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 *
KENNY JOHN F JR
 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)
CFO & Executive VP
(Last)
(First)
(Middle)

8 BREWER WAY		 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2006
(Street)


HINGHAM, MA 02043		 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             36,020 (1) I Shares held in the name of wife, son and daughter
Common Stock, par value, $01.per share             153,237 (2) D  

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
Employee Stock Option (Right to Buy) $ 18.5866 (3) 12/29/2006   J 5,379     (4) 04/26/2015 Common Stock
16,137
$ 0 16,137
D
 
Employee Stock Option (Right to Buy) $ 18.5866 (5) 12/29/2006   J 12,555     (6) 04/26/2015 Common Stock
37,665
$ 0 37,665
D
 
Employee Stock Option (Right to Buy) $ 17.066 (7) 12/29/2006   J 1,953     (8) 03/26/2013 Common Stock
5,859
$ 0 5,859
D
 
Employee Stock Option (Right to Buy) $ 17.0666 (9) 12/29/2006   J 2,929     (10) 03/26/2013 Common Stock
8,788
$ 0 8,788
D
 
Employee Stock Option (Right to Buy) $ 2.4847 (11) 12/29/2006   J 19,911     (12) 01/01/2050(13) Common Stock
59,733
$ 0 59,733
D
 
Employee Stock Option (Right to Buy) $ 9.9629 (14) 12/29/2006   J 10,034     (15) 09/12/2009 Common Stock
30,103
$ 0 30,103
D
 
Employee Stock Option (Right to Buy) $ 9.9629 (16) 12/29/2006   J 20,077     (17) 09/12/2009 Common Stock
60,231
$ 0 60,231
D
 
Employee Stock Option (Right to Buy) $ 12.7852 12/29/2006   J 5,213     (18) 11/28/2011 Common Stock
15,640
$ 0 15,640
D
 
Employee Stock Option (Right to Buy) $ 12.7852 12/29/2006   J 51,037     (19) 11/28/2011 Common Stock
153,111
$ 0 153,111
D
 
Employee Stock Option (Right to Buy) $ 6.2716 12/29/2006   J 68,051     (20) 07/30/2007 Common Stock
204,154
$ 0 204,154
D
 

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
KENNY JOHN F JR
8 BREWER WAY
HINGHAM, MA 02043		   X     CFO & Executive VP  

Signatures

John F. Kenny, Jr. 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 an increase in the indirect ownership of the reporting person of 12,006 shares of Common Stock. Mr. Kenny reports the following shares included in beneficial ownership: 33,628 shares held indirectly in the name of his wife, 1,567 shares held indirectly in the name of this minor son an 825 shares held indirectly in the name of his minor daughter.
(2) 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 51,079 shares of Common Stock.
(3) Due to software limitations, the post stock split exercise price should be $18.5866667.
(4) This stock option was previously reported as covering 10,758 shares at an exercise price of $27.88 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. There are no shares that are vested.
(5) Due to software limitations, the post stock split exercise price should be $18.5866667.
(6) This stock option was previously reported as covering 25,110 shares at an exercise price of $27.88 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. There are 10,759 shares that are vested.
(7) Due to software limitations, the post stock split exercise price should be $17.0666667.
(8) This stock option was previously reported as covering 3,906 shares at an exercise price of $25.60 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. There are no shares vested.
(9) Due to software limitations, the post stock split exercise price should be $17.0666667.
(10) This stock option was previously reported as covering 5,859 shares at an exercise price of $25.60 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. All shares are vested.
(11) Due to software limitations, the post stock split exercise price should be $2.4847333.
(12) This stock option was previously reported as covering 39,822 shares at an exercise price of $3.7271 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. All shares are vested.
(13) There is no expiration date for this Stock Option and thus a fictitious date of "1/1/2050" has been used in "Expiration Date", column 6.
(14) Due to software limitations, the post stock split exercise price should be $9.9629333.
(15) This stock option was previously reported as covering 20,069 shares at an exercise price of $14.9444 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. All shares are vested.
(16) Due to software limitations, the post stock split exercise price should be $9.9629333.
(17) This stock option was previously reported as covering 40,154 shares at an exercise price of $14.9444 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. All shares are vested.
(18) This stock option was previously reported as covering 10,427 shares at an exercise price of $19.1778 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. All shares are vested.
(19) This stock option was previously reported as covering 102,074 shares at an exercise price of $19.1778 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. All shares are vested.
(20) This stock option was previously reported as covering 136,103 shares at an exercise price of $9.4074 per share, but adjusted to reflect a 3-for-2 stock split effective December 29, 2006. All shares are vested.

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