IRON MOUNTAIN INC — Director's Dealing 2021

Mar 11, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2021-03-09

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-03-09	Common Stock, par value $.01 per share	M	2115	—	Acquired	220816	Direct
2021-03-09	Common Stock, par value $.01 per share	F	938	$36.68	Disposed	219878	Direct
2021-03-10	Common Stock, par value $.01 per share	S	589	$36.77	Disposed	219289	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-03-09	Restricted Stock Units	$	M	2115	Disposed		Common Stock (2115.0)	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 9, 2020.

F2: This transaction was effected pursuant to a 10b5-1 trading plan which was approved and became effective as of May 26,2020.

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 6,345 shares of Common Stock, were granted to the Reporting Person on March 9, 2020 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.