0001020569-23-000193.txt : 20231006 0001020569-23-000193.hdr.sgml : 20231006 20231006161043 ACCESSION NUMBER: 0001020569-23-000193 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20231005 FILED AS OF DATE: 20231006 DATE AS OF CHANGE: 20231006 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: MARSON DEBORAH CENTRAL INDEX KEY: 0001691591 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-13045 FILM NUMBER: 231314334 MAIL ADDRESS: STREET 1: C/O IRON MOUNTAIN INCORPORATED STREET 2: ONE FEDERAL STREET CITY: BOSTON STATE: MA ZIP: 02110 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: IRON MOUNTAIN INC CENTRAL INDEX KEY: 0001020569 STANDARD INDUSTRIAL CLASSIFICATION: REAL ESTATE INVESTMENT TRUSTS [6798] IRS NUMBER: 232588479 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 85 NEW HAMPSHIRE AVENUE, SUITE 150 STREET 2: PEASE INTERNATIONAL TRADEPORT CITY: PORTSMOUTH STATE: NH ZIP: 03801 BUSINESS PHONE: 617-535-4781 MAIL ADDRESS: STREET 1: 1101 ENTERPRISE DRIVE CITY: ROYERSFORD STATE: PA ZIP: 19468 FORMER COMPANY: FORMER CONFORMED NAME: IRON MOUNTAIN INC/PA DATE OF NAME CHANGE: 20000201 FORMER COMPANY: FORMER CONFORMED NAME: PIERCE LEAHY CORP DATE OF NAME CHANGE: 19960807 4 1 wf-form4_169662302974260.xml FORM 4 X0508 4 2023-10-05 0 0001020569 IRON MOUNTAIN INC IRM 0001691591 MARSON DEBORAH C/O IRON MOUNTAIN INCORPORATED 85 NEW HAMPSHIRE AVENUE, SUITE 150 PORTSMOUTH NH 03801 0 1 0 0 EVP, General Counsel, Sec. 1 Common Stock, par value $.01 per share 2023-10-05 4 S 0 2000 57.68 D 56026 D /s/ Keely Stewart, under Power of Attorney dated April 17, 2023, from Deborah Marson 2023-10-06 EX-24 2 ex-24.htm MARSON POA 4-17-2023

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that I, Deborah Marson, do hereby make, constitute and appoint, Keely Stewart, Assistant Secretary of Iron Mountain Incorporated and Luke Cummiskey, Manager, Senior Corporate Counsel, acting singly, to be my lawful attorney-in-fact for me and to do any and all acts which I could do in connection with any filings required by Section 16 of the Securities Exchange Act of 1934, including, without limitation, the preparation, signing and filing of Forms 3, 4 and 5 ("Section 16 Filings").

Among the powers granted to my attorney-in-fact are:

To prepare, sign and file with the Securities and Exchange Commission and the New York Stock Exchange the Section 16 Filings, in my name or stead, and any and all such further documents as he/she may deem necessary or advisable in order to carry out the required Section 16 Filings and the powers granted to him/her by these presents.

This Power of Attorney shall remain in effect until revoked by the undersigned in writing.

IN WITNESS WHEREOF, I have hereunto set my hand and seal this 17 day of April, 2023.

__/s/ Deborah Marson______
Name: Deborah Marson