-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 TSCmBGlVXmIThYmeNGBo03VhtgJE9sBwaq6YWE399kBL+c8ZDRF8Go8Wxe1+S+sc
 VXgzMaxhr7ZbkfbNaeT+QQ==

<SEC-DOCUMENT>0001096803-08-000005.txt : 20081219
<SEC-HEADER>0001096803-08-000005.hdr.sgml : 20081219
<ACCEPTANCE-DATETIME>20081219112548
ACCESSION NUMBER:		0001096803-08-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20081218
FILED AS OF DATE:		20081219
DATE AS OF CHANGE:		20081219

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CHYMIAK SUSAN C
		CENTRAL INDEX KEY:			0001096803

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10799
		FILM NUMBER:		081259553

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		9182519121

	MAIL ADDRESS:	
		STREET 1:		C/O ADDVANTAGE TECHNOLOGIES GROUP INC
		STREET 2:		1605 E IOLA
		CITY:			BROKEN ARROW
		STATE:			OK
		ZIP:			74012

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ADDVANTAGE TECHNOLOGIES GROUP INC
		CENTRAL INDEX KEY:			0000874292
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-DURABLE GOODS [5000]
		IRS NUMBER:				731351610
		STATE OF INCORPORATION:			OK
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		1221 E. HOUSTON
		CITY:			BROKEN ARROW
		STATE:			OK
		ZIP:			74012
		BUSINESS PHONE:		9182519121

	MAIL ADDRESS:	
		STREET 1:		1605 E IOLA
		CITY:			BROKEN ARROW
		STATE:			OK
		ZIP:			74012

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ADDVANTAGE MEDIA GROUP INC /OK
		DATE OF NAME CHANGE:	19930328
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-12-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000874292</issuerCik>
        <issuerName>ADDVANTAGE TECHNOLOGIES GROUP INC</issuerName>
        <issuerTradingSymbol>aey</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001096803</rptOwnerCik>
            <rptOwnerName>CHYMIAK SUSAN C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ADDVANTAGE TECHNOLOGIES GROUP INC</rptOwnerStreet1>
            <rptOwnerStreet2>1221 E. HOUSTON ST.</rptOwnerStreet2>
            <rptOwnerCity>BROKEN ARROW</rptOwnerCity>
            <rptOwnerState>OK</rptOwnerState>
            <rptOwnerZipCode>74012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F2"/>
                <footnoteId id="F4"/>
            </securityTitle>
            <transactionDate>
                <value>2008-12-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20350</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.05</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>76024.75</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Chymiak Investment LLC</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F3"/>
            </securityTitle>
            <transactionDate>
                <value>2008-12-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20350</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.05</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>76024.75</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By spouse's ownership in Chymiak Investment LLC</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>250000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By spouse's Revocable Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1796000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Susan Chymiak Revocable Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F5"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2337</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Beneficial ownership of spouse's shares is disclaimed.</footnote>
        <footnote id="F2">Susan Chymiak holds 25% ownership of Chymiak Investment LLC.  Shares acquired by Chymiak Investment LLC on 12/18/2008 totaled 81,400.</footnote>
        <footnote id="F3">Spouse, Kenneth Chymiak, holds 25% ownership in Chymiak Investment LLC.  Shares acquired by Chymiak Investment LLC totaled 81,400 on 12/18/08.  These shares are indirectly owned by Susan C. Chymiak as spouse.</footnote>
        <footnote id="F4">Chymiak Investment LLC acquired 81,400 shares on 12/18/2008 through multiple purchases in the open market.  The weighted average price of these purchases was $2.05.</footnote>
        <footnote id="F5">One year holding restriction on sale expiring 3/5/09.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Susan C. Chymiak</signatureName>
        <signatureDate>2008-12-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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