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4

Changes in Ownership

CIENA CORP Filed 2011-02-03 Acc 0001403694-11-000002

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4 Changes in Ownership , xslF345X03/edgardoc.xml

Around this filing

2011-02-11 4 Changes in Ownership
2011-02-03 4 Changes in Ownership
2011-02-03 SC 13G/A Amended Statement of Ownership
2011-02-02 ARS Annual Report to Security Holders
2011-02-02 DEFA14A Proxy Materials
2011-02-02 DEFA14A Proxy Materials
2011-01-26 4 Changes in Ownership

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