8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of
The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 20, 2011

IRON MOUNTAIN INCORPORATED

(Exact name of registrant as specified in its charter)

DELAWARE

(State or other jurisdiction of incorporation)

1-13045	23-2588479
(Commission File Number)	(IRS Employer Identification No.)

745 Atlantic Avenue
Boston, Massachusetts 02111
(Address of principal executive offices, including zip code)

(617) 535-4766
(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2.):

o    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (7 CFR 240.13e-4(c))

Item 8.01.  Other Events.

Public Offering

On September 20, 2011, Iron Mountain Incorporated (the “Company”) issued a press release announcing a proposed public offering of $300 million in aggregate principal amount of its Senior Subordinated Notes due 2019. A copy of the Company’s press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

Item 9.01.  Financial Statements and Exhibits.

(d)  Exhibits

99.1 Press Release of Iron Mountain Incorporated, dated September 20, 2011. (Filed herewith.)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	IRON MOUNTAIN INCORPORATED
	By:	/s/ Ernest W. Cloutier
		Ernest W. Cloutier
		Executive Vice President, General Counsel and Secretary
Date: September 20, 2011

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EX-99.1

Exhibit 99.1

Investor Relations contact:

Stephen P. Golden

Vice President, Investor Relations

sgolden@ironmountain.com

(617) 535-4766

FOR IMMEDIATE RELEASE

Iron Mountain Incorporated Announces $300 Million Debt Offering

Boston—September 20, 2011—Iron Mountain Incorporated (NYSE: IRM) announced today a proposed public offering of $300 million in aggregate principal amount of Senior Subordinated Notes due 2019.  The Company intends to use the net proceeds from the offering for general corporate purposes, including funding a portion of its shareholder payout commitments and possible future acquisitions and investments.   The exact terms and timing of the offering will depend upon market conditions and other factors.

J.P. Morgan Securities LLC, Morgan Stanley & Co. LLC, Barclays Capital Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated, HSBC Securities (USA) Inc., RBS Securities Inc. and Scotia Capital (USA) Inc. are joint book-running managers for the offering.

Iron Mountain Incorporated is making the offering under a shelf registration statement previously declared effective by the Securities and Exchange Commission.  This offering will be made solely by means of a prospectus.  A copy of the prospectus supplement and related base prospectus for the offering may be obtained on the SEC Web site at www.sec.gov.  Alternatively, the underwriters will arrange to send you the prospectus supplement and related base prospectus if you request them by contacting (800) 245-8812.

This announcement shall not constitute an offer to sell or the solicitation of an offer to buy securities, nor shall there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Iron Mountain

Iron Mountain Incorporated (NYSE: IRM) provides information management services that help organizations lower the costs, risks and inefficiencies of managing their physical and digital data. The Company’s solutions enable customers to protect and better use their information—regardless of its format, location or lifecycle stage—so they can optimize their business and ensure proper recovery, compliance and discovery. Founded in 1951, Iron Mountain manages billions of information assets, including business records, electronic files, medical data, emails and more for organizations around the world. Visit www.ironmountain.com for more information.

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