<SEC-DOCUMENT>0001209191-18-054377.txt : 20181005
<SEC-HEADER>0001209191-18-054377.hdr.sgml : 20181005
<ACCEPTANCE-DATETIME>20181005162510
ACCESSION NUMBER:		0001209191-18-054377
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20181003
FILED AS OF DATE:		20181005
DATE AS OF CHANGE:		20181005

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Goodey John
		CENTRAL INDEX KEY:			0001718540

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08923
		FILM NUMBER:		181110760

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

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
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-10-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001718540</rptOwnerCik>
            <rptOwnerName>Goodey John</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>Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-10-03</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1659</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>61.90</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>44434.5594</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares withheld upon vesting of restricted stock to satisfy tax withholding obligation.</footnote>
        <footnote id="F2">Amount includes 0.0053 shares acquired since the last Form 4 filing as a result of reinvestment of dividends under the dividend reinvestment plan and 289 shares held by the reporting person on October 3, 2017, the date on which the reporting person became an officer of Welltower Inc., that were inadvertently omitted from his Form 3 filed on October 5, 2017.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: Matthew G. McQueen, Attorney-in-Fact
For: John Goodey</signatureName>
        <signatureDate>2018-10-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
