<SEC-DOCUMENT>0001308179-23-000453-index.html : 20230330
<SEC-HEADER>0001308179-23-000453.hdr.sgml : 20230330
<ACCEPTANCE-DATETIME>20230330161710
ACCESSION NUMBER:		0001308179-23-000453
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		9
FILED AS OF DATE:		20230330
DATE AS OF CHANGE:		20230330

FILER:

	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

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13045
		FILM NUMBER:		23780914

	BUSINESS ADDRESS:	
		STREET 1:		85 NEW HAMPSHIRE AVENUE, SUITE 150
		STREET 2:		PEASE INTERNATIONAL TRADEPORT
		CITY:			PORTSMOUTH
		STATE:			NH
		ZIP:			03801
		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>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>irm4112791-defa14a.htm
<DESCRIPTION>DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS
<TEXT>
Document 1 - file: irm4112791-defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>irm4112791-defa14alogo.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: irm4112791-defa14alogo.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>irm4112791-defa14ax1x1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: irm4112791-defa14ax1x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>irm4112791-defa14ax1x2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: irm4112791-defa14ax1x2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>irm4112791-defa14ax1x3.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: irm4112791-defa14ax1x3.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>irm4112791-defa14ax1x4.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: irm4112791-defa14ax1x4.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>irm4112791-defa14ax1x5.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: irm4112791-defa14ax1x5.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>irm4112791-defa14ax1x6.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: irm4112791-defa14ax1x6.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>irm4112791-defa14ax1x7.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: irm4112791-defa14ax1x7.jpg

</DOCUMENT>
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