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Item 1. UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

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Item 1. UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q1

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)1,312,0791,291,379
Prepaid expenses and other282,945244,127
Total Current Assets1,750,3621,691,222
Property, Plant and Equipment:
Property, plant and equipment12,758,46711,985,997
Less—Accumulated depreciation(4,509,307)(4,354,398)
Property, Plant and Equipment, Net8,249,1607,631,599
Other Assets, Net:
Goodwill5,141,8105,083,817
Customer and supplier relationships and other intangible assets1,266,9931,274,731
Operating lease right-of-use assets2,386,5112,489,893
Other567,251545,853
Total Other Assets, Net9,362,5659,394,294
Total Assets$19,362,087$18,717,115
LIABILITIES AND EQUITY
Current Liabilities:
Current portion of long-term debt$736,922$715,109
Accounts payable707,581678,716
Accrued expenses and other current liabilities (includes current portion of operating lease liabilities)1,063,2371,366,568
Deferred revenue333,171326,882
Total Current Liabilities2,840,9113,087,275
Long-term Debt, net of current portion14,177,47413,003,977
Long-term Operating Lease Liabilities, net of current portion2,224,0802,334,826
Other Long-term Liabilities339,144312,199
Deferred Income Taxes204,516205,341
Commitments and Contingencies
Redeemable Noncontrolling Interests78,23778,171
(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)2,9502,936
Additional paid-in capital4,609,6634,647,330
(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 Interests196,245198,448
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-Q2

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
Service644,153592,021
Total Revenues1,592,5291,476,863
Operating Expenses:
Cost of sales (excluding depreciation and amortization)710,204653,255
Selling, general and administrative329,737319,465
Depreciation and amortization232,154209,555
Acquisition and Integration Costs5,8237,809
Restructuring and other transformation54,74640,767
Loss (gain) on disposal/write-down of property, plant and equipment, net5,571389
Total Operating Expenses1,338,2351,231,240
Operating Income (Loss)254,294245,623
Interest Expense, Net (includes Interest Income of $3,463 and $3,660 for the three months ended March 31, 2025 and 2024, respectively)194,738164,519
Other Expense (Income), Net28,488(12,530)
Net Income (Loss) Before Provision (Benefit) for Income Taxes31,06893,634
Provision (Benefit) for Income Taxes14,83516,609
Net Income (Loss)16,23377,025
Less: Net Income (Loss) Attributable to Noncontrolling Interests2812,964
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—Basic294,507292,746
Weighted Average Common Shares Outstanding—Diluted297,260295,221

The accompanying notes are an integral part of these condensed consolidated financial statements.

IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q3

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)84,15618,616
Comprehensive Income (Loss) Attributable to Noncontrolling Interests6212,196
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-Q4

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 DISTRIBUTIONSACCUMULATED OTHER COMPREHENSIVE ITEMS, NETNONCONTROLLING INTERESTSREDEEMABLE NONCONTROLLING INTERESTS
TOTALSHARESAMOUNTS
Balance, December 31, 2024$(304,674)293,592,637$2,936$4,647,330$(4,583,436)$(569,952)$198,448$78,171
Issuance and net settlement of shares under employee stock purchase and option plans and stock-based compensation(37,653)1,376,10314(37,667)————
Parent cash dividends declared(241,280)———(241,280)———
Other comprehensive income (loss)67,583————67,583—340
Net income (loss)15,909———15,952—(43)324
Noncontrolling interests dividends(2,160)—————(2,160)(598)
Balance, March 31, 2025$(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 DISTRIBUTIONSACCUMULATED OTHER COMPREHENSIVE ITEMS, NETNONCONTROLLING INTERESTSREDEEMABLE NONCONTROLLING INTERESTS
TOTALSHARESAMOUNTS
Balance, December 31, 2023$211,773292,142,739$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)942,94410(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$18,660293,085,683$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-Q5

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:
Depreciation162,441143,633
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)77,56972,022
Revenue reduction associated with amortization of customer inducements and above- and below-market leases1,3171,321
Stock-based compensation expense26,09414,039
(Benefit) provision for deferred income taxes(6,408)1,125
Loss (gain) on disposal/write-down of property, plant and equipment, net5,571389
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 Activities197,299130,038
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, net1905,605
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 debt3,390,3222,479,378
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 Activities578,832362,099
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 Period155,716222,789
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-Q6

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-Q7

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)371,912359,265
Liabilities:
Current
Operating lease liabilities$329,237$315,400
Financing lease liabilities(1)130,980128,397
Long-term
Operating lease liabilities$2,224,080$2,334,826
Financing lease liabilities(1)292,185278,444

(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 liabilities6,1295,221

(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$117,336
Operating cash flows used in financing leases (interest)6,1295,221
Financing cash flows used in financing leases13,34810,679
NON-CASH ITEMS:
Operating lease modifications and reassessments$(85,512)$(262)
New operating leases (including acquisitions)38,41764,556
IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q8

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——20,71320,713
Fair value and other adjustments——(1,259)(1,259)
Currency effects32,0415,2231,27538,539
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-Q9

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
DESCRIPTIONTOTAL CARRYING VALUE AT MARCH 31, 2025QUOTED 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 Securities8,2726,5071,765—
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
DESCRIPTIONTOTAL CARRYING VALUE AT DECEMBER 31, 2024QUOTED 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 Securities8,1446,3901,754—
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-Q10

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, 2025THREE MONTHS ENDED MARCH 31, 2024
FOREIGN CURRENCY TRANSLATION AND OTHER ADJUSTMENTSDERIVATIVE FINANCIAL INSTRUMENTSTOTALFOREIGN CURRENCY TRANSLATION AND OTHER ADJUSTMENTSDERIVATIVE FINANCIAL INSTRUMENTSTOTAL
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)—11,38811,388
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 AMOUNTACCUMULATED AMORTIZATIONNET CARRYING AMOUNTGROSS CARRYING AMOUNTACCUMULATED AMORTIZATIONNET CARRYING AMOUNT
Intake Costs asset$92,832$(44,830)$48,002$89,057$(43,783)$45,274
Commissions asset212,688(83,943)128,745200,149(78,955)121,194

Deferred revenue liabilities are reflected in our Condensed Consolidated Balance Sheets as follows:

DESCRIPTIONLOCATION IN BALANCE SHEETMARCH 31, 2025DECEMBER 31, 2024**(1)**
Deferred revenue—Current(2)Deferred revenue$333,171$326,882
Deferred revenue—Long-term(3)Other Long-term Liabilities118,129110,601

(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-Q11

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-Q12

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-Q13

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 Interests2812,964
Net Income (Loss) Attributable to Iron Mountain Incorporated (utilized in numerator of Earnings Per Share calculation)$15,952$74,061
Weighted-average shares—basic294,507,000292,746,000
Effect of dilutive potential stock options2,162,0001,886,000
Effect of dilutive potential RSUs and PUs591,000589,000
Weighted-average shares—diluted297,260,000295,221,000
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 calculation98,685365,764

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, 2025DECEMBER 31, 2024
CARRYING VALUEEQUITY INTERESTCARRYING VALUEEQUITY INTEREST
Frankfurt JV$77,88520%$61,07520%

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-Q14

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 dollar350,000350,000
$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, 2025DECEMBER 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-Q15

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)4,1764,176

(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)
IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q16

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 COSTSCARRYING AMOUNTFAIR VALUEDEBT (INCLUSIVE OF DISCOUNT)UNAMORTIZED DEFERRED FINANCING COSTSCARRYING AMOUNTFAIR 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—213,281213,281216,016—216,016216,016
Term Loan B due 2031(1)1,835,940(14,059)1,821,8811,846,0251,840,181(14,690)1,825,4911,850,698
Virginia 3 Term Loans(2)271,079(2,519)268,560271,079271,079(3,013)268,066271,079
Virginia 4/5 Term Loans(2)138,747(1,900)136,847138,74776,535(2,752)73,78376,535
Virginia 6 Term Loans(2)179,410(4,112)175,298179,410137,495(4,605)132,890137,495
Virginia 7 Term Loans(2)107,337(7,022)100,315107,33732,074(7,591)24,48332,074
Australian Dollar Term Loan(2)176,251(230)176,021176,979175,813(265)175,548176,655
UK Bilateral Revolving Credit Facility(2)181,099(992)180,107181,099175,503(1,034)174,469175,503
GBP Notes(2)517,424(570)516,854509,016501,437(789)500,648490,155
47/8% Notes due 2027(2)1,000,000(3,555)996,445976,2501,000,000(3,910)996,090972,500
51/4% Notes due 2028(2)825,000(3,543)821,457804,375825,000(3,838)821,162804,375
5% Notes due 2028(2)500,000(2,412)497,588481,250500,000(2,592)497,408481,250
7% Notes due 2029(2)1,000,000(8,154)991,8461,015,0001,000,000(8,686)991,3141,020,000
47/8% Notes due 2029(2)1,000,000(6,510)993,490950,0001,000,000(6,871)993,129945,000
51/4% Notes due 2030(2)1,300,000(8,023)1,291,9771,239,8751,300,000(8,399)1,291,6011,235,000
41/2% Notes(2)1,100,000(7,363)1,092,6371,003,7501,100,000(7,674)1,092,3261,001,000
5% Notes due 2032(2)750,000(9,574)740,426688,125750,000(9,900)740,100688,125
55/8% Notes(2)600,000(4,259)595,741571,500600,000(4,404)595,596570,000
61/4% Notes(2)1,200,000(14,089)1,185,9111,185,0001,200,000(14,517)1,185,4831,194,000
Real Estate Mortgages, Financing Lease Liabilities and Other655,796(1,694)654,102655,796614,231(1,825)612,406614,231
Accounts Receivable Securitization Program400,000(600)399,400400,000400,000(670)399,330400,000
Total Long-term Debt15,024,364(109,968)14,914,39613,836,364(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.

IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q17

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 SHARERECORD DATETOTAL AMOUNTPAYMENT DATE
February 22, 20240.6500March 15, 2024190,506April 4, 2024
May 2, 20240.6500June 17, 2024190,643July 5, 2024
August 1, 20240.7150September 16, 2024209,776October 3, 2024
November 6, 20240.7150December 16, 2024209,913January 7, 2025
February 13, 20250.7850March 17, 2025231,549April 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.

IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q18

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 BUSINESSTOTAL REPORTABLE SEGMENTSCORPORATE AND OTHERTOTAL 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 Rental757,508172,945930,45317,923948,376
Service498,434252498,686145,467644,153
Other Segment Items(1)699,62882,381782,009
Adjusted EBITDA556,31490,816647,130
Total Assets(2)10,263,1406,641,68816,904,8282,457,25919,362,087
For the Three Months Ended March 31, 2024
Total Revenues$1,210,157$143,937$1,354,094$122,769$1,476,863
Storage Rental728,984140,028869,01215,830884,842
Service481,1733,909485,082106,939592,021
Other Segment Items(1)683,88982,369766,258
Adjusted EBITDA526,26861,568587,836
Total Assets(2)10,706,3065,000,98115,707,2872,122,26917,829,556

(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.

IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q19

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
IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q20

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$936,652
Data Management(1)122,087132,050
Information Destruction(1)(2)142,028141,455
Data Center(1)——
Global Data Center Business
Records Management(1)$—$—
Data Management(1)——
Information Destruction(1)——
Data Center(1)173,197143,937
Corporate and Other
Records Management(1)$42,787$39,072
Data Management(1)——
Information Destruction(1)(3)120,60383,697
Data Center(1)——
Total Consolidated
Records Management(1)$1,034,614$975,724
Data Management(1)122,087132,050
Information Destruction(1)(2)(3)262,631225,152
Data Center(1)173,197143,937

(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.

IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q21

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 transformation32,89030,041289,704
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—43,576
Corporate and Other1,13058117,312
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 Business1,2831,39111,103
Corporate and Other20,54419,680196,931
Total other transformation costs$32,890$30,041$289,704
IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q22

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 accrued21,85632,89054,746
Payments(13,013)(25,537)(38,550)
Balance as of March 31, 2025$15,817$20,357$36,174
IRON MOUNTAIN MARCH 31, 2025 FORM 10-Q23

Part I. Financial Information

Previous: Cover and table of contents · Next: Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS