IRON MOUNTAIN INC — Director's Dealing 2017

Nov 1, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2017-10-30

Reporting Person: MacLean Theodore (EVP & Chief Marketing Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-10-30	Common Stock, par value $.01 per share	M	4226	—	Acquired	11716	Direct
2017-10-30	Common Stock, par value $.01 per share	F	1537	$39.95	Disposed	10179	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-10-30	Restricted Stock Units	$	M	4226	Disposed		Common Stock (4226)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on October 28, 2014.

F2: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F3: The RSUs, representing a contingent right to receive a total of 12,652 shares of Common Stock, were granted to the Reporting Person on October 28, 2014 and have vested in full.