IRON MOUNTAIN INC — Director's Dealing 2018

Feb 20, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2018-02-15

Reporting Person: Borges Daniel (VP & Chief Accounting Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-16	Common Stock, par value $.01 per share	M	716	—	Acquired	2292	Direct
2018-02-16	Common Stock, par value $.01 per share	F	248	$34.19	Disposed	2044	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-15	Restricted Stock Units	$	A	2634	Acquired		Common Stock (2634)	Direct
2018-02-16	Restricted Stock Units	$	M	716	Disposed		Common Stock (716)	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 16, 2017.

F2: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F3: The RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F4: The RSUs, representing a contingent right to receive a total of 2,151 shares of Common Stock, were granted to the Reporting Person on February 16, 2017 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.