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4

PRIMARY DOCUMENT

Company: CIENA CORP
Filed: December 22, 2021
Period of Report: December 20, 2021
Accession Number: 0001177261-21-000036

View Document ↗ View on SEC.gov ↗

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© 2026 EdgarLookup. All rights reserved. Filing data sourced from the SEC EDGAR database. For informational purposes only — not financial advice. · Data last updated 3 months ago.