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IRON MOUNTAIN INC

LISTEDNYSE
SYMBOLIRM
SIC6798
STATE OF INC.DE
FISCAL YEAR ENDSDecember 31
CIK1020569

REAL ESTATE INVESTMENT TRUSTS · LARGE ACCELERATED FILER · 10 FISCAL YEARS OF SEC XBRL DATA, 2016–2025

REVENUES, NET INCOME AND FREE CASH FLOW BY FISCAL YEAR$ billions-2024682016201720182019202020212022202320242025RevenuesNet incomeFree cash flowEARNINGS AND DIVIDENDS PER SHARE$ per share0.001.002.003.004.002016201720182019202020212022202320242025EPS dilutedDividends per share

Fiscal years labelled by the calendar year in which they end. Bars in $ billions; per-share figures as reported.

CAPITALIZATION 12/31/25

($ millions)Amount%
Total debt16,432106.3
Stockholders' equity(981)-6.3
Total capitalization15,451100.0

297,702,812 shares outstanding at 24 July 2026 (cover page of the 10-Q filed 5 August 2026).

LONG-TERM DEBT 12/31/25

($ millions)Amount
Long-term debt, incl. current maturities16,432
Long-term debt, noncurrent16,216
Current maturities216

CAPITAL STOCK 12/31/25

Common shares authorized400,000,000
Common shares issued295,788,645
Par or stated value per share ($)0.01
Preferred stock ($ millions)0
Outstanding at 7/24/26297,702,812

DIVIDENDS DECLARED/PAID

Fiscal yearPer share $Payout %
20253.22657.1
20242.73447.5
20232.54403.2
20222.47130.0
20212.47159.4

HISTORY AND BUSINESS

HISTORY: Incorporated in Delaware. Formerly known as IRON MOUNTAIN INC/PA (to 9 June 2005); PIERCE LEAHY CORP (to 16 February 1999).

BUSINESS: Classified by the SEC under Standard Industrial Classification 6798, Real Estate Investment Trusts. Large accelerated filer. Principal executive office: 85 New Hampshire Avenue, Suite 150, Pease International Tradeport, Portsmouth, NH 03801. Fiscal year ends December 31. For a description of the business, see Item 1 of the latest 10-K.

CONSOLIDATED INCOME ACCOUNT, YEARS ENDED

($ millions)12/31/2512/31/2412/31/23
Total revenues6,9026,1505,480
Depreciation and amortization1,024901776
Operating income1,1641,010922
Interest expense829722586
Net income152184187
Earned per share, diluted ($)0.490.610.63
Dividends per share ($)3.222.732.54

CONSOLIDATED BALANCE SHEET

($ millions)12/31/2512/31/24
Cash and equivalents159156
Total assets21,12518,717
Debt16,43213,719
Stockholders' equity(981)(503)

TEN-YEAR STATISTICS: FISCAL YEARS ($ millions except per share)

Fiscal year endedRevenuesOper. incomeNet incomeNet margin %EPS diluted $Div. per share $Oper. cash flowCapital expend.Free cash flowTotal assetsTotal liabilitiesTotal debtStockholders' equityROE %Debt / equity
12/31/256,9021,1641452.10.493.221,3402,272(932)21,12521,834d16,432(981)-14.7-16.75
12/31/246,1501,0101802.90.612.731,1971,792(595)18,71719,022d13,719(503)-35.8-27.27
12/31/235,4809221843.40.632.541,1141,339(226)17,47417,262d11,93321287.056.38
12/31/225,1041,05055710.91.902.479288755216,14115,504d10,56963787.516.60
12/31/214,49285445010.01.552.4775961114814,45013,593d9,27285652.610.83
12/31/204,1479353438.31.192.4798843854914,14913,013d8,7031,13730.17.66
12/31/194,2637812676.30.932.4596769327413,81712,353d8,6651,46418.35.92
12/31/184,2268083548.41.232.3893646047511,8579,995d8,1431,86119.04.38
12/31/173,8466341704.40.642.2772134337810,9758,690d7,0432,2977.43.07
12/31/163,5115021053.00.422.045443292159,4877,550d6,2511,9375.43.23

Net margin = net income ÷ revenues; ROE = net income ÷ year-end stockholders’ equity; total debt = long-term debt including current maturities plus short-term borrowings/commercial paper, as tagged in XBRL; free cash flow = operating cash flow − purchases of property, plant and equipment; d = derived as total assets − total equity where the filing does not tag total liabilities; – = not reported in XBRL for that year.

REGISTRANT:

IRON MOUNTAIN INC
CIK 1020569 · EIN 23-2588479

PRINCIPAL OFFICE:

85 New Hampshire Avenue, Suite 150, Pease International Tradeport, Portsmouth, NH 03801
Tel.: 617-535-4781

INCORPORATED:

Delaware

INDUSTRY (SEC SIC CODE):

6798 · Real Estate Investment Trusts

FILER STATUS:

Large accelerated filer

LATEST ANNUAL REPORT:

10-K for period ended 12/31/25, filed 12 February 2026

FORMER NAMES:

IRON MOUNTAIN INC/PA; PIERCE LEAHY CORP

RECENT FILINGS (ANNUAL REPORT REFERENCES BELOW):

8/5/2610-Qperiod 6/30/26
8/5/268-Kperiod 8/5/26
6/26/268-Kperiod 6/26/26
5/12/268-Kperiod 5/7/26
4/30/2610-Qperiod 3/31/26
4/30/268-Kperiod 4/30/26
3/24/26DEF 14Aperiod 12/31/25
3/9/268-Kperiod 3/9/26

Sources: SEC XBRL company facts (all financial figures) · SEC submissions (registrant, address, SIC, filings) · annual reports: 10-K FY2025 (filed 2/12/26) · 10-K FY2024 (filed 2/14/25) · 10-K FY2023 (filed 2/22/24) · 10-K FY2022 (filed 2/23/23) · 10-K FY2021 (filed 2/24/22) · 10-K FY2020 (filed 2/24/21) · 10-K FY2019 (filed 2/13/20) · 10-K FY2018 (filed 2/14/19). Values are the latest figures filed for each fiscal year (restated where a later 10-K restated them). Ratios and free cash flow are Pathos calculations from those figures. Retrieved 31 October 2026.

Data from SEC filings. © 2026 Pathos Investments · pathosinvestments.com · For educational purposes only. Not investment advice.

Data from SEC filings  ·  Educational only  ·  Not investment advice