<SEC-DOCUMENT>0001209191-21-023855.txt : 20210331
<SEC-HEADER>0001209191-21-023855.hdr.sgml : 20210331
<ACCEPTANCE-DATETIME>20210331185455
ACCESSION NUMBER:		0001209191-21-023855
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210331
FILED AS OF DATE:		20210331
DATE AS OF CHANGE:		20210331

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Brockwell Bruce Todd
		CENTRAL INDEX KEY:			0001280983

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33037
		FILM NUMBER:		21795271

	MAIL ADDRESS:	
		STREET 1:		4713 STONEY CREEK PARKWAY
		CITY:			CHESTER
		STATE:			VA
		ZIP:			23831

	FORMER NAME:	
		FORMER CONFORMED NAME:	BROCKWELL BRUCE T
		DATE OF NAME CHANGE:	20040220

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Primis Financial Corp.
		CENTRAL INDEX KEY:			0001325670
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				201417448
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6830 OLD DOMINION DRIVE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22101
		BUSINESS PHONE:		(703) 893-7400

	MAIL ADDRESS:	
		STREET 1:		6830 OLD DOMINION DRIVE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22101

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Southern National Bancorp of Virginia Inc
		DATE OF NAME CHANGE:	20050502
</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>2021-03-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001325670</issuerCik>
        <issuerName>Primis Financial Corp.</issuerName>
        <issuerTradingSymbol>FRST</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001280983</rptOwnerCik>
            <rptOwnerName>Brockwell Bruce Todd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4713 STONEY CREEK PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHESTER</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>23831</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Head of Commercial</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-03-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>178</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.54</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9795</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects shares withheld upon vesting of restricted stock to satisfy tax withholding obligations.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Bruce T. Brockwell</signatureName>
        <signatureDate>2021-03-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
