CIEN SEC Filings
SEC filings for CIEN. Annual and quarterly reports, 8-K events,
Form 4 insider filings and 13D/G stake disclosures.
| Form | Filed | Accession |
|---|---|---|
| 8-K | Jun 11, 2026 | 0001193125-26-267607EDGAR |
| 8-K | Jun 8, 2026 | 0001193125-26-260665EDGAR |
| 8-K | Jun 4, 2026 | 0001628280-26-040614EDGAR |
| 8-K | Mar 31, 2026 | 0001628280-26-022342EDGAR |
| 8-K | Mar 5, 2026 | 0001628280-26-015006EDGAR |
| 8-K | Dec 11, 2025 | 0001628280-25-056425EDGAR |
| 8-K | Dec 3, 2025 | 0001628280-25-055133EDGAR |
| 8-K | Oct 7, 2025 | 0001628280-25-044494EDGAR |
| 8-K | Sep 22, 2025 | 0001628280-25-042266EDGAR |
| 8-K | Sep 4, 2025 | 0000936395-25-000037EDGAR |
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Source: SEC EDGAR.