IRON MOUNTAIN INC — Director's Dealing 2015

Jun 1, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2015-05-28

Reporting Person: RAKOWICH WALTER C (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-05-28	Phantom Stock	$	A	3673	Acquired		Common Stock (3673)	Direct
2015-05-28	Phantom Stock	$	A	103.5	Acquired		Common Stock (103.5)	Direct
2015-05-28	Phantom Stock	$	A	225	Acquired		Common Stock (225)	Direct
2015-05-28	Phantom Stock	$	A	0.25	Acquired		Common Stock (0.25)	Direct
2015-05-28	Phantom Stock	$	A	0.1298	Acquired		Common Stock (0.1298)	Direct

Footnotes

F1: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan") with respect to certain restricted stock units ("RSUs") received on May 28, 2015, which RSUs vest on the grant date, the shares of phantom stock (the "Phantom Shares") will become payable in Iron Mountain Incorporated common stock on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of common stock.

F2: Pursuant to the Reporting Person's election to participate in the Plan, the Phantom Shares will become payable in shares of Iron Mountain Incorporated common stock on various dates selected by the Reporting Person or as otherwise provided in the Plan. Each Phantom Share is the economic equivalent of one share of common stock.

F3: These shares give effect to dividends paid on previously reported RSUs as if reinvested in Phantom Shares.