FORM 5 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Form 3 Holdings Reported Form 4 Transactions Reported

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ANNUAL 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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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) Chairman of the Board & CEO (Last) (First) (Middle) 100 BELVEDERE STREET, APT. 9F 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year) 12/31/2006 (Street) BOSTON, MA 02199 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Reporting (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 at end of Issuer's Fiscal Year (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Amount (A) or (D) Price Common Stock, par value, $01.per share             1,052,097 (1) D   Common Stock, par value, $01.per share             1,222,086 (2) I Shares held in family owned LLC Common Stock, par value, $01.per share             2,950,588 (3) I By contract

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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SEC 2270 (9-02)

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 at End of Issuer's Fiscal Year (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

(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 BELVEDERE STREET APT. 9F BOSTON, MA 02199	  X	Â	  Chairman of the Board & CEO	Â

Signatures

C. Richard Reese		02/13/2007
**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 Common Stock of Iron Mountain Incorporated split, December 29, 2006 3-for-2 to record holders as of December 18, 2006, resulting in the reporting person's acquisition of 350,699 shares of Common Stock. Mr. Reese's directly owned shares include 966,552 shares subject to a zero collar arrangement with a third party to which Mr. Reese wrote covered call options and purchased put options that expire or are exercisable in July, August and September 2008, respectively.
(2)	The split on December 29, 2006 3-for-2 to record holders as of December 18, 2006, resulted in the reporting person's indirect ownership and additional 407,362 shares of Common Stock. Mr. Reese's wife and a trust for the benefit of Mr. Reese's children own all of the interests in the Reese Family 2005 LLC ("LLC"). Mr. Reese is the investment manager of the Reese Family 2005 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 or distributions. Mr. Reese disclaims beneficial ownership of all securities held by the Reese Family 2005 LLC 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. The 980 shares gifted by Mr. Reese to his children on December 15, 2005 were subsequently transferred to the LLC on 2/9/06.
(3)	The Common Stock of Iron Mountain Incorporated split, December 29, 2006 3-for-2 to record holders as of December 18, 2006, resulting in the reporting person's indirect ownership and additional 983,529 shares of Common Stock. Pursuant to a deferred compensation arrangement relating to Mr. Reese's former services as President of Schooner Capital Corporation ("Schooner"), upon the earlier to occur of (i) sale or exchange by Schooner Capital Trust of substantially all of the shares of Iron Mountain Incorporated Common Stock, par value $.01 per share ("Common Stock") held by Schooner Capital Trust and (ii) the cessation of Mr. Reese's employment with Iron Mountain Incorporated, Schooner Capital Trust is required to transfer such shares of Common Stock to Mr. Reese or cash in an amount equal to then current fair market value of such shares of Common Stock.

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