<SEC-DOCUMENT>0001275168-22-000021.txt : 20220802
<SEC-HEADER>0001275168-22-000021.hdr.sgml : 20220802
<ACCEPTANCE-DATETIME>20220802164424
ACCESSION NUMBER:		0001275168-22-000021
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220729
FILED AS OF DATE:		20220802
DATE AS OF CHANGE:		20220802

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Rizzo Michael Anthony
		CENTRAL INDEX KEY:			0001856568

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40379
		FILM NUMBER:		221129391

	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
		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_165947304056292.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-07-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001856568</rptOwnerCik>
            <rptOwnerName>Rizzo Michael Anthony</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 Banking Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-07-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>641</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-07-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>641</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>641</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>22906</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By self as trustee</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Discretionary transfer of shares of common stock from The Rizzo Living Trust, dated 4/29/99, for the benefit of Mr. Rizzo's child and for which Mr. Rizzo served as custodian, to Mr. Rizzo's child. After the transfer, the child has direct ownership of the 641 shares. Mr. Rizzo's child resides in Mr. Rizzo's household.</footnote>
        <footnote id="F2">Shares are held by The Rizzo Family Trust, dated December 4, 2019, for which Mr. Rizzo serves as trustee. Consists of 129 shares of unvested stock awards which are scheduled to vest on January 1, 2023, 5,600 shares which were granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan and are scheduled to vest in equal installments over a four-year period, and 344 shares which were granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan and are scheduled to vest in equal installments over a two-year period, provided Mr. Rizzo remains employed by Five Star Bancorp on the respective vesting dates.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Michael A. Rizzo, by Heather C. Luck, Attorney-in-Fact</signatureName>
        <signatureDate>2022-08-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
