Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
REESE C RICHARD
   2. Issuer Name and Ticker or Trading Symbol
IRON MOUNTAIN INC [IRM] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CEO & Executive Chairman
(Last)
(First)
(Middle)
100 BELVIDERE STREET, APARTMENT 9F		 3. Date of Earliest Transaction (Month/Day/Year)
08/12/2011
(Street)

BOSTON, MA 02199		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock, par value, $.01 per share 08/12/2011   S   257,300 D $ 31.09 (1) 340,400 D  
Common Stock, par value, $.01 per share 08/12/2011   P   257,300 A $ 31.09 (1) 257,300 I See Footnote (2)
Common Stock, par value, $.01 per share               1,222,086 I See Footnote (3)
Common Stock, par value, $.01 per share               2,950,590 (4) I By Contract

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
REESE C RICHARD
100 BELVIDERE STREET
APARTMENT 9F
BOSTON, MA 02199		   X     CEO & Executive Chairman  

Signatures

 /s/ Sarah Cammarata, under Power of Attorney dated September 16, 2010 from C. Richard Reese   08/16/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The price reported in Column 4 is calculated pursuant to a Purchase and Sale Agreement between Mr. Reese and the Reese 2010 Trust, which such trust is dated December 8, 2010 (the "GST Trust"), and is based on the average high and low sale price of one share of common stock of Iron Mountain Incorporated as quoted on the New York Stock Exchange on August 12, 2011.
(2) These shares are held by the GST Trust. As part of Mr. Reese's estate planning, Mr. Reese exchanged 257,300 shares of common stock of Iron Mountain Incorporated ("IRM Common Stock"), together with $543, for a promissory note issued by the GST Trust payable to Mr. Reese (with an aggregate principal amount of $8,000,000, a term of nine (9) years and an interest rate of 1.9%). The trustee of the GST Trust is an unrelated trust company. The GST Trust is for the benefit of Mr. and Mrs. Reese's descendants. Mr. Reese holds investment and distribution powers over the trust but does not have the right to revoke the GST Trust. Mr. Reese disclaims beneficial ownership of the GST Trust, and this report should not be deemed an admission that the reporting person is beneficial owner of such securities for the purposes of Section 16 of the Exchange Act of 1934, as amended, or for any purpose.
(3) These shares are held by the Reese Family 2005 LLC (the "LLC"). Four trusts for the benefit of Mr. Reese's children and their descendants, and one of his children (the "Existing Trusts"), own all of the interests in the LLC. Mr. Reese is the investment manager of the LLC and therefore has control over the sale or distribution of any shares held by the LLC, the timing of such sales or distributions, and the use of the proceeds of any sale. Mr. Reese disclaims beneficial ownership of all securities held by the LLC or by the Existing Trusts, and this report should not be deemed an admission that the reporting person is beneficial owner of such securities for purposes of Section 16 of the Exchange Act of 1934, as amended, or for any purpose.
(4) Mr. Reese shares beneficial ownership of these shares with Schooner Capital Corporation as a result of a 1988 deferred compensation arrangement, as amended, between Schooner Capital LLC ("Schooner") and Mr. Reese relating to Mr. Reese's former services as President of the predecessor corporation to Schooner. Pursuant to such arrangement, Mr. Reese is entitled to receive benefits equivalent to the fair market value of such shares with payments to Mr. Reese commencing on the first business day of 2013 and payable in ten annual installments; however, Mr. Reese has the right to defer the commencement of such installments in certain circumstances. In addition, any unpaid benefits pursuant to this arrangement shall be payable to Mr. Reese's beneficiary(ies) in a lump sum upon his death. Benefits pursuant to this arrangement are payable in cash or, at Mr. Reese's election, common stock.

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