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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 O1COlzPI7Mw57c1MTfoHh3idEskrEKyz+lvppa2MviiuTxk0hi+TDynzKenlSWQV
 sHU0XI+b7H79/jbHxsWIVg==

<SEC-DOCUMENT>0001476331-09-000001.txt : 20091110
<SEC-HEADER>0001476331-09-000001.hdr.sgml : 20091110
<ACCEPTANCE-DATETIME>20091110114223
ACCESSION NUMBER:		0001476331-09-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091109
FILED AS OF DATE:		20091110
DATE AS OF CHANGE:		20091110

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DIAMOND MANAGEMENT & TECHNOLOGY CONSULTANTS, INC.
		CENTRAL INDEX KEY:			0000924940
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
		IRS NUMBER:				364069408
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		875 NORTH MICHIGAN AVE SUITE 3000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60611
		BUSINESS PHONE:		3122555000

	MAIL ADDRESS:	
		STREET 1:		875 NORTH MICHIGAN AVE STE 3000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60611

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIAMONDCLUSTER INTERNATIONAL INC
		DATE OF NAME CHANGE:	20010731

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIAMOND TECHNOLOGY PARTNERS INC
		DATE OF NAME CHANGE:	19961212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GUTSTEIN ADAM J
		CENTRAL INDEX KEY:			0001224357
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22125
		FILM NUMBER:		091170914

	BUSINESS ADDRESS:	
		STREET 1:		875 NORTH MICHIGAN AVE SUITE 3000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60611
		BUSINESS PHONE:		3122555000

	MAIL ADDRESS:	
		STREET 1:		875 N. MICHIGAN AVE.
		STREET 2:		STE 3000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60611
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-11-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000924940</issuerCik>
        <issuerName>DIAMOND MANAGEMENT &amp; TECHNOLOGY CONSULTANTS, INC.</issuerName>
        <issuerTradingSymbol>DTPI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001224357</rptOwnerCik>
            <rptOwnerName>GUTSTEIN ADAM J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>875 N. MICHIGAN AVENUE, SUITE 3000</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60611</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-11-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1800</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>7.0066</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>528453</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This is an average price, purchases ranged from $7.00 to 7.05.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>By: Karen L. McLaughlin, as attorney in fact  For: Adam J. Gutstein</signatureName>
        <signatureDate>2009-11-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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