IRON MOUNTAIN INC — Director's Dealing 2017

Jan 11, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2017-01-09

Reporting Person: Meaney William L (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-01-09	Common Stock, par value $.01 per share	M	17039	—	Acquired	54026	Direct
2017-01-09	Common Stock, par value $.01 per share	F	5711	$33.32	Disposed	48315	Direct
2017-01-10	Common Stock, par value $.01 per share	S	5664	$32.8176	Disposed	42651	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-01-09	Restricted Stock Units	$	M	17039	Disposed		Common Stock (17039)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on January 7, 2013.

F2: This transaction was effected pursuant to a 10b5-1 trading plan which was approved and became effective as of April 29, 2016.

F3: The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.756 to $32.865, inclusive. The Reporting Person undertakes to provide Iron Mountain Incorporated (the "Company"), any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (3).

F4: Each RSU represents a contingent right to receive one share of the Company's common stock ("Common Stock").

F5: The RSUs, representing a contingent right to receive a total of 68,158 shares of Common Stock, were granted to the Reporting Person on January 7, 2013 and vest 25% on the third anniversary of the grant date, 25% on the fourth anniversary of the grant date and 50% on the fifth anniversary of the grant date. 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 the Company on September 15, 2014 and paid on November 4, 2014.