<SEC-DOCUMENT>0001699192-22-000033.txt : 20221215
<SEC-HEADER>0001699192-22-000033.hdr.sgml : 20221215
<ACCEPTANCE-DATETIME>20221215170024
ACCESSION NUMBER:		0001699192-22-000033
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20221213
FILED AS OF DATE:		20221215
DATE AS OF CHANGE:		20221215

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McFeely Scott
		CENTRAL INDEX KEY:			0001699192

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36250
		FILM NUMBER:		221465522

	MAIL ADDRESS:	
		STREET 1:		7035 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:			1029

	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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<DESCRIPTION>PRIMARY DOCUMENT
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    <issuer>
        <issuerCik>0000936395</issuerCik>
        <issuerName>CIENA CORP</issuerName>
        <issuerTradingSymbol>CIEN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001699192</rptOwnerCik>
            <rptOwnerName>McFeely Scott</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CIENA CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>7035 RIDGE RD.</rptOwnerStreet2>
            <rptOwnerCity>HANOVER</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21076-1426</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, Networking Platforms</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Stock</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
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                <directOrIndirectOwnership>
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    <derivativeTable>
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            <transactionDate>
                <value>2022-12-13</value>
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                    <footnoteId id="F6"/>
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    <footnotes>
        <footnote id="F1">Reflects the number of stock units earned pursuant to the terms of a performance stock unit (PSU) award granted on December 14, 2021 reflecting the achievement of the related performance conditions. These shares vest in equal 1/2 amounts on each of December 20, 2022 and 2023.</footnote>
        <footnote id="F2">Shares reported include unvested Restricted Stock Units (RSUs), Performance Stock Units (PSUs), and Market Stock Units (MSUs).</footnote>
        <footnote id="F3">Reflects the number of stock units earned pursuant to the terms of a market stock unit (MSU) award granted on December 17, 2019 reflecting the level of achievement of the applicable total shareholder return (TSR) performance conditions. These shares vest on December 20, 2022.</footnote>
        <footnote id="F4">Each MSU will convert on the vesting date into common stock pursuant to the terms of the MSU award.</footnote>
        <footnote id="F5">Reflects Restricted Stock Units (RSUs) that vest over four years, with one-sixteenth of the grant amount vesting on March 20, June 20, September 20, and December 20 of each year, commencing on March 20, 2023.</footnote>
        <footnote id="F6">Each MSU represents the contingent right to receive, following vesting, between 0% and 200% of one share of the Issuer's common stock, subject to the level of achievement of applicable TSR performance conditions over a three-year period from fiscal 2020 through fiscal 2022.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Michelle Rankin For: Scott Mcfeely</signatureName>
        <signatureDate>2022-12-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
