<SEC-DOCUMENT>0001209191-23-051367.txt : 20231003
<SEC-HEADER>0001209191-23-051367.hdr.sgml : 20231003
<ACCEPTANCE-DATETIME>20231003153008
ACCESSION NUMBER:		0001209191-23-051367
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20231002
FILED AS OF DATE:		20231003
DATE AS OF CHANGE:		20231003

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Alexander Vicki
		CENTRAL INDEX KEY:			0001966490

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41028
		FILM NUMBER:		231303097

	MAIL ADDRESS:	
		STREET 1:		20202 HIGHWAY 59 NORTH, SUITE 190
		CITY:			HUMBLE
		STATE:			TX
		ZIP:			77338

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Third Coast Bancshares, Inc.
		CENTRAL INDEX KEY:			0001781730
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTIONS, NOT FEDERALLY CHARTERED [6036]
		IRS NUMBER:				462135597
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		20202 HIGHWAY 59 NORTH
		STREET 2:		SUITE 190
		CITY:			HUMBLE
		STATE:			TX
		ZIP:			77338
		BUSINESS PHONE:		2814467000

	MAIL ADDRESS:	
		STREET 1:		20202 HIGHWAY 59 NORTH
		STREET 2:		SUITE 190
		CITY:			HUMBLE
		STATE:			TX
		ZIP:			77338
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-10-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001781730</issuerCik>
        <issuerName>Third Coast Bancshares, Inc.</issuerName>
        <issuerTradingSymbol>TCBX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001966490</rptOwnerCik>
            <rptOwnerName>Alexander Vicki</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>20202 HIGHWAY 59 NORTH, SUITE 190</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HUMBLE</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77338</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-10-02</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9910</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20470</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of restricted common stock, which vest in four equal annual installments beginning on the anniversary of the grant date, subject to the terms of the award.</footnote>
    </footnotes>

    <remarks>Executive Vice President and Chief Risk and Compliance Officer</remarks>

    <ownerSignature>
        <signatureName>/s/ R. John McWhorter, attorney-in-fact</signatureName>
        <signatureDate>2023-10-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
