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) 10/18/2012 (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

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

Stock Option (Right to Buy)

$ 25.3112 (1)

10/18/2012

A(1)

8,469 (1)

(2)

06/04/2019

Common Stock

8,469 (1)

$ 0

79,015 (1)

D

Stock Option (Right to Buy)

$ 23.0435 (1)

10/18/2012

A(1)

6,977 (1)

(2)

03/05/2020

Common Stock

6,977 (1)

$ 0

65,094 (1)

D

Stock Option (Right to Buy)

$ 25.0925 (1)

10/18/2012

A(1)

8,253 (1)

(3)

03/11/2021

Common Stock

8,253 (1)

$ 0

77,000 (1)

D

Stock Option (Right to Buy)

$ 28.4226 (1)

10/18/2012

A(1)

6,042 (1)

(4)

05/06/2021

Common Stock

6,042 (1)

$ 0

56,373 (1)

D

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/ Ernest W. Cloutier, under Power of Attorney dated September 16, 2010 from C. Richard Reese		10/22/2012
**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)	This report reflects adjustments effective on October 18, 2012 approved by the Board of Directors of the issuer (the "Board") made in connection with a special dividend declared by the Board on October 11, 2012.
(2)	This option is fully vested.
(3)	This stock option vests in equal annual installments on March 11 of each year until 2014.
(4)	This stock option vests in equal annual installments on May 6 of each year until 2014.

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