct links to the original EDGAR documents.
Indexed filings
3,743
Filed in the last 12 months
193
History covered
1996–2026
Latest filing
4
Latest important filings
Jump directly to the most recent annual, quarterly, and current reports.
Latest annual report
10-K
Annual report · Dec 12, 2025
Open original filingLatest quarterly report
10-Q
Quarterly report · Jun 4, 2026
Open original filingLatest company update
8-K
Material agreement; Financial obligation; Other material event · Jun 11, 2026
Open original filingComplete filing history
Search by form or description, filter by purpose and year, and open the original SEC document.
50 filings
All categories
Search by form or description, filter by purpose and year, and open the original SEC document.
| Form | Description | Period ended | Filed |
|---|---|---|---|
| 4 | PRIMARY DOCUMENT | Jul 1, 2026 | Jul 6, 2026 |
| 4 | PRIMARY DOCUMENT | Jul 1, 2026 | Jul 6, 2026 |
| 4 | PRIMARY DOCUMENT | Jul 1, 2026 | Jul 6, 2026 |
| 4 | PRIMARY DOCUMENT | Jul 1, 2026 | Jul 6, 2026 |
| 144 | Notice of proposed securities sale | — | Jul 1, 2026 |
| 144 | Notice of proposed securities sale | — | Jul 1, 2026 |
| 144 | Notice of proposed securities sale | — | Jul 1, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 26, 2026 | Jun 30, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 24, 2026 | Jun 26, 2026 |
| 144 | Notice of proposed securities sale | — | Jun 26, 2026 |
| 144 | Notice of proposed securities sale | — | Jun 24, 2026 |
| 4 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jun 22, 2026 | Jun 23, 2026 |
| 3 | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | Jun 22, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 20, 2026 | Jun 23, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 15, 2026 | Jun 17, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 15, 2026 | Jun 17, 2026 |
| 4 | PRIMARY DOCUMENT | Jun 15, 2026 | Jun 17, 2026 |
| 144 | Notice of proposed securities sale | — | Jun 15, 2026 |
Page 1 of 2
Recent filing activity
Annual filing counts derived from this company's SEC history.
2026
107 filings
2025
176 filings
2024
159 filings
2023
196 filings
2022
153 filings
2021
156 filings
2020
184 filings
2019
191 filings
Sources and methodology
How this filing index is assembled and checked.
Filing metadata comes from SEC EDGAR submissions. Categories and plain-language labels are generated deterministically from SEC form and item codes; filing content is not summarized on this page.
Index updated: 7/15/2026
For research and education only. Always review the original SEC filing before making a decision.