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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 X5FP4rZt9R/uc3Vm/Uw2Xg==

<SEC-DOCUMENT>0001202673-06-000001.txt : 20060213
<SEC-HEADER>0001202673-06-000001.hdr.sgml : 20060213
<ACCEPTANCE-DATETIME>20060213131200
ACCESSION NUMBER:		0001202673-06-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060210
FILED AS OF DATE:		20060213
DATE AS OF CHANGE:		20060213

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DALY JOHN J
		CENTRAL INDEX KEY:			0000026738

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-17501
		FILM NUMBER:		06602186

	BUSINESS ADDRESS:	
		STREET 1:		190 JONES ROAD
		CITY:			AMSTERDAM
		STATE:			NY
		ZIP:			12010

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CNB BANCORP INC /NY/
		CENTRAL INDEX KEY:			0000839928
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				141709485
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10-24 N MAIN ST
		STREET 2:		P O BOX 873
		CITY:			GLOVERSVILLE
		STATE:			NY
		ZIP:			12078
		BUSINESS PHONE:		5187737911

	MAIL ADDRESS:	
		STREET 1:		10-24 N MAIN ST
		STREET 2:		PO BOX 873
		CITY:			GLOVERSVILLE
		STATE:			NY
		ZIP:			12078
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-02-10</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000839928</issuerCik>
        <issuerName>CNB BANCORP INC /NY/</issuerName>
        <issuerTradingSymbol>CNBI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000026738</rptOwnerCik>
            <rptOwnerName>DALY JOHN J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1></rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>CNB Bancorp Inc</value>
            </securityTitle>
            <transactionDate>
                <value>2006-02-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>400</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Disposed of pursuant to the merger of CNB with and into NBT Bancorp, Inc. (&quot;NBT&quot;) (NASDAQ:  NBTB) on February 10, 2006. Under the terms of the merger agreement, CNB shareholders have the opportunity to elect to receive one of the following: $38.00 in cash for each share of CNB common stock; 1.64 shares of NBT common stock for each share of CNB common stock; or some combination of cash and NBT stock. The exact composition of consideration to be received depends upon a combination of the election made by the particular shareholder and a formula contained in the merger agreement. The merger agreement provides that NBT will issue stock for 55% of all CNB shares acquired and cash for all remaining CNB shares. On the effective date of the merger, shares of NBT common stock were trading for approximately $22.42 per share.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>John J Daly</signatureName>
        <signatureDate>2006-02-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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