IRON MOUNTAIN INC — Director's Dealing 2015

Dec 16, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2015-12-14

Reporting Person: Tomovcsik John (EVP, G. Mgr., Rec. & Inf. Mgmt)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-12-14	Common Stock, par value $.01 per share	M	3499	—	Acquired	31898	Direct
2015-12-14	Common Stock, par value $.01 per share	F	1577	$26.45	Disposed	30321	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-12-14	Restricted Stock Units	$	M	3499	Disposed		Common Stock (3499)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on December 13, 2012.

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 10,213 shares of Common Stock, were granted to the Reporting Person on December 13, 2012 and have vested in three substantially equal annual installments, the last of which was on December 14, 2015. The number of RSUs granted includes previously reported RSUs allocated on November 4, 2014 in connection with the special distribution declared by the Board of Directors of Iron Mountain Incorporated on September 15, 2014 and paid on November 4, 2014.