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    SEC Form 10-Q filed by Iron Mountain Incorporated (Delaware)

    5/1/25 4:02:11 PM ET
    $IRM
    Real Estate Investment Trusts
    Real Estate
    Get the next $IRM alert in real time by email
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    Table of Contents

    UNITED STATES
    SECURITIES AND EXCHANGE COMMISSION
    Washington, DC 20549
    FORM 10-Q
    (Mark One)
    ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the Quarterly Period Ended March 31, 2025
    OR
    ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
    For the Transition Period from                        to                       
    Commission file number 1-13045
    logo_ironmountain.jpg
    IRON MOUNTAIN INCORPORATED
    (Exact Name of Registrant as Specified in Its Charter)
    Delaware23-2588479
    (State or other Jurisdiction of Incorporation or Organization)(I.R.S. Employer Identification No.)
        
    85 New Hampshire Avenue, Suite 150, Portsmouth, New Hampshire 03801
    (Address of Principal Executive Offices, Including Zip Code)
    (617) 535-4766
    (Registrant's Telephone Number, Including Area Code)
    Securities registered pursuant to Section 12(b) of the Exchange Act:
    Title of each classTrading Symbol(s)Name of each exchange on which registered
    Common Stock, $.01 par valueIRMNYSE
    Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒    No ☐
    Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒    No ☐
    Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):
    Large accelerated filer
    ☒
    Accelerated filer
    ☐
    Non-accelerated filer
    ☐
    Smaller reporting company
    ☐
    Emerging growth company
    ☐
    If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
    Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐    No ☒
    As of April 25, 2025, the registrant had 295,043,896 outstanding shares of common stock, $.01 par value.


    Table of Contents

    logo_ironmountain_toc.jpg
    IRON MOUNTAIN INCORPORATED
    2025 FORM 10-Q QUARTERLY REPORT
    TABLE OF CONTENTS
    PART I—FINANCIAL INFORMATION
    1
    ITEM 1.
    Unaudited Condensed Consolidated Financial Statements
    2
    Condensed Consolidated Balance Sheets at March 31, 2025 and December 31, 2024
    3
    Condensed Consolidated Statements of Operations for the Three Months Ended March 31, 2025 and 2024
    4
    Condensed Consolidated Statements of Comprehensive Income (Loss) for the Three Months Ended March 31, 2025 and 2024
    5
    Condensed Consolidated Statements of (Deficit) Equity for the Three Months Ended March 31, 2025 and 2024
    6
    Condensed Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2025 and 2024
    7
    Notes to Condensed Consolidated Financial Statements
    24
    ITEM 2.
    Management's Discussion and Analysis of Financial Condition and Results of Operations
    42
    ITEM 4.
    Controls and Procedures
    PART II—OTHER INFORMATION
    44
    ITEM 2.
    Unregistered Sales of Equity Securities and Use of Proceeds
    44
    ITEM 5.
    Other Information
    44
    ITEM 6.
    Exhibits
    45
    Signatures






    pgdivider_part1.jpg


    Table of Contents
    PART I. FINANCIAL INFORMATION
    ITEM 1. UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    1

    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    CONDENSED CONSOLIDATED BALANCE SHEETS
    (IN THOUSANDS, EXCEPT SHARE AND PER SHARE DATA) (UNAUDITED)
     MARCH 31, 2025DECEMBER 31, 2024
    ASSETS 
    Current Assets: 
    Cash and cash equivalents$155,338 $155,716 
    Accounts receivable (less allowances of $90,610 and $86,712 as of March 31, 2025 and December 31, 2024, respectively)
    1,312,079 1,291,379 
    Prepaid expenses and other282,945 244,127 
    Total Current Assets1,750,362 1,691,222 
    Property, Plant and Equipment: 
    Property, plant and equipment12,758,467 11,985,997 
    Less—Accumulated depreciation(4,509,307)(4,354,398)
    Property, Plant and Equipment, Net8,249,160 7,631,599 
    Other Assets, Net: 
    Goodwill5,141,810 5,083,817 
    Customer and supplier relationships and other intangible assets1,266,993 1,274,731 
    Operating lease right-of-use assets 2,386,511 2,489,893 
    Other567,251 545,853 
    Total Other Assets, Net9,362,565 9,394,294 
    Total Assets$19,362,087 $18,717,115 
    LIABILITIES AND EQUITY 
    Current Liabilities: 
    Current portion of long-term debt$736,922 $715,109 
    Accounts payable707,581 678,716 
    Accrued expenses and other current liabilities (includes current portion of operating lease liabilities)1,063,237 1,366,568 
    Deferred revenue333,171 326,882 
    Total Current Liabilities2,840,911 3,087,275 
    Long-term Debt, net of current portion14,177,474 13,003,977 
    Long-term Operating Lease Liabilities, net of current portion 2,224,080 2,334,826 
    Other Long-term Liabilities339,144 312,199 
    Deferred Income Taxes204,516 205,341 
    Commitments and Contingencies
    Redeemable Noncontrolling Interests78,237 78,171 
    (Deficit) Equity:  
    Iron Mountain Incorporated Stockholders' (Deficit) Equity:  
    Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)
    — — 
    Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 294,968,740 and 293,592,637 shares as of March 31, 2025 and December 31, 2024, respectively)
    2,950 2,936 
    Additional paid-in capital4,609,663 4,647,330 
    (Distributions in excess of earnings) Earnings in excess of distributions(4,808,764)(4,583,436)
    Accumulated other comprehensive items, net(502,369)(569,952)
    Total Iron Mountain Incorporated Stockholders' (Deficit) Equity(698,520)(503,122)
    Noncontrolling Interests196,245 198,448 
    Total (Deficit) Equity(502,275)(304,674)
    Total Liabilities and (Deficit) Equity$19,362,087 $18,717,115 


    The accompanying notes are an integral part of these condensed consolidated financial statements.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    2

    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
    (IN THOUSANDS, EXCEPT PER SHARE DATA) (UNAUDITED)
     
    THREE MONTHS ENDED MARCH 31,
     20252024
    Revenues:  
    Storage rental$948,376 $884,842 
    Service644,153 592,021 
    Total Revenues1,592,529 1,476,863 
    Operating Expenses:
    Cost of sales (excluding depreciation and amortization)710,204 653,255 
    Selling, general and administrative329,737 319,465 
    Depreciation and amortization232,154 209,555 
    Acquisition and Integration Costs5,823 7,809 
    Restructuring and other transformation54,746 40,767 
    Loss (gain) on disposal/write-down of property, plant and equipment, net
    5,571 389 
    Total Operating Expenses1,338,235 1,231,240 
    Operating Income (Loss)254,294 245,623 
    Interest Expense, Net (includes Interest Income of $3,463 and $3,660 for the three months ended
    March 31, 2025 and 2024, respectively)
    194,738 164,519 
    Other Expense (Income), Net28,488 (12,530)
    Net Income (Loss) Before Provision (Benefit) for Income Taxes31,068 93,634 
    Provision (Benefit) for Income Taxes14,835 16,609 
    Net Income (Loss)16,233 77,025 
    Less: Net Income (Loss) Attributable to Noncontrolling Interests281 2,964 
    Net Income (Loss) Attributable to Iron Mountain Incorporated$15,952 $74,061 
    Net Income (Loss) Per Share Attributable to Iron Mountain Incorporated:  
    Basic$0.05 $0.25 
    Diluted$0.05 $0.25 
    Weighted Average Common Shares Outstanding—Basic294,507 292,746 
    Weighted Average Common Shares Outstanding—Diluted297,260 295,221 


















    The accompanying notes are an integral part of these condensed consolidated financial statements.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    3

    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
    (IN THOUSANDS) (UNAUDITED)
     
    THREE MONTHS ENDED MARCH 31,
     20252024
    Net Income (Loss)$16,233 $77,025 
    Other Comprehensive Income (Loss):  
    Foreign Currency Translation Adjustment74,916 (67,269)
    Change in Fair Value of Interest Rate Swaps(6,993)11,388 
    Reclassifications from Accumulated Other Comprehensive Items, net— (2,528)
    Total Other Comprehensive Income (Loss)
    67,923 (58,409)
    Comprehensive Income (Loss)84,156 18,616 
    Comprehensive Income (Loss) Attributable to Noncontrolling Interests621 2,196 
    Comprehensive Income (Loss) Attributable to Iron Mountain Incorporated$83,535 $16,420 
            





















    The accompanying notes are an integral part of these condensed consolidated financial statements.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    4

    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    CONDENSED CONSOLIDATED STATEMENTS OF (DEFICIT) EQUITY
    (IN THOUSANDS, EXCEPT SHARE DATA) (UNAUDITED)
    THREE MONTHS ENDED MARCH 31, 2025
     IRON MOUNTAIN INCORPORATED STOCKHOLDERS' (DEFICIT) EQUITY
     COMMON STOCKADDITIONAL
    PAID-IN
    CAPITAL
    (DISTRIBUTIONS
    IN EXCESS OF
    EARNINGS) EARNINGS IN
    EXCESS OF
    DISTRIBUTIONS
    ACCUMULATED
    OTHER
    COMPREHENSIVE
    ITEMS, NET
    NONCONTROLLING
    INTERESTS
    REDEEMABLE
    NONCONTROLLING
    INTERESTS
     TOTALSHARESAMOUNTS
    Balance, December 31, 2024
    $(304,674)293,592,637 $2,936 $4,647,330 $(4,583,436)$(569,952)$198,448 $78,171 
    Issuance and net settlement of shares under employee stock purchase and option plans and stock-based compensation(37,653)1,376,103 14 (37,667)— — — — 
    Parent cash dividends declared(241,280)— — — (241,280)— — — 
    Other comprehensive income (loss)67,583 — — — — 67,583 — 340 
    Net income (loss)15,909 — — — 15,952 — (43)324 
    Noncontrolling interests dividends(2,160)— — — — — (2,160)(598)
    Balance, March 31, 2025
    $(502,275)294,968,740 $2,950 $4,609,663 $(4,808,764)$(502,369)$196,245 $78,237 
    THREE MONTHS ENDED MARCH 31, 2024
     IRON MOUNTAIN INCORPORATED STOCKHOLDERS' EQUITY (DEFICIT)
     COMMON STOCKADDITIONAL
    PAID-IN
    CAPITAL
    (DISTRIBUTIONS
    IN EXCESS OF
    EARNINGS) EARNINGS IN
    EXCESS OF
    DISTRIBUTIONS
    ACCUMULATED
    OTHER
    COMPREHENSIVE
    ITEMS, NET
    NONCONTROLLING
    INTERESTS
    REDEEMABLE
    NONCONTROLLING
    INTERESTS
     TOTALSHARESAMOUNTS
    Balance, December 31, 2023
    $211,773  292,142,739 $2,921 $4,533,691 $(3,953,808)$(371,156)$125 $177,947 
    Issuance and net settlement of shares under employee stock purchase and option plans and stock-based compensation(15,459)942,944 10 (15,469)— — — — 
    Changes in equity related to redeemable noncontrolling interests422 — — 422 — — — (422)
    Parent cash dividends declared(194,496)— — — (194,496)— — — 
    Other comprehensive (loss) income(57,641)— — — — (57,641)— (768)
    Net income (loss)74,061 — — — 74,061 — — 2,964 
    Noncontrolling interests dividends— — — — — — — (499)
    Balance, March 31, 2024
    $18,660 293,085,683 $2,931 $4,518,644 $(4,074,243)$(428,797)$125 $179,222 










    The accompanying notes are an integral part of these condensed consolidated financial statements.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    5

    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
    (IN THOUSANDS) (UNAUDITED)
     
    THREE MONTHS ENDED MARCH 31,
     20252024
    Cash Flows from Operating Activities: 
    Net income (loss)$16,233 $77,025 
    Adjustments to reconcile net income (loss) to cash flows from operating activities:  
    Depreciation162,441 143,633 
    Amortization (includes amortization of deferred financing costs and discounts of $7,856 and $6,100 for the three months ended March 31, 2025 and 2024, respectively)
    77,569 72,022 
    Revenue reduction associated with amortization of customer inducements and above- and below-market leases 1,317 1,321 
    Stock-based compensation expense26,094 14,039 
    (Benefit) provision for deferred income taxes(6,408)1,125 
    Loss (gain) on disposal/write-down of property, plant and equipment, net 5,571 389 
    Foreign currency transactions and other, net20,557 (5,091)
    (Increase) decrease in assets(56,083)(29,738)
    (Decrease) increase in liabilities(49,992)(144,687)
    Cash Flows from Operating Activities197,299 130,038 
    Cash Flows from Investing Activities:  
    Capital expenditures (674,767)(381,145)
    Cash paid for acquisitions, net of cash acquired(35,066)(122,479)
    Acquisition of customer intangibles(8,925)(2,286)
    Contract costs(31,450)(25,304)
    Investments in joint ventures and other investments, net(16,748)— 
    Proceeds from sales of property and equipment and other, net190 5,605 
    Cash Flows from Investing Activities (766,766)(525,609)
    Cash Flows from Financing Activities:  
    Repayment of revolving credit facility, term loan facilities and other debt(2,281,353)(1,730,252)
    Proceeds from revolving credit facility, term loan facilities and other debt3,390,322 2,479,378 
    Equity distribution to noncontrolling interests (2,758)(499)
    Parent cash dividends(223,479)(198,013)
    Payment of deferred purchase obligations and other deferred payments(240,217)(158,677)
    Net (payments) proceeds associated with employee stock-based awards (63,747)(29,498)
    Other, net64 (340)
    Cash Flows from Financing Activities578,832 362,099 
    Effect of Exchange Rates on Cash and Cash Equivalents(9,743)2,338 
    (Decrease) Increase in Cash and Cash Equivalents(378)(31,134)
    Cash and Cash Equivalents, Beginning of Period155,716 222,789 
    Cash and Cash Equivalents, End of Period$155,338 $191,655 
    Supplemental Information: 
    Cash Paid for Interest$267,214 $274,796 
    Cash Paid for Income Taxes, Net$27,751 $18,613 
    Non-Cash Investing and Financing Activities:  
    Financing Leases and Other$52,284 $38,082 
    Accrued Capital Expenditures$321,234 $210,255 
    Deferred Purchase Obligations and Other Deferred Payments$2,880 $133,713 
    Dividends Payable$240,450 $198,875 




    The accompanying notes are an integral part of these condensed consolidated financial statements.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
    (In thousands, except share and per share data) (Unaudited)
    1. GENERAL
    The unaudited condensed consolidated financial statements of Iron Mountain Incorporated, a Delaware corporation, and its subsidiaries ("we" or "us"), have been prepared pursuant to the rules and regulations of the United States Securities and Exchange Commission (the "SEC"). Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been omitted pursuant to those rules and regulations, but we believe that the disclosures included herein are adequate to make the information presented not misleading. Certain items previously reported under specific captions within the statement of cash flows have been reclassified to conform to the current year presentation. The interim condensed consolidated financial statements are presented herein and, in the opinion of management, reflect all adjustments of a normal recurring nature necessary for a fair presentation. Interim results are not necessarily indicative of results for a full year.
    The Condensed Consolidated Financial Statements and Notes thereto, which are included herein, should be read in conjunction with the Consolidated Financial Statements and Notes thereto for the year ended December 31, 2024 included in our Annual Report on Form 10-K filed with the SEC on February 14, 2025 (our "Annual Report").
    In September 2022, we announced a global program designed to accelerate the growth of our business ("Project Matterhorn"). See Note 10.
    We have been organized and have operated as a real estate investment trust for United States federal income tax purposes beginning with our taxable year ended December 31, 2014.
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
    A. CASH AND CASH EQUIVALENTS
    Cash and cash equivalents include cash on hand and cash invested in highly liquid short-term securities, which have remaining maturities at the date of purchase of less than 90 days. Cash and cash equivalents are carried at cost, which approximates fair value.
    B. ACCOUNTS RECEIVABLE
    We maintain an allowance for doubtful accounts and a credit memo reserve for estimated losses resulting from the potential inability of our customers to make required payments and potential disputes regarding billing and service issues. The rollforward of the allowance for doubtful accounts and credit memo reserves for the three months ended March 31, 2025 is as follows:
    Balance as of December 31, 2024
    $86,712 
    Credit memos charged to revenue22,089 
    Allowance for bad debts charged to expense9,770 
    Deductions and other(1)
    (27,961)
    Balance as of March 31, 2025
    $90,610 
    (1)Primarily consists of the issuance of credit memos, the write-off of accounts receivable and the impact associated with currency translation adjustments.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    C. LEASES
    We lease facilities for certain warehouses, data centers and office space. We also have land leases, including those on which certain facilities are located.
    Operating and financing lease right-of-use assets and lease liabilities as of March 31, 2025 and December 31, 2024 are as follows:
    DESCRIPTIONMARCH 31, 2025DECEMBER 31, 2024
    Assets:
    Operating lease right-of-use assets$2,386,511 $2,489,893 
    Financing lease right-of-use assets, net of accumulated depreciation(1)
    371,912 359,265 
    Liabilities:
    Current
    Operating lease liabilities$329,237 $315,400 
    Financing lease liabilities(1)
    130,980 128,397 
    Long-term
    Operating lease liabilities$2,224,080 $2,334,826 
    Financing lease liabilities(1)
    292,185 278,444 
    (1)Financing lease right-of-use assets, current financing lease liabilities and long-term financing lease liabilities are included within Property, plant and equipment, net, Current portion of long-term debt and Long-term debt, net of current portion, respectively, within our Condensed Consolidated Balance Sheets.
    The components of the lease expense for the three months ended March 31, 2025 and 2024 are as follows:
    THREE MONTHS ENDED MARCH 31,
    DESCRIPTION20252024
    Operating lease cost(1)
    $173,308 $171,746 
    Financing lease cost:
    Depreciation of financing lease right-of-use assets$13,732 $10,944 
    Interest expense for financing lease liabilities6,129 5,221 
    (1)Operating lease cost, the majority of which is included in Cost of sales, includes variable lease costs of $46,405 and $38,094 for the three months ended March 31, 2025 and 2024, respectively.
    Other information: Supplemental cash flow information relating to our leases for the three months ended March 31, 2025 and 2024 is as follows:
    THREE MONTHS ENDED MARCH 31,
    CASH PAID FOR AMOUNTS INCLUDED IN MEASUREMENT OF LEASE LIABILITIES:20252024
    Operating cash flows used in operating leases$119,511 $117,336 
    Operating cash flows used in financing leases (interest)6,129 5,221 
    Financing cash flows used in financing leases13,348 10,679 
    NON-CASH ITEMS:
    Operating lease modifications and reassessments$(85,512)$(262)
    New operating leases (including acquisitions)38,417 64,556 
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    D. GOODWILL
    Our reporting units as of December 31, 2024 are described in detail in Note 2.l. to Notes to Consolidated Financial Statements included in our Annual Report.
    The changes in the carrying value of goodwill attributable to each reportable segment and Corporate and Other (as defined in Note 8) for the three months ended March 31, 2025 are as follows:
    GLOBAL RIM BUSINESSGLOBAL DATA CENTER BUSINESSCORPORATE AND OTHERTOTAL CONSOLIDATED
    Goodwill balance, net of accumulated amortization, as of December 31, 2024
    $3,816,874 $469,461 $797,482 $5,083,817 
    Tax deductible goodwill acquired during the period— — 20,713 20,713 
    Fair value and other adjustments— — (1,259)(1,259)
    Currency effects32,041 5,223 1,275 38,539 
    Goodwill balance, net of accumulated amortization, as of March 31, 2025
    $3,848,915 $474,684 $818,211 $5,141,810 
    Accumulated goodwill impairment balance as of March 31, 2025
    $132,409 $— $26,011 $158,420 
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    E. FAIR VALUE MEASUREMENTS
    The assets and liabilities carried at fair value and measured on a recurring basis as of March 31, 2025 and December 31, 2024 are as follows:
      
    FAIR VALUE MEASUREMENTS AT MARCH 31, 2025 USING
    DESCRIPTION
    TOTAL CARRYING
    VALUE AT
    MARCH 31, 2025
    QUOTED PRICES IN
    ACTIVE MARKETS
    (LEVEL 1)
    SIGNIFICANT OTHER
    OBSERVABLE INPUTS
    (LEVEL 2)
    SIGNIFICANT
    UNOBSERVABLE
    INPUTS (LEVEL 3)(2)
    Money Market Funds$1,674 $— $1,674 $— 
    Time Deposits16,254 — 16,254 — 
    Trading Securities8,272 6,507 1,765 — 
    Derivative Assets7,714 — 7,714 — 
    Derivative Liabilities17,060 — 17,060 — 
    Deferred Purchase Obligations(1)
    106,001 — — 106,001 
      FAIR VALUE MEASUREMENTS AT DECEMBER 31, 2024 USING
    DESCRIPTION
    TOTAL CARRYING
    VALUE AT
    DECEMBER 31, 2024
    QUOTED PRICES IN
    ACTIVE MARKETS
    (LEVEL 1)
    SIGNIFICANT OTHER
    OBSERVABLE INPUTS
    (LEVEL 2)
    SIGNIFICANT
    UNOBSERVABLE
    INPUTS (LEVEL 3)(2)
    Money Market Funds$2,488 $— $2,488 $— 
    Time Deposits9,612 — 9,612 — 
    Trading Securities8,144 6,390 1,754 — 
    Derivative Assets28,092 — 28,092 — 
    Derivative Liabilities5,326 — 5,326 — 
    Deferred Purchase Obligations(1)
    147,055 — — 147,055 
    (1)The balance as of March 31, 2025 primarily relates to the fair value of the deferred purchase obligation associated with the Regency Transaction (as defined in Note 3 to Notes to Consolidated Financial Statements included in our Annual Report). The balance as of December 31, 2024 primarily relates to the fair values of the deferred purchase obligations associated with the Regency Transaction and ITRenew Transaction (as defined in Note 3 to Notes to Consolidated Financial Statements included in our Annual Report).
    (2)The following is a rollforward of the Level 3 liabilities presented above for December 31, 2024 through March 31, 2025:
    Balance as of December 31, 2024
    $147,055 
    Additions2,880 
    Payments(49,215)
    Other changes, including accretion5,281 
    Balance as of March 31, 2025
    $106,001 
    The level 3 valuation of the deferred purchase obligation was determined utilizing a Monte-Carlo model which takes into account our forecasted projections as they relate to the underlying performance of the business. The Monte-Carlo simulation model incorporates assumptions as to expected revenue over the achievement period, including adjustments for volatility and timing, as well as discount rates that account for the risk of the arrangement and overall market risks. Any material change to these assumptions may result in a significantly higher or lower fair value of the deferred purchase obligation.
    There were no material items that were measured at fair value on a non-recurring basis at March 31, 2025 and December 31, 2024 other than those disclosed in Note 2.p. to Notes to Consolidated Financial Statements included in our Annual Report.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    F. ACCUMULATED OTHER COMPREHENSIVE ITEMS, NET
    The changes in Accumulated other comprehensive items, net for the three months ended March 31, 2025 and 2024 are as follows:
    THREE MONTHS ENDED MARCH 31, 2025
    THREE MONTHS ENDED MARCH 31, 2024
     FOREIGN
    CURRENCY
    TRANSLATION AND OTHER
    ADJUSTMENTS
    DERIVATIVE FINANCIAL
    INSTRUMENTS
    TOTALFOREIGN
    CURRENCY
    TRANSLATION AND OTHER
    ADJUSTMENTS
    DERIVATIVE FINANCIAL
    INSTRUMENTS
    TOTAL
    Beginning of Period$(568,129)$(1,823)$(569,952)$(373,628)$2,472 $(371,156)
    Other comprehensive income (loss):
    Foreign currency translation and other adjustments74,576 — 74,576 (66,501)— (66,501)
    Change in fair value of interest rate swaps— (6,993)(6,993)— 11,388 11,388 
    Reclassifications from accumulated other comprehensive items, net— — — — (2,528)(2,528)
    Total other comprehensive income (loss)74,576 (6,993)67,583 (66,501)8,860 (57,641)
    End of Period$(493,553)$(8,816)$(502,369)$(440,129)$11,332 $(428,797)
    G. REVENUES
    Certain costs to fulfill or obtain customer contracts, including the costs associated with the initial movement of customer records into physical storage and certain commission expenses, and certain initial direct costs of obtaining data center leases are collectively referred to as "Contract Costs". Contract Costs are primarily made up of Intake Costs and Commissions (each as defined in Note 2.s. to Notes to Consolidated Financial Statements included in our Annual Report). Contract Costs as of March 31, 2025 and December 31, 2024 are as follows:
    MARCH 31, 2025DECEMBER 31, 2024
    DESCRIPTIONGROSS
    CARRYING
    AMOUNT
    ACCUMULATED
    AMORTIZATION
    NET
    CARRYING
    AMOUNT
    GROSS
    CARRYING
    AMOUNT
    ACCUMULATED
    AMORTIZATION
    NET
    CARRYING
    AMOUNT
    Intake Costs asset$92,832 $(44,830)$48,002 $89,057 $(43,783)$45,274 
    Commissions asset212,688 (83,943)128,745 200,149 (78,955)121,194 
    Deferred revenue liabilities are reflected in our Condensed Consolidated Balance Sheets as follows:
    DESCRIPTIONLOCATION IN BALANCE SHEETMARCH 31, 2025
    DECEMBER 31, 2024(1)
    Deferred revenue—Current(2)
    Deferred revenue$333,171 $326,882 
    Deferred revenue—Long-term(3)
    Other Long-term Liabilities118,129 110,601 
    (1)    The beginning balance of current and long-term deferred revenue for the year ended December 31, 2024 was $325,665 and $100,770, respectively.
    (2)    The current deferred revenue accounted for under Accounting Standards Codification 842, Leases ("ASC 842") is approximately $21,200 and $25,500 as of March 31, 2025 and December 31, 2024, respectively.
    (3)    The long-term deferred revenue accounted for under ASC 842 is approximately $101,600 and $95,000 as of March 31, 2025 and December 31, 2024, respectively.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    DATA CENTER LESSOR CONSIDERATIONS
    Our Global Data Center Business features storage rental provided to customers at contractually specified rates over a fixed contractual period, which are accounted for in accordance with ASC 842. Storage rental revenue associated with our Global Data Center Business for the three months ended March 31, 2025 and 2024 is as follows:
    THREE MONTHS ENDED MARCH 31,
    20252024
    Storage rental revenue$172,945 $140,028 
    H. STOCK-BASED COMPENSATION
    Our stock-based compensation expense includes the cost of stock options, restricted stock units ("RSUs") and performance units ("PUs") (together, the "Employee Stock-Based Awards").
    STOCK-BASED COMPENSATION EXPENSE
    Stock-based compensation expense for the Employee Stock-Based Awards for the three months ended March 31, 2025 and 2024 is as follows:
    THREE MONTHS ENDED MARCH 31,
    20252024
    Stock-based compensation expense$26,094 $14,039 
    On March 1, 2025, we granted approximately 83,389 stock options, 497,089 RSUs and 435,124 PUs under the 2014 Plan (as defined in Note 2.t. to Notes to Consolidated Financial Statements included in our Annual Report).
    As of March 31, 2025, unrecognized compensation cost related to the unvested portion of our Employee Stock-Based Awards, inclusive of our estimated achievement of the performance metrics, is $148,087.
    I. ACQUISITION AND INTEGRATION COSTS
    Acquisition and integration costs represent operating expenditures directly associated with the closing and integration activities of our business acquisitions that have closed, or are highly probable of closing, and include (i) advisory, legal and professional fees to complete business acquisitions and (ii) costs to integrate acquired businesses into our existing operations, including move, severance and system integration costs (collectively, "Acquisition and Integration Costs").
    Acquisition and Integration Costs for the three months ended March 31, 2025 and 2024 are as follows:
    THREE MONTHS ENDED MARCH 31,
    20252024
    Acquisition and Integration Costs$5,823 $7,809 
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    J. LOSS (GAIN) ON DISPOSAL/WRITE-DOWN OF PROPERTY, PLANT AND EQUIPMENT, NET
    Loss (gain) on disposal/write-down of property, plant and equipment, net for the three months ended March 31, 2025 and 2024 is as follows:
    THREE MONTHS ENDED MARCH 31,
    20252024
    Loss (gain) on disposal/write-down of property, plant and equipment, net
    $5,571 $389 
    K. OTHER EXPENSE (INCOME), NET
    Other expense (income), net for the three months ended March 31, 2025 and 2024 consists of the following:
     THREE MONTHS ENDED MARCH 31,
    DESCRIPTION20252024
    Foreign currency transaction losses (gains), net(1)
    $29,663 $(16,379)
    Other, net(1,175)3,849 
    Other Expense (Income), Net
    $28,488 $(12,530)
    (1)The losses for the three months ended March 31, 2025 primarily consist of the impact of changes in the exchange rate of the British pound sterling and the Euro against the United States dollar on our intercompany balances with and between certain of our subsidiaries.
    L. INCOME TAXES
    We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our effective tax rates for the three months ended March 31, 2025 and 2024 are as follows:
     THREE MONTHS ENDED MARCH 31,
    2025(1)
    2024(2)
    Effective Tax Rate47.8 %17.7 %
    (1)The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2025 were the lack of tax benefits recognized for the ordinary losses, disallowed interest expenses of certain entities and losses we recorded in Other expense (income), net during the period, as well as the differences in the tax rates to which our foreign earnings are subject, partially offset by the benefits derived from the dividends paid deduction.
    (2)The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2024 were the benefits derived from the dividends paid deduction and the differences in the tax rates to which our foreign earnings are subject.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    M. INCOME (LOSS) PER SHARE—BASIC AND DILUTED
    The calculations of basic and diluted income (loss) per share for the three months ended March 31, 2025 and 2024 are as follows:
     THREE MONTHS ENDED MARCH 31,
     20252024
    Net Income (Loss)$16,233 $77,025 
    Less: Net Income (Loss) Attributable to Noncontrolling Interests281 2,964 
    Net Income (Loss) Attributable to Iron Mountain Incorporated (utilized in numerator of Earnings Per Share calculation)$15,952 $74,061 
    Weighted-average shares—basic294,507,000 292,746,000 
    Effect of dilutive potential stock options2,162,000 1,886,000 
    Effect of dilutive potential RSUs and PUs591,000 589,000 
    Weighted-average shares—diluted297,260,000 295,221,000 
    Net Income (Loss) Per Share Attributable to Iron Mountain Incorporated:  
     Basic$0.05 $0.25 
     Diluted$0.05 $0.25 
    Antidilutive stock options, RSUs and PUs excluded from the calculation98,685 365,764 
    3. INVESTMENTS
    Our joint venture with AGC Equity Partners (the "Frankfurt JV") is accounted for as an equity method investment and is presented as a component of Other within Other assets, net in our Condensed Consolidated Balance Sheets. The carrying value and equity interest in the Frankfurt JV at March 31, 2025 and December 31, 2024 is as follows:
    MARCH 31, 2025
    DECEMBER 31, 2024
    CARRYING VALUEEQUITY INTERESTCARRYING VALUEEQUITY INTEREST
    Frankfurt JV
    $77,885 20 %$61,075 20 %
    4. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
    Derivative instruments we are party to include: (i) interest rate swap agreements (which are designated as cash flow hedges) and (ii) cross-currency swap agreements (which are designated as net investment hedges).
    INTEREST RATE SWAP AGREEMENTS DESIGNATED AS CASH FLOW HEDGES
    We utilize interest rate swap agreements designated as cash flow hedges to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness. Certain of our interest rate swap agreements have notional amounts that will increase with the underlying hedged transaction. Under our interest rate swap agreements, we receive variable rate interest payments associated with the notional amount of each interest rate swap, based upon the one-month Secured Overnight Financing Rate ("SOFR"), in exchange for the payment of fixed interest rates as specified in the interest rate swap agreements. Our interest rate swap agreements are marked to market at the end of each reporting period, representing the fair values of the interest rate swap agreements, and any changes in fair value are recognized as a component of Accumulated other comprehensive items, net. Unrealized gains are recognized as assets, while unrealized losses are recognized as liabilities.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    4. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (CONTINUED)
    As of March 31, 2025 and December 31, 2024, we have approximately $1,487,000 and $1,482,000, respectively, in notional value outstanding on our interest rate swap agreements. As of March 31, 2025, our interest rate swap agreements have maturity dates ranging from October 2025 through May 2027.
    CROSS-CURRENCY SWAP AGREEMENTS DESIGNATED AS NET INVESTMENT HEDGES
    We utilize cross-currency swaps to hedge the variability of exchange rate impacts between the United States dollar and certain of our foreign functional currencies, including the Euro and the Canadian dollar. As of March 31, 2025, our cross-currency swap agreements have maturity dates ranging from February 2026 through November 2026.
    The notional values of our cross-currency swaps, by currency, as of March 31, 2025 and December 31, 2024, are as follows:
     MARCH 31, 2025DECEMBER 31, 2024
    Euro$509,187 $509,187 
    Canadian dollar350,000 350,000 

    $859,187 $859,187 
    We have designated these cross-currency swap agreements as hedges of net investments in our Euro and Canadian dollar denominated subsidiaries and they require an exchange of the notional amounts at maturity. These cross-currency swap agreements are marked to market at the end of each reporting period, representing the fair values of the cross-currency swap agreements, and any changes in fair value are recognized as a component of Accumulated other comprehensive items, net. Unrealized gains are recognized as assets while unrealized losses are recognized as liabilities. The excluded component of our cross-currency swap agreements is recorded in Accumulated other comprehensive items, net and amortized to interest expense on a straight-line basis.
    The fair values of derivative instruments recognized in our Condensed Consolidated Balance Sheets as of March 31, 2025 and December 31, 2024, by derivative instrument, are as follows:
    MARCH 31, 2025
    DECEMBER 31, 2024
    DERIVATIVE INSTRUMENTS(1)
    ASSETSLIABILITIESASSETSLIABILITIES
    Cash Flow Hedges(2)
      
    Interest rate swap agreements$1,091 $(11,523)$1,887 $(5,326)
    Net Investment Hedges(3)
    Cross-currency swap agreements6,623 (5,537)26,205 — 
    (1)Our derivative assets are included as a component of (i) Prepaid expenses and other or (ii) Other within Other assets, net and our derivative liabilities are included as a component of (i) Accrued expenses and other current liabilities or (ii) Other long-term liabilities in our Condensed Consolidated Balance Sheets. As of March 31, 2025, $1,500 is included within Prepaid expenses and other, $6,214 is included within Other assets, $5,537 is included within Accrued expenses and other current liabilities and $11,523 is included within Other long-term liabilities. As of December 31, 2024, $8,891 is included within Prepaid expenses and other, $19,201 is included within Other assets, and $5,326 is included within Other long-term liabilities.
    (2)As of March 31, 2025, cumulative net losses recorded within Accumulated other comprehensive items, net associated with our interest rate swap agreements are $8,816.
    (3)As of March 31, 2025, cumulative net gains recorded within Accumulated other comprehensive items, net associated with our cross-currency swap agreements are $52,164, which include $51,078 related to the excluded component of our cross-currency swap agreements.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
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    Table of Contents
    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    4. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (CONTINUED)
    Unrealized (losses) gains recognized in Accumulated other comprehensive items, net during the three months ended March 31, 2025 and 2024, by derivative instrument, are as follows:
    THREE MONTHS ENDED MARCH 31,
    DERIVATIVE INSTRUMENTS20252024
    Cash Flow Hedges 
    Interest rate swap agreements$(6,993)$11,388 
    Net Investment Hedges
    Cross-currency swap agreements(25,119)8,312 
    Cross-currency swap agreements (excluded component)4,176 4,176 
    (Losses) gains recognized in Net income (loss) during the three months ended March 31, 2025 and 2024, by derivative instrument, are as follows:
    THREE MONTHS ENDED MARCH 31,
    DERIVATIVE INSTRUMENTSLOCATION OF (LOSS) GAIN20252024
    Cash Flow Hedges
    Interest rate swap agreementsInterest expense$— $2,528 
    Net Investment Hedges
    Cross-currency swap agreements (excluded component)Interest expense(4,176)(4,176)
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    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    5. DEBT
    Long-term debt is as follows:
     MARCH 31, 2025DECEMBER 31, 2024
     
    DEBT
    (INCLUSIVE OF
    DISCOUNT)
    UNAMORTIZED
    DEFERRED
    FINANCING
    COSTS
    CARRYING
    AMOUNT
    FAIR
    VALUE
    DEBT
    (INCLUSIVE OF
    DISCOUNT)
    UNAMORTIZED
    DEFERRED
    FINANCING
    COSTS
    CARRYING
    AMOUNT
    FAIR
    VALUE
    Revolving Credit Facility(1)
    $1,073,000 $(8,788)$1,064,212 $1,073,000 $121,000 $(9,253)$111,747 $121,000 
    Term Loan A(1)
    213,281 — 213,281 213,281 216,016 — 216,016 216,016 
    Term Loan B due 2031(1)
    1,835,940 (14,059)1,821,881 1,846,025 1,840,181 (14,690)1,825,491 1,850,698 
    Virginia 3 Term Loans(2)
    271,079 (2,519)268,560 271,079 271,079 (3,013)268,066 271,079 
    Virginia 4/5 Term Loans(2)
    138,747 (1,900)136,847 138,747 76,535 (2,752)73,783 76,535 
    Virginia 6 Term Loans(2)
    179,410 (4,112)175,298 179,410 137,495 (4,605)132,890 137,495 
    Virginia 7 Term Loans(2)
    107,337 (7,022)100,315 107,337 32,074 (7,591)24,483 32,074 
    Australian Dollar Term Loan(2)
    176,251 (230)176,021 176,979 175,813 (265)175,548 176,655 
    UK Bilateral Revolving Credit Facility(2)
    181,099 (992)180,107 181,099 175,503 (1,034)174,469 175,503 
    GBP Notes(2)
    517,424 (570)516,854 509,016 501,437 (789)500,648 490,155 
    47/8% Notes due 2027(2)
    1,000,000 (3,555)996,445 976,250 1,000,000 (3,910)996,090 972,500 
    51/4% Notes due 2028(2)
    825,000 (3,543)821,457 804,375 825,000 (3,838)821,162 804,375 
    5% Notes due 2028(2)
    500,000 (2,412)497,588 481,250 500,000 (2,592)497,408 481,250 
    7% Notes due 2029(2)
    1,000,000 (8,154)991,846 1,015,000 1,000,000 (8,686)991,314 1,020,000 
    47/8% Notes due 2029(2)
    1,000,000 (6,510)993,490 950,000 1,000,000 (6,871)993,129 945,000 
    51/4% Notes due 2030(2)
    1,300,000 (8,023)1,291,977 1,239,875 1,300,000 (8,399)1,291,601 1,235,000 
    41/2% Notes(2)
    1,100,000 (7,363)1,092,637 1,003,750 1,100,000 (7,674)1,092,326 1,001,000 
    5% Notes due 2032(2)
    750,000 (9,574)740,426 688,125 750,000 (9,900)740,100 688,125 
    55/8% Notes(2)
    600,000 (4,259)595,741 571,500  600,000 (4,404)595,596 570,000 
    61/4% Notes(2)
    1,200,000 (14,089)1,185,911 1,185,000 1,200,000 (14,517)1,185,483 1,194,000 
    Real Estate Mortgages, Financing Lease Liabilities and Other655,796 (1,694)654,102 655,796 614,231 (1,825)612,406 614,231 
    Accounts Receivable Securitization Program400,000 (600)399,400 400,000 400,000 (670)399,330 400,000 
    Total Long-term Debt15,024,364 (109,968)14,914,396  13,836,364 (117,278)13,719,086 
    Less Current Portion(736,922)— (736,922) (715,109)— (715,109) 
    Long-term Debt, Net of Current Portion$14,287,442 $(109,968)$14,177,474  $13,121,255 $(117,278)$13,003,977  
    (1)Collectively, the “Credit Agreement”. The Credit Agreement consists of a revolving credit facility (the “Revolving Credit Facility”), a term loan A facility (the “Term Loan A”) and a term loan B facility (the "Term Loan B due 2031"). The remaining amount available for borrowing under the Revolving Credit Facility as of March 31, 2025 was $1,669,594 (which represents the maximum availability as of such date). The weighted average interest rate in effect under the Revolving Credit Facility was 6.6% as of March 31, 2025.
    (2)Each as defined in Note 7 to Notes to Consolidated Financial Statements included in our Annual Report.
    See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding our long-term debt, including the direct obligors of each of our debt instruments as well as information regarding the fair value of our debt instruments (including the levels of the fair value hierarchy used to determine the fair value of our debt instruments, which are consistent with the levels of the fair value hierarchy used to determine the fair value of our debt as of March 31, 2025).
    LETTERS OF CREDIT
    As of March 31, 2025, we have outstanding letters of credit totaling $63,788, of which $7,406 reduce our borrowing capacity under the Revolving Credit Facility. The letters of credit expire at various dates between April 2025 and May 2027.
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    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)    
    5. DEBT (CONTINUED)
    DEBT COVENANTS
    The Credit Agreement, our bond indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take other specified corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our bond indentures or other agreements governing our indebtedness. The Credit Agreement requires that we satisfy a net total lease adjusted leverage ratio and a fixed charge coverage ratio on a quarterly basis, and our bond indentures require that, among other things, we satisfy a leverage ratio (not lease adjusted) or a fixed charge coverage ratio (not lease adjusted) as a condition to taking actions such as paying dividends and incurring indebtedness.
    The Credit Agreement uses earnings before interest, taxes, depreciation and amortization and rent expense ("EBITDAR")-based calculations and the bond indentures use earnings before interest, taxes, depreciation and amortization ("EBITDA")-based calculations as the primary measures of financial performance for purposes of calculating leverage and fixed charge coverage ratios. The EBITDAR- and EBITDA-based leverage calculations include our consolidated subsidiaries, other than those we have designated as "Unrestricted Subsidiaries" as defined in the Credit Agreement and bond indentures. Generally, the Credit Agreement and the bond indentures use a trailing four fiscal quarter basis for purposes of the relevant calculations and require certain adjustments and exclusions for purposes of those calculations, which make the calculation of financial performance for purposes of those calculations under the Credit Agreement and bond indentures not directly comparable to Adjusted EBITDA as presented herein. We are in compliance with our leverage and fixed charge coverage ratios under the Credit Agreement, our bond indentures and other agreements governing our indebtedness as of March 31, 2025. Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.
    6. COMMITMENTS AND CONTINGENCIES
    We are involved in litigation from time to time in the ordinary course of business, including litigation arising from damage to customer assets in our facilities caused by fires and other natural disasters. While the outcome of litigation is inherently uncertain, we do not believe any current litigation will have a material adverse effect on our consolidated financial condition, results of operations or cash flows.
    7. STOCKHOLDERS' EQUITY MATTERS
    DIVIDENDS
    In fiscal year 2024 and the three months ended March 31, 2025, our board of directors declared the following dividends:
    DECLARATION DATEDIVIDEND
    PER SHARE
    RECORD DATETOTAL
    AMOUNT
    PAYMENT DATE
    February 22, 20240.6500 March 15, 2024190,506 April 4, 2024
    May 2, 20240.6500 June 17, 2024190,643 July 5, 2024
    August 1, 20240.7150 September 16, 2024209,776 October 3, 2024
    November 6, 20240.7150 December 16, 2024209,913 January 7, 2025
    February 13, 20250.7850 March 17, 2025231,549 April 4, 2025
    On May 1, 2025, we declared a dividend to our stockholders of record as of June 16, 2025 of $0.785 per share, payable on July 3, 2025.
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    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    8. SEGMENT INFORMATION
    Our Chief Operating Decision Maker (“CODM”), our President and CEO, uses Adjusted EBITDA as the basis for evaluating the performance of, and allocating resources to, our operating segments. The CODM uses Adjusted EBITDA to ensure that resources, including capital, are allocated strategically to support our strategy.
    Our reportable segments as of December 31, 2024 are described in Note 11 to Notes to Consolidated Financial Statements included in our Annual Report. Our reportable segments are as follows:
    •Global RIM Business
    •Global Data Center Business
    The remaining activities of our business consist primarily of our Fine Arts and asset lifecycle management ("ALM") businesses and other corporate items ("Corporate and Other").
    The operations associated with acquisitions completed during the first three months of 2025 have been incorporated into Corporate and Other.
    An analysis of our business segment information and reconciliation to the accompanying Condensed Consolidated Financial Statements for the three months ended March 31, 2025 and 2024 is as follows:
    GLOBAL RIM BUSINESSGLOBAL
    DATA CENTER BUSINESS
    TOTAL REPORTABLE SEGMENTSCORPORATE 
    AND OTHER
    TOTAL
    CONSOLIDATED
    For the Three Months Ended March 31, 2025
       
    Total Revenues$1,255,942 $173,197 $1,429,139 $163,390 $1,592,529 
    Storage Rental757,508 172,945 930,453 17,923 948,376 
    Service498,434 252 498,686 145,467 644,153 
    Other Segment Items(1)
    699,628 82,381 782,009 
    Adjusted EBITDA556,314 90,816 647,130 
    Total Assets(2)
    10,263,140 6,641,688 16,904,828 2,457,259 19,362,087 
    For the Three Months Ended March 31, 2024
       
    Total Revenues$1,210,157 $143,937 $1,354,094 $122,769 $1,476,863 
    Storage Rental728,984 140,028 869,012 15,830 884,842 
    Service481,173 3,909 485,082 106,939 592,021 
    Other Segment Items(1)
    683,889 82,369 766,258 
    Adjusted EBITDA526,268 61,568 587,836 
    Total Assets(2)
    10,706,306 5,000,981 15,707,287 2,122,269 17,829,556 
    (1)Relates to Cost of sales (excluding depreciation and amortization) and Selling, general and administrative expenses for the respective reportable segment. The CODM does not regularly review disaggregated expense information included within “Other Segment Items” for any individual segments but may review consolidated Cost of sales (excluding depreciation and amortization) and consolidated Selling, general and administrative expense information to manage the business.
    (2)Excludes all intercompany receivables or payables and investment in subsidiary balances.
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    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    8. SEGMENT INFORMATION (CONTINUED)
    A reconciliation of Adjusted EBITDA for our reportable segments to total Net Income (Loss) Before Provision (Benefit) for Income Taxes for the three months ended March 31, 2025 and 2024 is as follows:
     THREE MONTHS ENDED MARCH 31,
    20252024
    Total Adjusted EBITDA for Reportable Segments$647,130 $587,836 
    Add/(Deduct):
    Corporate and other(67,224)(68,981)
    Interest expense, net(194,738)(164,519)
    Depreciation and amortization(232,154)(209,555)
    Acquisition and Integration Costs(5,823)(7,809)
    Restructuring and other transformation(54,746)(40,767)
    (Loss) gain on disposal/write-down of property, plant and equipment, net (including real estate)(5,571)(389)
    Other (expense) income, net, excluding our share of (losses) gains from our unconsolidated joint ventures(27,382)13,110 
    Stock-based compensation expense(26,094)(14,039)
    Our share of Adjusted EBITDA reconciling items from our unconsolidated joint ventures(2,330)(1,253)
    Total Net Income (Loss) Before Provision (Benefit) for Income Taxes$31,068 $93,634 

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    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    8. SEGMENT INFORMATION (CONTINUED)
    Segment revenue by product and service lines for the three months ended March 31, 2025 and 2024 is as follows:
    THREE MONTHS ENDED MARCH 31,
    20252024
    Global RIM Business
    Records Management(1)
    $991,827 $936,652 
    Data Management(1)
    122,087 132,050 
    Information Destruction(1)(2)
    142,028 141,455 
    Data Center(1)
    — — 
    Global Data Center Business
    Records Management(1)
    $— $— 
    Data Management(1)
    — — 
    Information Destruction(1)
    — — 
    Data Center(1)
    173,197 143,937 
    Corporate and Other
    Records Management(1)
    $42,787 $39,072 
    Data Management(1)
    — — 
    Information Destruction(1)(3)
    120,603 83,697 
    Data Center(1)
    — — 
    Total Consolidated
    Records Management(1)
    $1,034,614 $975,724 
    Data Management(1)
    122,087 132,050 
    Information Destruction(1)(2)(3)
    262,631 225,152 
    Data Center(1)
    173,197 143,937 
    (1)Each of these offerings has a component of revenue that is storage rental related and a component that is service related, except for information destruction, which does not have a storage rental component.
    (2)Information destruction revenue for our Global RIM Business includes secure shredding services.
    (3)Information destruction revenue for Corporate and Other includes product revenue from our ALM business.
    9. RELATED PARTIES
    We have agreements with the Frankfurt JV whereby we earn various fees, including (i) special project revenue and (ii) property management and construction and development fees for services we are providing to the Frankfurt JV (the "Frankfurt JV Agreements").
    Revenue recognized in the accompanying Condensed Consolidated Statements of Operations under these agreements for the three months ended March 31, 2025 and 2024 is as follows (approximately):
     THREE MONTHS ENDED MARCH 31,
    20252024
    Frankfurt JV Agreements(1)
    $— $400 
    (1)Revenue associated with the Frankfurt JV Agreements is presented as a component of our Global Data Center Business segment.
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    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    10. RESTRUCTURING AND OTHER TRANSFORMATION
    PROJECT MATTERHORN
    In September 2022, we announced Project Matterhorn. Project Matterhorn investments focus on transforming our operating model to a global operating model. Project Matterhorn focuses on the formation of a solution-based sales approach that is designed to allow us to optimize our shared services and best practices to better serve our customers' needs. We are investing to accelerate growth and to capture a greater share of the large, global addressable markets in which we operate. We have incurred approximately $433,300 in Restructuring and other transformation costs from the inception of Project Matterhorn through March 31, 2025. We expect to incur approximately $150,000 in costs related to Project Matterhorn during the year ended December 31, 2025, at which point the program is expected to be completed. Costs are comprised of (1) restructuring costs, which include (i) site consolidation and other related exit costs, (ii) employee severance costs and (iii) certain professional fees associated with these activities, and (2) other transformation costs, which include professional fees such as project management costs and costs for third party consultants who are assisting in the enablement of our growth initiatives.
    Restructuring and other transformation related to Project Matterhorn included in the accompanying Condensed Consolidated Statements of Operations for the three months ended March 31, 2025 and 2024, and from the inception of Project Matterhorn through March 31, 2025, is as follows:
    THREE MONTHS ENDED MARCH 31, 2025THREE MONTHS ENDED MARCH 31, 2024FROM INCEPTION
    THROUGH
    MARCH 31, 2025
    Restructuring$21,856 $10,726 $143,549 
    Other transformation32,890 30,041 289,704 
    Restructuring and other transformation
    $54,746 $40,767 $433,253 
    Restructuring costs for Project Matterhorn, included as a component of Restructuring and other transformation in the accompanying Condensed Consolidated Statements of Operations, by segment, for the three months ended March 31, 2025 and 2024, and from the inception of Project Matterhorn through March 31, 2025, is as follows:
    THREE MONTHS ENDED MARCH 31, 2025THREE MONTHS ENDED MARCH 31, 2024FROM INCEPTION
    THROUGH
    MARCH 31, 2025
    Global RIM Business$20,726 $10,141 $122,661 
    Global Data Center Business— 4 3,576 
    Corporate and Other1,130 581 17,312 
    Total restructuring costs
    $21,856 $10,726 $143,549 
    Other transformation costs for Project Matterhorn, included as a component of Restructuring and other transformation in the accompanying Condensed Consolidated Statements of Operations, by segment, for the three months ended March 31, 2025 and 2024, and from the inception of Project Matterhorn through March 31, 2025, is as follows:
    THREE MONTHS ENDED MARCH 31, 2025THREE MONTHS ENDED MARCH 31, 2024FROM INCEPTION
    THROUGH
    MARCH 31, 2025
    Global RIM Business$11,063 $8,970 $81,670 
    Global Data Center Business1,283 1,391 11,103 
    Corporate and Other20,544 19,680 196,931 
    Total other transformation costs
    $32,890 $30,041 $289,704 
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    Part I. Financial Information
    IRON MOUNTAIN INCORPORATED
    NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
    (In thousands, except share and per share data) (Unaudited)
    10. RESTRUCTURING AND OTHER TRANSFORMATION (CONTINUED)
    The rollforward of the accrued restructuring costs and accrued other transformation costs, which are included as components of Accrued expenses and other current liabilities in our Condensed Consolidated Balance Sheets, for December 31, 2024 through March 31, 2025 is as follows:
    RESTRUCTURINGOTHER TRANSFORMATIONTOTAL RESTRUCTURING AND OTHER TRANSFORMATION
    Balance as of December 31, 2024
    $6,974 $13,004 $19,978 
    Amount accrued21,856 32,890 54,746 
    Payments(13,013)(25,537)(38,550)
    Balance as of March 31, 2025
    $15,817 $20,357 $36,174 
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    Part I. Financial Information
    ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
    The following discussion and analysis of our financial condition and results of operations for the three months ended March 31, 2025 should be read in conjunction with our Condensed Consolidated Financial Statements and Notes thereto for the three months ended March 31, 2025, included herein, and our Consolidated Financial Statements and Notes thereto for the year ended December 31, 2024, included in our Annual Report on Form 10-K filed with the United States Securities and Exchange Commission ("SEC") on February 14, 2025 (our "Annual Report").
    FORWARD-LOOKING STATEMENTS
    We have made statements in this Quarterly Report that constitute "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995 and other securities laws. These forward-looking statements concern our current expectations regarding our future results from operations, economic performance, financial condition, goals, strategies, investment objectives, plans and achievements. These forward-looking statements are subject to various known and unknown risks, uncertainties and other factors, and you should not rely upon them except as statements of our present intentions and of our present expectations, which may or may not occur. When we use words such as "believes", "expects", "anticipates", "estimates", "plans", "intends", "pursue", "will" or similar expressions, we are making forward-looking statements. Although we believe that our forward-looking statements are based on reasonable assumptions, our expected results may not be achieved, and actual results may differ materially from our expectations. In addition, important factors that could cause actual results to differ from expectations include, among others:
    •our ability or inability to execute our strategic growth plan, including our ability to invest according to plan, grow our businesses (including through joint ventures or other co-investment vehicles), incorporate alternative technologies (including artificial intelligence) into our offerings, achieve satisfactory returns on new product offerings, continue our revenue management, expand and manage our global operations, complete acquisitions on satisfactory terms, integrate acquired companies efficiently and transition to more sustainable sources of energy;
    •changes in customer preferences and demand for our storage and information management services, including as a result of the shift from paper and tape storage to alternative technologies that require less physical space or services activity;
    •the costs of complying with and our ability to comply with laws, regulations and customer requirements, including those relating to data privacy and cybersecurity issues, as well as fire and safety and environmental standards;
    •the impact of attacks on our internal information technology ("IT") systems, including the impact of such incidents on our reputation and ability to compete and any litigation or disputes that may arise in connection with such incidents;
    •our ability to fund capital expenditures;
    •the impact of our distribution requirements on our ability to execute our business plan;
    •our ability to remain qualified for taxation as a real estate investment trust for United States federal income tax purposes ("REIT");
    •changes in the political and economic environments in the countries in which we operate and changes in the global political climate;
    •our ability to raise debt or equity capital and changes in the cost of our debt;
    •our ability to comply with our existing debt obligations and restrictions in our debt instruments;
    •the impact of service interruptions or equipment damage and the cost of power on our data center operations;
    •the cost or potential liabilities associated with real estate necessary for our business;
    •unexpected events, including those resulting from climate change or geopolitical events, could disrupt our operations and adversely affect our reputation and results of operations;
    •failures to implement and manage new IT systems;
    •other trends in competitive or economic conditions affecting our financial condition or results of operations not presently contemplated; and
    •the other risks described in our periodic reports filed with the SEC, including under the caption "Risk Factors" in Part I, Item 1A of our Annual Report.

    Except as required by law, we undertake no obligation to update any forward-looking statements appearing in this report.
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    Part I. Financial Information
    OVERVIEW
    The following discussions set forth, for the periods indicated, management's discussion and analysis of financial condition and results of operations. Significant trends and changes are discussed for the three months ended March 31, 2025 within each section.
    PROJECT MATTERHORN
    In September 2022, we announced a global program designed to accelerate the growth of our business ("Project Matterhorn"). Project Matterhorn investments focus on transforming our operating model to a global operating model. Project Matterhorn focuses on the formation of a solution-based sales approach that is designed to allow us to optimize our shared services and best practices to better serve our customers' needs. We are investing to accelerate growth and to capture a greater share of the large, global addressable markets in which we operate. We have incurred approximately $433.3 million in Restructuring and other transformation costs from the inception of Project Matterhorn through March 31, 2025. We expect to incur approximately $150.0 million in costs related to Project Matterhorn during the year ended December 31, 2025, at which point the program is expected to be completed. Costs are comprised of (1) restructuring costs, which include (i) site consolidation and other related exit costs, (ii) employee severance costs and (iii) certain professional fees associated with these activities, and (2) other transformation costs, which include professional fees such as project management costs and costs for third party consultants who are assisting in the enablement of our growth initiatives.
    See Note 10 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for more information on Restructuring and other transformation costs.
    GENERAL
    RESULTS OF OPERATIONS—KEY TRENDS
    •Our organic storage rental revenue growth is primarily driven by revenue management in our Global RIM Business segment, where we expect volume to be relatively stable in the near term, as well as by growth in our Global Data Center Business segment, primarily driven by lease commencements.
    •Our organic service revenue growth is primarily due to increases in our service activity. We expect organic service revenue growth in 2025 to benefit from our new and existing digital offerings and asset lifecycle management ("ALM") business, as well as our traditional services.
    •We expect continued total revenue and Adjusted earnings before interest, taxes, depreciation and amortization ("EBITDA") growth in 2025 as a result of our focus on new product and service offerings, innovation, customer solutions and market expansion in line with our Project Matterhorn objectives.
    Cost of sales (excluding depreciation and amortization) and Selling, general and administrative expenses for the three months ended March 31, 2025 consists of the following:
    COST OF SALESSELLING, GENERAL AND ADMINISTRATIVE EXPENSES
    03 PRO013518_pie_general_COS.jpg
    03 PRO013518_pie_general_SGA.jpg
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    Part I. Financial Information
    NON-GAAP MEASURES
    ADJUSTED EBITDA
    We define Adjusted EBITDA as net income (loss) before interest expense, net, provision (benefit) for income taxes, depreciation and amortization (inclusive of our share of Adjusted EBITDA from our unconsolidated joint ventures), and excluding certain items we do not believe to be indicative of our core operating results, specifically:
    EXCLUDED
    •Acquisition and Integration Costs (as defined below)
    •Restructuring and other transformation
    •Loss (gain) on disposal/write-down of property, plant and equipment, net (including real estate)
    •Other expense (income), net
    •Stock-based compensation expense
    •Intangible impairments
    Adjusted EBITDA Margin is calculated by dividing Adjusted EBITDA by total revenues. We also show Adjusted EBITDA and Adjusted EBITDA Margin for each of our reportable segments under "Results of Operations – Segment Analysis" below.
    p27_callout_ProjectedAdjustedEBITDA.jpg
    Adjusted EBITDA excludes both interest expense, net and the provision (benefit) for income taxes. These expenses are associated with our capitalization and tax structures, which we do not consider when evaluating the operating profitability of our core operations. Adjusted EBITDA does not include depreciation and amortization expenses, in order to eliminate the impact of capital investments, which we evaluate by comparing capital expenditures to incremental revenue generated and as a percentage of total revenues. Adjusted EBITDA and Adjusted EBITDA Margin should be considered in addition to, but not as a substitute for, other measures of financial performance reported in accordance with accounting principles generally accepted in the United States of America ("GAAP"), such as operating income, net income (loss) or cash flows from operating activities.
    RECONCILIATION OF NET INCOME (LOSS) TO ADJUSTED EBITDA (IN THOUSANDS):
    THREE MONTHS ENDED MARCH 31,
    20252024
    Net Income (Loss)$16,233 $77,025 
    Add/(Deduct):
    Interest expense, net194,738 164,519 
    Provision (benefit) for income taxes14,835 16,609 
    Depreciation and amortization232,154 209,555 
    Acquisition and Integration Costs(1)
    5,823 7,809 
    Restructuring and other transformation54,746 40,767 
    Loss (gain) on disposal/write-down of property, plant and equipment, net (including real estate)
    5,571 389 
    Other expense (income), net, excluding our share of losses (gains) from our unconsolidated joint ventures
    27,382 (13,110)
    Stock-based compensation expense26,094 14,039 
    Our share of Adjusted EBITDA reconciling items from our unconsolidated joint ventures2,330 1,253 
    Adjusted EBITDA$579,906 $518,855 
    (1)Represent operating expenditures directly associated with the closing and integration activities of our business acquisitions that have closed, or are highly probable of closing, and include (i) advisory, legal and professional fees to complete business acquisitions and (ii) costs to integrate acquired businesses into our existing operations, including move, severance and system integration costs (collectively, "Acquisition and Integration Costs").

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    Part I. Financial Information
    ADJUSTED EPS
    We define Adjusted EPS as reported earnings per share fully diluted from net income (loss) attributable to Iron Mountain Incorporated (inclusive of our share of adjusted losses (gains) from our unconsolidated joint ventures) and excluding certain items, specifically:
    EXCLUDED
    •Acquisition and Integration Costs
    •Restructuring and other transformation
    •Loss (gain) on disposal/write-down of property, plant and equipment, net (including real estate)
    •Other expense (income), net
    •Stock-based compensation expense
    •Non-cash amortization related to derivative instruments
    •Tax impact of reconciling items and discrete tax items
    •Amortization related to the write-off of certain customer relationship intangible assets
    We do not believe these excluded items to be indicative of our ongoing operating results, and they are not considered when we are forecasting our future results. We believe Adjusted EPS is of value to our current and potential investors when comparing our results from past, present and future periods.
    RECONCILIATION OF REPORTED EPS—FULLY DILUTED FROM NET INCOME (LOSS) ATTRIBUTABLE TO IRON MOUNTAIN INCORPORATED TO ADJUSTED EPS—FULLY DILUTED FROM NET INCOME (LOSS) ATTRIBUTABLE TO IRON MOUNTAIN INCORPORATED:
    THREE MONTHS ENDED MARCH 31,
    20252024
    Reported EPS—Fully Diluted from Net Income (Loss) Attributable to Iron Mountain Incorporated
    $0.05 $0.25 
    Add/(Deduct):
    Acquisition and Integration Costs0.02 0.03 
    Restructuring and other transformation0.18 0.14 
    Loss (gain) on disposal/write-down of property, plant and equipment, net (including real estate)
    0.02 — 
    Other expense (income), net, excluding our share of losses (gains) from our unconsolidated joint ventures
    0.09 (0.04)
    Stock-based compensation expense0.09 0.05 
    Non-cash amortization related to derivative instruments0.01 0.01 
    Tax impact of reconciling items and discrete tax items(1)
    (0.04)(0.01)
    Income (Loss) Attributable to Noncontrolling Interests— 0.01 
    Adjusted EPS—Fully Diluted from Net Income (Loss) Attributable to Iron Mountain Incorporated(2)
    $0.43 $0.43 
    (1)The differences between our effective tax rates and our structural tax rate (or adjusted effective tax rates) for the three months ended March 31, 2025 and 2024 are primarily due to (i) the reconciling items above, which impact our reported net income (loss) before provision (benefit) for income taxes but have an insignificant impact on our reported provision (benefit) for income taxes and (ii) other discrete tax items. Our structural tax rate for purposes of the calculation of Adjusted EPS for the three months ended March 31, 2025 and 2024 was 17.0% and 13.9%, respectively. The Tax impact of reconciling items and discrete tax items is calculated using the current quarter's estimate of the annual structural tax rate. This may result in the current period adjustment plus prior period reported quarterly adjustments not summing to the full year adjustment.
    (2)Columns may not foot due to rounding.
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    Part I. Financial Information
    FFO (NAREIT) AND FFO (NORMALIZED)
    Funds from operations ("FFO") is defined by the National Association of Real Estate Investment Trusts as net income (loss) excluding depreciation on real estate assets, losses and gains on sale of real estate, net of tax, and amortization of data center leased-based intangibles ("FFO (Nareit)"). We calculate our FFO measures, including FFO (Nareit), adjusting for our share of reconciling items from our unconsolidated joint ventures. FFO (Nareit) does not give effect to real estate depreciation because these amounts are computed, under GAAP, to allocate the cost of a property over its useful life. Because values for well-maintained real estate assets have historically increased or decreased based upon prevailing market conditions, we believe that FFO (Nareit) provides investors with a clearer view of our operating performance. Our most directly comparable GAAP measure to FFO (Nareit) is net income (loss).
    We modify FFO (Nareit), as is common among REITs seeking to provide financial measures that most meaningfully reflect their particular business ("FFO (Normalized)"). Our definition of FFO (Normalized) excludes certain items included in FFO (Nareit) that we believe are not indicative of our core operating results, specifically:
    EXCLUDED
    •Acquisition and Integration Costs
    •Restructuring and other transformation
    •Loss (gain) on disposal/write-down of property, plant and equipment, net (excluding real estate)
    •Other expense (income), net
    •Stock-based compensation expense
    •Non-cash amortization related to derivative instruments
    •Real estate financing lease depreciation
    •Tax impact of reconciling items and discrete tax items
    •Intangible impairments
    •(Income) loss from discontinued operations, net of tax
    RECONCILIATION OF NET INCOME (LOSS) TO FFO (NAREIT) AND FFO (NORMALIZED) (IN THOUSANDS):
    THREE MONTHS ENDED MARCH 31,
    20252024
    Net Income (Loss)$16,233 $77,025 
    Add/(Deduct):
    Real estate depreciation94,147 83,573 
    Loss (gain) on sale of real estate, net of tax312 (1,194)
    Data center lease-based intangible assets amortization2,019 5,576 
    Our share of FFO (Nareit) reconciling items from our unconsolidated joint ventures1,496 441 
    FFO (Nareit)114,207 165,421 
    Add/(Deduct):
    Acquisition and Integration Costs5,823 7,809 
    Restructuring and other transformation54,746 40,767 
    Loss (gain) on disposal/write-down of property, plant and equipment, net (excluding real estate)
    5,292 1,818 
    Other expense (income), net, excluding our share of losses (gains) from our unconsolidated joint ventures(1)
    27,382 (13,110)
    Stock-based compensation expense26,094 14,039 
    Non-cash amortization related to derivative instruments4,176 4,176 
    Real estate financing lease depreciation3,148 2,986 
    Tax impact of reconciling items and discrete tax items(2)
    (11,673)(4,170)
    Our share of FFO (Normalized) reconciling items from our unconsolidated joint ventures(125)41 
    FFO (Normalized)$229,070 $219,777 
    (1)Includes foreign currency transaction losses (gains), net and other, net. See Note 2.k. to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for additional information regarding the components of Other expense (income), net.
    (2)Represents the tax impact of (i) the reconciling items above, which impact our reported net income (loss) before provision (benefit) for income taxes but have an insignificant impact on our reported provision (benefit) for income taxes and (ii) other discrete tax items. Discrete tax items resulted in a provision (benefit) for income taxes of $0.3 million and $1.1 million for the three months ended March 31, 2025 and 2024, respectively.
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    Part I. Financial Information
    CRITICAL ACCOUNTING ESTIMATES
    Our discussion and analysis of our financial condition and results of operations are based upon our Condensed Consolidated Financial Statements, which have been prepared in accordance with GAAP. The preparation of these financial statements requires us to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities at the date of the financial statements and for the period then ended. On an ongoing basis, we evaluate the estimates used. We base our estimates on historical experience, actuarial estimates, current conditions and various other assumptions that we believe to be reasonable under the circumstances. These estimates form the basis for making judgments about the carrying values of assets and liabilities and are not readily apparent from other sources. Actual results may differ from these estimates. Our critical accounting estimates include the following, which are listed in no particular order:
    •Revenue Recognition
    •Accounting for Acquisitions
    •Impairment of Tangible and Intangible Assets
    •Income Taxes
    Further detail regarding our critical accounting estimates can be found in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report, and the Consolidated Financial Statements and the Notes included therein. We have determined that no material changes concerning our critical accounting estimates have occurred since December 31, 2024.
    RESULTS OF OPERATIONS
    COMPARISON OF THE THREE MONTHS ENDED MARCH 31, 2025 TO THE THREE MONTHS ENDED MARCH 31, 2024 (IN THOUSANDS):
    THREE MONTHS ENDED MARCH 31,DOLLAR
    CHANGE
    PERCENTAGE
    CHANGE
    20252024
    Revenues$1,592,529$1,476,863$115,666 7.8 %
    Operating Expenses1,338,2351,231,240106,995 8.7 %
    Operating Income254,294245,6238,671 3.5 %
    Other Expenses, Net238,061168,59869,463 41.2 %
    Net Income (Loss) 16,23377,025(60,792)(78.9)%
    Net Income (Loss) Attributable to Noncontrolling Interests2812,964(2,683)(90.5)%
    Net Income (Loss) Attributable to Iron Mountain Incorporated$15,952$74,061$(58,109)(78.5)%
    Adjusted EBITDA(1)
    $579,906$518,855$61,051 11.8 %
    Adjusted EBITDA Margin(1)
    36.4 %35.1 %
    (1)See "Non-GAAP Measures—Adjusted EBITDA" in this Quarterly Report for the definitions of Adjusted EBITDA and Adjusted EBITDA Margin, reconciliation of Net Income (Loss) to Adjusted EBITDA and a discussion of why we believe these non-GAAP measures provide relevant and useful information to our current and potential investors.
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    Part I. Financial Information
    REVENUES
    Total revenues consist of the following (in thousands):
    THREE MONTHS ENDED MARCH 31,PERCENTAGE CHANGE
    20252024DOLLAR
    CHANGE
    ACTUAL
    CONSTANT
    CURRENCY(1)
    ORGANIC
    GROWTH(2)
    IMPACT OF
    ACQUISITIONS
    Storage Rental$948,376 $884,842 $63,534 7.2 %8.8 %8.8 %— %
    Service 644,153 592,021 52,132 8.8 %10.2 %7.1 %3.1 %
    Total Revenues$1,592,529 $1,476,863 $115,666 7.8 %9.4 %8.1 %1.3 %
    (1)Constant currency growth rate, which is a non-GAAP measure, is calculated by translating the 2024 results at the 2025 average exchange rates.
    (2)Our organic revenue growth rate, which is a non-GAAP measure, represents the year-over-year growth rate of our revenues excluding the impact of business acquisitions, divestitures and foreign currency exchange rate fluctuations. Our organic revenue growth rate includes the impact of acquisitions of customer relationships.
    TOTAL REVENUES
    Primary factors influencing the change in reported storage rental revenue and reported service revenue for the three months ended March 31, 2025 compared to the three months ended March 31, 2024 include the following:
    STORAGE RENTAL REVENUE
    •organic storage rental revenue growth driven by revenue management in our Global RIM Business segment and lease commencements and improved pricing in our Global Data Center Business segment.



    SERVICE REVENUE
    •organic service revenue growth driven by increases in Global Digital Solutions and traditional service activity levels in our Global RIM Business and increased volume in our ALM business; and
    •an increase of $18.3 million due to recent acquisitions in our ALM business.
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    OPERATING EXPENSES
    COST OF SALES
    Cost of sales (excluding depreciation and amortization) consists of the following expenses (in thousands):
    THREE MONTHS ENDED MARCH 31,PERCENTAGE
    CHANGE
    % OF TOTAL REVENUESPERCENTAGE
    CHANGE
    (FAVORABLE)/
    UNFAVORABLE
    20252024DOLLAR
    CHANGE
    ACTUALCONSTANT
    CURRENCY
    20252024
    Labor$273,981 $251,331 $22,650 9.0 %10.8 %17.2 %17.0 %0.2 %
    Facilities287,406 276,827 10,579 3.8 %5.3 %18.0 %18.7 %(0.7)%
    Transportation43,133 45,320 (2,187)(4.8)%(3.7)%2.7 %3.1 %(0.4)%
    Product Cost of Sales and Other105,684 79,777 25,907 32.5 %33.7 %6.6 %5.4 %1.2 %
    Total Cost of sales$710,204 $653,255 $56,949 8.7 %10.3 %44.6 %44.2 %0.4 %
    Primary factors influencing the change in reported Cost of sales for the three months ended March 31, 2025 compared to the three months ended March 31, 2024 include the following:
    •an increase in labor costs driven by an increase in service activity, primarily within our Global RIM and ALM businesses;
    •an increase in facilities expenses, primarily driven by higher real estate taxes in our Global Data Center business; and
    •an increase in product cost of sales and other in our ALM business as a result of higher product volumes.
    SELLING, GENERAL AND ADMINISTRATIVE EXPENSES
    Selling, general and administrative expenses consists of the following expenses (in thousands):
    THREE MONTHS ENDED MARCH 31,PERCENTAGE CHANGE% OF TOTAL REVENUESPERCENTAGE
    CHANGE
    (FAVORABLE)/
    UNFAVORABLE
    20252024DOLLAR
    CHANGE
    ACTUALCONSTANT
    CURRENCY
    20252024
    General, Administrative and Other$242,874 $235,042 $7,832 3.3 %4.5 %15.3 %15.9 %(0.6)%
    Sales, Marketing and Account Management86,863 84,423 2,440 2.9 %4.6 %5.5 %5.7 %(0.2)%
    Total Selling, general and administrative expenses$329,737 $319,465 $10,272 3.2 %4.5 %20.7 %21.6 %(0.9)%
    Primary factors influencing the change in reported Selling, general and administrative expenses for the three months ended March 31, 2025 compared to the three months ended March 31, 2024 include the following:
    •an increase in general, administrative and other expenses, primarily driven by higher compensation expense; and
    •an increase in sales, marketing and account management expenses, primarily driven by higher compensation expense.
    DEPRECIATION AND AMORTIZATION
    Depreciation expense increased by $18.8 million, or 13.1%, for the three months ended March 31, 2025 compared to the prior year period. See Note 2.i. to Notes to Consolidated Financial Statements included in our Annual Report for additional information regarding the useful lives over which our property, plant and equipment is depreciated.
    Amortization expense increased by $3.8 million, or 5.8%, for the three months ended March 31, 2025 compared to the prior year period.
    ACQUISITION AND INTEGRATION COSTS
    Acquisition and Integration Costs for the three months ended March 31, 2025 and 2024 were approximately $5.8 million and $7.8 million, respectively.
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    RESTRUCTURING AND OTHER TRANSFORMATION
    Restructuring and other transformation costs for the three months ended March 31, 2025 and 2024 were $54.7 million and $40.8 million, respectively, and related to operating expenses associated with the implementation of Project Matterhorn.
    LOSS (GAIN) ON DISPOSAL/WRITE-DOWN OF PROPERTY, PLANT AND EQUIPMENT, NET
    Loss (gain) on disposal/write-down of property, plant and equipment, net for the three months ended March 31, 2025 and 2024 was approximately $5.6 million and $0.4 million, respectively.
    OTHER EXPENSES, NET
    INTEREST EXPENSE, NET
    Interest expense, net increased by $30.2 million to $194.7 million in the three months ended March 31, 2025 from $164.5 million in the prior year period. The increase is primarily due to higher average debt outstanding during the three months ended March 31, 2025 compared to the prior year period. Our weighted average interest rate, inclusive of the fees associated with our outstanding letters of credit, was 5.7% at both March 31, 2025 and 2024. See Note 5 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for additional information regarding our indebtedness.
    OTHER EXPENSE (INCOME), NET
    Other expense (income), net for the three months ended March 31, 2025 and 2024 consists of the following (in thousands):
    THREE MONTHS ENDED MARCH 31,DOLLAR
    CHANGE
    DESCRIPTION20252024
    Foreign currency transaction losses (gains), net(1)
    $29,663 $(16,379)$46,042 
    Other, net(1,175)3,849 (5,024)
    Other Expense (Income), Net$28,488 $(12,530)$41,018 
    (1)The losses for the three months ended March 31, 2025 primarily consist of the impact of changes in the exchange rate of the British pound sterling and the Euro against the United States dollar on our intercompany balances with and between certain of our subsidiaries.
    PROVISION FOR INCOME TAXES
    We provide for income taxes during interim periods based on our estimate of the effective tax rate for the year. Our effective tax rates for the three months ended March 31, 2025 and 2024 are as follows:
     THREE MONTHS ENDED MARCH 31,
    20252024
    Effective Tax Rate47.8 %17.7 %
    The primary reconciling items between the federal statutory tax rate of 21.0% and our overall effective tax rate for the three months ended March 31, 2025 were the lack of tax benefits recognized for the ordinary losses, disallowed interest expenses of certain entities and losses we recorded in Other expense (income), net during the period, as well as the differences in the tax rates to which our foreign earnings are subject, partially offset by the benefits derived from the dividends paid deduction.
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    Part I. Financial Information
    NET INCOME (LOSS) AND ADJUSTED EBITDA
    The following table reflects the effect of the foregoing factors on our net income (loss) and Adjusted EBITDA (in thousands):
    THREE MONTHS ENDED MARCH 31,DOLLAR
    CHANGE
    PERCENTAGE CHANGE
    20252024
    Net Income (Loss)$16,233 $77,025 $(60,792)(78.9)%
    Net Income (Loss) as a percentage of Revenue1.0 %5.2 %
    Adjusted EBITDA$579,906 $518,855 $61,051 11.8 %
    Adjusted EBITDA Margin36.4 %35.1 %

    Adjusted EBITDA Margin for the three months ended March 31, 2025 increased 130 basis points from the same prior year period driven by favorable overhead management, offset by changes in our revenue mix.
    ↑ INCREASED BY
    $61.1 MILLION OR 11.8%
    Adjusted EBITDA
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    Part I. Financial Information
    SEGMENT ANALYSIS
    See Note 8 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for a description of our reportable segments.
    GLOBAL RIM BUSINESS (IN THOUSANDS)
    THREE MONTHS ENDED MARCH 31,PERCENTAGE CHANGE
    DOLLAR
    CHANGE
    ACTUALCONSTANT
    CURRENCY
    ORGANIC
    GROWTH
    IMPACT OF ACQUISITIONS
    20252024
    Storage Rental$757,508$728,984$28,524 3.9 %5.7 %5.7 %— %
    Service 498,434481,17317,261 3.6 %5.1 %5.1 %— %
    Segment Revenue$1,255,942$1,210,157$45,785 3.8 %5.5 %5.5 %— %
    Segment Adjusted EBITDA$556,314$526,268$30,046 
    Segment Adjusted EBITDA Margin 44.3 %43.5 %
    THREE MONTHS ENDED YEAR OVER YEAR SEGMENT ANALYSIS: GLOBAL RIM BUSINESS (IN MILLIONS)
    Storage Rental
    Revenue
    Service
    Revenue
    Segment
    Revenue
    Segment Adjusted
    EBITDA
    290291
    Primary factors influencing the change in revenue and Adjusted EBITDA Margin in our Global RIM Business segment for the three months ended March 31, 2025 compared to the prior year period include the following:
    •organic storage rental revenue growth driven by revenue management;
    •organic service revenue growth primarily driven by increases in our Global Digital Solutions business and growth in our traditional service activity levels; and
    •an 80 basis point increase in Adjusted EBITDA Margin primarily driven by ongoing cost containment measures and revenue management.
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    Part I. Financial Information
    GLOBAL DATA CENTER BUSINESS (IN THOUSANDS)
    THREE MONTHS ENDED MARCH 31,PERCENTAGE CHANGE
    DOLLAR
    CHANGE
    ACTUALCONSTANT
    CURRENCY
    ORGANIC
    GROWTH
    IMPACT OF ACQUISITIONS
    20252024
    Storage Rental$172,945$140,028$32,917 23.5 %24.4 %24.4 %— %
    Service2523,909(3,657)(93.6)%(93.5)%(93.5)%— %
    Segment Revenue$173,197$143,937$29,260 20.3 %21.2 %21.2 %— %
    Segment Adjusted EBITDA$90,816$61,568$29,248 
    Segment Adjusted EBITDA Margin52.4 %42.8 %

    THREE MONTHS ENDED YEAR OVER YEAR SEGMENT ANALYSIS: GLOBAL DATA CENTER BUSINESS (IN MILLIONS)
    Storage Rental
    Revenue
    Service
    Revenue
    Segment
    Revenue
    Segment Adjusted
    EBITDA
    149150
    Primary factors influencing the change in revenue and Adjusted EBITDA Margin in our Global Data Center Business segment for the three months ended March 31, 2025 compared to the prior year period include the following:
    •organic storage rental revenue growth from leases that commenced during the first three months of 2025 and in prior periods, improved pricing and increased usage of pass-through power, partially offset by churn of approximately 30 basis points;
    •an increase in Adjusted EBITDA primarily driven by organic storage rental revenue growth; and
    •a 960 basis point increase in Adjusted EBITDA Margin reflecting improved pricing, recent lease commencements and cost containment.
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    Part I. Financial Information
    CORPORATE AND OTHER (IN THOUSANDS)
    THREE MONTHS ENDED MARCH 31,PERCENTAGE CHANGE
    DOLLAR
    CHANGE
    ACTUALCONSTANT
    CURRENCY
    ORGANIC
    GROWTH
    IMPACT OF ACQUISITIONS
    20252024
    Storage Rental$17,923$15,830$2,093 13.2 %13.4 %13.4 %— %
    Service 145,467106,93938,528 36.0 %36.6 %19.5 %17.1 %
    Revenue$163,390$122,769$40,621 33.1 %33.6 %18.7 %14.9 %
    Adjusted EBITDA$(67,224)$(68,981)$1,757  
    Primary factors influencing the change in revenue and Adjusted EBITDA in Corporate and Other (as defined in Note 8 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report) for the three months ended March 31, 2025 compared to the prior year period include the following:
    •an increase in service revenue of $18.3 million due to recent acquisitions in our ALM business;
    •organic service revenue growth in our ALM business driven by increased volume; and
    •an improvement in Adjusted EBITDA driven by service revenue improvement in our ALM business.
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    Part I. Financial Information
    LIQUIDITY AND CAPITAL RESOURCES
    GENERAL
    We expect to meet our short-term and long-term cash flow requirements through cash generated from operations, cash on hand, borrowings under the Credit Agreement (as defined below), as well as other potential financings (such as the issuance of debt). Our cash flow requirements, both in the near and long term, include, but are not limited to, capital expenditures, the repayment of outstanding debt, shareholder dividends, potential business acquisitions and normal business operation needs.
    PROJECT MATTERHORN
    As disclosed above, in September 2022, we announced Project Matterhorn. We have incurred approximately $433.3 million in Restructuring and other transformation costs from the inception of Project Matterhorn through March 31, 2025. We expect to incur approximately $150.0 million in costs related to Project Matterhorn during the year ended December 31, 2025, at which point the program is expected to be completed. During the three months ended March 31, 2025 and 2024, we incurred approximately $54.7 million and $40.8 million, respectively, of Restructuring and other transformation costs related to Project Matterhorn, which are comprised of (1) restructuring costs, which include (i) site consolidation and other related exit costs, (ii) employee severance costs and (iii) certain professional fees associated with these activities and (2) other transformation costs, which include professional fees such as project management costs and costs for third party consultants who are assisting in the enablement of our growth initiatives.
    CASH FLOWS
    The following is a summary of our cash balances and cash flows (in thousands) as of and for the three months ended March 31,
    20252024
    Cash Flows from Operating Activities $197,299 $130,038 
    Cash Flows from Investing Activities (766,766)(525,609)
    Cash Flows from Financing Activities 578,832 362,099 
    Cash and Cash Equivalents, End of Period155,338 191,655 
    A. CASH FLOWS FROM OPERATING ACTIVITIES
    For the three months ended March 31, 2025, net cash flows provided by operating activities increased by $67.3 million compared to the prior year period, primarily due to a decrease in net income (excluding non-cash charges) of $1.1 million and an increase in cash from working capital of $68.4 million, primarily driven by the timing of accrued expenses.
    B. CASH FLOWS FROM INVESTING ACTIVITIES
    Our significant investing activity during the three months ended March 31, 2025 included cash paid for capital expenditures of $674.8 million. Additional details of our capital spending are included in the "Capital Expenditures" section below.
    C. CASH FLOWS FROM FINANCING ACTIVITIES
    Our significant financing activities during the three months ended March 31, 2025 included:
    •Net proceeds of approximately $1,109.0 million primarily associated with borrowings under the Revolving Credit Facility.
    •Payment of dividends in the amount of $223.5 million on our common stock.
    •Payment of deferred purchase obligations and other deferred payments of $240.2 million.

    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    37

    Table of Contents
    Part I. Financial Information
    CAPITAL EXPENDITURES
    The following table presents our capital spend for the three months ended March 31, 2025 and 2024, organized by the type of the spending as described in our Annual Report (in thousands):
     THREE MONTHS ENDED MARCH 31,
    NATURE OF CAPITAL SPEND20252024
    Growth Investment Capital Expenditures:
    Data Center$575,999 $276,631 
    Real Estate30,934 46,755 
    Innovation and Other21,584 13,730 
    Total Growth Investment Capital Expenditures628,517 337,116 
    Recurring Capital Expenditures:
    Data Center$3,067 $1,768 
    Real Estate8,196 9,361 
    Non-Real Estate16,820 17,608 
    Total Recurring Capital Expenditures28,083 28,737 
    Total Capital Spend (on accrual basis)$656,600 $365,853 
    Net (decrease) increase in prepaid capital expenditures(2,351)(8,768)
    Net decrease (increase) in accrued capital expenditures20,518 24,060 
    Total Capital Spend (on cash basis)$674,767 $381,145 
        
    Excluding capital expenditures associated with potential future acquisitions, we expect total capital expenditures of approximately $1,950.0 million for the year ending December 31, 2025. Of this, we expect capital expenditures for growth investment of approximately $1,800.0 million and recurring capital expenditures of approximately $150.0 million.
    DIVIDENDS
    See Note 7 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for a listing of dividends that we declared during the first three months of 2025 and fiscal year 2024.
    On May 1, 2025, we declared a dividend to our stockholders of record as of June 16, 2025 of $0.785 per share, payable on July 3, 2025.

    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    38

    Table of Contents
    Part I. Financial Information
    FINANCIAL INSTRUMENTS AND DEBT
    Financial instruments that potentially subject us to credit risk consist principally of cash and cash equivalents (including money market funds and time deposits) and accounts receivable. The only significant concentrations of liquid investments as of March 31, 2025 are related to cash and cash equivalents held in money market funds. See Note 2.e. to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for information on our money market funds and time deposits.
    Long-term debt as of March 31, 2025 is as follows (in thousands):
     MARCH 31, 2025
     DEBT (INCLUSIVE OF DISCOUNT)UNAMORTIZED DEFERRED FINANCING COSTSCARRYING AMOUNT
    Revolving Credit Facility(1)
    $1,073,000 $(8,788)$1,064,212 
    Term Loan A(1)
    213,281 — 213,281 
    Term Loan B due 2031(1)
    1,835,940 (14,059)1,821,881 
    Virginia 3 Term Loans(2)
    271,079 (2,519)268,560 
    Virginia 4/5 Term Loans(2)
    138,747 (1,900)136,847 
    Virginia 6 Term Loans(2)
    179,410 (4,112)175,298 
    Virginia 7 Term Loans(2)
    107,337 (7,022)100,315 
    Australian Dollar Term Loan(2)
    176,251 (230)176,021 
    UK Bilateral Revolving Credit Facility(2)
    181,099 (992)180,107 
    GBP Notes(2)
    517,424 (570)516,854 
    47/8% Notes due 2027(2)
    1,000,000 (3,555)996,445 
    51/4% Notes due 2028(2)
    825,000 (3,543)821,457 
    5% Notes due 2028(2)
    500,000 (2,412)497,588 
    7% Notes due 2029(2)
    1,000,000 (8,154)991,846 
    47/8% Notes due 2029(2)
    1,000,000 (6,510)993,490 
    51/4% Notes due 2030(2)
    1,300,000 (8,023)1,291,977 
    41/2% Notes(2)
    1,100,000 (7,363)1,092,637 
    5% Notes due 2032(2)
    750,000 (9,574)740,426 
    55/8% Notes(2)
    600,000 (4,259)595,741 
    61/4% Notes(2)
    1,200,000 (14,089)1,185,911 
    Real Estate Mortgages, Financing Lease Liabilities and Other655,796 (1,694)654,102 
    Accounts Receivable Securitization Program400,000 (600)399,400 
    Total Long-term Debt15,024,364 (109,968)14,914,396 
    Less Current Portion(736,922)— (736,922)
    Long-term Debt, Net of Current Portion$14,287,442 $(109,968)$14,177,474 
    (1)Collectively, the “Credit Agreement”. The Credit Agreement consists of a revolving credit facility (the “Revolving Credit Facility”), a term loan A facility (the “Term Loan A”) and a term loan B facility (the "Term Loan B due 2031").
    (2)Each as defined in Note 7 to Notes to Consolidated Financial Statements included in our Annual Report.
    See Note 7 to Notes to Consolidated Financial Statements included in our Annual Report and Note 5 to Notes to Condensed Consolidated Financial Statements included in this Quarterly Report for additional information regarding our long-term debt.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    39

    Table of Contents
    Part I. Financial Information
    DEBT COVENANTS
    The Credit Agreement, our bond indentures and other agreements governing our indebtedness contain certain restrictive financial and operating covenants, including covenants that restrict our ability to complete acquisitions, pay cash dividends, incur indebtedness, make investments, sell assets and take other specified corporate actions. The covenants do not contain a rating trigger. Therefore, a change in our debt rating would not trigger a default under the Credit Agreement, our bond indentures or other agreements governing our indebtedness. The Credit Agreement requires that we satisfy a net total lease adjusted leverage ratio and a fixed charge coverage ratio on a quarterly basis, and our bond indentures require that, among other things, we satisfy a leverage ratio (not lease adjusted) or a fixed charge coverage ratio (not lease adjusted) as a condition to taking actions such as paying dividends and incurring indebtedness.
    The Credit Agreement uses earnings before interest, taxes, depreciation and amortization and rent expense ("EBITDAR")-based calculations and the bond indentures use EBITDA-based calculations as the primary measures of financial performance for purposes of calculating leverage and fixed charge coverage ratios. The EBITDAR- and EBITDA-based leverage calculations include our consolidated subsidiaries, other than those we have designated as "Unrestricted Subsidiaries" as defined in the Credit Agreement and bond indentures. Generally, the Credit Agreement and the bond indentures use a trailing four fiscal quarter basis for purposes of the relevant calculations and require certain adjustments and exclusions for purposes of those calculations, which make the calculation of financial performance for purposes of those calculations under the Credit Agreement and bond indentures not directly comparable to Adjusted EBITDA as presented herein. These adjustments can be significant. For example, the calculation of financial performance under the Credit Agreement and certain of our bond indentures includes (subject to specified exceptions and caps) adjustments for non-cash charges and for expected benefits associated with (i) completed acquisitions, (ii) certain executed lease agreements associated with our data center business that have yet to commence, and (iii) restructuring and other strategic initiatives. The calculation of financial performance under our other bond indentures includes, for example, adjustments for non-cash charges and for expected benefits associated with (i) completed acquisitions and (ii) events that are extraordinary, unusual or non-recurring.
    Our leverage and fixed charge coverage ratios under the Credit Agreement as of March 31, 2025 are as follows:
     MARCH 31, 2025MAXIMUM/MINIMUM ALLOWABLE
    Net total lease adjusted leverage ratio5.0 Maximum allowable of 7.0
    Fixed charge coverage ratio2.4 Minimum allowable of 1.5
    We are in compliance with our leverage and fixed charge coverage ratios under the Credit Agreement, our bond indentures and other agreements governing our indebtedness as of March 31, 2025. Noncompliance with these leverage and fixed charge coverage ratios would have a material adverse effect on our financial condition and liquidity.
    Our ability to pay interest on or to refinance our indebtedness depends on our future performance, working capital levels and capital structure, which are subject to general economic, financial, competitive, legislative, regulatory and other factors which may be beyond our control. There can be no assurance that we will generate sufficient cash flow from our operations or that future financings will be available on acceptable terms or in amounts sufficient to enable us to service or refinance our indebtedness or to make necessary capital expenditures.
    DERIVATIVE INSTRUMENTS
    INTEREST RATE SWAP AGREEMENTS
    We utilize interest rate swap agreements designated as cash flow hedges to limit our exposure to changes in interest rates on a portion of our floating rate indebtedness. Certain of our interest rate swap agreements have notional amounts that will increase with the underlying hedged transaction. Under our interest rate swap agreements, we receive variable rate interest payments associated with the notional amount of each interest rate swap, based upon SOFR, in exchange for the payment of fixed interest rates as specified in the interest rate swap agreements. Our interest rate swap agreements are marked to market at the end of each reporting period, representing the fair values of the interest rate swap agreements, and any changes in fair value are recognized as a component of Accumulated other comprehensive items, net. Unrealized gains are recognized as assets, while unrealized losses are recognized as liabilities.
    As of March 31, 2025 and December 31, 2024, we have approximately $1,487.0 million and $1,482.0 million, respectively, in notional value outstanding on our interest rate swap agreements. As of March 31, 2025, our interest rate swap agreements have maturity dates ranging from October 2025 through May 2027.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    40

    Table of Contents
    Part I. Financial Information
    CROSS-CURRENCY SWAP AGREEMENTS
    We utilize cross-currency swaps to hedge the variability of exchange rate impacts between the United States dollar and certain of our foreign functional currencies, including the Euro and the Canadian dollar. As of March 31, 2025, our cross-currency swap agreements have maturity dates ranging from February 2026 through November 2026.
    The notional values of our cross-currency swaps, by currency, as of March 31, 2025 and December 31, 2024, are as follows (in thousands):
     MARCH 31, 2025DECEMBER 31, 2024
    Euro$509,187 $509,187 
    Canadian dollar350,000 350,000 

    $859,187 $859,187 
    We have designated these cross-currency swap agreements as hedges of net investments in our Euro and Canadian dollar denominated subsidiaries and they require an exchange of the notional amounts at maturity. These cross-currency swap agreements are marked to market at the end of each reporting period, representing the fair values of the cross-currency swap agreements, and any changes in fair value are recognized as a component of Accumulated other comprehensive items, net. Unrealized gains are recognized as assets while unrealized losses are recognized as liabilities. The excluded component of our cross-currency swap agreements is recorded in Accumulated other comprehensive items, net and amortized to interest expense on a straight-line basis.
    INVESTMENTS
    Our joint venture with AGC Equity Partners (the "Frankfurt JV") is accounted for as an equity method investment and is presented as a component of Other within Other assets, net in our Condensed Consolidated Balance Sheets. The carrying value and equity interest in the Frankfurt JV at March 31, 2025 and December 31, 2024 is as follows (in thousands):
    MARCH 31, 2025DECEMBER 31, 2024
    CARRYING VALUEEQUITY INTERESTCARRYING VALUEEQUITY INTEREST
    Frankfurt JV
    $77,885 20 %$61,075 20 %
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    41

    Table of Contents
    Part I. Financial Information
    ITEM 4. CONTROLS AND PROCEDURES
    DISCLOSURE CONTROLS AND PROCEDURES
    The term "disclosure controls and procedures" is defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). These rules refer to the controls and other procedures of a company that are designed to ensure that information is recorded, processed, accumulated, summarized, communicated and reported to management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding what is required to be disclosed by a company in the reports that it files under the Exchange Act.
    As of March 31, 2025 (the "Evaluation Date"), we carried out an evaluation, under the supervision and with the participation of our management, including our chief executive officer and chief financial officer, of the effectiveness of our disclosure controls and procedures. Based upon that evaluation, our chief executive officer and chief financial officer concluded that, as of the Evaluation Date, our disclosure controls and procedures are effective.
    CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING
    Our management, with the participation of our principal executive officer and principal financial officer, is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act. Our internal control system is designed to provide reasonable assurance to our management and board of directors regarding the preparation and fair presentation of published financial statements.
    There were no changes in our internal control over financial reporting that occurred during the quarter ended March 31, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    42


    pgxx_partii.jpg


    Table of Contents
    Part II. Other Information
    PART II. OTHER INFORMATION
    ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
    We did not sell any unregistered equity securities during the three months ended March 31, 2025, nor did we repurchase any shares of our common stock during the three months ended March 31, 2025.
    ITEM 5. OTHER INFORMATION
    On February 21, 2025, Mr. Greg McIntosh, our Executive Vice President and Chief Commercial Officer, Global Records and Information Management, adopted a 10b5-1 trading plan to (i) exercise options to purchase up to 6,744 shares of our common stock, (ii) sell up to 9,848 shares of our common stock between May 22, 2025 and August 29, 2025 and (iii) sell 100% of the net shares to be acquired upon vesting of 27,934 gross performance units (“PUs”), as adjusted based on the actual performance results of such PUs, between June 2, 2025 and August 29, 2025. Mr. McIntosh’s plan will terminate on the earlier of August 29, 2025 and the date that all trades under the plan are completed.
    On March 14, 2025, William L. Meaney, our President and Chief Executive Officer, adopted a 10b5-1 trading plan to (i) exercise options to purchase up to 803,924 shares of our common stock between January 2, 2026 and December 31, 2027, (ii) sell up to 803,924 shares of our common stock between January 2, 2026 and December 31, 2027 and (iii) sell 100% of the net shares to be acquired upon vesting of 317,031 gross PUs, as adjusted based on the actual performance results of such PUs, between March 2, 2026 and March 4, 2027. Mr. Meaney's plan will terminate on the earlier of December 31, 2027 and the date that all trades under the plan are completed.
    On March 20, 2025, Mr. Mark Kidd, our Executive Vice President and General Manager, Data Centers and ALM, adopted a 10b5-1 trading plan to (i) exercise options to purchase up to 7,306 shares of our common stock between June 18, 2025 and March 9, 2026 and (ii) sell up to 97,306 shares of our common stock between July 1, 2025 and September 1, 2026. Mr. Kidd’s plan will terminate on the earlier of September 18, 2026 and the date that all trades under the plan are completed.
    Each of these arrangements was entered into during an open trading window and is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Securities Exchange Act of 1934.
    ITEM 6. EXHIBITS
    (A) EXHIBITS
    Certain exhibits indicated below are incorporated by reference to documents we have filed with the SEC. Each exhibit marked by a pound sign (#) is a management contract or compensatory plan.
    EXHIBIT NO.DESCRIPTION
    31.1
    Rule 13a-14(a) Certification of Chief Executive Officer. (Filed herewith.)
    31.2
    Rule 13a-14(a) Certification of Chief Financial Officer. (Filed herewith.)
    32.1
    Section 1350 Certification of Chief Executive Officer. (Furnished herewith.)
    32.2
    Section 1350 Certification of Chief Financial Officer. (Furnished herewith.)
    101.INSXBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
    101.SCHInline XBRL Taxonomy Extension Schema Document.
    101.CALInline XBRL Taxonomy Extension Calculation Linkbase Document.
    101.DEFInline XBRL Taxonomy Extension Definition Linkbase Document.
    101.LABInline XBRL Taxonomy Label Linkbase Document.
    101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document.
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    44

    Table of Contents
    Part II. Other Information
    SIGNATURES
    Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
    IRON MOUNTAIN INCORPORATED
    By:
    /s/ DANIEL BORGES
    Daniel Borges
     Senior Vice President, Chief Accounting Officer
    Dated: May 1, 2025
    IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q
    45
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    • Iron Mountain Reports First Quarter 2025 Results

      Achieves record quarterly revenue of $1.6 billion, an increase of 7.8% on a reported basis and an increase of 9.4% excluding the effects of foreign exchange Strong performance across the business, with our growth businesses of data center, digital, and asset lifecycle management (ALM) collectively growing more than 20% Net Income of $16 million Delivers record first quarter Adjusted EBITDA of $580 million Increases 2025 financial guidance Iron Mountain Incorporated (NYSE:IRM), a global leader in information management services, announces financial results for the first quarter of 2025. "We are pleased with our strong start to 2025, delivering another record performance in Re

      5/1/25 6:45:00 AM ET
      $IRM
      Real Estate Investment Trusts
      Real Estate
    • Iron Mountain Schedules First Quarter 2025 Earnings Release and Conference Call

      Iron Mountain Incorporated (NYSE:IRM), a global leader in information management services, will report its first quarter 2025 financial results before market hours on Thursday, May 1, 2025. The Company will also host a conference call to discuss results on the same day. The earnings press release, conference call slides, and supplemental financial information will be available at: https://investors.ironmountain.com, under "Quarterly Earnings" prior to the call on Thursday, May 1, 2025. The webcast link can be accessed under "Investor Events" and you may register directly for the webcast at the following link: Webcast Registration. Investors who would like to join the conference call are e

      4/10/25 7:00:00 AM ET
      $IRM
      Real Estate Investment Trusts
      Real Estate
    • Iron Mountain Reports Fourth Quarter and Full Year 2024 Results

      Achieves record quarterly and full year revenue of $1.6 billion and $6.1 billion, respectively Q4 2024 and Full Year 2024 revenue growth of 11.4% and 12.2%, respectively, driven by strong performances across global RIM, data center, and asset lifecycle management (ALM) businesses Q4 2024 and Full Year 2024 Net Income of $106 million and $184 million, respectively Delivers record quarterly and full year Adjusted EBITDA of $605 million and $2.2 billion, respectively Issues strong 2025 guidance with Revenue growth of 8% to 11% and Adjusted EBITDA growth of 11% to 13% Excluding the effects of foreign exchange, 2025 guidance for Revenue growth is 10% to 12% and Adjusted EBIT

      2/13/25 6:45:00 AM ET
      $IRM
      Real Estate Investment Trusts
      Real Estate