<SEC-DOCUMENT>0001179110-22-003170.txt : 20220526
<SEC-HEADER>0001179110-22-003170.hdr.sgml : 20220526
<ACCEPTANCE-DATETIME>20220526191739
ACCESSION NUMBER:		0001179110-22-003170
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220524
FILED AS OF DATE:		20220526
DATE AS OF CHANGE:		20220526

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McRoberts Michael
		CENTRAL INDEX KEY:			0001572136

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20797
		FILM NUMBER:		22972118

	MAIL ADDRESS:	
		STREET 1:		P. O. BOX 34630
		CITY:			SAN ANTONIO
		STATE:			TX
		ZIP:			78265

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RUSH ENTERPRISES INC \TX\
		CENTRAL INDEX KEY:			0001012019
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-AUTO DEALERS & GASOLINE STATIONS [5500]
		IRS NUMBER:				741733016
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		555 IH 35 SOUTH
		CITY:			NEW BRAUNFELS
		STATE:			TX
		ZIP:			78130
		BUSINESS PHONE:		8306265200

	MAIL ADDRESS:	
		STREET 1:		555 IH 35 SOUTH
		CITY:			NEW BRAUNFELS
		STATE:			TX
		ZIP:			78130
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-05-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001012019</issuerCik>
        <issuerName>RUSH ENTERPRISES INC \TX\</issuerName>
        <issuerTradingSymbol>RUSH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001572136</rptOwnerCik>
            <rptOwnerName>McRoberts Michael</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>555 IH 35 SOUTH, SUITE 500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW BRAUNFELS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>78130</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>COO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class B Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-05-24</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3739</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>49.10</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>147126.4705</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Shares reported are shares not distributed to the reporting person in order to satisfy the reporting person's tax obligations with respect to the distribution of shares of the Company's Class B Common Stock pursuant to the Company's Deferred Compensation Plan. In addition, the closing price reported was the closing price on May 6, 2022, which was the date the plan administrator used to determine the tax withholding for administrative purposes.</footnote>
        <footnote id="F2">Includes unvested restricted stock awards and certain shares and unvested restricted stock units included in the Company's deferred compensation plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Steven L. Keller, Attorney in Fact for Michael McRoberts</signatureName>
        <signatureDate>2022-05-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
