IRON MOUNTAIN INC — Director's Dealing 2022

Mar 3, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2022-03-01

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-03-01	Common Stock, par value $.01 per share	M	26634	—	Acquired	303945	Direct
2022-03-01	Common Stock, par value $.01 per share	F	11186	$49.67	Disposed	292759	Direct
2022-03-02	Common Stock, par value $.01 per share	S	7724	$49.67	Disposed	285035	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-03-01	Restricted Stock Units	$	M	26634	Disposed		Common Stock (26634.0)	Direct
2022-03-01	Restricted Stock Units	$	A	21139	Acquired		Common Stock (21139.0)	Direct
2022-03-01	Employee Stock Option (Right to Buy)	$49.67	A	211455	Acquired	2032-03-01	Common Stock (211455.0)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2021.

F2: This transaction was effected pursuant to a 10b5-1 trading plan which was approved and became effective as of March 19,2021.

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 79,902 shares of Common Stock, were granted to the Reporting Person on March 1, 2021 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F5: The RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6: This stock option becomes exercisable in three substantially equal annual installments beginning on the first anniversary of the grant date.