Skip to main navigation
Ciena Corporation logo
  • Overview
  • News
  • Events & Presentations
  • Stock Info
    Stock Quote & Chart Historical Stock Quote Investment Calculator Stock Split History Ownership Profile Analyst Coverage
  • Financials
    Quarterly Results Latest Annual Reports Archived Annual Reports SEC Filings Financial Fundamentals
    Income Balance Sheet Cash Flow Ratios
  • Corporate Responsibility
    Corporate Responsibility Governance Documents Executive Management Board of Directors Committee Composition
  • Resources
    2024 Annual Shareholder Meeting Investor FAQs Information Request Email Alerts Glossaries
    Telecom Glossary Network Virtualization Glossary 5G Glossary Acronym Guide
    Fact Sheet Multimedia
    YouTube Podcast Videos Blog
  • IR Contacts

SEC Filing Details

Document Details

Form
SC 13G/A
Filing Date
December 12, 2011
Document Date
December 12, 2011
Form Description
An amendment to the SC 13G filing
Filing Group
Other
Company
Ciena Corporation
Issuer
CIENA CORP

Filing Formats

View HTML
Download PDF
Download DOC

Shareholder Tools

Quick Links

  • 2022 Annual Shareholder Meeting
  • Annual Report Archives
  • Investor FAQs
  • Social Responsibility

Corporate

  • Network Insights
  • Products and Services
  • Support and next steps

Related Links

  • Sitemap
  • BluePlanet.com
  • ShopCiena.com
  • Worldwide

Social Media

  • Facebook
  • Instagram
  • Twitter
  • Linkedin
  • Youtube

Footer Bottom

  • About
  • Partners
  • Investors
  • Careers
  • Privacy Policy
  • Copyright © 2025 Ciena Corporation