<SEC-DOCUMENT>0001393085-25-000007.txt : 20251112
<SEC-HEADER>0001393085-25-000007.hdr.sgml : 20251112
<ACCEPTANCE-DATETIME>20251112201954
ACCESSION NUMBER:		0001393085-25-000007
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20251111
FILED AS OF DATE:		20251112
DATE AS OF CHANGE:		20251112

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MARTINELLI MARK
		CENTRAL INDEX KEY:			0001393085
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42302
		FILM NUMBER:		251475006

	MAIL ADDRESS:	
		STREET 1:		119 DEERFIELD TERRACE
		CITY:			MAHWAH
		STATE:			NJ
		ZIP:			07430

	FORMER NAME:	
		FORMER CONFORMED NAME:	Martinelli Mark
		DATE OF NAME CHANGE:	20070313

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CHAIN BRIDGE BANCORP INC
		CENTRAL INDEX KEY:			0001392272
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		ORGANIZATION NAME:           	02 Finance
		EIN:				204957796
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1445-A LAUGHLIN AVENUE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22101
		BUSINESS PHONE:		703-748-2005

	MAIL ADDRESS:	
		STREET 1:		1445-A LAUGHLIN AVENUE
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22101
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2025-11-11</periodOfReport>

    <dateOfOriginalSubmission>2025-11-12</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001392272</issuerCik>
        <issuerName>CHAIN BRIDGE BANCORP INC</issuerName>
        <issuerTradingSymbol>CBNA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001393085</rptOwnerCik>
            <rptOwnerName>MARTINELLI MARK</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1445-A LAUGHLIN AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MCLEAN</rptOwnerCity>
            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22101</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-11-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>430</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.55</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2600</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <remarks>Amended to reflect correct total amount of securities beneficially owned</remarks>

    <ownerSignature>
        <signatureName>/s/ Hilary Albrecht attorney-in-fact</signatureName>
        <signatureDate>2025-11-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
