10-K

Company

CIENA CORP

Filed

December 21, 2012

Period of Report

October 31, 2012

Accession Number

0000936395-12-000075

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 →