IRON MOUNTAIN INC — Director's Dealing 2016

Feb 22, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2016-02-18

Reporting Person: MacLean Theodore (Exec.Vice Pres. and CMO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-02-19	Common Stock, par value $.01 per share	M	1543	—	Acquired	4419	Direct
2016-02-19	Common Stock, par value $.01 per share	F	582	$28.95	Disposed	3837	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-02-18	Employee Stock Option (Right to Buy)	$29.27	A	39441	Acquired	2026-02-18	Common Stock (39441)	Direct
2016-02-18	Restricted Stock Units	$	A	6149	Acquired		Common Stock (6149)	Direct
2016-02-19	Restricted Stock Units	$	M	1543	Disposed		Common Stock (1543)	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 19, 2015.

F2: This stock option becomes exercisable in three substantially equal annual installments beginning on the first anniversary of the date of grant.

F3: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F4: The RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F5: The RSUs, representing a contingent right to receive a total of 4,635 shares of Common Stock, were granted to the Reporting Person on February 19, 2015 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.