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

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * RYAN VINCENT J   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 _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 745 ATLANTIC AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 12/12/2006 (Street) BOSTON, MA 02111 4. If Amendment, Date Original Filed(Month/Day/Year) 12/14/2006 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 12/12/2006   M   8,288 A $ 12.0741 4,701,147 (1) I Shares held as part of the Vincent J. Ryan Revocable Trust, dated 12/24/87 Common Stock, par value, $.01 per share 12/12/2006   M   6,197 A $ 16.1389 4,707,344 (2) I Shares held as part of the Vincent J. Ryan Revocable Trust, dated 12/24/87 Common Stock, par value, $.01 per share               16,904 (3) I Shares held in the Carla E. Meyer Three-Year Annuity Trust, dated August 4, 2003 ("Meyer 2003 Trust) Common Stock, par value, $.01 per share               25,581 (4) I Shares held by a member of Mr. Ryan's household Common Stock, par value, $.01 per share               0 (5) I Shares held in the Carla E. Meyer Revocable Trust, dated December 7, 2001 ("Meyer 2001 Trust") Common Stock, par value, $.01 per share               323,220 (5) I Shares held in the Carla E. Meyer 2006 Three-Year Retained Annuity Trust dtd September 13, 2006 Common Stock, par value, $.01 per share               6,156,171 I Shares held by Schooner Capital Trust ("Schooner Trust") Common Stock, par value, $.01 per share               13,500 I Shared held in the name of Citibank, South Dakota, Trustee of the Ryan 1998 Issue Trust Common Stock, par value, $.01 per share               69,654 I Shared held by the Schooner Foundation

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 1474 (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 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)

$ 12.0741

12/12/2006

M

8,288

05/28/2001

05/27/2008

Common Stock

8,288

$ 12.0741

0

D

Stock Option (Right to Buy)

$ 16.1389

12/12/2006

M

6,197

05/28/2001

05/31/2010

Common Stock

6,197

$ 16.1389

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
RYAN VINCENT J 745 ATLANTIC AVENUE BOSTON, MA 02111	X

Signatures

Clare A. Dever, under Power of Attorney dated September 3, 2002 from Vincent J. Ryan.		12/15/2006
**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)	Mr. Ryan has exercised 8,288 shares of the NQ stock option granted to him on 5/28/98. There are no further shares remaining to the exercised with this option grant.
(2)	Mr. Ryan has exercised 6,197 shares of the NQ stock option granted to him on 6/1/00. There are no further shares remaining to the exercised with this option grant.
(3)	On August 4, 2006, the Carla E. Meyer Three-Year Retained Annuity Trust transferred 115,007 shares of Iron Mountain Common Stock to The Carla E. Meyer Revocable Trust, dated December 7, 2001 and 109,876 shares to members of the Ryan family, including 84,520 shares transferred to family members who do not live in the Ryan household. As to the 84,520 shares, Mr. Ryan disclaims beneficial ownership.
(4)	Of the 109,876 shares of Iron Mountain Common Stock referenced above, 25,356 shares are held by a member of the family who lives within the Ryan household, as to which Mr. Ryan disclaims beneficial ownership. Included in the reported shares of 25,581 are 225 shares as adjusted for the 3-for-2 Stock split effective June 30, 2004 purchased by such family member on 5/14/04 for a total of $6,506 that were inadvertently not reported previously.
(5)	On September 13, 2006, the Carla E. Meyer Revocable Trust dated December 7, 2001 transferred 323,220 shares of Iron Mountain Common Stock to the Carla E. Meyer 2006 Three-Year Retained Annuity Trust, dated September 13, 2006.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.