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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001181431-09-018030.txt : 20090401
<SEC-HEADER>0001181431-09-018030.hdr.sgml : 20090401
<ACCEPTANCE-DATETIME>20090401140206
ACCESSION NUMBER:		0001181431-09-018030
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090331
FILED AS OF DATE:		20090401
DATE AS OF CHANGE:		20090401

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PATTERSON COMPANIES, INC.
		CENTRAL INDEX KEY:			0000891024
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-MEDICAL, DENTAL & HOSPITAL EQUIPMENT & SUPPLIES [5047]
		IRS NUMBER:				410886515
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			0429

	BUSINESS ADDRESS:	
		STREET 1:		1031 MENDOTA HEIGHTS RD
		CITY:			ST PAUL
		STATE:			MN
		ZIP:			55120-1401
		BUSINESS PHONE:		6516861600

	MAIL ADDRESS:	
		STREET 1:		1031 MENDOTA HEIGHTS RD
		CITY:			ST PAUL
		STATE:			MN
		ZIP:			55120-1401

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PATTERSON DENTAL CO
		DATE OF NAME CHANGE:	19950111

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ARMSTRONG R STEPHEN
		CENTRAL INDEX KEY:			0001244028

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-20572
		FILM NUMBER:		09722533

	MAIL ADDRESS:	
		STREET 1:		1031 MENDOTA HEIGHTS R
		CITY:			ST PAUL
		STATE:			MN
		ZIP:			55120
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd238803.xml
<DESCRIPTION>FM4RSA_03-31-2009
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-03-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000891024</issuerCik>
        <issuerName>PATTERSON COMPANIES, INC.</issuerName>
        <issuerTradingSymbol>PDCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001244028</rptOwnerCik>
            <rptOwnerName>ARMSTRONG R STEPHEN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PATTERSON COMPANIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1031 MENDOTA HEIGHTS RD.</rptOwnerStreet2>
            <rptOwnerCity>ST. PAUL</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55120</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-03-31</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>223</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>16.03</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>41313</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Employee Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>134992</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>134992</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Patterson Companies, Inc. Employee Stock Purchase Plan.</footnote>
        <footnote id="F2">Options granted are as follows: 98,700 on 07/01/1999 at $8.7032, 10,068 on 05/01/2000 at $12.1875, 8,806 on 04/30/2001 at $15.28, 6,200 on 04/29/2002 at $22.57, 7,288 on 04/28/2003 at $19.965 and 3,930 on 4/26/2004 at $38.50.</footnote>
        <footnote id="F3">Options are exercisable as follows: 14,100 on July 1 of each year 2002-2008; 10,068 on 5/01/2009; 8,806 on 4/30/2010; 6,200 on 4/29/2011, 7,288 on 04/28/2012, and 3,930 on 4/26/2013.</footnote>
        <footnote id="F4">All grants expire 10 years after grant date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Matthew L. Levitt, by Power of Attorney</signatureName>
        <signatureDate>2009-04-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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