-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 +YwFg1WcsoemsPhuAWFrvg==

<SEC-DOCUMENT>0001005477-03-004086.txt : 20031014
<SEC-HEADER>0001005477-03-004086.hdr.sgml : 20031013
<ACCEPTANCE-DATETIME>20031014151630
ACCESSION NUMBER:		0001005477-03-004086
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031010
FILED AS OF DATE:		20031014

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LEE HELEN HEYOUNG
		CENTRAL INDEX KEY:			0001166977

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31227
		FILM NUMBER:		03939149

	BUSINESS ADDRESS:	
		STREET 1:		1080 WISCONSIN AVE APT 201W
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20007

	MAIL ADDRESS:	
		STREET 1:		1080 WISCONSIN AVE APT 201
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20007

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COGENT COMMUNICATIONS GROUP INC
		CENTRAL INDEX KEY:			0001158324
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				522337274

	BUSINESS ADDRESS:	
		STREET 1:		1015 31ST STREET
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20007
		BUSINESS PHONE:		2022954200
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar123.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
    <periodOfReport>2003-10-10</periodOfReport>
    <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0001158324</issuerCik>
        <issuerName>COGENT COMMUNICATIONS GROUP INC</issuerName>
        <issuerTradingSymbol>COI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>

        <reportingOwnerId>
            <rptOwnerCik>0001166977</rptOwnerCik>
            <rptOwnerName>LEE HELEN HEYOUNG</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1015 31ST ST., NW</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WASHINGTON</rptOwnerCity>
            <rptOwnerState>DC</rptOwnerState>
            <rptOwnerZipCode>20007</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
        <isDirector>1</isDirector>
        <isOfficer>1</isOfficer>
        <isTenPercentOwner>0</isTenPercentOwner>
        <isOther>0</isOther>
        <officerTitle>CFO</officerTitle>
    </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>

        <securityTitle>
            <value>Common Stock</value>
        </securityTitle>

        <transactionDate>
            <value>2003-10-10</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F4"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>800</value>
            </transactionShares>

            <transactionPricePerShare>
                <value>0</value>
                <footnoteId id="F4"/>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>0</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </nonDerivativeTransaction>

    </nonDerivativeTable>
    <derivativeTable>
        <derivativeTransaction>

        <securityTitle>
            <value>Option/right to buy</value>
            <footnoteId id="F1"/>
        </securityTitle>

        <conversionOrExercisePrice>
            <value>0.10</value>
        </conversionOrExercisePrice>

        <transactionDate>
            <value>2003-10-10</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F2"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>1600</value>
            </transactionShares>

            <transactionPricePerShare>
                <value>0</value>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>

        <exerciseDate>
            <value>2001-02-08</value>
        </exerciseDate>

        <expirationDate>
            <value>2010-02-08</value>
        </expirationDate>
        <underlyingSecurity>

            <underlyingSecurityTitle>
                <value>Common Stock</value>
            </underlyingSecurityTitle>

            <underlyingSecurityShares>
                <value>1600</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>0</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </derivativeTransaction>

        <derivativeTransaction>

        <securityTitle>
            <value>Option/right to buy</value>
            <footnoteId id="F1"/>
        </securityTitle>

        <conversionOrExercisePrice>
            <value>15.00</value>
        </conversionOrExercisePrice>

        <transactionDate>
            <value>2003-10-10</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F2"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>41666</value>
            </transactionShares>

            <transactionPricePerShare>
                <value>0</value>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>

        <exerciseDate>
            <value>2000-11-10</value>
        </exerciseDate>

        <expirationDate>
            <value>2010-11-20</value>
        </expirationDate>
        <underlyingSecurity>

            <underlyingSecurityTitle>
                <value>Common Stock</value>
            </underlyingSecurityTitle>

            <underlyingSecurityShares>
                <value>41666</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>0</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </derivativeTransaction>

        <derivativeTransaction>

        <securityTitle>
            <value>Option/right to buy</value>
            <footnoteId id="F1"/>
        </securityTitle>

        <conversionOrExercisePrice>
            <value>2.00</value>
        </conversionOrExercisePrice>

        <transactionDate>
            <value>2003-10-10</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F2"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>100000</value>
            </transactionShares>

            <transactionPricePerShare>
                <value>0</value>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>D</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>

        <exerciseDate>
            <value>2001-12-01</value>
        </exerciseDate>

        <expirationDate>
            <value>2011-12-01</value>
        </expirationDate>
        <underlyingSecurity>

            <underlyingSecurityTitle>
                <value>Common Stock</value>
            </underlyingSecurityTitle>

            <underlyingSecurityShares>
                <value>100000</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>0</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </derivativeTransaction>

        <derivativeTransaction>

        <securityTitle>
            <value>Series H Convertible Preferred Stock</value>
        </securityTitle>

        <conversionOrExercisePrice>
            <value>0</value>
            <footnoteId id="F3"/>
        </conversionOrExercisePrice>

        <transactionDate>
            <value>2003-10-10</value>
        </transactionDate>
    <transactionCoding>
        <transactionFormType>4</transactionFormType>
        <transactionCode>J</transactionCode>
        <equitySwapInvolved>0</equitySwapInvolved>
        <footnoteId id="F2"/>
    </transactionCoding>
        <transactionAmounts>

            <transactionShares>
                <value>5401</value>
            </transactionShares>

            <transactionPricePerShare>
                <footnoteId id="F5"/>
            </transactionPricePerShare>

            <transactionAcquiredDisposedCode>
                <value>A</value>
            </transactionAcquiredDisposedCode>
        </transactionAmounts>

        <exerciseDate>
            <value>2003-10-10</value>
            <footnoteId id="F4"/>
        </exerciseDate>

        <expirationDate>
            <footnoteId id="F4"/>
        </expirationDate>
        <underlyingSecurity>

            <underlyingSecurityTitle>
                <value>Common Stock</value>
            </underlyingSecurityTitle>

            <underlyingSecurityShares>
                <value>4154615</value>
            </underlyingSecurityShares>
        </underlyingSecurity>
        <postTransactionAmounts>

            <sharesOwnedFollowingTransaction>
                <value>5401</value>
            </sharesOwnedFollowingTransaction>
        </postTransactionAmounts>
        <ownershipNature>

            <directOrIndirectOwnership>
                <value>D</value>
            </directOrIndirectOwnership>
        </ownershipNature>
        </derivativeTransaction>

    </derivativeTable>
    <footnotes>
        <footnote id="F1">These options refer to unexercised rights to purchase common stock that were granted under the Amended and Restated Cogent Communications Group 2002 Equity Incentive Plan (the "Equity Incentive Plan").</footnote>
        <footnote id="F2">Options disposed of were exchanged for restricted shares of Series H Preferred Stock acquired in connection with a tender offer by Cogent Communications Group, Inc. described in Schedule TO filed on September 11, 2003 and amended on October 2, 2003 (file No. 005-78106).</footnote>
        <footnote id="F3">Each share of Series H Convertible Preferred Stock is convertible into 769.2307692 shares of common stock.</footnote>
        <footnote id="F4">Effective October 10, 2003, Ms. Lee elected to exchange all of her unexercised stock option grants and the common stock then owned by her for 5,401 shares of Series H Convertible Preferred Stock, which are subject to certain vesting provisions.  There is no expiration date on conversion of the Series H Convertible Preferred Stock into common stock.</footnote>
        <footnote id="F5">In consideration for restricted shares of Series H Convertible Preferred Stock, all rights to purchase common stock that were granted under the Equity Incentive Plan were exchanged.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>H. Helen Lee</signatureName>
        <signatureDate>2003-10-13</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----