<SEC-DOCUMENT>0001275168-23-000075.txt : 20230427
<SEC-HEADER>0001275168-23-000075.hdr.sgml : 20230427
<ACCEPTANCE-DATETIME>20230427163752
ACCESSION NUMBER:		0001275168-23-000075
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230427
FILED AS OF DATE:		20230427
DATE AS OF CHANGE:		20230427

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lee Michael Eugene
		CENTRAL INDEX KEY:			0001858208

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40379
		FILM NUMBER:		23857802

	MAIL ADDRESS:	
		STREET 1:		3100 ZINFANDEL DRIVE, SUITE 100
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FIVE STAR BANCORP
		CENTRAL INDEX KEY:			0001275168
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				753100966
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3100 ZINFANDEL DRIVE
		STREET 2:		SUITE 100
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670
		BUSINESS PHONE:		916-626-5000

	MAIL ADDRESS:	
		STREET 1:		3100 ZINFANDEL DRIVE
		STREET 2:		SUITE 100
		CITY:			RANCHO CORDOVA
		STATE:			CA
		ZIP:			95670
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_168262785678551.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0407</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-04-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001275168</issuerCik>
        <issuerName>FIVE STAR BANCORP</issuerName>
        <issuerTradingSymbol>FSBC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001858208</rptOwnerCik>
            <rptOwnerName>Lee Michael Eugene</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O FIVE STAR BANCORP</rptOwnerStreet1>
            <rptOwnerStreet2>3100 ZINFANDEL DRIVE, SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>RANCHO CORDOVA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95670</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP &amp; Chief Regulatory Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-04-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>19.91</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35265</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By self as trustee</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Shares are held by The Michael E. Lee &amp; Kaylin M. Fadel-Lee Family Revocable Trust, for which Mr. Lee serves as a trustee. Consists of 3,466 unvested shares which were granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan and are scheduled to vest in equal installments over a remaining four-year period, and 258 and 129 unvested shares granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan scheduled to vest on January 1, 2024 and January 1, 2025, respectively, provided Mr. Lee remains employed by Five Star Bancorp on the respective vesting dates.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael E. Lee, by Heather C. Luck, Attorney-in-Fact</signatureName>
        <signatureDate>2023-04-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
