IRON MOUNTAIN INC — Director's Dealing 2023

Feb 23, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2023-02-21

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-21	Common Stock, par value $.01 per share	M	25518	—	Acquired	321168	Direct
2023-02-21	Common Stock, par value $.01 per share	F	7752	$50.67	Disposed	313416	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-21	Restricted Stock Units	$	M	25518	Disposed		Common Stock (25518.0)	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 19, 2020.

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 76,553 shares of Common Stock, were granted to the Reporting Person on February 19, 2020 and are fully vested.