IRON MOUNTAIN INC — Director's Dealing 2014

Mar 12, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2014-03-10

Reporting Person: Duale Marc A (President, Iron Mountain Int'l)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-03-10	Common Stock, par value $.01 per share	A	3804	—	Acquired	9742	Direct
2014-03-10	Common Stock, par value $.01 per share	F	133	$27.97	Disposed	9609	Direct
2014-03-11	Common Stock, par value $.01 per share	A	1176	—	Acquired	10785	Direct
2014-03-11	Common Stock, par value $.01 per share	F	41	$27.92	Disposed	10744	Direct
2014-03-11	Common Stock, par value $.01 per share	A	7788	—	Acquired	18532	Direct
2014-03-11	Common Stock, par value $.01 per share	F	272	$27.92	Disposed	18260	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-03-10	Restricted Stock Units	$	D	3804	Disposed		Common Stock (3804)	Direct
2014-03-11	Restricted Stock Units	$	D	1176	Disposed		Common Stock (1176)	Direct
2014-03-11	Performance Units	$	D	7788	Disposed		Common Stock (7788)	Direct
2014-03-10	Performance Units	$	A	8694	Acquired		Common Stock (8694)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 9, 2012.

F2: This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on March 11, 2011.

F3: This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 11, 2011.

F4: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F5: The RSUs, representing a contingent right to receive a total of 11,423 shares of Common Stock, were granted to the Reporting Person on March 9, 2012 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6: The RSUs, representing a contingent right to receive a total of 3,413 shares of Common Stock, were granted to the Reporting Person on March 11, 2011 and have vested in full in three substantially equal annual installments, the last of which was on March 11, 2014.

F7: Each PU represents a contingent right to receive one share of Common Stock.

F8: The PUs fully vested on March 11, 2014.

F9: The PUs were previously granted to the Reporting Person on March 15, 2013, and on March 10, 2014, 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.

F10: The PUs fully vest on March 15, 2016, subject to certain exceptions, if the Reporting Person is, as of that date, continuing to perform services for Iron Mountain Incorporated.