<SEC-DOCUMENT>0001104659-18-035185.txt : 20180522
<SEC-HEADER>0001104659-18-035185.hdr.sgml : 20180522
<ACCEPTANCE-DATETIME>20180522210140
ACCESSION NUMBER:		0001104659-18-035185
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180216
FILED AS OF DATE:		20180522
DATE AS OF CHANGE:		20180522

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Keddy Patrick J
		CENTRAL INDEX KEY:			0001346840

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13045
		FILM NUMBER:		18853840

	MAIL ADDRESS:	
		STREET 1:		ONE ELMCROFT ROAD
		CITY:			STAMFORD
		STATE:			CT
		ZIP:			06926

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IRON MOUNTAIN INC
		CENTRAL INDEX KEY:			0001020569
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				232588479
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		ONE FEDERAL STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		617-535-4781

	MAIL ADDRESS:	
		STREET 1:		ONE FEDERAL STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IRON MOUNTAIN INC/PA
		DATE OF NAME CHANGE:	20000201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIERCE LEAHY CORP
		DATE OF NAME CHANGE:	19960807
</SEC-HEADER>
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<SEQUENCE>1
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        <issuerTradingSymbol>IRM</issuerTradingSymbol>
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            <rptOwnerName>Keddy Patrick J</rptOwnerName>
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            <rptOwnerStreet2>ONE FEDERAL STREET</rptOwnerStreet2>
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            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02110</rptOwnerZipCode>
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            <officerTitle>EVP, GM, N. America, W.Europe</officerTitle>
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    <footnotes>
        <footnote id="F1">This transaction is being reported to reflect the full vesting of performance units (&quot;PUs&quot;) initially granted to the Reporting Person on February 19, 2015. Effective February 16, 2018, the Compensation Committee of Iron Mountain Incorporated's Board of Directors (the &quot;Compensation Committee&quot;) determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs vested on February 20, 2018.</footnote>
        <footnote id="F2">This amendment is being filed to correct a clerical error in the number of shares withheld to satisfy the Reporting Person's tax obligation with respect to the vesting of PUs and restricted stock units (&quot;RSUs&quot;).</footnote>
        <footnote id="F3">This transaction is being reported to reflect the full vesting of PUs initially granted to the Reporting Person on May 27, 2015. Effective February 16, 2018, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs vested on February 20, 2018.</footnote>
        <footnote id="F4">This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on February 19, 2015.</footnote>
        <footnote id="F5">This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on February 18, 2016.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Elizabeth Tammaro, under Power of Attorney dated May 26, 2016, from Patrick Keddy</signatureName>
        <signatureDate>2018-05-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
