Company facts
- Industry
- Telephone & Telegraph Apparatus
- Headquarters
- Hanover, Maryland
- Most recent report
- 8-K, filed Jun 11, 2026
- Incorporated
- Maryland
- Filings on record
- 1,002+ filings
- On EDGAR
- CIK 936395
- Fiscal year ends
- October
- Filer status
- Large accelerated filer
Financials 8 of 23
News 8 of 52
Prospectuses and Registrations 2
Proxies 8 of 14
- DEFA14A Extra proxy material Feb 12, 2026
- DEF 14A Proxy statement for a shareholder vote Feb 12, 2026
- DEFA14A Extra proxy material Feb 13, 2025
- DEF 14A Proxy statement for a shareholder vote Feb 13, 2025
- DEFA14A Extra proxy material Feb 8, 2024
- DEF 14A Proxy statement for a shareholder vote Feb 8, 2024
- PRE 14A Preliminary proxy statement Jan 29, 2024
- DEFA14A Extra proxy material Mar 3, 2023
Ownership 8 of 901
- 4 Insider reported a trade Aug 18, 2026
- 4 Insider reported a trade Aug 18, 2026
- 4 Insider reported a trade Aug 18, 2026
- 4 Insider reported a trade Aug 18, 2026
- 144 Notice of a proposed sale of restricted stock Aug 17, 2026
- 144 Notice of a proposed sale of restricted stock Aug 14, 2026
- 144 Notice of a proposed sale of restricted stock Aug 14, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Aug 6, 2026
Other 8 of 10
- SD Conflict minerals disclosure May 28, 2026
- ARS Annual report sent to shareholders Feb 12, 2026
- SD Conflict minerals disclosure May 30, 2025
- ARS Annual report sent to shareholders Feb 13, 2025
- SD Conflict minerals disclosure May 30, 2024
- ARS Annual report sent to shareholders Feb 8, 2024
- SD Conflict minerals disclosure May 31, 2023
- ARS Annual report sent to shareholders Feb 16, 2023
Everything here comes from Ciena Corp's own filings on SEC EDGAR. The filing list is rechecked every hour.