<SEC-DOCUMENT>0001437958-24-000027.txt : 20240207
<SEC-HEADER>0001437958-24-000027.hdr.sgml : 20240207
<ACCEPTANCE-DATETIME>20240207160626
ACCESSION NUMBER:		0001437958-24-000027
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240205
FILED AS OF DATE:		20240207
DATE AS OF CHANGE:		20240207

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Sand Jonathan E
		CENTRAL INDEX KEY:			0002005908
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38589
		FILM NUMBER:		24604310

	MAIL ADDRESS:	
		STREET 1:		5415 EVERGREEN WAY
		CITY:			EVERETT
		STATE:			WA
		ZIP:			98203

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COASTAL FINANCIAL CORP
		CENTRAL INDEX KEY:			0001437958
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		ORGANIZATION NAME:           	02 Finance
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			WA

	BUSINESS ADDRESS:	
		STREET 1:		5415 EVERGREEN WAY
		CITY:			EVERETT
		STATE:			WA
		ZIP:			98203
		BUSINESS PHONE:		425-257-1652

	MAIL ADDRESS:	
		STREET 1:		5415 EVERGREEN WAY
		CITY:			EVERETT
		STATE:			WA
		ZIP:			98203
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1707339974.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-02-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001437958</issuerCik>
        <issuerName>COASTAL FINANCIAL CORP</issuerName>
        <issuerTradingSymbol>CCB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002005908</rptOwnerCik>
            <rptOwnerName>Sand Jonathan E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5415 EVERGREEN WAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>EVERETT</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98203</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Chief Credit Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-02-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1819</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>19811</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents award of time-based restricted stock units (RSUs) pursuant to the Coastal Financial Corporation 2018 Omnibus Incentive Plan.  The RSUs vest in four approximately equal installments commencing on February 5, 2025.  Each restricted stock unit represents the right to receive one share of common stock upon vesting.</footnote>
        <footnote id="F2">Includes 5,725 time-based restricted stock units (RSUs) pursuant to the Coastal Financial Corporation 2018 Omnibus Incentive Plan. 622 RSUs vest in six approximately equal remaining annual installments; 1,819 RSUs vest in four approximately equal remaining annual installments; 1,487 RSUs vest in three approximately equal remaining annual installments; 1,797 RSUs vest in approximately two equal remaining annual installments.  Each restricted stock unit represents the right to receive one share of common stock upon vesting.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Melisa Nelson, as Attorney-in-fact</signatureName>
        <signatureDate>2024-02-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
