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: Meaney William L (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-02-22	Common Stock, par value $.01 per share	M	25518	—	Acquired	244807	Direct
2022-02-22	Common Stock, par value $.01 per share	F	7203	$42.68	Disposed	237604	Direct
2022-02-22	Common Stock, par value $.01 per share	M	23096	—	Acquired	260700	Direct
2022-02-22	Common Stock, par value $.01 per share	F	9700	$42.68	Disposed	251000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-02-22	Restricted Stock Units	$	M	25518	Disposed		Common Stock (25518.0)	Direct
2022-02-22	Restricted Stock Units	$	M	23096	Disposed		Common Stock (23096.0)	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 76,553 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 69,288 shares of Common Stock, were granted to the Reporting Person on February 20, 2019 and are fully vested.