<SEC-DOCUMENT>0001209191-17-050440.txt : 20170828
<SEC-HEADER>0001209191-17-050440.hdr.sgml : 20170828
<ACCEPTANCE-DATETIME>20170828172947
ACCESSION NUMBER:		0001209191-17-050440
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170413
FILED AS OF DATE:		20170828
DATE AS OF CHANGE:		20170828

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kerr Mercedes
		CENTRAL INDEX KEY:			0001681417

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08923
		FILM NUMBER:		171055533

	MAIL ADDRESS:	
		STREET 1:		2449 GRIVEL PLACE
		CITY:			TUSTIN
		STATE:			CA
		ZIP:			92782

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WELLTOWER INC.
		CENTRAL INDEX KEY:			0000766704
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				341096634
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4500 DORR STREET
		CITY:			TOLEDO
		STATE:			OH
		ZIP:			43615
		BUSINESS PHONE:		419-247-2800

	MAIL ADDRESS:	
		STREET 1:		4500 DORR STREET
		CITY:			TOLEDO
		STATE:			OH
		ZIP:			43615

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HEALTH CARE REIT INC /DE/
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc4a.xml
<DESCRIPTION>FORM 4/A SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2017-04-13</periodOfReport>

    <dateOfOriginalSubmission>2017-04-17</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000766704</issuerCik>
        <issuerName>WELLTOWER INC.</issuerName>
        <issuerTradingSymbol>HCN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001681417</rptOwnerCik>
            <rptOwnerName>Kerr Mercedes</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4500 DORR STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TOLEDO</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43615</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP-Business Development</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance-Based Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2017-04-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3077</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3077</value>
                    <footnoteId id="F1"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3077</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The performance-based restricted stock units granted under the Welltower Inc. 2016 Long-Term Incentive Plan are target shares as defined in the 2017-2019 Long-Term Incentive Program. Final shares amounts will be determined at the conclusion of the performance period based on the Company's total shareholder return as determined by the Compensation Committee of the Board of Directors. Each restricted stock unit represents the right to receive one share of HCN's common stock.  The original Form 4 filed on April 17, 2017 reported the target shares as 3,531 shares due to a clerical error.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By:  Matthew McQueen
Attorney-in-Fact
For:  Mercedes T. Kerr</signatureName>
        <signatureDate>2017-08-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
