IRON MOUNTAIN INC — Director's Dealing 2014

May 20, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2014-05-16

Reporting Person: BAILEY CLARK H (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-05-16	Common Stock, par value $.01 per share	M	11419	$17.515	Acquired	148106	Direct
2014-05-16	Common Stock, par value $.01 per share	F	6737	$29.79	Disposed	141369	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-05-16	Employee Stock Option (Right to Buy)	$17.515	M	11419	Acquired	2014-05-26	Common Stock (11419)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $.01 per share	23572	Indirect
Common Stock, par value $.01 per share	23572	Indirect

Footnotes

F1: Shares held by the Clarke H. Bailey GST Trust for the benefit of Trent S. Bailey.

F2: Shares held by the Clarke H. Bailey GST Trust for the benefit of Turner H. Bailey.

F3: This option is fully vested.