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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2018-12-20</periodOfReport>

    <dateOfOriginalSubmission>2018-12-21</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001594686</issuerCik>
        <issuerName>WASHINGTON PRIME GROUP INC.</issuerName>
        <issuerTradingSymbol>WPG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001683396</rptOwnerCik>
            <rptOwnerName>von Blucher Sheryl G.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WASHINGTON PRIME GROUP INC.</rptOwnerStreet1>
            <rptOwnerStreet2>180 EAST BROAD STREET</rptOwnerStreet2>
            <rptOwnerCity>COLUMBUS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43215</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.0001 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2018-12-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.835</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>The filing of this Statement shall not be construed as an admission: (a) that the person filing this Statement is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of any equity securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person. Executed pursuant to Power of Attorney filed on September 1, 2016 as Exhibit 24 to a Form 3.

Editorial Note:  This Form 4/A is being filed to revise the signature block of the originally filed Form 4 to include signatory's title to reflect that the signor executed the original Form 4 &quot;as attorney-in-fact&quot; of the Reporting Person. There are no other changes or amendments to any other information reported in the originally filed Form 4.</remarks>

    <ownerSignature>
        <signatureName>/s/ Stephen E. Ifeduba, as attorney-in-fact, Originally Filed Form 4 Signature</signatureName>
        <signatureDate>2018-12-21</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Stephen E. Ifeduba, as attorney-in-fact</signatureName>
        <signatureDate>2020-10-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
