IRON MOUNTAIN INC — Director's Dealing 2014

Sep 10, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2014-09-08

Reporting Person: Tsolakis Anastasios (EVP, CIO, Global Svcs. Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-09-08	Common Stock, par value $.01 per share	S	1889	$36.10	Disposed	32325	Direct
2014-09-08	Common Stock, par value $.01 per share	S	5400	$36.11	Disposed	26925	Direct
2014-09-08	Common Stock, par value $.01 per share	A	2530	—	Acquired	29455	Direct
2014-09-08	Common Stock, par value $.01 per share	F	823	$36.53	Disposed	28632	Direct
2014-09-08	Common Stock, par value $.01 per share	M	10886	$18.374	Acquired	39518	Direct
2014-09-08	Common Stock, par value $.01 per share	S	5537	$36.12	Disposed	33981	Direct
2014-09-08	Common Stock, par value $.01 per share	M	15000	$18.374	Acquired	48981	Direct
2014-09-08	Common Stock, par value $.01 per share	S	15000	$36.107	Disposed	33981	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-09-08	Restricted Stock Units	$	D	2530	Disposed		Common Stock (2530)	Direct
2014-09-08	Employee Stock Option (Right to Buy)	$18.374	M	10886	Disposed	2020-09-15	Common Stock (10886)	Direct
2014-09-08	Employee Stock Option (Right to Buy)	$18.374	M	15000	Disposed	2020-09-15	Common Stock (15000)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on September 8, 2011.

F2: This transaction is reported to reflect the exercise of a stock option for a total of 10,886 shares of Iron Mountain common stock ("Common Stock") by means of a stock swap whereby the Reporting Person disposed of 5,537 shares of Common Stock to the Company as consideration for the Reporting Person's exercise of stock options to purchase 10,886 shares of Common Stock.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.10 to $36.12, inclusive. The reporting person undertakes to provide to Iron Mountain Incorporated, any security holder of Iron Mountain Incorporated, 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 Common Stock.

F5: The RSUs, representing a contingent right to receive a total of 10,125 shares of Common Stock, were granted to the Reporting Person on September 8, 2011 and vest in four substantially equal annual installments beginning on the first anniversary of the grant date.

F6: This stock option, which initially represented a right to purchase a total of 21,768 shares, vests in four substantially equal annual installments beginning on September 15, 2011, which was the first anniversary of the date of grant.

F7: This stock option, which initially represented a right to purchase a total of 79,482 shares, vests in four substantially equal annual installments beginning on September 15, 2011, which was the first anniversary of the date of grant.