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KPI data tables

Iron Mountain operating metrics behind the KPI charts, newest period first (up to 24 periods per chart). Periods use each company's own fiscal labels where the source does; each table names its source.

Iron Mountain Data Center Rental Churn (Quarterly) (percent)
PeriodRental churn
Q2 20262
Q1 20260.4
Q4 20251.7
Q3 20250.3
Q2 20250.5
Q1 20250.3
Q4 20244.4
Q3 20240.5
Q2 20241.2
Q1 20240.9
Q4 20231.7
Q3 20231
Q2 20231.4
Q1 20231.5
Q4 20220.2
Q3 20220.6
Q2 20220.6
Q1 20222
Q4 20210.8
Q3 20213.9

Source: Iron Mountain Form 8-K Exhibit 99.3 Supplemental Financial Information, Section II Operating Highlights (five sequential quarter columns, newest first; later filing wins on overlap). Rows: Records Management Retention Rate; Data Center Leasable Megawatts (period-end stock); Kilowatts Leased - New/Expansion (quarterly flow, stored as MW = kW / 1,000); Churn (rental churn %). Q4 2025 8-K Exhibit 99.3 was image-wrapped HTML; Q4 2025 prints come from the Q1 2026 and Q2 2026 supplements. https://www.sec.gov/Archives/edgar/data/1020569/000102056922000206/q32022srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000036/q42022srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000105/q12023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000166/q22023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000212/q32023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000038/q42023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000126/q12024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000208/q22024srp-final4.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000253/q32024srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000035/q42024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000106/q12025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000173/q22025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000203/q32025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000036/q12026srp_final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000068/q22026srpfinal.htm

Iron Mountain Data Center Leasable Capacity (Quarterly) (megawatts)
PeriodLeasable MW
Q2 2026528.5
Q1 2026507.2
Q4 2025488.2
Q3 2025452.2
Q2 2025450.2
Q1 2025424.2
Q4 2024416.2
Q3 2024364.7
Q2 2024265.7
Q1 2024261.4
Q4 2023255.4
Q3 2023225.2
Q2 2023221.2
Q1 2023206.9
Q4 2022191.6
Q3 2022190.6
Q2 2022179.8
Q1 2022176.8
Q4 2021176.4
Q3 2021156.6

Source: Iron Mountain Form 8-K Exhibit 99.3 Supplemental Financial Information, Section II Operating Highlights (five sequential quarter columns, newest first; later filing wins on overlap). Rows: Records Management Retention Rate; Data Center Leasable Megawatts (period-end stock); Kilowatts Leased - New/Expansion (quarterly flow, stored as MW = kW / 1,000); Churn (rental churn %). Q4 2025 8-K Exhibit 99.3 was image-wrapped HTML; Q4 2025 prints come from the Q1 2026 and Q2 2026 supplements. https://www.sec.gov/Archives/edgar/data/1020569/000102056922000206/q32022srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000036/q42022srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000105/q12023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000166/q22023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000212/q32023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000038/q42023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000126/q12024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000208/q22024srp-final4.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000253/q32024srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000035/q42024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000106/q12025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000173/q22025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000203/q32025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000036/q12026srp_final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000068/q22026srpfinal.htm

Iron Mountain Data Center New and Expansion Leasing (Quarterly) (megawatts)
PeriodNew and expansion MW signed
Q2 202613.127
Q1 202621.849
Q4 202543.413
Q3 202513.464
Q2 20252.325
Q1 20253.7
Q4 20249.664
Q3 20249.205
Q2 202466.493
Q1 202430.449
Q4 20234.535
Q3 202365.355
Q2 20232.69
Q1 202351.77
Q4 202213.657
Q3 20226.901
Q2 202283.046
Q1 202235.048
Q4 202127.199
Q3 20218.989

Source: Iron Mountain Form 8-K Exhibit 99.3 Supplemental Financial Information, Section II Operating Highlights (five sequential quarter columns, newest first; later filing wins on overlap). Rows: Records Management Retention Rate; Data Center Leasable Megawatts (period-end stock); Kilowatts Leased - New/Expansion (quarterly flow, stored as MW = kW / 1,000); Churn (rental churn %). Q4 2025 8-K Exhibit 99.3 was image-wrapped HTML; Q4 2025 prints come from the Q1 2026 and Q2 2026 supplements. https://www.sec.gov/Archives/edgar/data/1020569/000102056922000206/q32022srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000036/q42022srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000105/q12023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000166/q22023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000212/q32023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000038/q42023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000126/q12024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000208/q22024srp-final4.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000253/q32024srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000035/q42024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000106/q12025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000173/q22025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000203/q32025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000036/q12026srp_final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000068/q22026srpfinal.htm

Iron Mountain Data Center Occupancy (Quarterly) (percent)
PeriodStabilized leasedTotal leased
Q2 202697.497.1
Q1 202698.397.2
Q4 20259896.9
Q3 202598.297
Q2 202597.996.3

Source: Iron Mountain Q2 2026 Supplemental Financial Information (Form 8-K filed 5 Aug 2026, Exhibit 99.3), Section II Operating Highlights, Data Center Leased % - Stabilized and Leased % - Total (Q2 2025 through Q2 2026). Site-level Leased % by MW and Pre-Stabilized definition: Section VII Data Center Operating Portfolio and Appendix Data Center Business Definitions. https://www.sec.gov/Archives/edgar/data/1020569/000102056926000068/q22026srpfinal.htm

Iron Mountain Records Management Retention Rate (Quarterly) (percent)
PeriodRetention rate
Q2 202693.4
Q1 202693.3
Q4 202593.3
Q3 202593.2
Q2 202593
Q1 202592.9
Q4 202492.6
Q3 202492.7
Q2 202492.8
Q1 202492.9
Q4 202392.9
Q3 202393
Q2 202392.8
Q1 202393
Q4 202293.3
Q3 202293.4
Q2 202293.8
Q1 202293.8
Q4 202194.1
Q3 202194.4

Source: Iron Mountain Form 8-K Exhibit 99.3 Supplemental Financial Information, Section II Operating Highlights (five sequential quarter columns, newest first; later filing wins on overlap). Rows: Records Management Retention Rate; Data Center Leasable Megawatts (period-end stock); Kilowatts Leased - New/Expansion (quarterly flow, stored as MW = kW / 1,000); Churn (rental churn %). Q4 2025 8-K Exhibit 99.3 was image-wrapped HTML; Q4 2025 prints come from the Q1 2026 and Q2 2026 supplements. https://www.sec.gov/Archives/edgar/data/1020569/000102056922000206/q32022srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000036/q42022srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000105/q12023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000166/q22023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056923000212/q32023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000038/q42023srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000126/q12024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000208/q22024srp-final4.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056924000253/q32024srp-final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000035/q42024srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000106/q12025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000173/q22025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056925000203/q32025srpfinal.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000036/q12026srp_final.htm https://www.sec.gov/Archives/edgar/data/1020569/000102056926000068/q22026srpfinal.htm

Iron Mountain Physical Storage Volume (Quarterly) (million cubic feet)
PeriodGlobal RIMCorporate and Other
Q2 2026740.5427.338
Q1 2026738.017.266
Q4 2025736.8297.173
Q3 2025736.3997.112
Q2 2025728.747.067
Q1 2025727.4966.671
Q4 2024727.2666.305
Q3 2024726.9526.045
Q2 2024726.7125.895
Q1 2024726.3165.715

Source: Iron Mountain Q2 2026 Supplemental Financial Information (Form 8-K filed 5 Aug 2026, Exhibit 99.3), Section III Global Storage Volume table (Q1 2024 through Q2 2026). Figures printed in thousands of cubic feet; this chart stores millions (divide by 1,000). Total Volume definition: Appendix. 735M+ cubic feet: Q2 2026 earnings presentation, Iron Mountain Snapshot. https://www.sec.gov/Archives/edgar/data/1020569/000102056926000068/q22026srpfinal.htm

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Iron Mountain (IRM) - KPIs | Sterling