IRON MOUNTAIN INC — Director's Dealing 2011

Aug 31, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2011-08-30

Reporting Person: LAMACH MICHAEL W (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-08-30	Common Stock, par value, $.01 per share	M	12611	$23.745	Acquired	15720	Direct
2011-08-30	Common Stock, par value, $.01 per share	S	12611	$32.3583	Disposed	3109	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-08-30	Stock Option (Right to Buy)	$23.745	M	12611	Disposed	2020-06-04	Common Stock (12611)	Direct

Footnotes

F1: Includes 3,109 shares issuable upon the settlement of restricted stock units granted on June 10, 2011. The restricted stock units vest on the one year anniversary of the grant date (or, if earlier, the annual meeting of stockholders that is closest to the one year anniversary)

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.30 to $32.42, inclusive. The reporting person undertakes to provide to Iron Mountain Incorporated, any security holder of Iron Mountain Incorporated, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (2).

F3: This option is fully vested.