IRON MOUNTAIN INC — Director's Dealing 2012

Mar 13, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2012-03-07

Reporting Person: REESE C RICHARD (Director, CEO and Executive Chairman)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-03-07	Performance Units	$	A	31869	Acquired		Common Stock (31869)	Direct
2012-03-09	Restricted Stock Units	$	A	77976	Acquired		Common Stock (77976)	Direct

Footnotes

F1: Each performance unit ("PU") represents a contingent right to receive one share of Iron Mountain Incorporated common stock.

F2: The PUs were previously granted to the reporting person on May 6, 2011, and on March 7, 2012 the Compensation Committee of Iron Mountain Incorporated's Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period.

F3: The PUs fully vest on May 6, 2014, subject to certain exceptions, if the officer is, as of that date, continuing to perform services for Iron Mountain Incorporated.

F4: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock.

F5: The RSUs vest in three annual installments beginning on the first anniversary of the date of grant.