IRM Investor Presentation

OUR NEAR-TERM GROWTH JOURNEY . Climb On! • Strong Global Leadership Positions in Multiple Businesses • World-class Operations $4.5B 2021 Revenue $4.2B 2019 Revenue 70 Years of Success Summit Growth Foundation IRON MOUNTAIN $5.1B 2022 Revenue $5.5B - $5.6B 2023E Revenue MATTERHORN: Accelerating Growth ~$7.3B 2026E Revenue IRM INVESTOR PRESENTATION 9

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