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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-10-22</periodOfReport>

    <notSubjectToSection16>true</notSubjectToSection16>

    <issuer>
        <issuerCik>0000095521</issuerCik>
        <issuerName>SUPERVALU INC</issuerName>
        <issuerTradingSymbol>SVU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001244321</rptOwnerCik>
            <rptOwnerName>COHEN IRWIN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11840 VALLEY VIEW ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>EDEN PRAIRIE</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55344</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-10-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>40222.515</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>32.5</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>by Directors Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">At the effective time, each outstanding director deferred share award was converted into the right to receive an amount in cash equal to the product of (i) the number of shares of the Company's common stock subject to such award and (ii) $32.50, without interest.</footnote>
    </footnotes>

    <remarks>This Form 4 reports securities disposed upon the effectiveness of the merger on October 22, 2018 (such time, the &quot;effective time&quot;) contemplated by that Agreement and Plan of Merger (the &quot;Merger Agreement&quot;), dated as of July 25, 2018, as amended October 10, 2018, by and between SUPERVALU INC. (the &quot;Company&quot;), SUPERVALU Enterprises, Inc., a wholly owned subsidiary of the Company, United Natural Foods, Inc. (&quot;UNFI&quot;), and Jedi Merger Sub, Inc., a wholly owned subsidiary of UNFI, as a result of which the Company became a wholly owned subsidiary of UNFI.</remarks>

    <ownerSignature>
        <signatureName>By: /s/ Stuart McFarland, Attorney in Fact For: Irwin S. Cohen</signatureName>
        <signatureDate>2018-10-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
