<SEC-DOCUMENT>0000883948-19-000108.txt : 20190321
<SEC-HEADER>0000883948-19-000108.hdr.sgml : 20190321
<ACCEPTANCE-DATETIME>20190321151949
ACCESSION NUMBER:		0000883948-19-000108
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190319
FILED AS OF DATE:		20190321
DATE AS OF CHANGE:		20190321

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			O'Brien Shawn E.
		CENTRAL INDEX KEY:			0001768984

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20293
		FILM NUMBER:		19696874

	MAIL ADDRESS:	
		STREET 1:		C.O UNION BANKSHARES CORPORATION
		STREET 2:		1051 EAST CARY STREET, STE 1200
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23219

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Union Bankshares Corp
		CENTRAL INDEX KEY:			0000883948
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				540412820
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1051 EAST CARY STREET
		STREET 2:		SUITE 1200
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23219
		BUSINESS PHONE:		800-990-4828

	MAIL ADDRESS:	
		STREET 1:		1051 EAST CARY STREET
		STREET 2:		SUITE 1200
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23219

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UNION FIRST MARKET BANKSHARES CORP
		DATE OF NAME CHANGE:	20140424

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Union Bankshares Corp
		DATE OF NAME CHANGE:	20140424

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UNION FIRST MARKET BANKSHARES CORP
		DATE OF NAME CHANGE:	20100201
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_155319596944363.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-03-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000883948</issuerCik>
        <issuerName>Union Bankshares Corp</issuerName>
        <issuerTradingSymbol>UBSH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001768984</rptOwnerCik>
            <rptOwnerName>O'Brien Shawn E.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O UNION BANKSHARES CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>1051 EAST CARY STREET, SUITE 1200</rptOwnerStreet2>
            <rptOwnerCity>RICHMOND</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23219</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-03-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4343</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4343</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Award of time-based restricted stock subject to a vesting schedule.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Rachael R. Lape, as attorney-in-fact for Shawn E. O'Brien</signatureName>
        <signatureDate>2019-03-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
