John Tomovcsik - 14 Jun 2024 Form 4 Insider Report for IRON MOUNTAIN INC (IRM)

Role: EVP, Chief Operating Officer
Signature: /s/ Keely Stewart, under Power of Attorney dated April 17, 2023, from John Tomovcsik
Issuer symbol: IRM
Transactions as of: 14 Jun 2024
Net transactions value: $0
Form type: 4
Filing time: 17 Jun 2024, 17:45:51 UTC
Previous filing: 05 Mar 2024
Next filing: 24 Jun 2024
SEC: View on sec.gov

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	IRM	Restricted Stock Units	Disposed to Issuer	$0	-7,990	-100%	$0.000000^*	0	14 Jun 2024	Common Stock	7,990		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").
F2	These RSUs were forfeited as a result of the reporting person's retirement. They would have otherwise vested in three substantially equal annual installments beginning on the first anniversary of the grant date, March 1, 2024.