IRON MOUNTAIN INC — Director's Dealing 2019

Feb 20, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2019-02-15

Reporting Person: RUSSO FIDELMA (EVP, Chief Technology Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-02-15	Common Stock, par value $.01 per share	M	4048	—	Acquired	11822	Direct
2019-02-15	Common Stock, par value $.01 per share	F	1282	$35.12	Disposed	10540	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-02-15	Restricted Stock Units	$	M	4048	Disposed		Common Stock (4048.0)	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 15, 2018.

F2: Includes 146 shares acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

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

F4: The RSUs, representing a contingent right to receive a total of 12,158 shares of Common Stock, were granted to the Reporting Person on February 15, 2018 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.