Robin Matlock - 12 May 2021 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)

Role: Director
Signature: /s/ Elizabeth Tammaro, under Power of Attorney dated June 20, 2019 from Robin Matlock
Issuer symbol: IRM
Transactions as of: 12 May 2021
Net transactions value: +$39.33
Form type: 4
Filing time: 14 May 2021, 16:37:14 UTC
Next filing: 08 Jul 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IRM	Common Stock, par value $.01 per share	Award	$39.33	+3,933	+34%	$0.0100^*	15,610	12 May 2021	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Consists of shares issuable upon the settlement of restricted stock units ("RSUs") granted on May 12, 2021. The RSUs vest on the grant date.