Global Data Center Expansion and Sustainability Focus

Strong 2020 in challenging environment 28 828 ($ in millions, except per share data) Storage Rental Revenue Service Revenue Total Revenue Full-Year Ended 12/31/2020 12/31/2019 Y/Y % Change $2,754 $2,681 3% $1,393 $1,581 (12)% $4,147 $4,263 (3)% Adjusted EBITDA (1) $1,476 $1,469 0% Adjusted EBITDA margin 35.6% 34.5% +110 bps AFFO(1) AFFO per share(1) $888 $867 2% $3.07 $3.01 2% Note: all non-GAAP figures utilize our new definitions and updated methodology. (1) Reconciliations for Adjusted EBITDA and AFFO to their respective GAAP measures can be found in the Supplemental Financial Information on pages 16 and 19, respectively. IRON MOUNTAINⓇ

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