IRM Investor Presentation

IRON MOUNTAIN SNAPSHOT (NYSE: IRM) Mountaineers ~26,000 Customers Served Countries Served 225,000+ 60 Global Presence ~97M Sq. Ft. | ~730M Cubic Ft. Global Physical Volume IRON MOUNTAIN Note: All figures as of 9/30/23 unless otherwise noted. Facilities ~1,400 2022 Revenue Breakdown Storage 59% 41% Service ~$5.1B Member of S&P 500 Nareit. IRM INVESTOR PRESENTATION 5

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