IRON MOUNTAIN INC — Director's Dealing 2011

Jun 2, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2011-05-31

Reporting Person: DAUTEN KENT P (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-31	Common Stock, par value, $.01 per share	S	286399	$34.023	Disposed	2369862	Direct
2011-06-01	Common Stock, par value, $.01 per share	S	269862	$33.4919	Disposed	2100000	Direct
2011-06-01	Common Stock, par value, $.01 per share	G	100000	—	Disposed	2000000	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.99 to $34.11, 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 (1).

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.14 to $33.83, 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).