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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2017-09-18</periodOfReport>

    <dateOfOriginalSubmission>2017-09-25</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001082506</issuerCik>
        <issuerName>Great Elm Capital Group, Inc.</issuerName>
        <issuerTradingSymbol>GEC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001715823</rptOwnerCik>
            <rptOwnerName>Kleinman Adam M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GREAT ELM CAPITAL CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>800 SOUTH STREET, SUITE 230</rptOwnerStreet2>
            <rptOwnerCity>WALTHAM</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02453</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12258</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Performance Shares of Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>220923</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Vesting of these performance shares subject to pre-established performance goals over a period ending November 2021.</footnote>
    </footnotes>

    <remarks>General Counsel and Chief Operating Officer of Great Elm Capital Management, Inc.

This amendment corrects the prior filing with respect to 21,761 shares of the Issuer which were previously reported in error as indirectly beneficially owned by Mr. Kleinman.  Mr. Kleinman was one of five members of the investment committee for funds managed by MAST Capital Management, LLC (&quot;MAST&quot;) that owned these shares.  However, Mr. Kleinman, in his capacity as a partner of MAST and a member of its investment committee until September 18, 2017, did not have voting and dispositive power over these shares given that investment committee decisions were made by a majority vote.  As such, Mr. Kleinman did not at any time have beneficial ownership over these shares.  Additionally, from and after September 18, 2017, Mr. Kleinman is no longer a partner of MAST or a member of its investment committee and has no involvement in MAST's investment decisions with respect to these shares.</remarks>

    <ownerSignature>
        <signatureName>/s/ Richard S. Chernicoff as Attorney-in-Fact for Reporting Person</signatureName>
        <signatureDate>2017-10-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
