<SEC-DOCUMENT>0000904454-14-000713.txt : 20141016
<SEC-HEADER>0000904454-14-000713.hdr.sgml : 20141016
<ACCEPTANCE-DATETIME>20141015205220
ACCESSION NUMBER:		0000904454-14-000713
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20141001
FILED AS OF DATE:		20141015
DATE AS OF CHANGE:		20141015

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMG Pantheon Private Equity Master Fund, LLC
		CENTRAL INDEX KEY:			0001609212
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		C/O ROPES & GRAY LLP
		STREET 2:		PRUDENTIAL TOWER, 800 BOYLSTON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		212-596-9335

	MAIL ADDRESS:	
		STREET 1:		C/O ROPES & GRAY LLP
		STREET 2:		PRUDENTIAL TOWER, 800 BOYLSTON STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			AFFILIATED MANAGERS GROUP, INC.
		CENTRAL INDEX KEY:			0001004434
		STANDARD INDUSTRIAL CLASSIFICATION:	INVESTMENT ADVICE [6282]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-22972
		FILM NUMBER:		141158671

	BUSINESS ADDRESS:	
		STREET 1:		600 HALE STREET
		STREET 2:		P.O. BOX 1000
		CITY:			PRIDES CROSSING
		STATE:			MA
		ZIP:			01965
		BUSINESS PHONE:		6177473300

	MAIL ADDRESS:	
		STREET 1:		600 HALE STREET
		STREET 2:		P.O. BOX 1000
		CITY:			PRIDES CROSSING
		STATE:			MA
		ZIP:			01965

	FORMER NAME:	
		FORMER CONFORMED NAME:	AFFILIATED MANAGERS GROUP INC
		DATE OF NAME CHANGE:	19970822
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2014-10-01</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001609212</issuerCik>
        <issuerName>AMG Pantheon Private Equity Master Fund, LLC</issuerName>
        <issuerTradingSymbol>N/A</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001004434</rptOwnerCik>
            <rptOwnerName>AFFILIATED MANAGERS GROUP, INC.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>600 HALE STREET, PO BOX 1000</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PRIDES CROSSING</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01965</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Units of beneficial interest</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>424000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Affiliated Managers Group, Inc. is the sole shareholder of HWL Holdings Corp. HWL Holdings Corp. is the sole member of AMG 2014 Capital LLC. AMG 2014 Capital LLC is a unit holder of AMG Pantheon Private Equity Master Fund, LLC.</footnote>
        <footnote id="F2">Information with respect to each of the Reporting Persons is given solely by such Reporting Persons, and no Reporting Person has responsibility for the accuracy or completeness of information supplied by another Reporting Person.</footnote>
    </footnotes>

    <remarks>Additional Reporting Owners: HWL Holdings Corp., 600 Hale Street, PO Box 1000, Prides Crossing, MA 0196 5. AMG 2014 Capital LLC, 600 Hale Street, PO Box 1000, Prides Crossing, MA 0196 5.</remarks>

    <ownerSignature>
        <signatureName>/s/ David M. Billings
Executive Vice President, General Counsel and Secretary</signatureName>
        <signatureDate>2014-10-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
