FORM 10-K

Company

CIENA CORP

Filed

January 12, 2006

Period of Report

October 31, 2005

Accession Number

0000950133-06-000075

A 10-K is a company's comprehensive annual report, required by the SEC. It includes audited financial statements, a description of the business, risk factors, and management's discussion of results. Learn more about 10-K filings →