<SEC-DOCUMENT>0001699193-20-000018.txt : 20201222
<SEC-HEADER>0001699193-20-000018.hdr.sgml : 20201222
<ACCEPTANCE-DATETIME>20201222144626
ACCESSION NUMBER:		0001699193-20-000018
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201220
FILED AS OF DATE:		20201222
DATE AS OF CHANGE:		20201222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Phipps Jason
		CENTRAL INDEX KEY:			0001699193

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36250
		FILM NUMBER:		201407632

	MAIL ADDRESS:	
		STREET 1:		7410 RIDGE RD
		CITY:			HANOVER
		STATE:			MD
		ZIP:			21076

ISSUER:		

	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

	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>4
<SEQUENCE>1
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        <issuerName>CIENA CORP</issuerName>
        <issuerTradingSymbol>CIEN</issuerTradingSymbol>
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            <rptOwnerStreet2>7035 RIDGE RD.</rptOwnerStreet2>
            <rptOwnerCity>HANOVER</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21076-1426</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP Global Sales and Marketing</officerTitle>
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    <footnotes>
        <footnote id="F1">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/14/2016. Acquisition of the RSU was previously reported in Table I of reporting person's Form 3 on 3/1/2017.</footnote>
        <footnote id="F2">Shares reported include unvested Restricted Stock Units (RSUs) and Performance Stock Units (PSUs).</footnote>
        <footnote id="F3">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/12/2017. Acquisition of the RSU was previously reported in Table I of reporting person's Form 4 on 12/14/2017.</footnote>
        <footnote id="F4">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/18/2018. Acquisition of the RSU was previously reported in Table I of reporting person's Form 4 on 12/20/2018.</footnote>
        <footnote id="F5">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 12/17/2019. Acquisition of the RSU was previously reported in Table I of reporting person's Form 4 on 12/19/2019.</footnote>
        <footnote id="F6">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a restricted stock unit (RSU) award agreement dated 3/1/2017.  Acquisition of the RSU was previously reported in  Table I of reporting person's Form 4 on 3/3/2017.</footnote>
        <footnote id="F7">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a performance stock unit (PSU) award agreement dated 12/18/2018. The earning of the PSU was previously reported on Table I of reporting person's Form 4 on 12/19/2019.</footnote>
        <footnote id="F8">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a performance stock unit (PSU) award agreement dated 12/17/2019. The earning of the PSU was previously reported on Table I of reporting person's Form 4 on 12/18/2020.</footnote>
        <footnote id="F9">Represents shares withheld to cover payment of the tax liabilities of the reporting person related to a market stock unit (MSU) award agreement dated 12/12/2017.  The earning of the MSU was previously reported on Table I of reporting person's Form 4 on 12/18/2020.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Michelle Rankin For: Jason Phipps</signatureName>
        <signatureDate>2020-12-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
