Ownership Submission
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/PA [(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)
12/31/2004
(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 12/15/2004   G 2,160 D $ 0 1,476,868 (1) D  
Common Stock, par value, $.01 per share             63,744 (2) I In trust for children sharing household
Common Stock, par value, $.01 per share             1,967,059 (3) I By contract

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. 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     Chairman of the Board & CEO  

Signatures

C. Richard Reese 02/04/2005
**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) Gift of 1,440 shares to trust for the benefit of the reporting person's children and a gift of 720 shares to a trust for the benefit of the reporting person's brother.
(2) This total reflects a decrease of 1,715 shares that were previously reported in error on 9/7/04. The reporting person disclaims beneficial ownership of all securities held in trust for the benefit of his children, 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 Securities and Exchange Act of 1934, as amended, or for any other purpose.
(3) 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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