IRON MOUNTAIN INC — Director's Dealing 2016

Mar 28, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2016-03-21

Reporting Person: VERRECCHIA ALFRED J (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-03-21	Phantom Stock	$	A	320.1438	Acquired		Common Stock (320.1438)	Direct

Footnotes

F1: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan (the "Plan"), the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") following the Reporting Person's disability or cessation of service as a director. Each Phantom Share is the economic equivalent of one share of Common Stock.

F2: These shares give effect to dividends paid on Common Stock as if reinvested in Phantom Shares.

F3: The ending balance has been increased by 0.0008 Phantom Shares to reflect the correction of an administrative error by John Hancock Retirement Plan Services LLC, the record-keeper for the Plan.