<SEC-DOCUMENT>0001193125-15-186053-index.html : 20150513
<SEC-HEADER>0001193125-15-186053.hdr.sgml : 20150513
<ACCEPTANCE-DATETIME>20150513170440
ACCESSION NUMBER:		0001193125-15-186053
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20150513
DATE AS OF CHANGE:		20150513

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CYAN INC
		CENTRAL INDEX KEY:			0001391636
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		IRS NUMBER:				205862569
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-87846
		FILM NUMBER:		15859180

	BUSINESS ADDRESS:	
		STREET 1:		1383 N MCDOWELL BLVD SUITE 300
		CITY:			PETALUMA
		STATE:			CA
		ZIP:			94954
		BUSINESS PHONE:		707-735-2300

	MAIL ADDRESS:	
		STREET 1:		1383 N MCDOWELL BLVD SUITE 300
		CITY:			PETALUMA
		STATE:			CA
		ZIP:			94954

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CYAN OPTICS INC
		DATE OF NAME CHANGE:	20070228

FILED BY:		

	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 13D

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>d925792dsc13d.htm
<DESCRIPTION>SCHEDULE 13D
<TEXT>
Document 1 - file: d925792dsc13d.htm

</DOCUMENT>
</SEC-DOCUMENT>