<SEC-DOCUMENT>0001104659-21-017752-index.html : 20210210 <SEC-HEADER>0001104659-21-017752.hdr.sgml : 20210210 <ACCEPTANCE-DATETIME>20210210104644 ACCESSION NUMBER: 0001104659-21-017752 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20210210 DATE AS OF CHANGE: 20210210 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: CIENA CORP CENTRAL INDEX KEY: 0000936395 STANDARD INDUSTRIAL CLASSIFICATION: TELEPHONE & TELEGRAPH APPARATUS [3661] IRS NUMBER: 232725311 STATE OF INCORPORATION: DE FISCAL YEAR END: 1031 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-54195 FILM NUMBER: 21610404 BUSINESS ADDRESS: STREET 1: 7035 RIDGE ROAD CITY: HANOVER STATE: MD ZIP: 21076 BUSINESS PHONE: 4108658500 MAIL ADDRESS: STREET 1: 7035 RIDGE ROAD CITY: HANOVER STATE: MD ZIP: 21076 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: VANGUARD GROUP INC CENTRAL INDEX KEY: 0000102909 IRS NUMBER: 231945930 STATE OF INCORPORATION: PA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: PO BOX 2600 STREET 2: V26 CITY: VALLEY FORGE STATE: PA ZIP: 19482-2600 BUSINESS PHONE: 6106691000 MAIL ADDRESS: STREET 1: PO BOX 2600 STREET 2: V26 CITY: VALLEY FORGE STATE: PA ZIP: 19482-2600 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>tv0538-cienacorp.htm <DESCRIPTION>SCHEDULE 13G/A <TEXT> Document 1 - file: tv0538-cienacorp.htm
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