IRON MOUNTAIN INC — Director's Dealing 2022

Feb 24, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2022-02-22

Reporting Person: Kidd Mark (EVP, GM Data Centers)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-02-22	Common Stock, par value $.01 per share	M	4216	—	Acquired	24514	Direct
2022-02-22	Common Stock, par value $.01 per share	F	1975	$42.68	Disposed	22539	Direct
2022-02-22	Common Stock, par value $.01 per share	M	2240	—	Acquired	24779	Direct
2022-02-22	Common Stock, par value $.01 per share	F	993	$42.68	Disposed	23786	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-02-22	Restricted Stock Units	$	M	4216	Disposed		Common Stock (4216.0)	Direct
2022-02-22	Restricted Stock Units	$	M	2240	Disposed		Common Stock (2240.0)	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: This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on February 20, 2019.

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 12,647 shares of Common Stock, were granted to the Reporting Person on February 19, 2020 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F5: The RSUs, representing a contingent right to receive a total of 6,718 shares of Common Stock, were granted to the Reporting Person on February 20, 2019 and are fully vested.