IRON MOUNTAIN INC — Director's Dealing 2010

May 10, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2010-05-06

Reporting Person: BODEN CONSTANTIN R (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-06	Common Stock, par value, $.01 per share	M	9295	$10.759	Acquired	100784	Direct
2010-05-06	Common Stock, par value, $.01 per share	S	9295	$23.000	Disposed	91489	Direct
2010-05-06	Common Stock, par value, $.01 per share	M	16416	$12.184	Acquired	107905	Direct
2010-05-06	Common Stock, par value, $.01 per share	S	16416	$23.002	Disposed	91489	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-06	Stock Option (right to buy)	$10.759	M	9295	Disposed	2010-05-31	Common Stock (9295)	Direct
2010-05-06	Stock Option (right to buy)	$12.184	M	16416	Disposed	2011-05-31	Common Stock (16416)	Direct

Footnotes

F1: This transaction was executed in multiple trades at prices ranging from $23.00 to $23.03. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

F2: This transaction was executed in multiple trades at prices ranging from $23.00 to $23.04. The price reported above reflects the weighted-average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

F3: This option is fully vested.

F4: This option is fully vested.