IRON MOUNTAIN INC — Director's Dealing 2023

Jan 5, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2023-01-03

Reporting Person: Hytinen Barry (EVP and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-01-03	Common Stock, par value $.01 per share	M	16442	—	Acquired	60536	Direct
2023-01-03	Common Stock, par value $.01 per share	F	7209	$49.67	Disposed	53327	Direct
2023-01-03	Common Stock, par value $.01 per share	M	16441	—	Acquired	69768	Direct
2023-01-03	Common Stock, par value $.01 per share	F	7209	$49.67	Disposed	62559	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-01-03	Restricted Stock Units	$	M	16442	Disposed		Common Stock (16442.0)	Direct
2023-01-03	Restricted Stock Units	$	M	16441	Disposed		Common Stock (16441.0)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on January 2, 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 49,325 shares of Common Stock, were granted to the Reporting Person on January 2, 2020 and is fully vested.

F4: The RSUs, representing a contingent right to receive a total of 32,883 shares of Common Stock, were granted to the Reporting Person on January 2, 2020 and is fully vested.