<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2014-03-20</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001160990</issuerCik>
        <issuerName>PIMCO CORPORATE &amp; INCOME STRATEGY FUND</issuerName>
        <issuerTradingSymbol>PCN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001603721</rptOwnerCik>
            <rptOwnerName>BENZ WILLIAM ROBERT II</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PIMCO</rptOwnerStreet1>
            <rptOwnerStreet2>840 NEWPORT CENTER DRIVE, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>NEWPORT BEACH</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>92660</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>SEE REMARKS</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>Allianz Global Investors Fund Management LLC serves as the investment manager (the &quot;Investment Manager&quot;) of the Issuer.  Pacific Investment Management Company LLC (&quot;PIMCO&quot;) is an affiliate of the Investment Manager and serves as the sub-adviser of the Issuer.  The Reporting Person is a Managing Director of PIMCO and is a member of PIMCO's Executive Committee. Exhibit List:  Exhibit 24 - Power of Attorney</remarks>

    <ownerSignature>
        <signatureName>/s/ Raulin Villegas, Attorney-in-Fact for William Robert Benz II</signatureName>
        <signatureDate>2014-03-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
