IRON MOUNTAIN INC — Director's Dealing 2021

Feb 18, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2021-02-16

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-16	Common Stock, par value $.01 per share	M	24515	—	Acquired	212808	Direct
2021-02-16	Common Stock, par value $.01 per share	F	7210	$32.97	Disposed	205598	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-16	Restricted Stock Units	$	M	24515	Disposed		Common Stock (24515.0)	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: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F3: The RSUs, representing a contingent right to receive a total of 73,398 shares of Common Stock, were granted to the Reporting Person on February 15, 2018 and have vested in full.