IRON MOUNTAIN INC — Director's Dealing 2018

May 22, 2018

SEC Form 4/A — Form 4/A

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2018-02-15

Reporting Person: Keddy Patrick J (EVP, GM, N. America, W.Europe)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-16	Common Stock, par value $.01 per share	M	2159	—	Acquired	14747	Direct
2018-02-16	Common Stock, par value $.01 per share	F	1014	$33.17	Disposed	13733	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on February 16, 2017.

F2: This amendment is being filed to correct a clerical error in the number of shares withheld to satisfy the Reporting Person's tax obligation with respect to the vesting of RSUs.