Item 16. FORM 10-K SUMMARY

None.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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 on the 24th day of February, 2026.

									AMERICAN TOWER CORPORATION
									By:			/S/ STEVEN O. VONDRAN
												Steven O. Vondran President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been duly signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

Signature						Title						Date
/S/ STEVEN O. VONDRAN						President and Chief Executive Officer (Principal Executive Officer), Director						February 24, 2026
Steven O. Vondran
/S/ RODNEY M. SMITH						Executive Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer)						February 24, 2026
Rodney M. Smith
/S/ ROBERT J. MEYER						Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)						February 24, 2026
Robert J. Meyer
/S/ KELLY C. CHAMBLISS						Director						February 24, 2026
Kelly C. Chambliss
/S/ TERESA H. CLARKE						Director						February 24, 2026
Teresa H. Clarke
/S/ KENNETH R. FRANK						Director						February 24, 2026
Kenneth R. Frank
/S/ ROBERT D. HORMATS						Director						February 24, 2026
Robert D. Hormats
/S/ RAJESH KALATHUR						Director						February 24, 2026
Rajesh Kalathur
/S/ GRACE D. LIEBLEIN						Director						February 24, 2026
Grace D. Lieblein
/S/ CRAIG MACNAB						Director						February 24, 2026
Craig Macnab
/S/ NEVILLE R. RAY						Director						February 24, 2026
Neville R. Ray
/S/ PAMELA D. A. REEVE						Chair of the Board, Director						February 24, 2026
Pamela D. A. Reeve
/S/ EUGENE F. REILLY						Director						February 24, 2026
Eugene F. Reilly
/S/ BRUCE L. TANNER						Director						February 24, 2026
Bruce L. Tanner

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

			Page
Report of Independent Registered Public Accounting Firm (PCAOB ID No. 34)						2
Consolidated Balance Sheets as of December 31, 2025 and 2024						3
Consolidated Statements of Operations for the Years Ended December 31, 2025, 2024 and 2023						4
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2025, 2024 and 2023						5
Consolidated Statements of Equity for the Years Ended December 31, 2025, 2024 and 2023						6
Consolidated Statements of Cash Flows for the Years Ended December 31, 2025, 2024 and 2023						7
Notes to Consolidated Financial Statements						8

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of American Tower Corporation

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of American Tower Corporation and subsidiaries (the “Company”) as of December 31, 2025 and 2024, the related consolidated statements of operations, comprehensive income, equity, and cash flows, for each of the three years in the period ended December 31, 2025, and the related notes and the schedule listed in the Index at Item 15 (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 24, 2026, expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

Critical audit matters are matters arising from the current-period audit of the financial statements that were communicated or required to be communicated to the audit committee and that (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. We determined that there are no critical audit matters.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

February 24, 2026

We have served as the Company’s auditor since 1997.

F-2

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in millions, except share count and per share data)

						December 31, 2025						December 31, 2024
ASSETS
CURRENT ASSETS:
Cash and cash equivalents						$	1,474.8					$	1,999.6
Restricted cash						130.4						108.6
Accounts receivable, net						650.3						540.0
Prepaid and other current assets						486.3						530.6
Total current assets						2,741.8						3,178.8
PROPERTY AND EQUIPMENT, net						20,356.3						19,056.8
GOODWILL						12,255.5						11,768.1
OTHER INTANGIBLE ASSETS, net						14,530.7						14,474.3
DEFERRED TAX ASSET						151.4						122.7
DEFERRED RENT ASSET						3,851.3						3,710.2
RIGHT-OF-USE ASSET						8,426.5						8,089.6
NOTES RECEIVABLE AND OTHER NON-CURRENT ASSETS						876.9						676.9
TOTAL						$	63,190.4					$	61,077.4
LIABILITIES
CURRENT LIABILITIES:
Accounts payable						$	259.8					$	240.8
Accrued expenses						1,112.5						1,082.0
Distributions payable						818.6						780.3
Accrued interest						425.2						373.6
Current portion of operating lease liability						584.9						576.7
Current portion of long-term obligations						3,387.8						3,693.0
Unearned revenue						325.0						329.2
Total current liabilities						6,913.8						7,075.6
LONG-TERM OBLIGATIONS						33,832.5						32,808.8
OPERATING LEASE LIABILITY						7,158.7						6,875.6
ASSET RETIREMENT OBLIGATIONS						2,512.9						2,393.8
DEFERRED TAX LIABILITY						1,440.3						1,262.0
OTHER NON-CURRENT LIABILITIES						976.9						1,012.9
Total liabilities						52,835.1						51,428.7
COMMITMENTS AND CONTINGENCIES
EQUITY (shares in thousands):
Common stock: $0.01 par value; 1,000,000 shares authorized; 479,358 and 478,388 shares issued; and 466,318 and 467,384 shares outstanding, respectively						4.8						4.8
Additional paid-in capital						15,215.3						15,057.3
Distributions in excess of earnings						(5,086.0)						(4,424.1)
Accumulated other comprehensive loss						(4,815.8)						(5,954.6)
Treasury stock (13,040 and 11,004 shares at cost, respectively)						(1,665.8)						(1,301.2)
Total American Tower Corporation equity						3,652.5						3,382.2
Noncontrolling interests						6,702.8						6,266.5
Total equity						10,355.3						9,648.7
TOTAL						$	63,190.4					$	61,077.4

See accompanying notes to consolidated financial statements.

F-3

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except share and per share data)

			Year Ended December 31,
			2025						2024						2023
REVENUES:
Property			$	10,305.0					$	9,933.5					$	9,869.2
Services			339.6						193.7						143.0
Total operating revenues			10,644.6						10,127.2						10,012.2
OPERATING EXPENSES:
Costs of operations (exclusive of items shown separately below):
Property			2,574.1						2,481.8						2,501.4
Services			174.0						92.6						60.1
Depreciation, amortization and accretion			2,041.6						2,028.8						2,928.5
Selling, general, administrative and development expense			940.7						933.4						946.0
Other operating expense			68.4						74.1						370.7
Goodwill impairment			—						—						80.0
Total operating expenses			5,798.8						5,610.7						6,886.7
OPERATING INCOME			4,845.8						4,516.5						3,125.5
OTHER INCOME (EXPENSE):
Interest income			134.0						135.2						118.6
Interest expense			(1,359.4)						(1,404.5)						(1,388.2)
Loss on retirement of long-term obligations			—						—						(0.3)
Other (expense) income (including foreign currency (losses) gains of $(809.4), $308.3, and $(330.6) respectively)			(576.2)						377.6						(326.3)
Total other expense			(1,801.6)						(891.7)						(1,596.2)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			3,044.2						3,624.8						1,529.3
Income tax provision			(415.7)						(366.3)						(90.8)
NET INCOME FROM CONTINUING OPERATIONS			2,628.5						3,258.5						1,438.5
LOSS FROM DISCONTINUED OPERATIONS, NET OF TAXES			—						(978.3)						(71.4)
NET INCOME			2,628.5						2,280.2						1,367.1
Net (income) loss attributable to noncontrolling interests			(99.0)						(25.2)						116.2
NET INCOME ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS			$	2,529.5					$	2,255.0					$	1,483.3
NET INCOME FROM CONTINUING OPERATIONS ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS			$	2,529.5					$	3,233.3					$	1,554.7
NET LOSS FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO AMERICAN TOWER CORPORATION COMMON STOCKHOLDERS			$	—					$	(978.3)					$	(71.4)
NET INCOME PER COMMON SHARE AMOUNTS:
Basic net income from continuing operations attributable to American Tower Corporation common stockholders			$	5.41					$	6.92					$	3.34
Basic net loss from discontinued operations attributable to American Tower Corporation common stockholders			—						(2.09)						(0.15)
Basic net income attributable to American Tower Corporation common stockholders			$	5.41					$	4.83					$	3.18
Diluted net income from continuing operations attributable to American Tower Corporation common stockholders			$	5.40					$	6.91					$	3.33
Diluted net loss from discontinued operations attributable to American Tower Corporation common stockholders			—						(2.09)						(0.15)
Diluted net income attributable to American Tower Corporation common stockholders			$	5.40					$	4.82					$	3.18
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (in thousands):
BASIC			467,922						467,011						466,063
DILUTED			468,757						468,120						467,162

See accompanying notes to consolidated financial statements.

F-4

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in millions)

						Year Ended December 31,
						2025						2024						2023
Net income						$	2,628.5					$	2,280.2					$	1,367.1
Other comprehensive (loss) income:
Reclassification of cumulative translation adjustments associated with the sale of ATC TIPL						—						1,072.3						—
Foreign currency translation adjustments, net of tax (benefit) expense of $0.5, $(0.8), and $0.3, respectively.						1,598.8						(1,521.5)						60.2
Other comprehensive income (loss)						1,598.8						(449.2)						60.2
Comprehensive income						4,227.3						1,831.0						1,427.3
Comprehensive (income) loss attributable to noncontrolling interests						(559.0)						208.9						34.8
Comprehensive income attributable to American Tower Corporation stockholders						$	3,668.3					$	2,039.9					$	1,462.1

See accompanying notes to consolidated financial statements.

F-5

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EQUITY

(in millions, share counts in thousands)

															Common Stock												Treasury Stock												Additional Paid-in Capital						Accumulated Other Comprehensive Loss						Distributions in Excess of Earnings						Noncontrolling Interests						Total Equity
																											Issued Shares						Amount						Shares						Amount
BALANCE, JANUARY 1, 2023																											476,623						$	4.8					(11,004)						$	(1,301.2)					$	14,689.0					$	(5,718.3)					$	(2,101.9)					$	6,836.1					$	12,408.5
Stock-based compensation related activity																											586						0.0						—						—						169.6						—						—						—						169.6
Issuance of common stock—stock purchase plan																											91						0.0						—						—						14.3						—						—						—						14.3
Foreign currency translation adjustment, net of tax																											—						—						—						—						—						(21.2)						—						81.4						60.2
Contributions from noncontrolling interest holders																											—						—						—						—						—						—						—						12.7						12.7
Distributions to noncontrolling interest holders																											—						—						—						—						—						—						—						(146.8)						(146.8)
Common stock distributions declared																											—						—						—						—						—						—						(3,020.2)						—						(3,020.2)
Net income (loss)																											—						—						—						—						—						—						1,483.3						(116.2)						1,367.1
BALANCE, DECEMBER 31, 2023																											477,300						$	4.8					(11,004)						$	(1,301.2)					$	14,872.9					$	(5,739.5)					$	(3,638.8)					$	6,667.2					$	10,865.4
Stock-based compensation related activity																											998						0.0						—						—						169.3						—						—						—						169.3
Issuance of common stock—stock purchase plan																											90						0.0						—						—						15.1						—						—						—						15.1
Foreign currency translation adjustment, net of tax																											—						—						—						—						—						(1,287.4)						—						(234.1)						(1,521.5)
Reclassification of cumulative translation adjustments associated with sale of ATC TIPL																											—						—						—						—						—						1,072.3						—						—						1,072.3
Contributions from noncontrolling interest holders																											—						—						—						—						—						—						—						154.6						154.6
Distributions to noncontrolling interest holders																											—						—						—						—						—						—						—						(346.4)						(346.4)
Common stock distributions declared																											—						—						—						—						—						—						(3,040.3)						—						(3,040.3)
Net income																											—						—						—						—						—						—						2,255.0						25.2						2,280.2
BALANCE, DECEMBER 31, 2024																											478,388						$	4.8					(11,004)						$	(1,301.2)					$	15,057.3					$	(5,954.6)					$	(4,424.1)					$	6,266.5					$	9,648.7
Stock-based compensation related activity																											880						0.0						—						—						143.2						—						—						—						143.2
Issuance of common stock—stock purchase plan																											90						0.0						—						—						14.8						—						—						—						14.8
Treasury stock activity																											—						—						(2,036)						(364.6)						—						—						—						—						(364.6)
Foreign currency translation adjustment, net of tax																											—						—						—						—						—						1,138.8						—						460.0						1,598.8
Contributions from noncontrolling interest holders																											—						—						—						—						—						—						—						148.1						148.1
Distributions to noncontrolling interest holders																											—						—						—						—						—						—						—						(270.8)						(270.8)
Common stock distributions declared																											—						—						—						—						—						—						(3,191.4)						—						(3,191.4)
Net income																											—						—						—						—						—						—						2,529.5						99.0						2,628.5
BALANCE, DECEMBER 31, 2025																											479,358						$	4.8					(13,040)						$	(1,665.8)					$	15,215.3					$	(4,815.8)					$	(5,086.0)					$	6,702.8					$	10,355.3

See accompanying notes to consolidated financial statements.

F-6

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOW

(in millions)

			Year Ended December 31,
						2025						2024						2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income						$	2,628.5					$	2,280.2					$	1,367.1
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and accretion						2,041.6						2,124.8						3,086.5
Stock-based compensation expense						174.2						203.6						195.7
Loss (gain) on investments, unrealized foreign currency loss (gain) and other non-cash expense						606.7						(380.1)						279.0
Impairments, net loss on sale of long-lived assets, non-cash restructuring and merger related expenses						83.0						96.6						739.9
Loss on early retirement of long-term obligations						—						—						0.3
Loss on sale of ATC TIPL						—						1,245.5						—
Amortization of deferred financing costs, debt discounts and premiums and other non-cash interest						54.1						54.1						49.8
Deferred income taxes						42.5						52.3						(182.0)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable						(62.2)						(103.4)						(34.5)
Prepaid and other assets						(0.7)						32.8						(342.6)
Deferred rent asset						(101.0)						(276.3)						(472.0)
Right-of-use asset and Operating lease liability, net						(1.6)						(20.6)						(103.7)
Accounts payable and accrued expenses						(65.6)						48.0						(11.9)
Accrued interest						45.0						(9.6)						128.6
Unearned revenue						(30.7)						(79.3)						(43.4)
Other non-current liabilities						50.2						21.9						65.6
Cash provided by operating activities						5,464.0						5,290.5						4,722.4
CASH FLOWS FROM INVESTING ACTIVITIES
Payments for purchase of property and equipment and construction activities						(1,680.4)						(1,590.0)						(1,798.1)
Payments for acquisitions, net of cash acquired						(454.2)						(123.0)						(168.0)
Proceeds from sales of short-term investments and other non-current assets						294.6						253.2						17.3
Proceeds from the sale of ATC TIPL						—						2,158.8						—
Deposits and other						(19.8)						(288.4)						253.3
Cash (used for) provided by investing activities						(1,859.8)						410.6						(1,695.5)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from short-term borrowings, net						—						8.8						148.7
Borrowings under credit facilities						6,077.3						6,932.9						6,120.0
Proceeds from issuance of senior notes, net						3,000.6						3,568.6						5,678.3
Proceeds from issuance of securities in securitization transaction						—						—						1,300.0
Repayments of notes payable, credit facilities, senior notes, secured debt, term loans and finance leases						(9,450.1)						(12,429.6)						(13,230.3)
Contributions from noncontrolling interest holders						148.1						104.7						4.1
Distributions to noncontrolling interest holders						(270.8)						(390.8)						(46.5)
Purchases of common stock						(364.6)						—						—
Proceeds from stock options and employee stock purchase plan						41.7						46.4						22.1
Distributions paid on common stock						(3,157.2)						(3,074.9)						(2,949.3)
Deferred financing costs and other financing activities						(233.5)						(218.5)						(144.5)
Cash used for financing activities						(4,208.5)						(5,452.4)						(3,097.4)
Net effect of changes in foreign currency exchange rates on cash and cash equivalents, and restricted cash						101.3						(233.9)						23.2
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH						(503.0)						14.8						(47.3)
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF YEAR						2,108.2						2,093.4						2,140.7
CASH AND CASH EQUIVALENTS, AND RESTRICTED CASH, END OF YEAR						$	1,605.2					$	2,108.2					$	2,093.4

See accompanying notes to consolidated financial statements.

F-7

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

1. BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Business—American Tower Corporation (together with its subsidiaries, “ATC” or the “Company”) is one of the largest global real estate investment trusts and a leading independent owner, operator and developer of multitenant communications real estate. The Company’s primary business is the leasing of space on communications sites to wireless service providers, radio and television broadcast companies, wireless data providers, government agencies and municipalities and tenants in a number of other industries. The Company refers to this business, inclusive of its data center business discussed below, as its property operations. Additionally, the Company offers tower-related services in the United States, which the Company refers to as its services operations. These services include site application, zoning and permitting (“AZP”), structural and mount analyses, and construction management services, together with program management offerings that support customer deployment needs from project scoping through construction. The Company’s services operations primarily support the Company’s site leasing business, including through the addition of new tenants and equipment on its sites. The Company’s customers include its tenants, licensees and other payers.

The Company’s portfolio primarily consists of towers that it owns and towers that it operates pursuant to long-term lease arrangements, as well as distributed antenna system (“DAS”) networks, which provide seamless coverage solutions in certain in-building and outdoor wireless environments. In addition to the communications sites in its portfolio, the Company manages rooftop and tower sites for property owners under various contractual arrangements. The Company also holds other telecommunications infrastructure, fiber and property interests that it leases primarily to communications service providers and third-party tower operators and holds a portfolio of highly interconnected data center facilities and related assets in the United States that the Company provides for the leasing of space primarily to enterprises, network operators, cloud providers and supporting service providers.

American Tower Corporation is a holding company that conducts its operations through its directly and indirectly owned subsidiaries and joint ventures. ATC’s principal domestic operating subsidiaries are American Towers LLC and SpectraSite Communications, LLC. ATC conducts its international operations primarily through its subsidiary, American Tower International, Inc., which in turn conducts operations through its various international holding and operating subsidiaries and joint ventures.

The Company operates as a real estate investment trust for U.S. federal income tax purposes (“REIT”). Accordingly, the Company generally is not required to pay U.S. federal income taxes on income generated by its REIT operations, including the income derived from leasing space on its towers and in its data centers, as it receives a dividends paid deduction for distributions to stockholders that offsets its REIT taxable income and gains. However, the Company remains obligated to pay U.S. federal income taxes on earnings from its domestic taxable REIT subsidiaries (“TRSs”). In addition, the Company’s international assets and operations, regardless of their classification for U.S. tax purposes, continue to be subject to taxation in the jurisdictions where those assets are held or those operations are conducted.

The use of TRSs enables the Company to continue to engage in certain businesses and jurisdictions while complying with REIT qualification requirements. The Company may, from time to time, change the election of previously designated TRSs to be included as part of the REIT. As of December 31, 2025, the Company’s REIT-qualified businesses included its U.S. tower leasing business, a majority of its U.S. DAS networks business, its Services and Data Centers segments, as well as most of its operations in Canada, Costa Rica, France, Germany, Ghana, Kenya, Mexico, Nigeria, South Africa, Spain and Uganda.

Principles of Consolidation and Basis of Presentation—The accompanying consolidated financial statements include the accounts of the Company and those entities in which it has a controlling interest. Investments in entities that the Company does not control are accounted for using the equity method or as investments in equity securities, depending upon the Company’s ability to exercise significant influence over operating and financial policies. All intercompany accounts and transactions have been eliminated.

As of December 31, 2025, the Company holds (i) a 52% controlling interest in subsidiaries whose holdings consist of the Company’s operations in France, Germany and Spain (such subsidiaries collectively, “ATC Europe”) (Allianz and La Caisse (each as defined in note 14) hold the noncontrolling interests), (ii) a 51% controlling interest in a joint venture whose holdings consist of the Company’s operations in Bangladesh (Confidence Tower Holdings Ltd. (“Confidence Group”) holds the noncontrolling interest) and (iii) a controlling common equity interest of approximately 71% in the Company’s U.S. data center business (Stonepeak (as defined and further discussed in note 14) holds approximately 29% of the outstanding common equity and 100% of the outstanding mandatorily convertible preferred equity). As of December 31, 2025, ATC Europe holds an 87% and an 83% controlling interest in subsidiaries that consist of the Company’s operations in Germany and Spain, respectively

F-8

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

(PGGM holds the noncontrolling interests). See note 14 for a discussion of changes to the Company’s noncontrolling interests during the years ended December 31, 2025 and 2024.

Sale of South Africa Fiber—On March 6, 2025, the Company, through its subsidiary ATC South Africa Wireless Infrastructure Proprietary Limited, completed the sale of its fiber assets in South Africa (“South Africa Fiber”) for total consideration of 2.5 billion South African Rand (“ZAR”) (approximately $137.7 million at the date of closing), resulting in a gain on the sale of approximately $53.6 million, which is included in Other operating income in the accompanying consolidated statements of operations. As a result of the transaction, the Company disposed of $6.1 million of goodwill based on the relative fair value of South Africa Fiber and the portion of the applicable goodwill reporting unit that was expected to be retained. Prior to the divestiture, South Africa Fiber’s operating results were included within the Africa & APAC property segment.

Proceeds received at closing			$	137.7
Net assets at closing			(84.1)
Total gain on sale included in Other operating expenses (1)			$	53.6

---

(1)Excludes 348.7 million ZAR (approximately $19.2 million at the date of closing) of taxes.

*Reportable Segments—*The Company reports its results in six segments: U.S. & Canada property (which includes all assets in the United States and Canada, other than the Company’s data center facilities and related assets), Africa & Asia-Pacific (“APAC”) property, Europe property, Latin America property, Data Centers and Services, which are discussed further in note 19.

Significant Accounting Policies and Use of Estimates—The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results may differ from those estimates, and such differences could be material to the accompanying consolidated financial statements. The significant estimates in the accompanying consolidated financial statements include impairment of long-lived assets (including goodwill), revenue recognition, rent expense and lease accounting and income taxes. The Company considers events or transactions that occur after the balance sheet date but before the financial statements are issued as additional evidence for certain estimates or to identify matters that require additional disclosure.

Accounts Receivable and Deferred Rent Asset—The Company derives the largest portion of its revenues, corresponding trade receivables and the related deferred rent asset from a relatively small number of customers in the telecommunications industry, and 59% of its current-year revenues were derived from four customers.

The Company’s deferred rent asset is associated with non-cancellable tenant leases that contain fixed escalation clauses over the terms of the applicable lease for which revenue is recognized on a straight-line basis over the lease term.

The Company mitigates its concentrations of credit risk with respect to trade receivables and the related deferred rent assets by actively monitoring the creditworthiness of its customers. In recognizing customer revenue, the Company assesses the collectibility of both the amounts billed and the portion recognized in advance of billing on a straight-line basis. This assessment takes customer credit risk and business and industry conditions into consideration to ultimately determine the collectibility of the amounts billed. To the extent the amounts, based on management’s estimates, may not be collectible, revenue recognition is deferred until such point as the uncertainty is resolved. Any amounts that were previously recognized as revenue and are subsequently determined to present a risk of collection are reserved as bad debt expense included in Selling, general, administrative and development expense in the accompanying consolidated statements of operations.

Accounts receivable is reported net of allowances for doubtful accounts related to estimated losses resulting from a customer’s inability to make required payments and allowances for amounts invoiced whose collectibility is not reasonably assured. These allowances are generally estimated based on payment patterns, days past due and collection history, and incorporate changes in economic conditions that may not be reflected in historical trends, such as customers in bankruptcy, liquidation or reorganization. Receivables are written-off against the allowances or reserves when they are determined to be uncollectible. Such determination includes analysis and consideration of the particular conditions of the account. Changes in the allowances were as follows:

F-9

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

			Year Ended December 31,
			2025						2024						2023
Balance as of January 1,			$	404.1					$	325.2					$	217.8
Current year increases			160.4						130.5						66.5
Write-offs, recoveries and other (1)			(134.1)						(51.6)						40.9
Balance as of December 31,			$	430.4					$	404.1					$	325.2

---

(1)For the year ended December 31, 2025, primarily relates to balances in the Company’s Latin America property segment.

Functional Currency—The functional currency of each of the Company’s foreign operating subsidiaries is normally the respective local currency, except for Argentina, Costa Rica, Ghana and Nigeria, where the functional currency is the U.S. Dollar. All foreign currency assets and liabilities held by the subsidiaries are translated into U.S. Dollars at the exchange rate in effect at the end of the applicable fiscal reporting period and all foreign currency revenues and expenses are translated at the average monthly exchange rates. Translation adjustments are reflected in equity as a component of Accumulated other comprehensive loss (“AOCL”) in the consolidated balance sheets and included as a component of Comprehensive income in the consolidated statements of comprehensive income.

Gains and losses on foreign currency transactions are reflected in Other expense in the consolidated statements of operations. However, the effect from fluctuations in foreign currency exchange rates on intercompany debt for which repayment is not anticipated in the foreseeable future is reflected in AOCL as well as Euro (“EUR”) dominated debt designated as a net investment hedge, in the consolidated balance sheets and included as a component of Comprehensive income.

The Company recorded the following net foreign currency (gains) losses:

			Year Ended December 31,
			2025						2024						2023
Foreign currency (gains) losses recorded in AOCL			$	(523.4)					$	660.8					$	(103.9)
Foreign currency losses (gains) recorded in Other expense			809.4						(308.3)						330.6
Total foreign currency losses			$	286.0					$	352.5					$	226.7

Cash and Cash Equivalents—Cash and cash equivalents include cash on hand, demand deposits and short-term investments with original maturities of three months or less. The Company maintains its deposits at high-quality financial institutions and monitors the credit ratings of those institutions.

*Restricted Cash—*Restricted cash includes cash pledged as collateral to secure obligations and all cash whose use is otherwise limited by contractual provisions.

The reconciliation of cash and cash equivalents and restricted cash reported within the applicable balance sheet that sum to the total of the same such amounts shown in the statements of cash flows is as follows:

			Year Ended December 31,
			2025						2024						2023
Cash and cash equivalents			$	1,474.8					$	1,999.6					$	1,753.7
Restricted cash			130.4						108.6						119.7
Cash and cash equivalents included in assets of discontinued operations			—						—						219.6
Restricted cash included in assets of discontinued operations			—						—						0.4
Total cash, cash equivalents and restricted cash			$	1,605.2					$	2,108.2					$	2,093.4

Property and Equipment—Property and equipment is recorded at cost or, in the case of acquired properties, at estimated fair value on the date acquired. Cost for self-constructed sites includes direct materials and labor and certain indirect costs associated with construction of the site, such as transportation costs, employee benefits and payroll taxes. The Company begins the capitalization of costs during the pre-construction period, which is the period during which costs are incurred to evaluate the site, and continues to capitalize costs until the site is substantially completed and ready for occupancy by a customer. Labor and related costs capitalized for the years ended December 31, 2025, 2024 and 2023 were $70.4 million, $67.4 million and $62.1 million, respectively.

F-10

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Expenditures for repairs and maintenance are expensed as incurred. Augmentation and improvements that extend an asset’s useful life or enhance capacity are capitalized.

Depreciation expense is recorded using the straight-line method over the assets’ estimated useful lives. The Company estimates that the useful life of its tower assets is thirty years, before taking into account residual value. Additionally, certain of the Company’s intangible assets are amortized on a similar basis to its tower assets, as the estimated useful lives of such intangible assets correlate to the useful life of the towers.

Towers or assets acquired through finance leases are recorded net at the present value of future minimum lease payments or the fair value of the leased asset at the inception of the lease. Property and equipment and assets held under finance leases are amortized over the shorter of the applicable lease term or the estimated useful life of the respective assets for periods generally not exceeding thirty years.

The Company reviews its asset portfolio for indicators of impairment on an individual site basis. Impairments primarily result from a site not having current tenant leases or from having expenses in excess of revenues. The Company reviews other long-lived assets for impairment at least annually or whenever events, changes in circumstances or other evidence indicate that the carrying amount of the Company’s assets may not be recoverable. The Company records impairment charges, which are discussed in note 15, in Other operating expenses in the consolidated statements of operations in the period in which the Company identifies such impairment.

Goodwill and Other Intangible Assets—The Company reviews goodwill for impairment at least annually (as of December 31) or whenever events or circumstances indicate the carrying value of an asset may not be recoverable.

Goodwill is recorded in the applicable segment and assessed for impairment at the reporting unit level. The Company employs a discounted cash flow analysis when testing goodwill for impairment. The key assumptions utilized in the discounted cash flow analysis include current operating performance, terminal revenue growth rate, management’s expectations of future operating results and cash requirements, the current weighted average cost of capital and an expected tax rate. The Company compares the fair value of the reporting unit, as calculated under an income approach using future discounted cash flows, to the carrying amount of the applicable reporting unit. If the carrying amount exceeds the fair value, an impairment loss would be recognized for the amount of the excess. The loss recognized is limited to the total amount of goodwill allocated to that reporting unit.

During the year ended December 31, 2023, the Company concluded that a triggering event occurred with respect to its India reporting unit. As a result, the Company performed a goodwill impairment test based on information observed during its review of strategic alternatives for this reporting unit. The result of the Company’s goodwill impairment test indicated that the carrying amount of the Company's India reporting unit exceeded its estimated fair value. As a result, the Company recorded a goodwill impairment charge of $322.0 million during the quarter ended September 30, 2023, which is recorded in Loss from discontinued operations in the accompanying consolidated statements of operations for the year ended December 31, 2023.

The results of the annual goodwill impairment test as of December 31, 2023 indicated that the carrying amount of the Company’s Spain reporting unit exceeded its estimated fair value. As a result, the Company recorded a goodwill impairment charge of $80.0 million. The goodwill impairment charge for the Spain reporting unit is recorded in Goodwill impairment in the accompanying consolidated statements of operations for the year ended December 31, 2023.

For the year ended December 31, 2025, the Company estimated the fair value of the Bangladesh reporting unit using, among other things, indications of value received from third parties in connection with the Company’s review of various strategic alternatives for its Bangladesh operations. As a result, the Company recorded a goodwill impairment charge of $6.5 million. The goodwill impairment charge for the Bangladesh reporting unit is recorded in Other operating expense in the accompanying consolidated statements of operations for the year ended December 31, 2025.

During the years ended December 31, 2025, 2024 and 2023, no other goodwill impairment was identified, as the fair value of each of the reporting units was in excess of its carrying amount.

Intangible assets that are separable from goodwill and are deemed to have a definite life are amortized over their useful lives, generally ranging from two to thirty years and are evaluated separately for impairment at least annually or whenever events or circumstances indicate that the carrying amount of an asset may not be recoverable.

The Company reviews its network location intangible assets for indicators of impairment on an individual tower basis. Impairments primarily result from a site not having current tenant leases or from having expenses in excess of revenues. The Company monitors its tenant-related intangible assets on a tenant by tenant basis for indicators of impairment, such as high

F-11

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

levels of turnover or attrition, the customer’s ability to meet its contractual obligations, non-renewal of a significant number of contracts or the cancellation or termination of a relationship. The Company assesses recoverability by determining whether the carrying amount of the related assets will be recovered primarily through projected undiscounted future cash flows. If the Company determines that the carrying amount of an asset may not be recoverable, the Company measures any impairment loss based on the projected future discounted cash flows to be provided from the asset or available market information relative to the asset’s fair value, as compared to the asset’s carrying amount. The Company records impairment charges, which are discussed in note 15, in Other operating expenses in the consolidated statements of operations in the period in which the Company identifies such impairment.

Fair Value Measurements—The Company determines the fair value of its financial instruments based on the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

Asset Retirement Obligations—When required, the Company recognizes the fair value of obligations to remove its assets and remediate the leased space upon which certain of its assets are located. Generally, the associated retirement costs are capitalized as part of the carrying amount of the related assets and depreciated over their estimated useful lives and the liability is accreted through the obligation’s estimated settlement date. Fair value estimates of asset retirement obligations generally involve discounting of estimated future cash flows associated with remediation costs. Periodic accretion of such liabilities due to the passage of time is included in Depreciation, amortization and accretion expense in the consolidated statements of operations. Adjustments are also made to the asset retirement obligation liability to reflect changes in the estimates of timing and amount of expected cash flows, with an offsetting adjustment made to the related long-lived tangible asset. The significant assumptions used in estimating the Company’s aggregate asset retirement obligation are: timing of asset removals; cost of asset removals; timing and number of site lease renewals; expected inflation rates; and credit-adjusted, risk-free interest rates that approximate the Company’s incremental borrowing rate.

Income Taxes—As a REIT, the Company generally is not subject to U.S. federal income taxes on income generated by its REIT operations as it receives a dividends paid deduction for distributions to stockholders that generally offsets its REIT income and gains. However, the Company remains obligated to pay U.S. federal income taxes on certain earnings and continues to be subject to taxation in its foreign jurisdictions. Accordingly, the consolidated financial statements reflect provisions for federal, state, local and foreign income taxes. The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, as well as operating loss and tax credit carryforwards. The Company measures deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which those temporary differences and carryforwards are expected to be recovered or settled. The effect on deferred tax assets and liabilities as a result of a change in tax rates is recognized in income in the period that includes the enactment date.

The Company periodically reviews its deferred tax assets, and provides valuation allowances if, based on the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. Management assesses the available positive and negative evidence to estimate if sufficient future taxable income will be generated to use the existing deferred tax assets. Valuation allowances would be reversed as a reduction to the provision for income taxes if related deferred tax assets are deemed realizable based on changes in facts and circumstances relevant to the assets’ recoverability.

The Company estimates the liabilities from uncertain tax positions, which are recorded in Other non-current liabilities in the consolidated balance sheet, unless expected to be paid within one year. The Company reports penalties and tax-related interest expense and interest income from tax refunds as a component of the income tax provision in the consolidated statements of operations.

Other Comprehensive Income (Loss)—Other comprehensive income (loss) refers to items excluded from net income that are recorded as an adjustment to equity, net of tax. The Company’s other comprehensive income (loss) primarily consisted of changes in fair value of effective derivative cash flow hedges, foreign currency translation adjustments, reclassification of unrealized losses on effective derivative cash flow hedges and other items. The AOCL balance included accumulated foreign currency translation losses of $4.8 billion, $6.0 billion and $5.7 billion as of December 31, 2025, 2024 and 2023, respectively.

Distributions—As a REIT, the Company must annually distribute to its stockholders an amount equal to at least 90% of its REIT taxable income (determined before the deduction for distributed earnings and excluding any net capital gain). Generally, the Company has distributed, and expects to continue to distribute, all or substantially all of its REIT taxable income after taking into consideration its utilization of net operating losses (“NOLs”).

F-12

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

The amount, timing and frequency of future distributions will be at the sole discretion of the Board of Directors and will depend upon various factors, a number of which may be beyond the Company’s control, including the Company’s financial condition and operating cash flows, the amount required to maintain its qualification for taxation as a REIT and reduce any income and excise taxes that the Company otherwise would be required to pay, limitations on distributions in the Company’s existing and future debt and preferred equity instruments, the Company’s ability to utilize NOLs to offset the Company’s distribution requirements, limitations on its ability to fund distributions using cash generated through its TRSs and other factors that the Board of Directors may deem relevant.

Acquisitions—For acquisitions that meet the definition of a business combination, the Company applies the acquisition method of accounting where assets acquired and liabilities assumed are recorded at fair value at the date of each acquisition, and the results of operations are included with those of the Company from the dates of the respective acquisitions. Any excess of the purchase price paid by the Company over the amounts recognized for assets acquired and liabilities assumed is recorded as goodwill. The Company continues to evaluate acquisitions for a period not to exceed one year after the applicable acquisition date of each transaction to determine whether any additional adjustments are needed to the allocation of the purchase price paid for the assets acquired and liabilities assumed. All other acquisitions are accounted for as asset acquisitions and the purchase price is allocated to the net assets acquired with no recognition of goodwill. The purchase price is not subsequently adjusted.

The fair value of the assets acquired and liabilities assumed is typically determined by using either estimates of replacement costs or discounted cash flow valuation methods. When determining the fair value of tangible assets acquired, the Company must estimate the cost to replace the asset with a new asset taking into consideration such factors as age, condition and the economic useful life and productive capacity of the asset. When determining the fair value of intangible assets acquired and liabilities assumed, the Company must estimate the timing and amount of future cash flows, including rate and terms of renewal and attrition, and apply the applicable discount rate.

Net Investment Hedge—The Company is exposed to the impact of foreign currency exchange rate fluctuations on the value of investments in its foreign subsidiaries whose functional currencies are other than the USD. The Company has designated a portion of its EUR denominated senior unsecured notes as a non-derivative net investment hedge on the Company’s net investments in its European subsidiaries, whose functional currency is the EUR, to mitigate against the effect of exchange rate fluctuations on the translation of foreign currency balances to the USD.

For the portion of the EUR denominated senior unsecured notes that are designated as a net investment hedge and meet effectiveness requirements, the changes in carrying value of the notes attributable to the change in foreign currency spot rates are recorded as foreign currency translation adjustments in Accumulated other comprehensive loss, where they offset foreign currency translation gains and losses recorded on the Company’s net investments in its European subsidiaries. To the extent foreign currency-denominated notes designated as net investment hedges are ineffective, changes in carrying value attributable to the change in spot rates would be recorded in earnings. Changes in carrying value attributable to the change in spot rates for the portion of EUR denominated senior unsecured notes not designated as part of the net investment hedge are recorded in earnings.

Revenue—The Company’s revenue is derived from leasing the right to use its communications sites, the land on which the sites are located, the land underlying its customers’ sites and the space in its data center facilities (the “lease component”) and from the reimbursement of costs incurred by the Company in operating the communications sites and data center facilities and supporting its customers’ equipment as well as other services and contractual rights (the “non-lease component”). Most of the Company’s revenue is derived from leasing arrangements and is accounted for as lease revenue unless the timing and pattern of revenue recognition of the non-lease component differs from the lease component. If the timing and pattern of the non-lease component revenue recognition differs from that of the lease component, the Company separately determines the stand-alone selling prices and pattern of revenue recognition for each performance obligation. Revenue related to DAS networks and fiber and other related assets results from agreements with customers that are generally not accounted for as leases.

The Company’s revenue from leasing arrangements, including fixed escalation clauses present in non-cancellable lease arrangements, is reported on a straight-line basis over the term of the respective leases when collectibility is probable. Escalation clauses tied to a consumer price index (“CPI”), or other inflation-based indices, and other variable incentives present in lease agreements with the Company’s tenants, are excluded from the straight-line calculation. Total property straight-line revenues for the years ended December 31, 2025, 2024 and 2023 were $101.0 million, $277.6 million and $465.4 million, respectively.

*Non-lease property revenue—*Non-lease property revenue consists primarily of revenue generated from DAS networks, fiber and other property related revenue. DAS networks and fiber arrangements generally require that the Company provide the tenant the right to use available capacity on the applicable communications infrastructure. Performance obligations are satisfied

F-13

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

over time for the duration of the arrangements. Non-lease property revenue also includes revenue generated from interconnection offerings in the Company’s data center facilities. Interconnection offerings are generally contracted on a month-to-month basis and are cancellable by the Company or the data center customer at any time. Performance obligations are satisfied over time for the duration of the arrangements. Other property related revenue streams, which include site inspections, are not material on either an individual or consolidated basis.

*Services revenue—*The Company offers tower-related services in the United States. These services include AZP, structural and mount analyses, and construction management services, together with program management offerings that support customer deployment needs from project scoping through construction. There is a single performance obligation related to AZP and construction management, and revenue is recognized over time based on milestones achieved, which are determined based on costs expected to be incurred. Structural and mount analyses services may have more than one performance obligation, contingent upon the number of contracted services. Revenue is recognized at the point in time the services are completed.

Some of the Company’s contracts with customers contain multiple performance obligations. For these arrangements, the Company allocates revenue to each performance obligation based on its relative standalone selling price, which is typically based on the price charged to customers in a stand-alone transaction.

Since most of the Company’s contracts are leases, costs to enter into lease arrangements are capitalized under the applicable lease accounting guidance. Costs incurred to obtain non-lease contracts that are capitalized primarily relate to DAS networks and are not material to the consolidated financial statements. The Company has excluded sales tax, value added tax and similar taxes from non-lease revenue.

Revenue is disaggregated by geography in a manner consistent with the Company’s business segments, which are discussed further in note 19. A summary of revenue disaggregated by source and geography is as follows:

Year Ended December 31, 2025						U.S. & Canada						Africa & APAC						Europe						Latin America						Data Centers						Total
Non-lease property revenue						$	292.8					$	24.0					$	10.4					$	117.6					$	151.5					$	596.3
Services revenue						339.6						—						—						—						—						339.6
Total non-lease revenue						$	632.4					$	24.0					$	10.4					$	117.6					$	151.5					$	935.9
Property lease revenue						4,955.9						1,398.9						927.3						1,525.0						901.6						9,708.7
Total revenue						$	5,588.3					$	1,422.9					$	937.7					$	1,642.6					$	1,053.1					$	10,644.6

Year Ended December 31, 2024						U.S. & Canada						Africa & APAC (1)						Europe						Latin America						Data Centers						Total
Non-lease property revenue						$	297.4					$	29.5					$	12.1					$	109.2					$	132.7					$	580.9
Services revenue						193.7						—						—						—						—						193.7
Total non-lease revenue						$	491.1					$	29.5					$	12.1					$	109.2					$	132.7					$	774.6
Property lease revenue						4,950.7						1,178.5						822.6						1,608.7						792.1						9,352.6
Total revenue						$	5,441.8					$	1,208.0					$	834.7					$	1,717.9					$	924.8					$	10,127.2

(1) Excludes the operating results of ATC TIPL, which are reported as discontinued operations. See note 21 for further discussion.

Year Ended December 31, 2023						U.S. & Canada						Africa & APAC (1)						Europe						Latin America						Data Centers						Total
Non-lease property revenue						$	322.4					$	24.4					$	13.5					$	127.5					$	116.5					$	604.3
Services revenue						143.0						—						—						—						—						143.0
Total non-lease revenue						$	465.4					$	24.4					$	13.5					$	127.5					$	116.5					$	747.3
Property lease revenue						4,893.8						1,220.0						762.1						1,670.8						718.2						9,264.9
Total revenue						$	5,359.2					$	1,244.4					$	775.6					$	1,798.3					$	834.7					$	10,012.2

(1) Excludes the operating results of ATC TIPL, which are reported as discontinued operations. See note 21 for further discussion.

F-14

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Information about non-lease receivables, contract assets and contract liabilities from contracts with customers is as follows:

						December 31, 2025						December 31, 2024
Accounts receivable						$	103.0					$	97.4
Prepaids and other current assets						41.5						45.2
Notes receivable and other non-current assets						39.0						30.4
Unearned revenue (1)						85.6						86.7
Other non-current liabilities (1)						233.3						239.1

---

(1) Includes capital contributions related to DAS networks.

The Company records unearned revenue when payments are received from customers in advance of the completion of the Company’s performance obligations. Long-term unearned revenue is included in Other non-current liabilities.

During the year ended December 31, 2025, the Company recognized $133.1 million of revenue that was previously included in the contract liabilities balances, primarily arising from balances as of December 31, 2024.

The Company records unbilled receivables, which are included in Prepaids and other current assets, when it has completed a performance obligation prior to its ability to bill under the customer arrangement. Other contract assets are included in Notes receivable and other non-current assets. The Company recorded an immaterial change in unbilled receivables attributable to non-lease property revenue recognized during each of the years ended December 31, 2025 and 2024. The changes in contract assets attributable to revenue recognized during the years ended December 31, 2025 and 2024 were immaterial.

The Company does not disclose the value of unsatisfied performance obligations for agreements (i) with an original expected length of one year or less or (ii) for which it recognizes revenue at the amount to which it has the right to invoice for services performed.

Lease Accounting and Rent Expense—The Company accounts for leases using a right-of-use model, which recognizes that, at the date of commencement, a lessee has a financial obligation to make lease payments to the lessor for the right to use the underlying asset during the lease term. The lessee also recognizes a corresponding right-of-use asset related to this right.

The Company recognizes a right-of-use lease asset and lease liability for operating and finance leases. The right-of-use asset is measured as the sum of the lease liability, prepaid or accrued lease payments, any initial direct costs incurred and any other applicable amounts. The Company reviews its right-of-use assets for impairment whenever events, changes in circumstances or other evidence indicate that the carrying amount of the Company’s assets may not be recoverable. The Company reviews its right-of-use assets for indicators of impairment at the lowest level of identifiable cash flows, as part of its asset portfolio. Impairments primarily result from a site not having current tenant leases or from having expenses in excess of revenues. The Company records impairment charges, which are discussed in note 15, in Other operating expenses in the consolidated statements of operations in the period in which the Company identifies such impairment.

The calculation of the lease liability requires the Company to make certain assumptions for each lease, including lease term and discount rate implicit in each lease, which could significantly impact the gross lease obligation, the duration and the present value of the lease liability. When calculating the lease term, the Company considers the renewal, cancellation and termination rights available to the Company and the lessor. The Company determines the discount rate by calculating the incremental borrowing rate on a collateralized basis at the commencement of a lease or upon a change in the lease term.

Many of the leases underlying the Company’s sites have fixed rent escalations, which provide for periodic increases in the amount of ground rent payable by the Company over time. In addition, certain of the Company’s tenant leases require the Company to exercise available renewal options pursuant to the underlying ground lease if the tenant exercises its renewal option. The Company’s calculation of the lease liability includes the term of the underlying ground lease plus all periods, if any, for which failure to renew the lease imposes an economic penalty to the Company such that renewal appears to be reasonably assured.

The straight-line component of ground rent expense for the years ended December 31, 2025, 2024 and 2023 was $36.2 million, $46.8 million and $24.4 million, respectively.

Selling, General, Administrative and Development Expense—Selling, general and administrative expense consists of overhead expenses related to the Company’s property and services operations and corporate overhead costs not specifically allocable to any of the Company’s individual business operations. Development expense consists of costs related to the Company’s acquisition efforts, costs associated with new business initiatives and project cancellation costs.

F-15

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Stock-Based Compensation—Stock-based compensation expense is measured at the accounting measurement date based on the fair value of the award and is generally recognized as an expense over the service period, which typically represents the vesting period. The Company provides for accelerated vesting and extended exercise periods of stock options and restricted stock units upon an employee’s death or permanent disability, or upon an employee’s qualified retirement, provided certain eligibility criteria are met. Accordingly, the Company recognizes compensation expense for stock options and time-based restricted stock units (“RSUs”) over the shorter of (i) the vesting period or (ii) the period from the date of grant to the date the employee becomes eligible for such benefits due to death, disability or qualified retirement, which may occur upon grant. The expense recognized includes the impact of forfeitures as they occur. Equity awards typically vest ratably. Awards of RSUs and stock options granted prior to March 10, 2023 generally vest over four years. In December 2022, the Company’s Compensation and Human Capital Committee (the “Compensation Committee”) changed the terms of its awards to generally vest over three years. The change in vesting terms is applicable for new awards granted beginning on March 10, 2023 and does not change the vesting terms applicable to grants awarded prior to March 10, 2023.

The Company grants performance-based restricted stock units (“PSUs”) to its executive officers. Threshold, target and maximum parameters are established for a three-year performance period at the time of grant. The metrics are used to calculate the number of shares that will be issuable when the awards vest, which may range from zero to 200% of the target amounts. The Company recognizes compensation expense for PSUs over the three-year vesting period, subject to adjustment based on the date the employee becomes eligible for retirement benefits as well as performance relative to grant parameters. The Company’s PSUs granted in 2024 and certain of the PSUs granted in 2025 also include a market condition component.

The fair value of stock options is determined using the Black-Scholes option-pricing model and the fair value of RSUs and PSUs is based on the fair value of the Company’s common stock on the date of grant. For the component of the PSUs subject to a market condition, fair value is determined using a Monte Carlo simulation model, which uses multiple input variables to determine the probability of satisfying the market condition requirements. The Company recognizes all stock-based compensation expense in Selling, general, administrative and development expense.

In connection with the vesting of restricted stock units, the Company withholds from issuance a number of shares of common stock to satisfy certain employee tax withholding obligations arising from such vesting. The shares withheld are considered constructively retired. The Company recognizes the fair value of the shares withheld in Additional paid-in capital on the consolidated balance sheets. As of December 31, 2025, the Company has withheld from issuance an aggregate of 3.6 million shares, including 0.3 million shares related to the vesting of restricted stock units during the year ended December 31, 2025.

Litigation Costs—The Company periodically becomes involved in various claims and lawsuits that are incidental to its business. The Company regularly monitors the status of pending legal actions to evaluate both the magnitude and likelihood of any potential loss. The Company accrues for these potential losses when it is probable that a liability has been incurred and the amount of loss, or possible range of loss, can be reasonably estimated. Should the ultimate losses on contingencies or litigation vary from estimates, adjustments to those liabilities may be required. The Company also incurs legal costs in connection with these matters and records estimates of these expenses, which are reflected in Selling, general, administrative and development expense in the accompanying consolidated statements of operations.

Earnings Per Common Share—Basic and Diluted—Basic net income per common share represents net income attributable to American Tower Corporation common stockholders divided by the weighted average number of common shares outstanding during the period. Diluted net income per common share represents net income attributable to American Tower Corporation common stockholders divided by the weighted average number of common shares outstanding during the period and any dilutive common share equivalents, including (A) shares issuable upon the vesting of RSUs and exercise of stock options and (B) shares expected to be earned upon the achievement of the parameters established for PSUs, each to the extent not anti-dilutive. The Company uses the treasury stock method to calculate the effect of its outstanding RSUs, PSUs and stock options.

Retirement Plan—The Company has a 401(k) plan covering nearly all eligible employees who meet certain age and employment requirements. For the years ended December 31, 2025, 2024 and 2023, the Company matched 100% of the first 5% of a participant's contributions. For the years ended December 31, 2025, 2024 and 2023, the Company contributed $15.6 million, $15.0 million and $15.6 million to the plan, respectively.

Stonepeak Development Partnership— During the year ended December 31, 2024, the Company entered into an agreement with Stonepeak (as defined in note 14) to form a joint venture to construct a new data center in Denver, CO (the “Stonepeak Development Partnership”). At formation, the Company contributed assets with a value of $14.6 million to the Stonepeak Development Partnership and acquired a minority ownership interest (Stonepeak holds the controlling interests). The Company accounts for the Stonepeak Development Partnership as an equity method investment. Under this method, investments are recorded at cost, and are adjusted for the Company’s share of the entities’ income or loss and for distributions and

F-16

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

contributions. As of December 31, 2025, the carrying value of the investment was $33.7 million which is included in Other non-current assets in the consolidated balance sheets.

Discontinued Operations—The Company classifies the results of operations related to a disposal of assets and liabilities (“the disposal group”) in discontinued operations in the consolidated statements of operations if all of the following criteria are met: (a) the operations and cash flows of the disposal group can be clearly distinguished from the rest of the Company, (b) the disposal group meets the criteria to be classified as held for sale or has been sold or disposed of by other means and (c) the disposal represents a strategic shift that has or will have a major effect on the Company’s operations and financial results.

The results of operations classified as discontinued operations are reported in Loss from discontinued operations, net of taxes in the accompanying consolidated statements of operations for all periods presented. Historical financial information included in the notes to the consolidated financial statements is adjusted to reflect the classification of results of operations as discontinued operations.

Accounting Standards Updates—In December 2023, the FASB issued guidance which requires public entities to provide enhanced income tax disclosures on an annual basis. The new guidance requires an expanded rate reconciliation and the disaggregation of cash taxes paid by U.S. federal, U.S. state and foreign jurisdictions. The Company adopted this guidance on a retrospective basis for the fiscal year ended December 31, 2025. The adoption of this guidance did not have a material impact on the Company’s financial statements and related disclosures.

In November 2024, the FASB issued guidance which is intended to improve the disclosures about a public business entity’s expenses, primarily through additional disclosures about the types of expenses (including purchases of inventory, employee compensation, depreciation, amortization, and depletion) included in each relevant expense caption presented on the face of the income statement within continuing operations. The guidance is effective on a prospective basis, with the option for retrospective application, for annual periods beginning after December 15, 2026 and interim reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

In November 2025, the FASB issued guidance which is intended to more closely align hedge accounting with the economics of an entity’s risk management activities. The amendments are intended to better reflect those strategies in financial reporting by enabling entities to achieve and maintain hedge accounting for highly effective economic hedges of forecasted transactions. The guidance is effective on a prospective basis for annual periods beginning after December 15, 2026, and interim reporting periods within those annual reporting periods. The Company is currently evaluating the impact of this guidance on its consolidated financial statements and related disclosures.

2. PREPAID AND OTHER CURRENT ASSETS

Prepaid and other current assets consisted of the following:

			As of
			December 31, 2025						December 31, 2024
Prepaid assets			$	80.7					$	82.6
Prepaid income tax			66.7						77.2
Unbilled receivables			194.8						189.3
Value added tax and other consumption tax receivables			44.5						55.5
Other miscellaneous current assets			99.6						126.0
Prepaid and other current assets			$	486.3					$	530.6

F-17

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

3. PROPERTY AND EQUIPMENT

Property and equipment (including assets held under finance leases) consisted of the following:

			Estimated Useful Lives (years)						As of
			December 31, 2025						December 31, 2024
Towers (1)			Up to 30						$	16,754.6					$	15,745.0
Equipment (2)			3 - 20						5,697.3						4,921.8
Buildings and improvements			Up to 40						4,165.7						3,786.3
Land and improvements (3)			Up to 30						4,519.9						4,311.0
Construction-in-progress									1,323.8						1,298.4
Total									32,461.3						30,062.5
Less accumulated depreciation									(12,105.0)						(11,005.7)
Property and equipment, net									$	20,356.3					$	19,056.8

---

(1) Towers are amortized over the remaining estimated useful life of the tower, taking into account residual value, generally up to 30 years.

(2) Includes fiber, DAS and data center related assets.

(3) Estimated useful lives apply to improvements only.

Total depreciation expense for the years ended December 31, 2025, 2024 and 2023 was $1.1 billion, $1.1 billion and $1.4 billion, respectively. Depreciation expense includes amounts related to finance lease assets for the years ended December 31, 2025, 2024 and 2023 of $86.7 million, $86.5 million and $138.5 million, respectively.

Information about finance lease-related balances is as follows:

												As of December 31,
Finance leases:						Classification						2025						2024
Property and equipment						Towers						$	2,793.0					$	2,786.9
Accumulated depreciation												(1,701.7)						(1,638.7)
Property and equipment, net												$	1,091.3					$	1,148.2
Property and equipment						Buildings and improvements						$	185.8					$	185.1
Accumulated depreciation												(111.2)						(106.5)
Property and equipment, net												$	74.6					$	78.6
Property and equipment						Land						$	129.8					$	130.6
Accumulated depreciation												(0.0)						(0.2)
Property and equipment, net												$	129.8					$	130.4
Property and equipment						Equipment						$	36.3					$	35.0
Accumulated depreciation												(13.9)						(11.4)
Property and equipment, net												$	22.4					$	23.6

4. LEASES

The Company determines if an arrangement is a lease at the inception of the agreement. The Company considers an arrangement to be a lease if it conveys the right to control the use of the communications infrastructure or ground space underneath communications infrastructure for a period of time in exchange for consideration. The Company is both a lessor and a lessee.

Lessor—The Company is a lessor in most of its revenue arrangements, as property revenue is derived from tenant leases of specifically-identified, physically distinct space on or in the Company’s communications real estate assets. The Company’s lease arrangements with its tenants for its communications sites vary depending upon the region and the industry of the tenant and generally have initial non-cancellable terms of five to ten years with multiple renewal terms. The leases also contain

F-18

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

provisions that periodically increase the rent due, typically annually, based on a fixed escalation percentage or an inflationary index, or a combination of both. The Company structures its leases to include financial penalties if a tenant terminates the lease, which serve to disincentivize tenants from terminating the lease prior to the expiration of the lease term.

The Company’s leasing arrangements outside of the United States may require that the Company provide power to the communications site through an electrical grid connection, diesel fuel generators or other sources and permit the Company to pass through the costs of, or otherwise charge for, these services. Many arrangements require that the communications site has power for a specified percentage of time. In most cases, if delivery of power falls below the specified service level, a corresponding reduction in revenue is recorded. The Company has determined that this performance obligation is satisfied over time for the duration of the lease. In addition, the Company provides power to its data center customers, which is passed through, or otherwise charged, to customers pursuant to the terms of the customer power arrangement. Customer power arrangements are coterminous with such customer’s underlying lease and have the same pattern of transfer over the lease term. This performance obligation is generally satisfied over time for the duration of the lease. Fixed power revenue is recognized each month over the term of the lease. For variable power arrangements, the Company recognizes revenue each month as the uncertainty related to the consideration is resolved.

The Company typically has more than one tenant on a site and, by performing ordinary course repair and maintenance work, can often lease a site, either through renewing existing agreements or leasing to new tenants, for periods beyond the existing tenant lease term. Accordingly, the Company has minimal risk with respect to the residual value of its leased assets. Communications infrastructure assets are depreciated over their estimated useful lives, which generally do not exceed thirty years.

As of December 31, 2025, the Company does not have any material related party leases as a lessor. To the extent there are any intercompany leases, these are eliminated in consolidation.

Historically, the Company has been able to successfully renew its applicable leases as needed to ensure continuation of its revenue. Accordingly, the Company assumes that it will have access to the communications infrastructure or ground space underlying its sites when calculating future minimum rental receipts through the end of the respective terms. Future minimum rental receipts expected under non-cancellable operating lease agreements as of December 31, 2025, were as follows:

Fiscal Year						Amount (1) (2)
2026						$	8,693.2
2027						8,529.6
2028						7,145.9
2029						6,750.5
2030						5,412.6
Thereafter						17,474.1
Total						$	54,005.9

---

(1) Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.

(2) Balances represent contractual amounts owed with no adjustments made for expected collectibility.

The Company generally does not enter into sales-type leases or direct financing leases. If incentives are present in the Company’s leases, they are evaluated to determine proper treatment and, to the extent present, are recorded in Other current assets and Other non-current assets in the consolidated balance sheets and amortized on a straight line basis over the corresponding lease term as a non-cash reduction to revenue. As of December 31, 2025, the remaining weighted average amortization period of the Company’s lease incentives was 9 years. As of December 31, 2025, Other current assets and Other non-current assets include $47.7 million and $350.4 million, respectively, for lease incentives. In addition, the Company’s leases do not include any lessee purchase options.

F-19

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Lessee—The Company enters into arrangements as a lessee primarily for ground space underneath its communications sites. These arrangements are typically long-term lease agreements with initial non-cancellable terms of approximately five to ten years with one or more automatic or exercisable renewal periods and specified increases in lease payments upon renewal. The Company typically exercises its ground lease renewal options in order to utilize the assets used and provide ongoing tenant space on or in its communications sites through the end of the tenant lease term. Escalation clauses present in operating leases, excluding those tied to CPI or other inflation-based indices, are recognized on a straight-line basis over the estimated lease term of the applicable lease as a component of rent expense. Additionally, the escalations tied to CPI or another inflation-based index are considered variable lease payments. In certain circumstances, the Company enters into revenue sharing arrangements with the ground space owner, which results in variability in lease payments. In most markets outside of the United States, in the event there are no tenants on the communications site, the Company generally has unilateral termination rights and in certain situations, the lease is structured to allow for termination by the Company with minimal or no penalties. Ground lease arrangements usually include annual escalations and do not contain any residual value guarantees or restrictions on dividends, other financial obligations or other similar terms. The Company has entered into certain transactions whereby at the end of a lease, sublease or similar arrangement, the Company has the option to purchase the corresponding communications sites. These transactions are further described in note 17.

The Company’s lease liability is the present value of the remaining minimum rental payments to be made over the remaining lease term, including renewal options reasonably certain to be exercised. The Company also considers termination options and factors those into the determination of lease payments when appropriate. To determine the lease term, the Company considers all renewal periods that are reasonably certain to be exercised, taking into consideration all economic factors, including the communications site’s estimated economic life (generally thirty years) and the respective lease terms of the Company’s tenants under the existing lease arrangements on such site.

The Company assesses its right-of-use asset and other lease-related assets for impairment, as described in note 1. During the years ended December 31, 2025, 2024 and 2023, the Company recorded $7.9 million, $0.8 million and $6.7 million, respectively, of impairment expense related to these assets.

As of December 31, 2025, the Company does not have any material related party leases or finance leases as a lessee. The Company does not have any sale-leaseback arrangements as lessee and typically does not enter into leveraged leases.

The Company leases certain land, buildings, equipment and office space under operating leases and land and improvements, towers, equipment and vehicles under finance leases. As of December 31, 2025, operating lease assets were included in Right-of-use asset and finance lease assets were included in Property and equipment, net in the consolidated balance sheet.

Information about other lease-related balances is as follows:

						As of
						December 31, 2025						December 31, 2024
Operating leases:
Right-of-use asset						$	8,426.5					$	8,089.6
Current portion of lease liability						$	584.9					$	576.7
Lease liability						7,158.7						6,875.6
Total operating lease liability						$	7,743.6					$	7,452.3

As most of the Company’s leases do not specifically state an implicit rate, the Company uses a market-specific incremental borrowing rate consistent with the lease term as of the lease commencement date or upon a remeasurement event when calculating the present value of the remaining lease payments. The incremental borrowing rate reflects the cost to borrow on a securitized basis in each market. The remaining lease term does not reflect all renewal options available to the Company, only those renewal options that the Company has assessed as reasonably certain of being exercised taking into consideration the economic and other factors noted above.

F-20

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

The weighted-average remaining lease terms and incremental borrowing rates are as follows:

						As of
						December 31, 2025						December 31, 2024
Operating leases:
Weighted-average remaining lease term (years)						13.4						14.3
Weighted-average incremental borrowing rate						6.6		%				6.5		%

The following table sets forth the components of lease cost for the years ended December 31,:

						2025						2024						2023
Operating lease cost						$	1,131.4					$	994.2					$	1,084.1
Variable lease costs not included in lease liability (1)						351.3						489.2						434.5

---

(1) Primarily includes property tax paid on behalf of the landlord.

Supplemental cash flow information is as follows for the years ended December 31,:

						2025						2024						2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases						$	(1,108.5)					$	(1,202.7)					$	(1,264.8)
Non-cash items:
New operating leases (1)						$	154.6					$	230.0					$	245.7
Operating lease modifications and reassessments (2)						$	445.3					$	859.9					$	405.9
Reduction of operating lease liability due to the ATC TIPL Transaction						$	—					$	(766.4)					$	—

---

(1) Amount includes new operating leases and leases acquired in connection with acquisitions.

(2) For the year ended December 31, 2024, reflects a $515 million increase as a result of the Company’s change in estimated useful lives on January 1, 2024, as additional renewal options may be included.

As of December 31, 2025, the Company does not have material operating or financing leases that have not yet commenced.

Maturities of operating lease liabilities as of December 31, 2025 were as follows:

Fiscal Year						Operating Lease (1)
2026						$	1,028.4
2027						1,005.5
2028						959.3
2029						916.1
2030						865.6
Thereafter						7,201.7
Total lease payments						11,976.6
Less amounts representing interest						(4,233.0)
Total lease liability						7,743.6
Less current portion of lease liability						584.9
Non-current lease liability						$	7,158.7

---

(1) Balances are translated at the applicable period-end exchange rate, which may impact comparability between periods.

F-21

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

5. GOODWILL AND OTHER INTANGIBLE ASSETS

The changes in the carrying value of goodwill for each of the Company’s business segments were as follows:

						Property																														Services						Total
						U.S. & Canada						Africa & APAC (1)												Europe						Latin America						Data Centers
Balance as of December 31, 2023						$	4,638.6					$	504.9											$	3,051.9					$	966.1					$	2,920.0					$	2.0					$	12,083.5
Effect of foreign currency translation						(3.9)						11.6												(189.6)						(133.5)						—						—						(315.4)
Balance as of December 31, 2024						$	4,634.7					$	516.5											$	2,862.3					$	832.6					$	2,920.0					$	2.0					$	11,768.1
Other (2)						—						(6.1)												—						—						—						—						(6.1)
Impairments (3)						—						(6.5)												—						—						—						—						(6.5)
Effect of foreign currency translation						2.1						18.0												385.0						94.9						—						—						500.0
Balance as of December 31, 2025						$	4,636.8					$	521.9											$	3,247.3					$	927.5					$	2,920.0					$	2.0					$	12,255.5

---

(1) Excludes goodwill associated with the India reporting unit, which is reported as discontinued operations. See note 21 for further discussion.

(2) Other represents the goodwill associated with the sale of South Africa Fiber, which was sold during the year ended December 31, 2025.

(3) Includes $6.5 million of goodwill impairments associated with the Bangladesh reporting unit.

Goodwill Impairment

The Company reviews goodwill for impairment annually (as of December 31) or whenever events or circumstances indicate the carrying amount of an asset may not be recoverable, as further discussed in note 1.

For the year ended December 31, 2025, the Company estimated the fair value of the Bangladesh reporting unit using, among other things, indications of value received from third parties in connection with the Company’s review of various strategic alternatives for its Bangladesh operations. As a result, the Company recorded a goodwill impairment charge of $6.5 million. The goodwill impairment charge is recorded in Other operating expense in the consolidated statements of operations for the year ended December 31, 2025.

The Company’s other intangible assets subject to amortization consisted of the following:

									As of December 31, 2025																		As of December 31, 2024
			Estimated Useful Lives (years)						Gross Carrying Value						Accumulated Amortization						Net Book Value						Gross Carrying Value						Accumulated Amortization						Net Book Value
Acquired network location intangibles (1)			Up to 30						$	5,511.3					$	(2,798.4)					$	2,712.9					$	5,365.4					$	(2,659.8)					$	2,705.6
Acquired tenant-related intangibles			Up to 30						18,636.8						(7,609.3)						11,027.5						17,666.0						(6,823.7)						10,842.3
Acquired licenses and other intangibles			2-30						1,332.8						(542.5)						790.3						1,406.8						(480.4)						926.4
Total other intangible assets									$	25,480.9					$	(10,950.2)					$	14,530.7					$	24,438.2					$	(9,963.9)					$	14,474.3

---

(1) Acquired network location intangibles are amortized over the remaining estimated useful life of the tower, taking into account residual value, generally up to 30 years, as the Company considers these intangibles to be directly related to the tower assets.

The acquired network location intangibles represent the value to the Company of the incremental revenue growth that could potentially be obtained from leasing the excess capacity on acquired tower communications infrastructure. The acquired tenant-related intangibles typically represent the value to the Company of tenant contracts and relationships in place at the time of an acquisition or similar transaction, including assumptions regarding estimated renewals. Other intangibles represent the value of acquired licenses, trade name and in place leases. In place lease value represents the fair value of costs avoided in securing data center customers, including vacancy periods, legal costs and commissions. In place lease value also includes assumptions on similar costs avoided upon the renewal or extension of existing leases on a basis consistent with occupancy assumptions used in the fair value of other assets.

The Company amortizes its acquired intangible assets on a straight-line basis over their estimated useful lives. As of December 31, 2025, the remaining weighted average amortization period of the Company’s intangible assets was 20 years.

F-22

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Amortization of intangible assets for the years ended December 31, 2025, 2024 and 2023 was $879.7 million, $892.0 million and $1.4 billion, respectively.

Based on current exchange rates, the Company expects to record amortization expense as follows over the next five years:

Fiscal Year						Amount
2026						$	852.1
2027						834.9
2028						825.6
2029						808.9
2030						797.1

6. ACQUISITIONS

The Company evaluates each of its acquisitions under the accounting guidance framework to determine whether to treat an acquisition as an asset acquisition or a business combination. For those transactions treated as asset acquisitions, the purchase price is allocated to the assets or rights acquired and liabilities assumed, with no recognition of goodwill. For those transactions treated as business combinations, the estimates of the fair value of the assets or rights acquired and liabilities assumed at the date of the applicable acquisition are subject to adjustment during the measurement period (up to one year from the particular acquisition date), and may include an allocation to goodwill.

The fair value of these net assets acquired are based on management’s estimates and assumptions, as well as other information compiled by management, including valuations that utilize customary valuation procedures and techniques. While the Company believes that such preliminary estimates provide a reasonable basis for estimating the fair value of assets acquired and liabilities assumed, it evaluates any necessary information prior to finalization of the fair value. During the measurement period for those acquisitions accounted for as business combinations, the Company will adjust assets or liabilities if new information is obtained about facts and circumstances that existed as of the acquisition date that, if known, would have resulted in the revised estimated values of those assets or liabilities as of that date.

Impact of current year acquisitions—The Company typically acquires communications sites and other communications infrastructure assets from wireless carriers or other tower operators and subsequently integrates those sites and related assets into its existing portfolio of communications sites and related assets. In the United States, acquisitions may also include data center facilities and related assets. The financial results of the Company’s acquisitions have been included in the Company’s consolidated statements of operations for the year ended December 31, 2025 from the date of the respective acquisition. The date of acquisition, and by extension the point at which the Company begins to recognize the results of an acquisition, may depend on, among other things, the receipt of contractual consents, the commencement and extent of leasing arrangements and the timing of the transfer of title or rights to the assets, which may be accomplished in phases. Communications sites acquired from communications service providers may never have been operated as a business and may instead have been utilized solely by the seller as a component of its network infrastructure. An acquisition may or may not involve the transfer of business operations or employees.

For those acquisitions accounted for as business combinations, the Company recognizes acquisition and merger related expenses in the period in which they are incurred and services are received; for transactions accounted for as asset acquisitions, these costs are capitalized as part of the purchase price. Acquisition, disposition and merger related costs may include finder’s fees, advisory, legal, accounting, valuation and other professional or consulting fees and general administrative costs directly related to completing the transaction. Integration costs include incremental and non-recurring costs necessary to convert data and systems, retain employees and otherwise enable the Company to operate acquired businesses or assets efficiently. The Company records acquisition, disposition and merger related expenses not subject to capitalization, as well as integration costs for all transactions, in Other operating expenses in the consolidated statements of operations.

During the years ended December 31, 2025, 2024 and 2023, the Company recorded acquisition, disposition and merger related expenses for business combinations, dispositions and non-capitalized asset acquisition costs and integration costs as follows:

						Year Ended December 31,
						2025						2024						2023
Acquisition, disposition and merger related expenses						$	0.2					$	3.3					$	16.9
Integration costs						$	5.2					$	8.9					$	16.3

F-23

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

During the years ended December 31, 2025, 2024 and 2023, the Company recorded net benefits of $14.7 million, $23.4 million and $10.3 million related to pre-acquisition contingencies and settlements, respectively.

2025 Transactions

The estimated aggregate impact of the acquisitions completed in 2025 on the Company’s revenues and gross margin for the year ended December 31, 2025 was not material to the Company’s operating results. Acquisitions completed in 2025 were included in the Company’s U.S. & Canada, Europe and Data Centers property segments.

*Other Acquisitions—*During the year ended December 31, 2025, the Company acquired a total of 312 communications sites, as well as other communications infrastructure assets, data center facilities and related assets, in the United States, Canada, France and Spain for an aggregate purchase price of $403.6 million. Of the aggregate purchase price, $24.1 million, is reflected as a payable in the consolidated balance sheet as of December 31, 2025, which includes accrued contingent consideration and the CoreSite DE1 Note (as defined in note 8). These acquisitions were accounted for as asset acquisitions.

The following table summarizes the allocations of the purchase prices for the fiscal year 2025 acquisitions based upon their estimated fair value at the date of acquisition:

						Other
Current assets						$	11.7
Property and equipment						251.2
Intangible assets (1):
Tenant-related intangible assets						77.2
Network location intangible assets						51.8
Other intangible assets						6.4
Other non-current assets						33.2
Current liabilities						(1.5)
Other non-current liabilities						(26.4)
Net assets acquired						403.6
Purchase price						$	403.6

---

(1) Tenant-related intangible assets and network location intangible assets are amortized on a straight-line basis over the estimated useful lives of the assets.

In addition to the acquisitions discussed above, during the year ended December 31, 2025, the Company purchased 104 towers in connection with the AT&T transaction described in note 17 for an aggregate purchase price of $82.0 million.

During the year ended December 31, 2025, the Company made 91.7 million EUR (approximately $107.2 million) of deferred payments, including post-closing adjustments, associated with the Company’s acquisition of the European and Latin American tower divisions from Telxius Telecom, S.A. in 2021 (the “Telxius Acquisition”), which is included in Deferred financing costs and other financing activities in the cash flows from financing activities in the Company’s consolidated statements of cash flows.

F-24

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

7. ACCRUED EXPENSES

Accrued expenses consisted of the following:

			As of
			December 31, 2025						December 31, 2024
Accrued construction costs			$	195.6					$	166.7
Accrued income tax payable			26.5						20.6
Accrued pass-through costs			65.6						56.8
Amounts payable for acquisitions (1)			128.0						106.4
Amounts payable to tenants			70.9						74.7
Accrued property and real estate taxes			157.0						199.3
Accrued rent			52.0						54.7
Payroll and related withholdings			137.6						129.6
Other accrued expenses			279.3						273.2
Accrued expenses			$	1,112.5					$	1,082.0

---

(1)As of December 31, 2025 and December 31, 2024 includes $106.9 million and $94.9 million of deferred payments, respectively, including post-closing adjustments, associated with the Telxius Acquisition due in 2026 and 2025, respectively.

F-25

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

8. LONG-TERM OBLIGATIONS

Outstanding amounts under the Company’s long-term obligations, reflecting discounts, premiums and debt issuance costs, consisted of the following:

			As of
			December 31, 2025						December 31, 2024						Contractual Interest Rate (1)						Maturity Date (1)
2021 Multicurrency Credit Facility (2)			$	380.0					$	—					4.839		%				January 28, 2028
2021 Term Loan (2)			998.1						997.9						4.839		%				January 28, 2028
2021 Credit Facility (2)			—						—						—		%				January 28, 2030
2.950% senior notes (3)			—						650.0						N/A						N/A
2.400% senior notes (4)			—						749.7						N/A						N/A
1.375% senior notes (5)(6)			—						517.3						N/A						N/A
4.000% senior notes (7)			—						749.4						N/A						N/A
1.300% senior notes (8)			—						499.3						N/A						N/A
4.400% senior notes (9)			499.9						499.3						4.400		%				February 15, 2026
1.600% senior notes			699.7						698.5						1.600		%				April 15, 2026
1.950% senior notes (6)			586.9						516.4						1.950		%				May 22, 2026
1.450% senior notes			598.9						597.4						1.450		%				September 15, 2026
3.375% senior notes			998.5						996.6						3.375		%				October 15, 2026
3.125% senior notes			399.6						399.3						3.125		%				January 15, 2027
2.750% senior notes			749.0						748.0						2.750		%				January 15, 2027
0.450% senior notes (6)			879.7						774.1						0.450		%				January 15, 2027
0.400% senior notes (6)			585.8						515.0						0.400		%				February 15, 2027
3.650% senior notes			648.0						646.4						3.650		%				March 15, 2027
4.125% senior notes (6)			703.1						618.5						4.125		%				May 16, 2027
3.55% senior notes			748.7						747.9						3.550		%				July 15, 2027
3.600% senior notes			697.9						697.0						3.600		%				January 15, 2028
0.500% senior notes (6)			878.3						772.6						0.500		%				January 15, 2028
1.500% senior notes			648.5						647.8						1.500		%				January 31, 2028
5.500% senior notes			696.5						695.0						5.500		%				March 15, 2028
5.250% senior notes			646.4						645.2						5.250		%				July 15, 2028
5.800% senior notes			745.9						744.6						5.800		%				November 15, 2028
5.200% senior notes			645.1						643.7						5.200		%				February 15, 2029
3.950% senior notes			596.0						594.8						3.950		%				March 15, 2029
0.875% senior notes (6)			878.2						773.0						0.875		%				May 21, 2029
3.800% senior notes			1,642.4						1,640.5						3.800		%				August 15, 2029
2.900% senior notes			746.0						745.1						2.900		%				January 15, 2030
5.000% senior notes			594.4						593.2						5.000		%				January 31, 2030
4.900% senior notes			848.0						—						4.900		%				March 15, 2030
3.900% senior notes (6)			583.3						512.9						3.900		%				May 16, 2030
2.100% senior notes			745.2						744.1						2.100		%				June 15, 2030
0.950% senior notes (6)			583.1						512.6						0.950		%				October 5, 2030
1.875% senior notes			795.2						794.3						1.875		%				October 15, 2030
2.700% senior notes			696.3						695.6						2.700		%				April 15, 2031
4.625% senior notes (6)			582.2						511.7						4.625		%				May 16, 2031
2.300% senior notes			694.5						693.6						2.300		%				September 15, 2031
1.000% senior notes (6)			758.8						667.6						1.000		%				January 15, 2032
4.050% senior notes			644.4						643.7						4.050		%				March 15, 2032
3.625% senior notes (6)			583.9						—						3.625		%				May 30, 2032
4.700% senior notes			840.4						—						4.700		%				December 15, 2032
5.650% senior notes			792.3						791.4						5.650		%				March 15, 2033
1.250% senior notes (6)			582.4						512.1						1.250		%				May 21, 2033
5.550% senior notes			842.2						841.4						5.550		%				July 15, 2033
5.900% senior notes			742.9						742.2						5.900		%				November 15, 2033

F-26

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

5.450% senior notes			641.5						640.6						5.450		%				February 15, 2034
4.100% senior notes (6)			580.8						510.5						4.100		%				May 16, 2034
5.400% senior notes			592.5						591.9						5.400		%				January 31, 2035
5.350% senior notes			731.4						—						5.350		%				March 15, 2035
3.700% senior notes			592.8						592.6						3.700		%				October 15, 2049
3.100% senior notes			1,039.1						1,038.8						3.100		%				June 15, 2050
2.950% senior notes			1,024.5						1,023.8						2.950		%				January 15, 2051
Total American Tower Corporation debt			35,409.2						34,174.9
Series 2015-2 Notes (10)			—						524.7						N/A						N/A
Series 2018-1A Securities (11)			498.3						497.6						3.652		%				March 15, 2028
Series 2023-1A Securities (12)			1,291.7						1,288.0						5.490		%				March 15, 2028
Other subsidiary debt (13)			5.2						—						Various						Various
Total American Tower subsidiary debt			1,795.2						2,310.3
Finance lease obligations			15.9						16.6
Total			37,220.3						36,501.8
Less current portion of long-term obligations			(3,387.8)						(3,693.0)
Long-term obligations			$	33,832.5					$	32,808.8

---

(1)Reflects interest rate or maturity date as of December 31, 2025.

(2)Accrues interest at a variable rate.

(3)Repaid in full on January 14, 2025 using cash on hand and borrowings under the 2021 Multicurrency Credit Facility (as defined below).

(4)Repaid in full on March 14, 2025 using proceeds from the issuance of the 4.900% Notes and 5.350% Notes (each as defined below).

(5)Repaid in full on April 3, 2025 using borrowings under the 2021 Multicurrency Credit Facility and cash on hand.

(6)Notes are denominated in EUR.

(7)Repaid in full on May 30, 2025 using borrowings under the 2021 Credit Facility (as defined below) and cash on hand.

(8)Repaid in full on September 12, 2025 using borrowings under the 2021 Credit Facility.

(9)Repaid in full on February 13, 2026 using borrowings under the 2021 Credit Facility and cash on hand.

(10)Repaid in full on June 16, 2025 using borrowings under the 2021 Multicurrency Credit Facility and cash on hand.

(11)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2048.

(12)Maturity date reflects the anticipated repayment date; final legal maturity is March 15, 2053.

(13)As of December 31, 2025, includes the Bangladesh Term Loan and the CoreSite DE1 Note (each as defined below).

Current portion of long-term obligations*—*The Company’s current portion of long-term obligations primarily includes (i) $500.0 million aggregate principal amount of the Company’s 4.400% senior unsecured notes due February 15, 2026, (ii) $700.0 million aggregate principal amount of the Company’s 1.600% senior unsecured notes due April 15, 2026, (iii) 500.0 million EUR aggregate principal amount of the Company’s 1.950% senior unsecured notes due May 22, 2026, (iv) $600.0 million aggregate principal amount of the Company’s 1.450% senior unsecured notes due September 15, 2026, and (v) $1.0 billion aggregate principal amount of the Company’s 3.375% senior unsecured notes due October 15, 2026.

American Tower Corporation Debt

Bank Facilities

*Amendments to Bank Facilities—*On January 28, 2025, the Company amended its (i) $6.0 billion senior unsecured multicurrency revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Multicurrency Credit Facility”), (ii) $4.0 billion senior unsecured revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Credit Facility”) and (iii) $1.0 billion unsecured term loan, as amended and restated in December 2021, as further amended (the “2021 Term Loan”).

These amendments, among other things,

i.extend the maturity dates of the 2021 Multicurrency Credit Facility and the 2021 Credit Facility to January 28, 2028 and January 28, 2030, respectively;

ii.extend the maturity date of the 2021 Term Loan to January 28, 2028; and

iii.update the Applicable Margins (as defined in the loan agreements).

*2021 Multicurrency Credit Facility—*During the year ended December 31, 2025, the Company borrowed an aggregate of $2.4 billion, including 492.0 million EUR ($529.1 million as of the borrowing date) and repaid an aggregate of $2.0 billion,

F-27

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

including 492.0 million EUR ($549.9 million as of the repayment date) of revolving indebtedness under the 2021 Multicurrency Credit Facility. The Company used the borrowings to repay outstanding indebtedness, including the 2.950% Notes, the 1.375% Notes and the Series 2015-2 Notes (each as defined below), and for general corporate purposes.

*2021 Credit Facility—*During the year ended December 31, 2025, the Company borrowed an aggregate of $3.7 billion and repaid an aggregate of $3.7 billion of revolving indebtedness under the 2021 Credit Facility. The Company used the borrowings to repay outstanding indebtedness, including the 4.000% Notes and the 1.300% Notes (each as defined below), and for general corporate purposes.

As of December 31, 2025, the key terms under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan were as follows:

			Outstanding Principal Balance						Undrawn letters of credit						Maturity Date						Current margin over SOFR or EURIBOR (1)						Current commitment fee (2)
2021 Multicurrency Credit Facility			$	380.0					$	7.0					January 28, 2028			(3)			0.875		%				0.100		%
2021 Credit Facility			$	—					$	29.8					January 28, 2030			(3)			0.875		%				0.100		%
2021 Term Loan			$	1,000.0					N/A						January 28, 2028						0.875		%				N/A

---

(1) Secured Overnight Financing Rate (“SOFR”) applies to the USD denominated borrowings under the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan. Euro Interbank Offer Rate (“EURIBOR”) applies for EURIBOR based borrowings.

(2) Fee on undrawn portion of each credit facility.

(3) Subject to two optional renewal periods.

The loan agreements for each of the 2021 Multicurrency Credit Facility, the 2021 Credit Facility, and the 2021 Term Loan contain certain reporting, information, financial and operating covenants and other restrictions (including limitations on additional debt, guaranties, sales of assets and liens) with which the Company must comply. Failure to comply with the financial and operating covenants of the loan agreements could not only prevent the Company from being able to borrow additional funds under the revolving credit facilities, but may constitute a default, which could result in, among other things, the amounts outstanding under the applicable agreement, including all accrued interest and unpaid fees, becoming immediately due and payable.

Senior Notes

Repayments of Senior Notes

*Repayment of 2.950% Senior Notes—*On January 14, 2025, the Company repaid $650.0 million aggregate principal amount of the Company’s 2.950% senior unsecured notes due 2025 (the “2.950% Notes”) upon their maturity. The 2.950% Notes were repaid using cash on hand and borrowings under the 2021 Multicurrency Credit Facility. Upon completion of the repayment, none of the 2.950% Notes remained outstanding.

*Repayment of 2.400% Senior Notes—*On March 14, 2025, the Company repaid $750.0 million aggregate principal amount of the Company’s 2.400% senior unsecured notes due 2025 (the “2.400% Notes”) upon their maturity. The 2.400% Notes were repaid using proceeds from the issuance of the 4.900% Notes and the 5.350% Notes. Upon completion of the repayment, none of the 2.400% Notes remained outstanding.

Repayment of 1.375% Senior Notes—On April 3, 2025, the Company repaid 500.0 million EUR aggregate principal amount of the Company’s 1.375% senior unsecured notes due 2025 (the “1.375% Notes”) upon their maturity. The 1.375% Notes were repaid using borrowings under the 2021 Multicurrency Credit Facility and cash on hand. Upon completion of the repayment, none of the 1.375% Notes remained outstanding.

Repayment of 4.000% Senior Notes—On May 30, 2025, the Company repaid $750.0 million aggregate principal amount of the Company’s 4.000% senior unsecured notes due 2025 (the “4.000% Notes”) upon their maturity. The 4.000% Notes were repaid using borrowings under the 2021 Credit Facility and cash on hand. Upon completion of the repayment, none of the 4.000% Notes remained outstanding.

Repayment of 1.300% Senior Notes—On September 12, 2025, the Company repaid $500.0 million aggregate principal amount of the Company’s 1.300% senior unsecured notes due 2025 (the “1.300% Notes”) upon their maturity. The 1.300% Notes were repaid using borrowings under the 2021 Credit Facility. Upon completion of the repayment, none of the 1.300% Notes remained outstanding.

F-28

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Offerings of Senior Notes

*4.900% Senior Notes and 5.350% Senior Notes Offering—*On March 14, 2025, the Company completed a registered public offering of $650.0 million aggregate principal amount of 4.900% senior unsecured notes due 2030 (the “Initial 4.900% Notes”) and $350.0 million aggregate principal amount of 5.350% senior unsecured notes due 2035 (the “Initial 5.350% Notes”). The net proceeds from this offering were approximately $988.9 million, after deducting commissions and estimated expenses. The Company used the net proceeds to repay the 2.400% Notes, to repay existing indebtedness under the 2021 Multicurrency Credit Facility and for general corporate purposes.

On September 16, 2025, the Company completed a registered public offering of $200.0 million aggregate principal amount through a reopening of the Initial 4.900% Notes (the “Reopened 4.900% Notes” and, collectively with the Initial 4.900% Notes, the “4.900% Notes”) and $375.0 million aggregate principal amount through a reopening of the Initial 5.350% Notes (the “Reopened 5.350% Notes” and, collectively with the Initial 5.350% Notes, the “5.350% Notes”). The net proceeds from this offering were approximately $587.8 million, after deducting commissions and estimated expenses. The Company used the net proceeds to repay existing indebtedness under the 2021 Credit Facility and for general corporate purposes.

*3.625% Senior Notes Offering—*On May 30, 2025, the Company completed a registered public offering of 500.0 million EUR (approximately $567.4 million at the date of issuance) aggregate principal amount of 3.625% senior unsecured notes due 2032 (the “3.625% Notes”). The net proceeds from this offering were approximately 496.8 million EUR (approximately $563.7 million at the date of issuance), after deducting commissions and estimated expenses. The Company used the net proceeds to repay existing indebtedness under the 2021 Multicurrency Credit Facility and for general corporate purposes.

*4.700% Senior Notes Offering—*On December 5, 2025, the Company completed a registered public offering of $850.0 million aggregate principal amount of 4.700% senior unsecured notes due 2032 (the “4.700% Notes,” and, collectively with the 4.900% Notes, the 5.350% Notes and the 3.625% Notes, the “Notes”). The net proceeds from this offering were approximately $839.5 million, after deducting commissions and estimated expenses. The Company used the net proceeds to repay existing indebtedness under the 2021 Credit Facility.

The following table outlines key terms related to the Company’s outstanding senior notes as of December 31, 2025:

									Adjustments to Principal Amount (1)
			Aggregate Principal Amount						2025						2024						Interest payments due (2)						Issue Date						Par Call Date (3)
4.400% Notes			$	500.0					(0.1)						(0.7)						February 15 and August 15						January 12, 2016						November 15, 2025
1.600% Notes			700.0						(0.3)						(1.5)						April 15 and October 15						March 29, 2021						March 15, 2026
1.950% Notes (4)			587.3						(0.4)						(1.3)						May 22						May 22, 2018						February 22, 2026
1.450% Notes			600.0						(1.1)						(2.6)						March 15 and September 15						September 27, 2021						August 15, 2026
3.375% Notes			1,000.0						(1.5)						(3.4)						April 15 and October 15						May 13, 2016						July 15, 2026
3.125% Notes			400.0						(0.4)						(0.7)						January 15 and July 15						September 30, 2016						October 15, 2026
2.750% Notes			750.0						(1.0)						(2.0)						January 15 and July 15						October 3, 2019						November 15, 2026
0.450% Notes (4)			880.9						(1.2)						(2.4)						January 15						May 21, 2021						November 15, 2026
0.400% Notes (4)			587.3						(1.5)						(2.7)						February 15						October 5, 2021						December 15, 2026
3.650% Notes			650.0						(2.0)						(3.6)						March 15 and September 15						April 1, 2022						February 15, 2027
4.125% Notes (4)			704.7						(1.6)						(2.7)						May 16						May 16, 2023						March 16, 2027
3.55% Notes			750.0						(1.3)						(2.1)						January 15 and July 15						June 30, 2017						April 15, 2027
3.600% Notes			700.0						(2.1)						(3.0)						January 15 and July 15						December 8, 2017						October 15, 2027
0.500% Notes (4)			880.9						(2.6)						(3.9)						January 15						September 10, 2020						October 15, 2027
1.500% Notes			650.0						(1.5)						(2.2)						January 31 and July 31						November 20, 2020						November 30, 2027
5.500% Notes			700.0						(3.5)						(5.0)						March 15 and September 15						March 3, 2023						February 15, 2028
5.250% Notes			650.0						(3.6)						(4.8)						January 15 and July 15						May 25, 2023						June 15, 2028
5.800% Notes			750.0						(4.1)						(5.4)						May 15 and November 15						September 15, 2023						October 15, 2028
5.200% Notes			650.0						(4.9)						(6.3)						February 15 and August 15						March 7, 2024						January 15, 2029
3.950% Notes			600.0						(4.0)						(5.2)						March 15 and September 15						March 15, 2019						December 15, 2028

F-29

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

0.875% Notes (4)			880.9						(2.7)						(3.5)						May 21						May 21, 2021						February 21, 2029
3.800% Notes			1,650.0						(7.6)						(9.5)						February 15 and August 15						June 13, 2019						May 15, 2029
2.900% Notes			750.0						(4.0)						(4.9)						January 15 and July 15						January 10, 2020						October 15, 2029
5.000% Notes			600.0						(5.6)						(6.8)						January 31 and July 31						November 21, 2024						December 31, 2029
4.900% Notes (5)			850.0						(2.0)						—						March 15 and September 15						March 14, 2025						February 15, 2030
3.900% Notes (4)			587.3						(4.0)						(4.8)						May 16						May 29, 2024						February 16, 2030
2.100% Notes			750.0						(4.8)						(5.9)						June 15 and December 15						June 3, 2020						March 15, 2030
0.950% Notes (4)			587.3						(4.2)						(5.1)						October 5						October 5, 2021						July 5, 2030
1.875% Notes			800.0						(4.8)						(5.7)						April 15 and October 15						September 28, 2020						July 15, 2030
2.700% Notes			700.0						(3.7)						(4.4)						April 15 and October 15						March 29, 2021						January 15, 2031
4.625% Notes (4)			587.3						(5.1)						(6.0)						May 16						May 16, 2023						February 16, 2031
2.300% Notes			700.0						(5.5)						(6.4)						March 15 and September 15						September 27, 2021						June 15, 2031
1.000% Notes (4)			763.4						(4.6)						(5.3)						January 15						September 10, 2020						October 15, 2031
4.050% Notes			650.0						(5.6)						(6.3)						March 15 and September 15						April 1, 2022						December 15, 2031
3.625% Notes (4)			587.3						(3.4)						—						May 30						May 30, 2025						March 30, 2032
4.700% Notes			850.0						(9.6)						—						June 15 and December 15						December 5, 2025						October 15, 2032
5.650% Notes			800.0						(7.7)						(8.6)						March 15 and September 15						March 3, 2023						December 15, 2032
1.250% Notes (4)			587.3						(4.9)						(5.6)						May 21						May 21, 2021						February 21, 2033
5.550% Notes			850.0						(7.8)						(8.6)						January 15 and July 15						May 25, 2023						April 15, 2033
5.900% Notes			750.0						(7.1)						(7.8)						May 15 and November 15						September 15, 2023						August 15, 2033
5.450% Notes			650.0						(8.5)						(9.4)						February 15 and August 15						March 7, 2024						November 15, 2033
4.100% Notes (4)			587.3						(6.5)						(7.2)						May 16						May 29, 2024						February 16, 2034
5.400% Notes			600.0						(7.5)						(8.1)						January 31 and July 31						November 21, 2024						October 31, 2034
5.350% Notes (5)			725.0						6.4						—						March 15 and September 15						March 14, 2025						December 15, 2034
3.700% Notes			600.0						(7.2)						(7.4)						April 15 and October 15						October 3, 2019						April 15, 2049
3.100% Notes (6)			1,050.0						(10.9)						(11.2)						June 15 and December 15						June 3, 2020						December 15, 2049
2.950% Notes (7)			1,050.0						(25.5)						(26.2)						January 15 and July 15						November 20, 2020						July 15, 2050

---

(1) Includes unamortized discounts, premiums and debt issuance costs.

(2) Accrued and unpaid interest on USD denominated notes is payable in USD semi-annually in arrears and will be computed from the issue date on the basis of a 360-day year comprised of twelve 30-day months. Interest on EUR denominated notes is payable in EUR annually in arrears and will be computed on the basis of the actual number of days in the period for which interest is being calculated and the actual number of days from and including the last date on which interest was paid on the notes, beginning on the issue date.

(3) The Company may redeem the notes at any time, in whole or in part, at a redemption price equal to 100% of the principal amount of the notes plus a make-whole premium, together with accrued interest to the redemption date. If the Company redeems the notes on or after the par call date, the Company will not be required to pay a make-whole premium.

(4) Notes are denominated in EUR.

(5) The original issue date for the Initial 4.900% Notes and the Initial 5.350% Notes was March 14, 2025. The issue date for the Reopened 4.900% Notes and the Reopened 5.350% was September 16, 2025.

(6) The original issue date for the initial 3.100% Notes was June 3, 2020. The issue date for the reopened 3.100% Notes was September 28, 2020.

(7) The original issue date for the initial 2.950% Notes was November 20, 2020. The issue date for the reopened 2.950% Notes was September 27, 2021.

The Company may redeem each series of senior notes at any time, subject to the terms of the applicable supplemental indenture, in whole or in part, at a redemption price equal to 100% of the principal amount of the notes plus a make-whole premium, as applicable, together with accrued interest to the redemption date. In addition, if the Company undergoes a change of control and corresponding ratings decline, each as defined in the applicable supplemental indenture for the notes, the Company may be required to repurchase all of the applicable notes at a purchase price equal to 101% of the aggregate principal amount of such notes, plus accrued and unpaid interest (including additional interest, if any), up to but not including the repurchase date. The notes rank equally in right of payment with all of the Company’s other senior unsecured debt obligations and are structurally subordinated to all existing and future indebtedness and other obligations of its subsidiaries.

Each applicable supplemental indenture for the notes contains certain covenants that restrict the Company’s ability to merge, consolidate or sell assets and its (together with its subsidiaries’) ability to incur liens. These covenants are subject to a number

F-30

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

of exceptions, including that the Company and its subsidiaries may incur certain liens on assets, mortgages or other liens securing indebtedness if the aggregate amount of indebtedness secured by such liens does not exceed 3.5x Adjusted EBITDA, as defined in the applicable supplemental indenture. As of December 31, 2025, the Company was in compliance with each of these covenants.

American Tower Subsidiary Debt

Securitization

As of December 31, 2025, the Company has a securitization in place. Cash flows generated by the communications sites that secure the securitized debt of the Company are only available for payment of such debt and are not available to pay the Company’s other obligations or the claims of its creditors. However, subject to certain restrictions, the Company holds the right to receive the excess cash flows not needed to service the securitized debt and other obligations arising out of the securitization. The securitized debt is the obligation of the issuers thereof or borrowers thereunder, as applicable, and their subsidiaries, and not of the Company or its other subsidiaries.

American Tower Secured Revenue Notes and Repayment of Series 2015-2 Notes—In May 2015, GTP Acquisition Partners I, LLC, one of the Company’s wholly owned subsidiaries, refinanced existing debt with cash on hand and proceeds from a private issuance (the “2015 Securitization”) of (i) $350.0 million of American Tower Secured Revenue Notes, Series 2015-1, Class A, which were subsequently repaid on the June 2020 payment date, and (ii) $525.0 million of American Tower Secured Revenue Notes, Series 2015-2, Class A (the “Series 2015-2 Notes”). On the June 2025 payment date, the Company repaid $525.0 million aggregate principal amount outstanding under the Series 2015-2 Notes, pursuant to the terms of the agreements governing such securities. The repayment was funded with borrowings under the 2021 Multicurrency Credit Facility and cash on hand. Following such repayment, no notes were outstanding under the 2015 Securitization.

Secured Tower Revenue Securities, Series 2023-1, Subclass A and Series 2023-1, Subclass R, Series 2018-1, Subclass A and Series 2018-1, Subclass R—On March 13, 2023, the Company completed a securitization transaction (the “2023 Securitization”), in which American Tower Trust I (the “Trust”) issued $1.3 billion aggregate principal amount of Secured Tower Revenue Securities, Series 2023-1, Subclass A (the “Series 2023-1A Securities”). To satisfy the applicable risk retention requirements of Regulation RR promulgated under the Securities Exchange Act of 1934, as amended (the “Exchange Act” and, such requirements, the “Risk Retention Rules”), the Trust issued, and one of the Company’s affiliates purchased, $68.5 million aggregate principal amount of Secured Tower Revenue Securities, Series 2023-1, Subclass R (the “Series 2023-1R Securities” and, together with the Series 2023-1A Securities, the “2023 Securities”) to retain an “eligible horizontal residual interest” (as defined in the Risk Retention Rules) in an amount equal to at least 5% of the fair value of the 2023 Securities.

On March 29, 2018, the Company completed a securitization transaction (the “2018 Securitization,” and, together with the 2023 Securitization, the “Trust Securitization”), in which the Trust issued $500.0 million aggregate principal amount of Secured Tower Revenue Securities, Series 2018-1, Subclass A (the “Series 2018-1A Securities”). To satisfy the Risk Retention Rules, the Trust issued, and one of the Company’s affiliates purchased, $26.4 million aggregate principal amount of Secured Tower Revenue Securities, Series 2018-1, Subclass R (the “Series 2018-1R Securities” and, together with the Series 2018-1A Securities, the “2018 Securities”) to retain an “eligible horizontal residual interest” (as defined in the Risk Retention Rules) in an amount equal to at least 5% of the fair value of the 2018 Securities.

The assets of the Trust consist of a nonrecourse loan broken into components or “componentized” (the “Loan”), which secures each of the 2018 Securities and the 2023 Securities. The AMT Asset Subs are jointly and severally liable under the Loan, which is secured primarily by mortgages on the AMT Asset Subs’ interests in 5,023 broadcast and wireless communications towers and related assets (the “Trust Sites”).

The 2023 Securities correspond to components of the Loan made to the AMT Asset Subs pursuant to the Second Supplement and Amendment dated as of March 13, 2023 to the Second Amended and Restated Loan and Security Agreement dated as of March 29, 2018 (the “Loan Agreement,” which continues to govern the 2018 Securities, and collectively, the “Trust Loan Agreement”).

The 2023 Securities (a) represent a pass-through interest in the components of the Loan corresponding to the 2023 Securities and (b) have an expected life of approximately five years with a final repayment date in March 2053. The Series 2023-1A Securities and the Series 2023-1R Securities have interest rates of 5.490% and 5.735%, respectively. Subject to certain limited exceptions described below, no payments of principal will be required to be made on the components of the Loan corresponding to the 2023 Securities prior to the monthly payment date in March 2028, which is the anticipated repayment date for those components.

F-31

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

The 2018 Securities (a) represent a pass-through interest in the components of the Loan corresponding to the 2018 Securities and (b) have an expected life of approximately ten years with a final repayment date in March 2048. The Series 2018-1A Securities have an interest rate of 3.652% and the Series 2018-1R Securities have an interest rate of 4.459%. Subject to certain limited exceptions described below, no payments of principal will be required to be made on the components of the Loan corresponding to the 2018 Securities prior to the monthly payment date in March 2028, which is the anticipated repayment date for such components.

The AMT Asset Subs are required to make monthly payments of interest on the Loan. The debt service on the Loan will be paid solely from the cash flows generated from the operation of the Trust Sites held by the AMT Asset Subs.

The Loan is secured by (1) mortgages, deeds of trust and deeds to secure debt on substantially all of the Trust Sites and their operating cash flows, (2) a security interest in substantially all of the AMT Asset Subs’ personal property and fixtures and (3) the AMT Asset Subs’ rights under that certain management agreement among the AMT Asset Subs and SpectraSite Communications, LLC entered into in March 2013. American Tower Holding Sub, LLC (the “Guarantor”), whose only material assets are its equity interests in each of the AMT Asset Subs, and American Tower Guarantor Sub, LLC whose only material asset is its equity interests in the Guarantor, have each guaranteed repayment of the Loan and pledged their equity interests in their respective subsidiary or subsidiaries as security for such payment obligations.

Under the terms of the Loan Agreement, amounts due will be paid from the cash flows generated by the Trust Sites, which must be deposited into certain reserve accounts, and thereafter distributed, solely pursuant to the terms of the Loan Agreement. On a monthly basis, after payment of all required amounts under the Loan Agreement, including interest payments, subject to the conditions described below, the excess cash flows generated from the operation of such assets are released to the AMT Asset Subs, as applicable, which can then be distributed to, and used by, the Company.

In order to distribute any excess cash flow to the Company, the AMT Asset Subs must maintain a specified debt service coverage ratio (the “DSCR”), which is generally calculated as the ratio of the net cash flow (as defined in the applicable agreement) to the amount of interest, servicing fees and trustee fees required to be paid over the succeeding 12 months on the principal amount of the Loan that will be outstanding on the payment date following such date of determination. If the DSCR were equal to or below 1.30x (the “Cash Trap DSCR”) for any quarter, then all cash flow in excess of amounts required to make debt service payments, fund required reserves, pay management fees and budgeted operating expenses and make other payments required under the applicable transaction documents, referred to as excess cash flow, will be deposited into a reserve account (the “Cash Trap Reserve Account”) instead of being released to the AMT Asset Subs. The funds in the Cash Trap Reserve Account will not be released to the AMT Asset Subs unless the DSCR exceeds the Cash Trap DSCR for two consecutive calendar quarters.

Additionally, an “amortization period” commences if, as of the end of any calendar quarter, the DSCR is equal to or below 1.15x (the “Minimum DSCR”) and will continue to exist until the DSCR exceeds the Minimum DSCR for two consecutive calendar quarters. With respect to the Trust Securities, an “amortization period” also commences if, on the anticipated repayment date the component of the Loan corresponding to the applicable subclass of the Trust Securities has not been repaid in full, provided that such amortization period shall apply with respect to such component that has not been repaid in full. During an amortization period, all excess cash flow and any amounts then in the applicable Cash Trap Reserve Account would be applied to pay the principal of the Loan on each monthly payment date.

The Loan may be prepaid in whole or in part at any time, provided such payment is accompanied by the applicable prepayment consideration. If the prepayment occurs within (i) 36 months of the anticipated repayment date with respect to the 2018 Securities and (ii) 12 months of the anticipated repayment date for the 2023 Securities, no prepayment consideration is due.

The Loan Agreement includes operating covenants and other restrictions customary for transactions subject to rated securitizations. Among other things, the AMT Asset Subs are prohibited from incurring other indebtedness for borrowed money or further encumbering their assets subject to customary carve-outs for ordinary course trade payables and permitted encumbrances (as defined in the Loan Agreement). The organizational documents of the AMT Asset Subs contain provisions consistent with rating agency securitization criteria for special purpose entities, including the requirement that they maintain independent directors. The Loan Agreement also contains certain covenants that require the AMT Asset Subs to provide the trustee with regular financial reports and operating budgets, promptly notify such trustee of events of default and material breaches under the Loan Agreement and other agreements related to the Trust Sites and allow the trustee reasonable access to the sites, including the right to conduct site investigations.

A failure to comply with the covenants in the Loan Agreement could prevent the AMT Asset Subs from distributing excess cash flow to the Company. Furthermore, if the AMT Asset Subs were to default on the Loan, the trustee may seek to foreclose

F-32

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

upon or otherwise convert the ownership of all or any portion of the Trust Sites, in which case the Company could lose the revenue and cash flows associated with those assets.

Further, under the Loan Agreement, the AMT Asset Subs are required to maintain reserve accounts, including for ground rents, real estate and personal property taxes and insurance premiums, and, in certain circumstances under the Loan Agreement, to reserve a portion of advance rents from tenants on the Trust Sites. Based on the terms of the Loan Agreement, all rental cash receipts received for each month are reserved for the succeeding month and held in an account controlled by the applicable trustee and then released. The $69.0 million held in the reserve accounts with respect to the Trust Securitization as of December 31, 2025 is classified as Restricted cash on the Company’s accompanying consolidated balance sheets.

Other Subsidiary Debt—Each of the agreements governing the other subsidiary debt contains contractual covenants and other restrictions. Failure to comply with certain of the financial and operating covenants could constitute a default under the applicable debt agreement, which could result in, among other things, the amounts outstanding, including all accrued interest and unpaid fees, becoming immediately due and payable.

*Bangladesh Term Loan—*In March 2025, the Company entered into a 400.0 million BDT (approximately $3.3 million) term loan with a maturity date that is eight years from the date of the first draw thereunder (the “Bangladesh Term Loan”). On March 24, 2025, the Company borrowed 150.0 million BDT (approximately $1.2 million) under the Bangladesh Term Loan. The Bangladesh Term Loan bears interest at 13.50% per annum, subject to quarterly resets. Interest is payable quarterly. Any outstanding principal and accrued but unpaid interest will be due and payable in full at maturity. The Bangladesh Term Loan does not require amortization of principal and may be paid prior to maturity in whole or in part at the Company’s option without penalty or premium. As of December 31, 2025, 150.0 million BDT (approximately $1.2 million) was outstanding under the Bangladesh Term Loan.

*CoreSite DE1 Note—*On April 1, 2025, in connection with the Company’s acquisition of a multi-tenant data center facility in Denver, Colorado, in which it previously leased space (“DE1”), the Company entered into an agreement to pay $5.0 million of purchase price to the seller in monthly installments through March 31, 2028 (the “CoreSite DE1 Note”). The CoreSite DE1 Note accrues interest at the prime rate as announced by Bank of America, N.A plus 200 basis points. As of December 31, 2025, the interest rate was 9.50% per annum. Interest is payable monthly in arrears. Any outstanding principal and accrued but unpaid interest will be due and payable in full at maturity. The CoreSite DE1 Note may be paid prior to maturity in whole or in part at the Company’s option without penalty or premium, provided that if such prepayment is made prior to April 1, 2027, the Company is required to pay any additional interest which would have accrued under the CoreSite DE1 Note in the ordinary course through April 1, 2027. As of December 31, 2025, approximately $4.0 million was outstanding under the CoreSite DE1 Note.

Finance Lease Obligations—The Company’s finance lease obligations approximated $15.9 million and $16.6 million as of December 31, 2025 and 2024, respectively.

Maturities—Aggregate principal maturities of long-term debt, including finance leases, for the next five years and thereafter are expected to be:

Fiscal Year						Amount
2026						$	3,387.8
2027						4,726.7
2028						7,513.2
2029						3,782.0
2030						4,925.3
Thereafter						13,099.9
Total cash obligations						37,434.9
Unamortized discounts, premiums and debt issuance costs, net						(214.6)
Balance as of December 31, 2025						$	37,220.3

F-33

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

9. ASSET RETIREMENT OBLIGATIONS

The changes in the carrying amount of the Company’s asset retirement obligations were as follows:

			2025						2024
Beginning balance as of January 1,			$	2,393.8					$	2,080.0
Additions			12.1						15.5
Accretion expense			37.8						35.5
Revisions in estimates (1)			93.5						304.1
Settlements			(24.3)						(41.3)
Balance as of December 31,			$	2,512.9					$	2,393.8

---

(1)Revisions in estimates include an increase to the liability of $131.3 million and a decrease to the liability of $125.0 million related to foreign currency translation for the years ended December 31, 2025 and 2024, respectively. For the year ended December 31, 2024 includes a $470.0 million increase in the asset retirement obligation liability as a result of the Company’s change in the estimated settlement dates on January 1, 2024.

As of December 31, 2025, the estimated undiscounted future cash outlay for asset retirement obligations was $4.6 billion.

10. FAIR VALUE MEASUREMENTS

The Company determines the fair value of its financial instruments based on the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Below are the three levels of inputs that may be used to measure fair value:

			Level 1			Quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.
			Level 2			Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
			Level 3			Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Items Measured at Fair Value on a Recurring Basis—The fair values of the Company’s financial assets and liabilities that are required to be measured on a recurring basis at fair value were as follows:

						December 31, 2025															December 31, 2024
						Fair Value Measurements Using															Fair Value Measurements Using
						Level 1			Level 2						Level 3						Level 1			Level 2						Level 3
Assets:
Investments in equity securities (1)						$	15.3		$	161.6					—						$	98.6		$	5.3					—

---

(1) Investments in equity securities are recorded in Notes receivable and other non-current assets in the consolidated balance sheets at fair value. Unrealized holding gains and losses for equity securities are recorded in Other income (expense) in the consolidated statements of operations in the current period. During the year ended December 31, 2025, the Company recognized an unrealized gain of $121.3 million, for equity securities held as of December 31, 2025. During the year ended December 31, 2024, the Company recognized an unrealized gain of $70.4 million for equity securities held as of December 31, 2024.

Sale of Equity Securities—During the year ended December 31, 2025, the Company completed the sale of equity securities in the U.S. The net proceeds for this transaction were approximately $159.6 million after deducting commissions and fees. During the year ended December 31, 2025, the Company recognized a gain of $111.3 million for equity securities sold during the period.

Items Measured at Fair Value on a Nonrecurring Basis

Assets Held and Used—The Company’s long-lived assets are recorded at amortized cost and, if impaired, are adjusted to fair value using Level 3 inputs.

F-34

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

During the year ended December 31, 2025, long-lived assets held and used with a carrying value of $33.7 billion included assets of $0.1 billion that were subject to fair value measurement and were written down to their net realizable value of less than $0.1 billion as a result of an asset impairment charge of $94.2 million. During the year ended December 31, 2024, long-lived assets held and used with a carrying value of $32.3 billion included assets of less than $0.1 billion that were subject to fair value measurement and written down to their net realizable value of less than $0.1 billion as a result of an asset impairment charge of $68.6 million. The asset impairment charges are recorded in Other operating expenses in the accompanying consolidated statements of operations. These adjustments were determined by comparing the estimated fair value of the subject assets utilizing projected future discounted cash flows to be provided from the long-lived assets to the asset’s carrying value.

The significant unobservable inputs used to determine the fair value of the individual tower and acquired network location intangible assets subject to impairment in 2025 and 2024 included the following:

			Year Ended December 31,
			2025												2024
			Range						Weighted Average						Range						Weighted Average
Terminal growth rates on cash flows (1)			2% to 12%						3%						2% to 8%						3%
Weighted average cost of capital (2)			7% to 27%						9%						6% to 56%						10%

---

(1)On a local currency basis.

(2)Specific to the country of each impaired asset. Due to the underlying economic characteristics of the markets the Company operates in, the weighted average cost of capital may vary significantly from market to market.

The Company believes any reasonable change in the significant unobservable inputs utilized would not have a material impact on the fair value of the assets used in connection with the impairment recorded.

There were no other items measured at fair value on a nonrecurring basis during the years ended December 31, 2025 and 2024.

Fair Value of Financial Instruments—The Company’s financial instruments for which the carrying value reasonably approximates fair value at December 31, 2025 and 2024 include cash and cash equivalents, restricted cash, accounts receivable and accounts payable. The Company’s estimates of fair value of its long-term obligations, including the current portion, are based primarily upon reported market values. For long-term debt not actively traded, fair value is estimated using either indicative price quotes or a discounted cash flow analysis using rates for debt with similar terms and maturities. As of December 31, 2025, the carrying value and fair value of long-term obligations, including the current portion, were $37.2 billion and $36.1 billion, respectively, of which $32.9 billion was measured using Level 1 inputs and $3.2 billion was measured using Level 2 inputs. As of December 31, 2024, the carrying value and fair value of long-term obligations, including the current portion, and amounts presented as discontinued operations, were $36.5 billion and $34.6 billion, respectively, of which $31.3 billion was measured using Level 1 inputs and $3.3 billion was measured using Level 2 inputs.

Net Investment Hedge—On June 1, 2025, the Company designated approximately 4.7 billion EUR (approximately $5.3 billion at the designation date) of senior unsecured notes as a non-derivative net investment hedge on the Company’s net investments in its European subsidiaries (as discussed in note 1).

The following table presents the contractual amounts of the Company's outstanding instruments:

												As of
						Designation						December 31, 2025						December 31, 2024
Foreign currency-denominated debt (1)						Net Investment Hedge						$	5,461.6					$	—

---

(1)During the year ended December 31, 2025, the Company recorded $185.3 million of unrealized foreign currency losses related to the EUR denominated debt that was designated as a net investment hedge as a foreign currency translation adjustment in Accumulated other comprehensive loss. As of December 31, 2025, includes 4.7 billion EUR ($5.5 billion) of outstanding EUR denominated debt designated as hedges of a portion the Company’s net investment in foreign operations. This debt matures in fiscal years 2026 through 2034.

11. INCOME TAXES

Beginning in the taxable year ended December 31, 2012, the Company has filed, and intends to continue to file, U.S. federal income tax returns as a REIT, and its domestic TRSs filed, and intend to continue to file, separate tax returns as required. The Company also files tax returns in various states and countries. The Company’s state tax returns reflect different combinations of the Company’s subsidiaries and are dependent on the connection each subsidiary has with a particular state and form of organization. The following information refers to the Company’s income taxes on a consolidated basis.

F-35

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

The income tax provision from continuing operations consisted of the following:

			Year Ended December 31,
2025						2024						2023
Current:
Federal (1)			$	(37.6)					$	(1.1)					$	(1.0)
State			(7.1)						(8.0)						(4.9)
Foreign			(328.5)						(304.9)						(253.0)
Deferred:
Federal (1)			(24.3)						(7.6)						1.8
State			(1.7)						(1.2)						0.8
Foreign			(16.5)						(43.5)						165.5
Income tax provision			$	(415.7)					$	(366.3)					$	(90.8)

---

(1)For the year ended December 31, 2025, includes impact of gains from equity securities in the U.S.

The effective tax rate (“ETR”) on income from continuing operations for the years ended December 31, 2025, 2024 and 2023 differs from the federal statutory rate primarily due to the Company’s qualification for taxation as a REIT, as well as adjustments for state and foreign items. As a REIT, the Company may deduct earnings distributed to stockholders against the income generated by its REIT operations.

On July 4, 2025, the One Big Beautiful Bill (“OBBB Act”), which includes a broad range of tax reform provisions, was signed into law in the United States. The OBBB Act did not have a material impact on the Company’s annual effective tax rate in 2025.

For the year ended December 31, 2025, the increase in the income tax provision was primarily attributable to (i) increased earnings in certain foreign jurisdictions, (ii) taxes incurred as a result of the sale of South Africa Fiber, (iii) additions to reserves for uncertain tax positions, (iv) gains from equity securities in the U.S. and (v) the reversal of permanent reinvestment assertions in Nigeria, partially offset by a net benefit from the application of tax law changes primarily in Germany and a decrease in withholding taxes from equity distributions due in part to the ATC TIPL Transaction (as defined in note 21).

For the year ended December 31, 2024, the increase in the income tax provision was primarily attributable to increased earnings in certain foreign jurisdictions, partially due to the impacts of the change in estimated useful lives on depreciation and amortization expense in the prior year and withholding taxes on equity distributions, including those related to the ATC TIPL Transaction (as defined in note 21), and management fees from certain foreign subsidiaries. The income tax provision for the year ended December 31, 2024, included the reversal of valuation allowances of $20.5 million in foreign and domestic jurisdictions as compared to the reversal of valuation allowances of $87.2 million for the year ended December 31, 2023. The income tax provision for the year ended December 31, 2023 also included a benefit from the application of a tax law change in Kenya.

Reconciliation between the U.S. statutory rate and the effective rate from continuing operations is as follows:

			Year Ended December 31,
2025												2024												2023
			Amount						%						Amount						%						Amount						%
Statutory tax rate			$	639.3					21.0		%				$	761.2					21.0		%				$	321.1					21.0		%
State and local income tax, net of federal income tax effect (1)			8.0						0.3		%				8.9						0.2		%				4.3						0.3		%
Foreign taxes
Argentina
Foreign exchange			2.2						0.1		%				6.5						0.2		%				(23.0)						(1.5)		%
Other			(4.5)						(0.1)		%				(0.3)						(0.0)		%				14.9						1.0		%
Brazil
Withholding taxes			36.9						1.2		%				49.4						1.4		%				32.9						2.1		%
Other			35.9						1.2		%				(0.1)						(0.0)		%				13.9						0.9		%

F-36

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Germany
Change in tax law			(84.6)						(2.8)		%				—						—		%				5.6						0.4		%
Other			3.7						0.1		%				9.9						0.3		%				0.0						0.0		%
Kenya
Change in tax law			—						—		%				—						—		%				(40.9)						(2.7)		%
Other			9.4						0.3		%				3.8						0.1		%				(7.0)						(0.5)		%
Mexico
Incremental loss on sale (2)			—						—		%				—						—		%				(143.0)						(9.4)		%
Change in valuation allowance			—						—		%				—						—		%				168.9						11.0		%
Other			17.6						0.6		%				14.7						0.4		%				14.0						0.9		%
Netherlands
Foreign tax credits			(102.1)						(3.4)		%				(66.9)						(1.8)		%				(62.5)						(4.1)		%
Change in valuation allowance			61.2						2.0		%				52.7						1.5		%				31.5						2.1		%
Rate differential between local and statutory tax rates			(1.4)						(0.0)		%				(13.5)						(0.4)		%				(17.4)						(1.1)		%
Other			22.0						0.7		%				(13.0)						(0.4)		%				14.3						0.9		%
Nigeria
Change in valuation allowance			—						—		%				—						—		%				(85.6)						(5.6)		%
Other			60.4						2.0		%				20.2						0.6		%				19.4						1.3		%
Singapore
Incremental loss on sale (2)			—						—		%				(146.3)						(4.0)		%				—						—		%
Change in valuation allowance			0.1						0.0		%				146.3						4.0		%				—						—		%
Other			(0.8)						(0.0)		%				2.4						0.1		%				2.3						0.2		%
Spain
Disallowance of goodwill impairment expense			—						—		%				—						—		%				21.4						1.4		%
Other			(1.1)						(0.0)		%				(2.4)						(0.1)		%				(5.4)						(0.4)		%
Other foreign jurisdictions			58.0						1.9		%				80.0						2.2		%				41.9						2.7		%
Changes in valuation allowance			1.1						0.0		%				(15.3)						(0.4)		%				20.3						1.3		%
Nontaxable or nondeductible
Adjustment to reflect REIT status (3)			(401.0)						(13.2)		%				(579.6)						(16.1)		%				(292.9)						(19.0)		%
Change in tax status (4)			—						—		%				11.0						0.3		%				(16.3)						(1.1)		%
Other			0.5						0.0		%				6.1						0.2		%				(4.2)						(0.3)		%
Changes in unrecognized tax benefits (5)			54.9						1.8		%				30.6						0.8		%				62.3						4.1		%
Effective tax rate			$	415.7					13.7		%				$	366.3					10.1		%				$	90.8					5.9		%

---

(1)State taxes in Texas, Mississippi, Louisiana, New Hampshire, Oklahoma and Rhode Island made up the majority (greater than 50 percent) of the tax effect in this category.

(2)For the year ended December 31, 2024, Singapore includes amounts related to the sale of ATC TIPL (as defined in note 21). For the year ended December 31, 2023, Mexico includes amounts related to the sale of Mexico Fiber (as defined in note 15).

(3)As a result of the ability to utilize the dividends paid deduction to offset the Company’s REIT income and gains.

(4)As a result of a change in the election of previously designated TRSs to be included as part of the REIT.

(5)Includes both foreign and domestic unrecognized tax benefits.

F-37

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Cash paid for income taxes, net of refunds consisted of the following:

			Year Ended December 31,
2025						2024						2023
Federal (1)			$	29.2					$	1.2					$	3.1
State			8.9						4.6						5.9
Foreign			290.6						345.0						297.5
Cash paid for income taxes, net of refunds			$	328.7					$	350.8					$	306.5

---

(1)For the year ended December 31, 2025, includes taxes paid related to the sale of equity securities in the U.S.

Cash paid for income taxes, net of refunds exceeded 5 percent of total income taxes paid, net of refunds in the following jurisdictions:

			Year Ended December 31,
2025						2024						2023
Foreign
Brazil			$	63.3					$	76.8					$	82.5
Burkina Faso (1)			18.6						*						*
Ghana			26.5						*						16.0
India (2)			*						73.6						53.1
Kenya			*						*						15.5
Mexico			25.0						43.8						36.6
Nigeria			17.9						27.7						30.8
South Africa (1)			39.3						*						*
Uganda			33.2						31.3						*
Other			66.8						91.8						63.0
Total Foreign			$	290.6					$	345.0					$	297.5

---

(*) Below threshold for period presented.

(1)For the year ended December 31, 2025, includes non-recurring tax payments.

(2)For the years ended December 31, 2024 and 2023, includes ATC TIPL (as defined in note 21).

The domestic and foreign components of income from continuing operations before income taxes are as follows:

			Year Ended December 31,
2025						2024						2023
United States			$	2,141.3					$	1,745.9					$	1,371.4
Foreign			902.9						1,878.9						157.9
Total			$	3,044.2					$	3,624.8					$	1,529.3

F-38

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

The components of the net deferred tax asset and liability and related valuation allowance were as follows:

			December 31, 2025						December 31, 2024
Assets:
Operating lease liability			$	992.2					$	900.8
Net operating loss carryforwards			154.8						212.0
Accrued asset retirement obligations			264.8						245.6
Stock-based compensation			10.2						9.9
Unearned revenue			24.5						19.8
Unrealized loss on foreign currency			23.0						25.6
Other accruals, allowances and reserves			157.1						46.1
Nondeductible interest			55.1						51.6
Tax credits			379.0						311.2
Capital loss carryforwards (1)			311.7						293.1
Items not currently deductible and other			9.6						58.6
Liabilities:
Depreciation and amortization			(1,673.0)						(1,566.0)
Right-of-use asset			(994.5)						(907.0)
Deferred rent			(143.3)						(116.3)
Unremitted earnings of foreign subsidiaries			(50.6)						(11.1)
Other			(49.2)						(31.5)
Subtotal			(528.6)						(457.6)
Valuation allowance			(760.3)						(681.7)
Net deferred tax liabilities			$	(1,288.9)					$	(1,139.3)

---

(1)Includes amounts related to the sales of ATC TIPL (as defined in note 21) and Mexico Fiber (as defined in note 15).

The Company provides valuation allowances if, based on the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. Management assesses the available evidence to estimate if sufficient future taxable income will be generated to use the existing deferred tax assets. Valuation allowances may be reversed if, based on changes in facts and circumstances, the net deferred tax assets have been determined to be realizable.

At December 31, 2025 and 2024, the Company has provided a valuation allowance of $760.3 million and $681.7 million, respectively, which primarily relates to foreign items. The increase in the valuation allowance for the year ending December 31, 2025 is due to uncertainty as to the timing of, and the Company’s ability to recover, net deferred tax assets in certain foreign operations in the foreseeable future, offset by reversals and fluctuations in foreign currency exchange rates. The amount of deferred tax assets considered realizable, however, could be adjusted if objective evidence in the form of cumulative losses is no longer present and additional weight may be given to subjective evidence such as the Company’s projections for growth.

A summary of the activity in the valuation allowance is as follows:

						2025						2024						2023
Balance as of January 1,						$	681.7					$	433.5					$	335.7
Additions (1)						61.9						305.6						249.1
Usage, expiration and reversals						(4.7)						(20.5)						(87.2)
Foreign currency translation						21.4						(36.9)						(64.1)
Balance as of December 31,						$	760.3					$	681.7					$	433.5

---

(1)Includes net charges to expense and allowances established due to acquisition and divestitures.

The recoverability of the Company’s deferred tax assets has been assessed utilizing projections based on its current operations. Accordingly, the recoverability of the deferred tax assets is not dependent on material asset sales or other non-routine

F-39

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

transactions. Based on its current outlook of future taxable income during the carryforward period, the Company believes that deferred tax assets, other than those for which a valuation allowance has been recorded, will be realized.

The Company intends to reinvest foreign earnings indefinitely outside of the U.S., except for earnings in certain entities in Argentina, Brazil, Burkina Faso, Costa Rica, Jersey, Mexico, Netherlands, Nigeria, Paraguay, Singapore, South Africa, Spain, Uganda and the United Kingdom. Any tax consequences for future distributions from the entities that are not indefinitely reinvested have been recorded as deferred tax liabilities. It is not practicable to determine the amount of unrecognized deferred tax liability for outside basis differences in indefinitely reinvested entities.

At December 31, 2025, the Company had net federal, state and foreign operating loss carryforwards available to reduce future taxable income. If not utilized, the Company’s NOLs expire as follows:

Years ended December 31,			Federal						State						Foreign
2026 to 2030			$	0.0					$	136.8					$	138.4
2031 to 2035			5.1						33.5						4.6
2036 to 2040			60.9						197.6						0.0
2041 to 2045			—						66.9						3.0
Indefinite carryforward			335.5						82.1						383.0
Total			$	401.5					$	516.9					$	529.0

As of December 31, 2025 and 2024, the total amount of unrecognized tax benefits that would impact the ETR, if recognized, is $128.6 million and $101.3 million, respectively. The amount of unrecognized tax benefits for the year ended December 31, 2025 includes additions to the Company’s existing tax positions of $44.9 million.

A reconciliation of the beginning and ending amount of unrecognized tax benefits are as follows:

			Year Ended December 31,
2025						2024						2023
Balance at January 1			$	101.3					$	116.9					$	78.1
Additions based on tax positions related to the current year			24.1						3.4						42.4
Additions and reductions for tax positions of prior years			22.9						6.9						0.5
Foreign currency			10.2						(14.4)						3.9
Reduction as a result of the lapse of statute of limitations			(13.7)						(2.3)						(2.1)
Reduction as a result of effective settlements			(16.2)						(9.2)						(5.9)
Balance at December 31			$	128.6					$	101.3					$	116.9

During the year ended December 31, 2025, the statute of limitations on certain unrecognized tax benefits lapsed and certain positions were effectively settled, including effective settlements and revisions of prior year positions, which resulted in a decrease of $27.8 million in the liability for unrecognized tax benefits. During the year ended December 31, 2024, the statute of limitations on certain unrecognized tax benefits lapsed and certain positions were effectively settled, including effective settlements and revisions of prior year positions, which resulted in a decrease of $12.8 million in the liability for unrecognized tax benefits. During the year ended December 31, 2023, the statute of limitations on certain unrecognized tax benefits lapsed and certain positions were effectively settled, including effective settlements and revisions of prior year positions, which resulted in a decrease of $15.5 million in the liability for unrecognized tax benefits.

The Company recorded penalties and tax-related interest expense to the tax provision of $29.3 million, $28.6 million and $21.8 million for the years ended December 31, 2025, 2024 and 2023, respectively. During the years ended December 31, 2025, 2024 and 2023, the Company reduced its liability for penalties and income tax-related interest expense related to uncertain tax positions by $8.3 million, $10.4 million and $9.7 million, respectively, due to the expiration of the statute of limitations in certain jurisdictions and certain positions that were effectively settled.

As of December 31, 2025 and 2024, the total amount of accrued income tax-related interest and penalties included in the consolidated balance sheets were $86.8 million and $58.5 million, respectively.

The Company has filed for prior taxable years, and for its taxable year ended December 31, 2025 will file, numerous consolidated and separate income tax returns, including U.S. federal and state tax returns and foreign tax returns. The Company is subject to examination in the United States and various state and foreign jurisdictions for certain tax years. As a result of the

F-40

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Company’s ability to carryforward federal, state and foreign NOLs, the applicable tax years generally remain open to examination several years after the applicable loss carryforwards have been used or have expired. The Company regularly assesses the likelihood of additional assessments in each of the tax jurisdictions resulting from these examinations.

12. STOCK-BASED COMPENSATION

Summary of Stock-Based Compensation Plans—The Company maintains equity incentive plans that provide for the grant of stock-based awards to its directors, officers and employees. The Company’s 2007 Equity Incentive Plan, as amended (the “2007 Plan”), provides for the grant of non-qualified and incentive stock options, as well as restricted stock units, restricted stock and other stock-based awards. Exercise prices for non-qualified and incentive stock options are not less than the fair value of the underlying common stock on the date of grant. Equity awards typically vest ratably. Awards granted prior to March 10, 2023 generally vest over four years for RSUs and stock options. In December 2022, the Compensation Committee changed the terms of its awards to generally vest over three years. The change in vesting terms is applicable for new awards granted beginning on March 10, 2023 and does not change the vesting terms applicable to grants awarded prior to March 10, 2023. PSUs generally vest over three years. Stock options generally expire ten years from the date of grant. As of December 31, 2025, the Company had the ability to grant stock-based awards with respect to an aggregate of 2.7 million shares of common stock under the 2007 Plan. In addition, the Company maintains an employee stock purchase plan (the “ESPP”) pursuant to which eligible employees may purchase shares of the Company’s common stock on the last day of each bi-annual offering period at a 15% discount from the lower of the closing market value on the first or last day of such offering period. The offering periods run from June 1 through November 30 and from December 1 through May 31 of each year.

During the years ended December 31, 2025, 2024 and 2023, the Company recorded the following stock-based compensation expenses in selling, general, administrative and development expense:

			2025 (2)						2024 (2)						2023 (3)
Stock-based compensation expense (1)			$	174.2					$	192.7					$	183.3

---

(1)For the year ended December 31, 2025, includes the reversal of $7.1 million of previously recognized stock-based compensation expense associated with awards forfeited in connection with the departure of the Company’s former Executive Vice President and President, APAC due to such role being eliminated. For the years ended December 31, 2024 and 2023, excludes $10.9 million and $12.4 million, respectively, of stock-based compensation expense related to ATC TIPL (as defined in note 21), which is included in Loss from discontinued operations, net of taxes in the accompanying consolidated statements of operations.

(2)For the years ended December 31, 2025 and 2024, includes $4.7 million and $11.5 million, respectively, of accelerated stock-based compensation expense related to unvested and outstanding awards for certain former employees that vested upon termination in accordance with the Company’s severance plan.

(3)For the year ended December 31, 2023, excludes $7.6 million of stock-based compensation expense related to severance incurred as part of the Company’s restructuring plan as discussed in note 15 recorded in Other operating expense in the accompanying consolidated statements of operations.

Stock Options—There were no options granted during the years ended December 31, 2025, 2024 and 2023. The fair values of previously granted stock options were estimated on the date of grant using the Black-Scholes option pricing model based on the assumptions at the date of grant.

The intrinsic value of stock options exercised during the years ended December 31, 2025, 2024 and 2023 was $31.0 million, $43.3 million and $9.3 million, respectively. As of December 31, 2025, there was no unrecognized compensation expense related to unvested stock options. The amount of cash received from the exercise of stock options was $26.8 million during the year ended December 31, 2025.

F-41

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

The Company’s option activity for the year ended December 31, 2025 was as follows (share and per share data disclosed in full amounts):

						Options						Weighted Average Exercise Price Per Share						Weighted Average Remaining Life (Years)						Aggregate Intrinsic Value
Outstanding as of January 1, 2025						416,672						$	94.79
Granted						—						—
Exercised						(283,049)						94.77
Forfeited						—						—
Expired						—						—
Outstanding as of December 31, 2025						133,623						$	94.82					0.2						$	10.8
Exercisable as of December 31, 2025						133,623						$	94.82					0.2						$	10.8
Vested as of December 31, 2025						133,623						$	94.82					0.2						$	10.8

The following table sets forth information regarding options outstanding at December 31, 2025 (share and per share data disclosed in full amounts):

Options Outstanding																								Options Exercisable
Range of Exercise Price Per Share						Outstanding Number of Options						Weighted Average Exercise Price Per Share						Weighted Average Remaining Life (Years)						Options Exercisable						Weighted Average Exercise Price Per Share
$94.71 - $106.15						133,623						$	94.82					0.2						133,623						$	94.82
$94.71 - $106.15						133,623						$	94.82					0.2						133,623						$	94.82

Restricted Stock Units and Performance-Based Restricted Stock Units—The Company’s RSU and PSU activity for the year ended December 31, 2025 was as follows (share and per share data disclosed in full amounts):

			RSUs						Weighted Average Grant Date Fair Value						PSUs						Weighted Average Grant Date Fair Value
Outstanding as of January 1, 2025 (1)			1,460,702						$	208.09					339,268						$	212.03
Granted (2)			625,616						212.46						148,305						212.40
Vested and Released (3)			(740,247)						208.27						(133,034)						232.80
Forfeited (4)			(62,402)						211.29						(21,138)						199.61
Outstanding as of December 31, 2025			1,283,669						$	209.96					333,401						$	204.70
Expected to vest as of December 31, 2025			1,283,669						$	209.96					333,401						$	204.70
Vested and deferred as of December 31, 2025 (5)			21,664						$	208.04					—						$	—

---

(1)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the 2024 PSUs and the 2023 PSUs (each as defined below), or 87,550 shares and 118,684 shares, respectively, the shares issuable at the end of the three-year performance period for the PSUs granted in 2022 (the “2022 PSUs”) based on achievement against the performance metrics for the three-year performance period, or 133,034 shares.

(2)PSUs consist of the target number of shares issuable at the end of the three-year performance period for the 2025 PSUs (as defined below), or 86,911 shares. PSUs also include the shares above target that are issuable for the 2023 PSUs at the end of the three-year performance cycle based on exceeding the performance metric for the three-year performance period, or 61,394 shares.

(3)PSUs consist of shares vested pursuant to the 2022 PSUs. There are no additional shares to be earned related to the 2022 PSUs.

(4)PSUs consist of shares forfeited in connection with the departure of the Company’s former Executive Vice President and President, APAC due to such role being eliminated, which includes the target number of shares issuable at the end of the three-year performance period for the 2024 PSUs and the 2023 PSUs pursuant to the terms of the award agreements.

(5)Vested and deferred RSUs are related to deferred compensation for certain former employees.

The total fair value of RSUs and PSUs that vested during the year ended December 31, 2025 was $183.6 million.

*Restricted Stock Units—*As of December 31, 2025, total unrecognized compensation expense related to unvested RSUs granted under the 2007 Plan was $106.7 million and is expected to be recognized over a weighted average period of approximately one year. Vesting of RSUs is subject generally to the employee’s continued employment or death, disability or qualified retirement (each as defined in the applicable RSU award agreement). RSUs will accrue dividend equivalents prior to vesting, which will be paid out only in respect of shares that actually vest.

F-42

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

*Performance-Based Restricted Stock Units—*During the year ended December 31, 2025, the Compensation Committee granted an aggregate of 86,911 PSUs (the “2025 PSUs”) to its executive officers and established the performance and market metrics for these awards. During the years ended December 31, 2024 and 2023, the Compensation Committee granted an aggregate of 87,550 PSUs (the “2024 PSUs”) and 118,684 PSUs (the “2023 PSUs”), respectively, to its executive officers and established the performance metrics for these awards.

Threshold, target and maximum parameters were established for the metrics for a three-year performance period with respect to each of the 2025 PSUs, the 2024 PSUs and the 2023 PSUs and will be used to calculate the number of shares that will be issuable when each award vests, which may range from zero to 200% of the target amounts. At the end of each three-year performance period, the number of shares that vest will depend on the degree of achievement against the pre-established goals. PSUs will be paid out in common stock at the end of each performance period, subject generally to the executive’s continued employment or death, disability or qualified retirement (each as defined in the applicable PSU award agreement). PSUs will accrue dividend equivalents prior to vesting, which will be paid out only in respect of shares that actually vest.

Certain of the 2025 PSUs and the 2024 PSUs include a market condition component based on relative total shareholder return as measured against the REIT constituents included in the S&P 500 Index. For the component of the 2025 PSUs and the 2024 PSUs subject to a market condition, fair value is determined using a Monte Carlo simulation model, which uses multiple input variables to determine the probability of satisfying the market condition requirements. The grant date fair value of the market condition component of the 2025 PSUs and the 2024 PSUs is $286.21 and $216.11, respectively.

Key assumptions used to apply this pricing model were as follows:

			2025						2024
Expected term (years)			2.81						2.81
Risk-free interest rate			3.91		%				4.31		%
Annualized volatility			27.91		%				26.75		%

During the year ended December 31, 2025, the Company’s Executive Vice President and President, APAC departed the Company due to such role being eliminated. As the conditions for vesting pursuant to the terms of the award agreements for such executive’s 2024 PSUs and 2023 PSUs were not met, the awards were forfeited. Accordingly, the Company reversed $5.3 million of previously recognized stock-based compensation expense associated with these awards.

During the year ended December 31, 2025, the Company recorded $23.9 million in stock-based compensation expense for equity awards in which the performance goals have been established and were probable of being achieved. The remaining unrecognized compensation expense related to these awards at December 31, 2025 was $1.3 million based on the Company’s current assessment of the probability of achieving the performance goals. The weighted-average period over which the cost will be recognized is approximately one year.

ATC TIPL Transaction—Upon completion of the ATC TIPL Transaction (as defined in note 21), RSUs granted to certain employees in India that were unvested and outstanding immediately vested. The Company recognized $5.3 million of accelerated stock-based compensation expense for these awards during the year ended December 31, 2024, which is included in Loss from discontinued operations, net of taxes.

13. EQUITY

Dividends—The Company may pay dividends in cash or, subject to certain limitations, in shares of common stock or any combination of cash and shares of common stock.

Sales of Equity Securities—The Company receives proceeds from sales of its equity securities pursuant to the ESPP and upon exercise of stock options granted under the 2007 Plan. During the year ended December 31, 2025, the Company received an aggregate of $41.7 million in proceeds upon exercises of stock options and sales pursuant to the ESPP.

Stock Repurchase Programs—In March 2011, the Company’s Board of Directors approved a stock repurchase program, pursuant to which the Company is authorized to repurchase up to $1.5 billion of its common stock (the “2011 Buyback”). In December 2017, the Board of Directors approved an additional stock repurchase program, pursuant to which the Company is authorized to repurchase up to $2.0 billion of its common stock (the “2017 Buyback”).

During the year ended December 31, 2025, the Company repurchased 2,036,100 shares of its common stock for an aggregate of $364.6 million, including commissions and fees, under both the 2011 Buyback and the 2017 Buyback. As of December 31,

F-43

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

2025, the Company has no amounts remaining under the 2011 Buyback. As of December 31, 2025, the Company has repurchased a total of 1,941,312 shares of its common stock under the 2017 Buyback for an aggregate of $347.0 million, including commissions and fees.

Under the 2017 Buyback, the Company is authorized to purchase shares from time to time through open market purchases or in privately negotiated transactions not to exceed market prices and subject to market conditions and other factors. With respect to open market purchases, the Company may use plans adopted in accordance with Rule 10b5-1 under the Exchange Act in accordance with securities laws and other legal requirements, which allows the Company to repurchase shares during periods when it may otherwise be prevented from doing so under insider trading laws or because of self-imposed trading blackout periods.

The Company expects to fund any further repurchases of its common stock through a combination of cash on hand, cash generated by operations and borrowings under its credit facilities. Repurchases under the Buyback Programs are subject to, among other things, the Company having available cash to fund the repurchases.

Distributions—During the years ended December 31, 2025, 2024 and 2023, the Company declared the following cash distributions (per share data reflects actual amounts):

						For the year ended December 31,
						2025												2024												2023
						Distribution per share						Aggregate Payment Amount						Distribution per share						Aggregate Payment Amount						Distribution per share						Aggregate Payment Amount
Common Stock						$	6.80					$	3,180.8					$	6.48					$	3,027.3					$	6.45					$	3,006.7

The following table characterizes the tax treatment of distributions declared per share of common stock.

						For the year ended December 31,
						2025												2024												2023
						Per Share						%						Per Share						%						Per Share						%
Common Stock
			Ordinary dividend			$	6.7200					100.00		%				$	6.5600					100.00		%				$	6.3100					100.00		%
			Capital gains distribution			—						—						—						—						—						—
			Total			$	6.7200		(1)			100.00		%				$	6.5600		(2)			100.00		%				$	6.3100		(3)			100.00		%

---

(1) Excludes dividend declared on December 4, 2025 of $1.70 per share, which was paid on February 2, 2026 to common stockholders of record at the close of business on December 29, 2025 and which will apply to the 2026 tax year. Includes dividend declared on December 5, 2024 of $1.62 per share, which was paid on February 3, 2025 to common stockholders of record at the close of business on December 27, 2024 and which applied to the 2025 tax year.

(2) Excludes dividend declared on December 5, 2024 of $1.62 per share, which was paid on February 3, 2025 to common stockholders of record at the close of business on December 27, 2024 and which applied to the 2025 tax year. Includes dividend declared on December 13, 2023 of $1.70 per share, which was paid on February 1, 2024 to common stockholders of record at the close of business on December 28, 2023 and which applied to the 2024 tax year.

(3) Excludes dividend declared on December 13, 2023 of $1.70 per share, which was paid on February 1, 2024 to common stockholders of record at the close of business on December 28, 2023 and which applied to the 2024 tax year. Includes dividend declared on December 7, 2022 of $1.56 per share, which was paid on February 2, 2023 to common stockholders of record at the close of business on December 28, 2022 and which applied to the 2023 tax year.

The Company accrues distributions on unvested restricted stock units, which are payable upon vesting. The amount accrued for distributions payable related to unvested restricted stock units was $20.8 million and $22.5 million as of December 31, 2025 and 2024, respectively. During the year ended December 31, 2025, the Company paid $12.2 million of distributions upon the vesting of restricted stock units. To maintain its qualification for taxation as a REIT, the Company expects to continue paying distributions, the amount, timing and frequency of which will be determined, and subject to adjustment, by the Company’s Board of Directors.

14. NONCONTROLLING INTERESTS

*European Interests—*As of December 31, 2025, ATC Europe consists of the Company’s operations in France, Germany and Spain. The Company currently holds a 52% controlling interest in ATC Europe, with Caisse de dépôt et placement du Québec (“La Caisse”) and Allianz insurance companies and funds managed by Allianz Capital Partners GmbH, including the Allianz European Infrastructure Fund (collectively, “Allianz”) holding 30% and 18% noncontrolling interests, respectively. ATC Europe holds a 100% interest in the subsidiaries that consist of the Company’s operations in France and an 87% and an 83%

F-44

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

controlling interest in the subsidiaries that consist of the Company’s operations in Germany and Spain, respectively, with PGGM holding a 13% and a 17% noncontrolling interest in each respective subsidiary.

Bangladesh Partnership—In August 2021, the Company acquired a 51% controlling interest in Kirtonkhola Tower Bangladesh Limited (“KTBL”). Confidence Group holds a 49% noncontrolling interest in KTBL.

Stonepeak Transaction—In 2022, the Company entered into agreements pursuant to which certain investment vehicles affiliated with Stonepeak Partners LP (such investment vehicles, collectively, “Stonepeak”) acquired a noncontrolling ownership interest in the Company’s U.S. data center business, through an investment in common equity and mandatorily convertible preferred equity.

As of December 31, 2025, the Company holds a common equity interest of approximately 71% in its U.S. data center business, with Stonepeak holding approximately 29% of the outstanding common equity and 100% of the outstanding mandatorily convertible preferred equity. On a fully converted basis, which is expected to occur four years from August 2022, and on the basis of the currently outstanding equity, the Company will hold a controlling ownership interest of approximately 64%, with Stonepeak holding approximately 36%. The mandatorily convertible preferred equity, which accrues dividends at 5.0%, will convert into common equity on a one for one basis, subject to adjustment that will be measured upon conversion.

*Dividends to noncontrolling interests—*Certain of the Company’s subsidiaries may, from time to time, declare dividends.

During the year ended December 31, 2025, the Company’s U.S. data center business declared distributions of $46.1 million related to the outstanding Stonepeak mandatorily convertible preferred equity (the “Stonepeak Preferred Distributions”). As of December 31, 2025, the amount accrued for Stonepeak Preferred Distributions was $11.6 million.

Beginning in January 2024, pursuant to the terms of the ownership agreement with Stonepeak, on a quarterly basis, the Company’s U.S. data center business will distribute common dividends to the Company and to Stonepeak in proportion to their respective equity interests in the Company’s U.S. data center business (the “Stonepeak Common Dividend”). During the year ended December 31, 2025, the Company’s U.S. data center business made distributions of $69.6 million related to the Stonepeak Common Dividend.

During the year ended December 31, 2025, pursuant to the terms of the ownership agreements, ATC Europe C.V., one of the Company’s subsidiaries in the Netherlands, declared and paid aggregate dividends of 248.9 million EUR (approximately $291.2 million at the dates of payment) to the Company, La Caisse and Allianz in proportion to their respective equity interests in ATC Europe C.V.

During the year ended December 31, 2025, pursuant to the terms of the ownership agreements, AT Iberia C.V., one of the Company’s subsidiaries in Spain, declared and paid aggregate dividends of 87.3 million EUR (approximately $101.1 million at the dates of payment) to ATC Europe and PGGM in proportion to their respective equity interests in AT Iberia C.V.

The changes in noncontrolling interests were as follows:

						Year Ended December 31,
						2025						2024
Balance as of January 1,						$	6,266.5					$	6,667.2
Net income attributable to noncontrolling interests						99.0						25.2
Foreign currency translation adjustment attributable to noncontrolling interests, net of tax						460.0						(234.1)
Contributions from noncontrolling interest holders (1)						148.1						154.6
Distributions to noncontrolling interest holders						(270.8)						(346.4)
Balance as of December 31,						$	6,702.8					$	6,266.5

---

(1) For the year ended December 31, 2025 primarily includes contributions from Stonepeak. For the year ended December 31, 2024 includes contributions from Stonepeak of $137.3 million, including a noncash contribution of $37.5 million made in lieu of Stonepeak’s receipt of the Stonepeak Common Dividend and a noncash contribution from PGGM of $12.4 million made in lieu of PGGM’s receipt of a distribution.

15. OTHER OPERATING EXPENSE

Other operating expense consists primarily of impairment charges, net losses on sales or disposals of assets and other operating expense items. The Company records impairment charges to write down certain assets to their net realizable value after an indicator of impairment is identified and subsequent analysis determines that the asset is either partially recoverable or not recoverable. These assets consist primarily of those related to the Company’s tower locations, and included towers and related

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AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

assets included in property and equipment, network location intangible assets and right-of-use assets, all of which are typically assessed on an individual location or site basis. The assets subject to impairment also include tenant-related intangibles, which are assessed on a tenant basis. Net losses on sales or disposals of assets primarily relate to certain non-core towers, other assets and miscellaneous items. Other operating expenses includes acquisition- and disposition-related costs and integration costs.

Other operating expenses included the following for the years ended December 31,:

			2025						2024						2023
Impairment charges			$	100.7					$	68.6					$	200.0
Net (gains) losses on sales or disposals of assets (1)			(17.3)						17.9						131.3
Other operating (income) expense (2)			(15.0)						(12.4)						39.4
Total Other operating expenses			$	68.4					$	74.1					$	370.7

---

(1) For the year ended December 31, 2025, includes a gain on the sale of South Africa Fiber of $53.6 million. For the year ended December 31, 2024, includes a gain on the sales of our subsidiaries in Australia (“ATC Australia”) and New Zealand (“ATC New Zealand”) of $8.5 million. For the year ended December 31, 2023, includes a net loss of $78.9 million on the sales of one of our subsidiaries in Mexico that held fiber assets (‘Mexico Fiber”) and the sale of our subsidiary in Poland (“ATC Poland”).

(2) During the years ended December 31, 2025, 2024 and 2023, the Company recorded net benefits of $14.7 million, $23.4 million and $10.3 million related to pre-acquisition contingencies and settlements, respectively. For the year ended December 31, 2023, includes severance and related costs as discussed below.

Impairment charges included the following for the years ended December 31,:

			2025						2024						2023
Tower and network location intangible assets			$	75.6					$	46.3					$	93.7
Tenant relationships (1)			—						13.5						90.2
Other (2)			25.1						8.8						16.1
Total impairment charges included in Other operating expense			$	100.7					$	68.6					$	200.0
Spain goodwill impairment			$	—					$	—					$	80.0
Total impairment charges			$	100.7					$	68.6					$	280.0

---

(1) During the year ended December 31, 2023, impairment charges related to impaired tenant relationships in Africa.

(2) Includes impairment charges related to right-of-use assets. During the year ended December 31, 2025, includes $6.5 million of goodwill impairment associated with the Bangladesh reporting unit (as discussed in note 5).

Spain Goodwill Impairment

For the year ended December 31, 2023, the results of the annual goodwill impairment test indicated that the carrying amount of the Company’s Spain reporting unit exceeded its estimated fair value, as calculated under an income approach using future discounted cash flows. As a result, the Company recorded a goodwill impairment charge of $80.0 million. The key assumptions utilized in the discounted cash flow analysis included current operating performance, terminal revenue growth rate, management’s expectations of future operating results and cash requirements, the current weighted average cost of capital and an expected tax rate. The reduction in the fair value of the Spain reporting unit was primarily due to an increase in the weighted average cost of capital. The goodwill impairment charge is recorded in Goodwill impairment in the consolidated statements of operations for the year ended December 31, 2023.

Severance

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AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

During the year ended December 31, 2023, the Company approved a plan for restructuring its workforce, which was communicated to its employees. As a result of these actions, severance and related costs of $21.8 million were recorded in Other operating expense in the accompanying consolidated statements of operations for the year ended December 31, 2023.

Additional information relating to the severance and related costs by operating segments is as follows for the year ended December 31,:

			2023
U.S. & Canada property			$	2.4
Africa property			0.7
Europe property			2.8
Latin America property			4.7
Services			3.4
Other (1)			7.8
Total severance and related costs			$	21.8

---

(1)Includes corporate expenses.

16. EARNINGS PER COMMON SHARE

The following table sets forth basic and diluted net income per common share computational data for the years ended December 31, (shares in thousands, except per share data):

			2025						2024						2023
Net income from continuing operations attributable to American Tower common stockholders			$	2,529.5					$	3,233.3					$	1,554.7
Net loss from discontinued operations attributable to American Tower common stockholders			—						(978.3)						(71.4)
Net income attributable to American Tower Corporation common stockholders			$	2,529.5					$	2,255.0					$	1,483.3
Basic weighted average common shares outstanding			467,922						467,011						466,063
Dilutive securities			835						1,109						1,099
Diluted weighted average common shares outstanding			468,757						468,120						467,162
Basic net income from continuing operations attributable to American Tower Corporation common stockholders			$	5.41					$	6.92					$	3.34
Basic net loss from discontinued operations attributable to American Tower Corporation common stockholders per common share			—						(2.09)						(0.15)
Basic net income attributable to American Tower Corporation common stockholders per common share			$	5.41					$	4.83					$	3.18
Diluted net income from continuing operations attributable to American Tower Corporation common stockholders			$	5.40					$	6.91					$	3.33
Diluted net loss from discontinued operations attributable to American Tower Corporation common stockholders			—						(2.09)						(0.15)
Diluted net income attributable to American Tower Corporation common stockholders per common share			$	5.40					$	4.82					$	3.18

Shares Excluded From Dilutive Effect

The following shares were not included in the computation of diluted earnings per share because the effect would be anti-dilutive for the years ended December 31, (in thousands, on a weighted average basis):

			2025						2024						2023
Restricted stock awards			1						2						5

17. COMMITMENTS AND CONTINGENCIES

Litigation—The Company periodically becomes involved in various claims and lawsuits that are incidental to its business. While the Company’s management, after consultation with counsel, currently believes the ultimate outcome of these legal

F-47

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

proceedings, individually and in the aggregate, will not have a material adverse impact on its consolidated financial position, results of operations or liquidity, litigation is subject to inherent uncertainties. Were an unfavorable ruling to occur, there exists the possibility of a material adverse impact on the Company’s financial condition and results of operations.

Verizon Transaction—In March 2015, the Company entered into an agreement with various operating entities of Verizon Communications Inc. (“Verizon”) that currently provides for the lease, sublease or management of approximately 11,100 wireless communications sites, which commenced on March 27, 2015. The average term of the lease or sublease for all communications sites at the inception of the agreement was approximately 28 years, assuming renewals or extensions of the underlying ground leases for the sites. The Company has the option to purchase the leased sites in tranches, subject to the applicable lease, sublease or management rights upon its scheduled expiration. Each tower is assigned to an annual tranche, ranging from 2034 to 2047, which represents the outside expiration date for the sublease rights to the towers in that tranche. The purchase price for each tranche is a fixed amount stated in the lease for such tranche plus the fair market value of certain alterations made to the related towers. The aggregate purchase option price for the towers leased and subleased is approximately $5.0 billion. Verizon occupied the sites as a tenant for an initial term of ten years and has exercised its first renewal option for a five-year term. Verizon has seven optional successive five-year terms remaining; each such term shall be governed by standard master lease agreement terms established as a part of the transaction.

AT&T Transaction—The Company has an agreement with SBC Communications Inc., a predecessor entity to AT&T Inc. (“AT&T”), that currently provides for the lease or sublease of approximately 1,600 towers, which commenced between December 2000 and August 2004. Substantially all of the towers are part of the Trust Securitization. The average term of the lease or sublease for all sites at the inception of the agreement was approximately 27 years, assuming renewals or extensions of the underlying ground leases for the sites. The Company has the option to purchase the sites subject to the applicable lease or sublease upon its expiration. Each tower is assigned to an annual tranche, ranging from 2013 to 2032, which represents the outside expiration date for the sublease rights to that tower. The purchase price for each site is a fixed amount stated in the lease for that site plus the fair market value of certain alterations made to the related tower by AT&T. As of December 31, 2025, the Company has purchased an aggregate of approximately 800 of the subleased towers which are subject to the applicable agreement, including 104 towers purchased during the year ended December 31, 2025 for an aggregate purchase price of $82.0 million. The aggregate purchase option price for the remaining towers leased and subleased is $1.2 billion and includes per annum accretion through the applicable expiration of the lease or sublease of a site. For the applicable sites, AT&T has the right to continue to lease space subject to a monthly fee, which shall escalate in accordance with the standard master lease agreement for the remainder of AT&T’s tenancy. AT&T shall have the right to renew each lease for up to five successive five-year terms.

Other Contingencies—The Company is subject to income tax and other taxes in the geographic areas where it holds assets or operates, and periodically receives notifications of audits, assessments or other actions by taxing authorities. Taxing authorities may issue notices or assessments while audits are being conducted. In certain jurisdictions, taxing authorities may issue assessments with minimal examination. These notices and assessments do not represent amounts that the Company is obligated to pay and are often not reflective of the actual tax liability for which the Company will ultimately be liable. In the process of responding to assessments of taxes that the Company believes are not enforceable, the Company avails itself of both administrative and judicial remedies. The Company evaluates the circumstances of each notification or assessment based on the information available and, in those instances in which the Company does not anticipate a successful defense of positions taken in its tax filings, a liability is recorded in the appropriate amount based on the underlying assessment.

Guaranties and Indemnifications—The Company enters into agreements from time to time in the ordinary course of business pursuant to which it agrees to guarantee or indemnify third parties for certain claims. The Company has also entered into purchase and sale or disposal agreements relating to the sale or acquisition of assets containing customary indemnification provisions. The Company’s indemnification obligations under these agreements generally are limited solely to damages resulting from breaches of representations and warranties or covenants under the applicable agreements. In addition, payments under such indemnification clauses are generally conditioned on the other party making a claim that is subject to whatever defenses the Company may have and are governed by dispute resolution procedures specified in the particular agreement. Further, the Company’s obligations under these agreements may be limited in duration and amount, and in some instances, the Company may have recourse against third parties for payments made by the Company. The Company has not historically made any material payments under these agreements and, as of December 31, 2025, is not aware of any agreements that could result in a material payment.

F-48

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

18. SUPPLEMENTAL CASH FLOW INFORMATION

Supplemental cash flow information and non-cash investing and financing activities are as follows for the years ended December 31,:

			2025						2024						2023
Supplemental cash flow information:
Cash paid for interest			$	1,287.4					$	1,424.3					$	1,260.0
Cash paid for income taxes (net of refunds of $26.5, $31.8 and $31.5, respectively)			328.7						350.8						306.5
Non-cash investing and financing activities:
Increase (decrease) in accounts payable and accrued expenses for purchases of property and equipment and construction activities			12.7						(2.9)						(14.7)
Purchases of property and equipment under finance leases, perpetual easements and capital leases			28.9						21.7						31.5
Seller financed acquisition			5.0						—						—
Distributions to noncontrolling interest holders			—						(49.9)						—
Contributions from noncontrolling interest holders			—						49.9						—
Contribution to equity method investment			—						14.6						—
Transfer of tower sites (1)			—						35.8						—

---

(1)The Company received 575 tower sites from a customer in Brazil in exchange for settling certain future contractual obligations owed to the Company in accordance with the customer’s judicial recovery plan.

19. BUSINESS SEGMENTS

Property

Communications Sites and Related Communications Infrastructure—The Company’s primary business is leasing space on multitenant communications sites to wireless service providers, radio and television broadcast companies, wireless data providers, government agencies and municipalities and tenants in a number of other industries. The Company has historically reported these operations on a geographic basis.

Data Centers— The Company operates 30 data center facilities across eleven markets in the United States. The Company’s Data Centers segment relates to data center facilities and related assets that the Company owns and operates in the United States. The Data Centers segment offers different types of leased land, infrastructure and related services from, and requires different resources, skill sets and marketing strategies than the existing property operating segment in the U.S. & Canada.

As of December 31, 2025, the Company’s property operations consisted of the following:

• U.S. & Canada: property operations in Canada and the United States;

*•*Africa & APAC: property operations in Bangladesh, Burkina Faso, Ghana, Kenya, Niger, Nigeria, the Philippines, South Africa and Uganda;

• Europe: property operations in France, Germany and Spain;

• Latin America: property operations in Argentina, Brazil, Chile, Colombia, Costa Rica, Mexico, Paraguay and Peru; and

• Data Centers: data center property operations in the United States.

Services—The Company’s Services segment offers tower-related services in the United States, including AZP, structural and mount analyses, and construction management services, together with program management offerings that support customer deployment needs from project scoping through construction. The Company’s services operations primarily support its site leasing business, including the addition of new tenants and equipment on its communications sites. The Services segment is a strategic business unit that offers different services from, and requires different resources, skill sets and marketing strategies than, the property operating segments.

The accounting policies applied in compiling segment information below are similar to those described in note 1. Among other factors, in evaluating financial performance in each business segment, management uses segment gross margin and segment operating profit. The Company defines segment gross margin as segment revenue less segment operating expenses excluding Depreciation, amortization and accretion; Selling, general, administrative and development expense; and Other operating

F-49

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

expenses. The Company defines segment operating profit as segment gross margin less Selling, general, administrative and development expense attributable to the segment, excluding stock-based compensation expense and corporate expenses. These measures of segment gross margin and segment operating profit are also before Interest income, Interest expense, Gain (loss) on retirement of long-term obligations, Other income (expense), Net income (loss) attributable to noncontrolling interests and Income tax benefit (provision). The categories of expenses indicated above, such as depreciation, have been excluded from segment operating performance as they are not considered in the review of information or the evaluation of results by management. The Company’s definition of segment operating profit aligns with the Company’s definition of Adjusted EBITDA. Adjusted EBITDA is widely used in the telecommunications real estate sector to measure operating performance as depreciation, amortization and accretion may vary significantly among companies depending upon accounting methods and useful lives, particularly where acquisitions and non-operating factors are involved.

The Company’s chief operating decision maker (the “CODM”) is the Company’s chief executive officer. The CODM uses segment gross margin and segment operating profit to evaluate the segments’ operating performance, in making capital allocation decisions, and in establishing management’s compensation. Additionally, the CODM uses these metrics to monitor budget versus actual results. There are no significant revenues resulting from transactions between the Company’s operating segments. All intercompany transactions are eliminated to reconcile segment results and assets to the consolidated statements of operations and consolidated balance sheets.

Summarized financial information concerning the Company’s reportable segments for the years ended December 31, 2025, 2024 and 2023 is shown in the following tables. The “Other” column (i) represents amounts excluded from specific segments, such as business development operations, stock-based compensation expense and corporate expenses included in Selling, general, administrative and development expense; Other operating expenses; Interest income; Interest expense; Gain (loss) on retirement of long-term obligations; and Other income (expense), and (ii) reconciles segment operating profit to Income from continuing operations before income taxes.

F-50

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

						Property																														Total Property						Services						Other						Total
Year ended December 31, 2025						U.S. & Canada						Africa & APAC						Europe						Latin America						Data Centers
Segment revenues						$	5,248.7					$	1,422.9					$	937.7					$	1,642.6					$	1,053.1					$	10,305.0					$	339.6											$	10,644.6
Segment operating expenses						870.0						446.5						344.2						511.0						402.4						2,574.1						174.0												2,748.1
Segment gross margin						4,378.7						976.4						593.5						1,131.6						650.7						7,730.9						165.6												7,896.5
Segment selling, general, administrative and development expense (1)						166.6						76.1						69.6						102.6						88.5						503.4						27.4												530.8
Segment operating profit						$	4,212.1					$	900.3					$	523.9					$	1,029.0					$	562.2					$	7,227.5					$	138.2											$	7,365.7
Stock-based compensation expense																																																$	174.2					174.2
Other selling, general, administrative and development expense																																																235.7						235.7
Depreciation, amortization and accretion																																																2,041.6						2,041.6
Other expense (2)																																																1,870.0						1,870.0
Income from continuing operations before income taxes																																																						$	3,044.2
Capital expenditures (3) (4)						$	395.5					$	227.8					$	283.6					$	138.1					$	665.2					$	1,710.2					$	—					$	10.5					$	1,720.7

---

(1)Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $174.2 million.

(2)Primarily includes interest expense and $100.7 million in impairment charges, as further discussed in note 15, and losses from foreign currency exchange rate fluctuations, partially offset by gains from equity securities of $232.6 million. The year ended December 31, 2025 also includes a gain of $53.6 million on the sale of South Africa Fiber.

(3)Includes $4.3 million of finance lease payments included in Repayments of notes payable, credit facilities, term loans, senior notes, secured debt and finance leases in the cash flows from financing activities in the Company’s consolidated statements of cash flows.

(4)Includes $36.0 million of perpetual land easement payments reported in Deferred financing costs and other financing activities in the cash flows from financing activities in the Company’s consolidated statements of cash flows.

						Property																														Total Property						Services						Other						Total
Year ended December 31, 2024						U.S. & Canada						Africa & APAC (1)												Europe						Latin America						Data Centers
Segment revenues						$	5,248.1					$	1,208.0											$	834.7					$	1,717.9					$	924.8					$	9,933.5					$	193.7											$	10,127.2
Segment operating expenses						870.9						380.5												309.4						530.2						390.8						2,481.8						92.6												2,574.4
Segment gross margin						4,377.2						827.5												525.3						1,187.7						534.0						7,451.7						101.1												7,552.8
Segment selling, general, administrative and development expense (2)						161.1						68.0												64.8						111.0						78.8						483.7						21.0												504.7
Segment operating profit						$	4,216.1					$	759.5											$	460.5					$	1,076.7					$	455.2					$	6,968.0					$	80.1											$	7,048.1
Stock-based compensation expense																																																						$	192.7					192.7
Other selling, general, administrative and development expense																																																						236.0						236.0
Depreciation, amortization and accretion																																																						2,028.8						2,028.8
Other expense (3)																																																						965.8						965.8
Income from continuing operations before income taxes																																																												$	3,624.8
Capital expenditures (4) (5) (6)						$	318.6					$	260.9											$	249.6					$	174.2					$	545.0					$	1,548.3					$	—					$	67.5					$	1,615.8

---

(1) Excludes the operating results of ATC TIPL, which are reported as discontinued operations. See note 21 for further discussion.

(2) Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $192.7 million.

(3) Primarily includes interest expense and $68.6 million in impairment charges, as further discussed in note 15, partially offset by gains from foreign currency exchange rate fluctuations and an unrealized gain from equity securities of $70.4 million. The year ended December 31, 2024 also includes a net gain of $8.5 million on the sales of ATC Australia and ATC New Zealand.

(4) Includes $4.7 million of finance lease payments included in Repayments of notes payable, credit facilities, term loans, senior notes, secured debt and finance leases in the cash flows from financing activities in the Company’s consolidated statements of cash flows.

(5) Includes $32.7 million of perpetual land easement payments reported in Deferred financing costs and other financing activities in the cash flows from financing activities in the Company’s consolidated statements of cash flows.

(6) Other capital expenditures includes capital expenditures associated with discontinued operations.

F-51

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

						Property																														Total Property						Services						Other						Total
Year ended December 31, 2023						U.S. & Canada						Africa & APAC (1)									Europe						Latin America						Data Centers
Segment revenues						$	5,216.2					$	1,244.4								$	775.6					$	1,798.3					$	834.7					$	9,869.2					$	143.0											$	10,012.2
Segment operating expenses						849.9						438.4									299.5						566.0						347.6						2,501.4						60.1												2,561.5
Segment gross margin						4,366.3						806.0									476.1						1,232.3						487.1						7,367.8						82.9												7,450.7
Segment selling, general, administrative and development expense (2)						165.1						87.3									65.6						107.9						72.4						498.3						22.9												521.2
Segment operating profit						$	4,201.2					$	718.7								$	410.5					$	1,124.4					$	414.7					$	6,869.5					$	60.0											$	6,929.5
Stock-based compensation expense																																																			$	183.3					183.3
Other selling, general, administrative and development expense																																																			241.5						241.5
Depreciation, amortization and accretion																																																			2,928.5						2,928.5
Other expense (3)																																																			2,046.9						2,046.9
Income from continuing operations before income taxes																																																									$	1,529.3
Capital expenditures (4) (5) (6)						$	410.6					$	435.7								$	218.0					$	205.2					$	428.1					$	1,697.6					$	—					$	132.2					$	1,829.8

---

(1)Excludes the operating results of ATC TIPL, which are reported as discontinued operations. See note 21 for further discussion.

(2) Segment selling, general, administrative and development expenses exclude stock-based compensation expense of $183.3 million.

(3) Primarily includes interest expense and $200.0 million in impairment charges, $80.0 million of goodwill impairment charges in Spain, as further discussed in note 15, and losses from foreign currency exchange rate fluctuations. The year ended December 31, 2023 also includes a net loss of $78.9 million on the sales of Mexico Fiber and ATC Poland.

(4) Includes $6.2 million of finance lease payments included in Repayments of notes payable, credit facilities, term loans, senior notes, secured debt and finance leases in the cash flows from financing activities in the Company’s consolidated statements of cash flows.

(5) Includes $38.7 million of perpetual land easement payments reported in Deferred financing costs and other financing activities in the cash flows from financing activities in the Company’s consolidated statements of cash flows.

(6) Other capital expenditures includes capital expenditures associated with discontinued operations.

Additional information relating to the total assets of the Company’s operating segments is as follows for the years ended December 31,:

			2025						2024
Total Assets (1):
U.S. & Canada property			$	26,798.3					$	26,750.1
Africa & APAC property			4,147.2						3,993.1
Europe property			12,850.4						11,267.2
Latin America property			8,415.6						7,470.7
Data Centers			10,703.9						10,431.6
Services			124.7						113.7
Other (2)			150.3						1,051.0
Total assets			$	63,190.4					$	61,077.4

---

(1)Balances are translated at the applicable period end exchange rate, which may impact comparability between periods.

(2)Balances include corporate assets such as cash and cash equivalents, certain tangible and intangible assets and income tax accounts that have not been allocated to specific segments.

F-52

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

Summarized geographic information related to the Company’s operating revenues for the years ended December 31, 2025, 2024 and 2023 and long-lived assets as of December 31, 2025 and 2024 is as follows:

			2025						2024						2023
Operating Revenues:
U.S. & Canada:
Canada (1)			$	12.0					$	13.3					$	11.7
United States (2)			6,629.4						6,353.3						6,182.2
Africa & APAC (1)(3):
Australia (4)			—						2.6						2.6
Bangladesh			11.0						7.9						5.7
New Zealand (4)			—						1.6						1.6
Philippines			10.4						9.2						8.9
Burkina Faso			56.5						40.1						38.1
Ghana			182.8						126.7						128.6
Kenya			177.6						141.1						120.0
Niger			52.4						51.3						48.4
Nigeria			461.7						384.4						495.4
South Africa (4)			172.6						174.0						157.9
Uganda			297.9						269.1						237.2
Europe (1):
France			130.3						121.7						113.4
Germany			455.5						402.2						363.6
Poland (4)			—						—						0.6
Spain			351.9						310.8						298.0
Latin America (1):
Argentina			43.6						36.2						43.8
Brazil			708.3						786.1						787.3
Chile			117.4						103.7						106.3
Colombia			122.2						110.4						117.0
Costa Rica			25.7						25.3						24.7
Mexico			508.9						544.9						611.8
Paraguay			17.6						16.3						16.3
Peru			98.9						95.0						91.1
Total operating revenues			$	10,644.6					$	10,127.2					$	10,012.2

---

(1) Balances are translated at the applicable exchange rate, which may impact comparability between periods.

(2) Balances include revenue from the Company’s Services and Data Centers segments.

(3) For the years ended December 31, 2024 and 2023, excludes the operating results of ATC TIPL, which are reported as discontinued operations. See note 21 for further discussion.

(4) During the year ended December 31, 2025, the Company completed the sale of South Africa Fiber. During the year ended December 31, 2024, the Company completed the sales of ATC Australia and ATC New Zealand. During the year ended December 31, 2023, the Company completed the sale of ATC Poland.

F-53

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

			2025						2024
Long-Lived Assets (1):
U.S. & Canada:
Canada (2)			$	205.8					$	200.5
United States (3)			28,333.1						28,214.3
Africa & APAC (2):
Bangladesh			24.5						30.2
Philippines			27.7						30.2
Burkina Faso			248.4						230.9
Ghana			225.9						244.9
Kenya			665.4						672.7
Niger			193.8						177.1
Nigeria			385.8						325.4
South Africa (4)			258.8						327.4
Uganda			948.9						939.1
Europe (2):
France			1,432.6						1,265.6
Germany			6,208.4						5,429.5
Spain			3,213.9						2,834.8
Latin America (2):
Argentina			179.0						185.3
Brazil			1,756.2						1,592.1
Chile			560.4						510.1
Colombia			264.7						231.2
Costa Rica			101.3						106.8
Mexico			931.2						859.1
Paraguay			103.1						86.4
Peru			873.6						805.6
Total long-lived assets			$	47,142.5					$	45,299.2

---

(1) Includes Property and equipment, net, Goodwill and Other intangible assets, net.

(2) Balances are translated at the applicable period end exchange rate, which may impact comparability between periods.

(3) Balances include the Company’s data centers assets located in the United States and corporate assets.

(4) As of December 31, 2024, included assets associated with South Africa Fiber, which was sold during the year ended December 31, 2025.

The following customers within the property and services segments individually accounted for 10% or more of the Company’s consolidated operating revenues for the years ended December 31,:

			2025						2024						2023
T-Mobile			18		%				19		%				19		%
AT&T			17		%				18		%				18		%
Verizon Wireless			14		%				13		%				14		%
Telefónica			10		%				10		%				10		%

20. RELATED PARTY TRANSACTIONS

During the years ended December 31, 2025, 2024 and 2023, the Company had no significant related party transactions.

F-54

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

21. DISCONTINUED OPERATIONS

On January 4, 2024, the Company, through its subsidiaries ATC Asia Pacific Pte. Ltd. and ATC Telecom Infrastructure Private Limited (“ATC TIPL”), entered into an agreement with Data Infrastructure Trust (“DIT”), an infrastructure investment trust sponsored by an affiliate of Brookfield Asset Management, pursuant to which DIT agreed to acquire a 100% ownership interest in ATC TIPL (the “ATC TIPL Transaction”). Per the terms of the agreement, total aggregate consideration represented up to approximately 210 billion Indian Rupees (“INR”) (approximately $2.5 billion), including the value of the VIL OCDs and the VIL Shares (each as defined and further discussed below), payments on certain existing customer receivables, the repayment of existing intercompany debt and the repayment, or assumption, of the Company’s existing term loan in India, by DIT.

During the year ended December 31, 2024, ATC TIPL distributed approximately 29.6 billion INR (approximately $354.1 million) to the Company, which included the value of the VIL Shares and the VIL OCDs and the satisfaction of the economic benefit associated with the rights to payments on certain existing customer receivables. The distributions were deducted from the total aggregate consideration received by the Company at closing.

The ATC TIPL Transaction received all government and regulatory approvals during the three months ended September 30, 2024, and on September 12, 2024, the Company completed the sale of ATC TIPL and received total consideration of 182 billion INR (approximately $2.2 billion). The Company used the proceeds from the ATC TIPL Transaction to repay existing indebtedness under the 2021 Multicurrency Credit Facility.

The Company recorded a loss on the sale of ATC TIPL of $1.2 billion, which primarily included the reclassification of the Company’s cumulative translation adjustment in India upon exiting the market of $1.1 billion. The loss on sale of ATC TIPL was included in Loss from discontinued operations, net of taxes in the consolidated statements of operations for year ended December 31, 2024.

Proceeds received at closing			$	2,158.8
Net assets at closing			(2,257.6)
Loss on sale			$	(98.8)
Deal costs			(20.5)
Contingent liability for tax indemnification			(53.9)
Reclassification of cumulative translation adjustment			(1,072.3)
Total loss on sale included in loss from discontinued operations, net of taxes			$	(1,245.5)

The following table presents key components of Loss from discontinued operations, net of taxes in the consolidated statements of operations:

			Year Ended December 31,
			2025						2024 (1)						2023
Revenue			$	—					$	911.2					$	1,132.0
Cost of operations			—						(473.8)						(699.1)
Depreciation, amortization and accretion			—						(96.0)						(158.0)
Selling, general, administrative and development expense			—						(58.7)						(46.5)
Other operating expense			—						(6.7)						(7.0)
Loss on sale of ATC TIPL (2)			—						(1,245.5)						—
Goodwill impairment			—						—						(322.0)
Operating loss			—						(969.5)						(100.6)
Interest income			—						30.7						24.8
Interest expense			—						(7.6)						(10.0)
Other income, net			—						46.5						77.8
Loss from discontinued operations before taxes			$	—					$	(899.9)					$	(8.0)
Income tax provision			—						(78.4)						(63.4)
Loss from discontinued operations, net of taxes			$	—					$	(978.3)					$	(71.4)

---

F-55

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

(1)Includes the results of operations for ATC TIPL through September 12, 2024.

(2)Primarily includes the reclassification of the Company’s cumulative translation adjustment in India upon exiting the market of $1.1 billion.

Goodwill Impairments

The Company reviews goodwill for impairment annually (as of December 31) or whenever events or circumstances indicate the carrying amount of an asset may not be recoverable, as further discussed in note 1.

The Company concluded that a triggering event occurred during the year ended December 31, 2023 with respect to its India reporting unit primarily due to indications of value received from third parties in connection with the Company’s review of various strategic alternatives for its India operations, which concluded in the ATC TIPL Transaction. As a result, the Company performed an interim quantitative goodwill impairment test as of September 30, 2023, using, among other things, the information obtained from third parties to compare the estimated fair value of the India reporting unit to its carrying amount, including goodwill. The result of the Company’s interim goodwill impairment test as of September 30, 2023 indicated that the carrying amount of the Company's India reporting unit exceeded its estimated fair value. As a result, the Company recorded a goodwill impairment charge of $322.0 million during the three months ended September 30, 2023.

The cash flows related to discontinued operations have not been segregated and are included in the consolidated statements of cash flows. The following table presents key cash flow and non-cash information related to discontinued operations:

			Year Ended December 31,
			2025						2024 (1)						2023
Proceeds from the sale of ATC TIPL			$	—					$	2,158.8					$	—
Capital expenditures			—						(52.3)						(111.9)
Significant non-cash items:
Depreciation, amortization and accretion			—						96.0						158.0
Stock-based compensation expense			—						10.9						12.4
Impairments, net loss on sale of long-lived assets, non-cash restructuring and merger related expenses			—						(2.3)						318.2
Gain on investments, unrealized foreign currency (gain) loss and other non-cash expense			—						(30.7)						(82.5)
Loss on sale of ATC TIPL (2)			—						1,245.5						—

---

(1)Includes the cash flows for ATC TIPL through September 12, 2024.

(2)Primarily includes the reclassification of the Company’s cumulative translation adjustment in India upon exiting the market of $1.1 billion.

VIL Optionally Convertible Debentures—In February 2023, and as amended in August 2023, one of the Company’s customers in India, Vodafone Idea Limited (“VIL”), issued optionally convertible debentures (the “VIL OCDs”) to the Company’s subsidiary, ATC TIPL, in exchange for VIL’s payment of certain amounts towards accounts receivables. The VIL OCDs were (a) to be repaid by VIL with interest or (b) convertible into equity of VIL. The VIL OCDs were issued for an aggregate face value of 16.0 billion INR (approximately $193.2 million on the date of issuance). The VIL OCDs were to mature in tranches with 8.0 billion INR (approximately $96.6 million on the date of issuance) maturing on August 27, 2023 and 8.0 billion INR (approximately $96.6 million on the date of issuance) maturing on August 27, 2024. In August 2023, the Company amended the agreements governing the VIL OCDs to, among other items, extend the maturity of the first tranche of the VIL OCDs to August 27, 2024. The fair value of the VIL OCDs at issuance was approximately $116.5 million. The VIL OCDs accrued interest at a rate of 11.2% annually. Interest was payable to ATC TIPL semi-annually, with the first payment received in September 2023.

On March 23, 2024, the Company converted an aggregate face value of 14.4 billion INR (approximately $172.7 million) of VIL OCDs into 1,440 million shares of equity of VIL (the “VIL Shares”).

On April 29, 2024, the Company completed the sale of 1,440 million VIL Shares at a price of 12.78 INR per share. The net proceeds for this transaction were approximately 18.0 billion INR (approximately $216.0 million at the date of settlement) after deducting commissions and fees.

On June 5, 2024, the Company completed the sale of the remaining aggregate face value of 1.6 billion INR (approximately $19.2 million) of the VIL OCDs. The net proceeds for this transaction, excluding accrued interest, were approximately 1.8 billion INR (approximately $22.0 million at the date of settlement) after deducting fees.

F-56

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Tabular amounts in millions, unless otherwise disclosed)

During the year ended December 31, 2024, the Company recognized a gain of $46.4 million on the sales of the VIL Shares and the VIL OCDs. The gains on the sales of the VIL Shares and the VIL OCDs were recorded in Loss from discontinued operations, net of taxes in the consolidated statements of operations in the current period. As of December 31, 2024, none of the VIL Shares or the VIL OCDs remained outstanding.

22. SUBSEQUENT EVENTS

*Repayment of 4.400% Senior Notes—*On February 13, 2026, the Company repaid $500.0 million aggregate principal amount of the Company’s 4.400% senior unsecured notes due 2026 (the “4.400% Notes”) upon their maturity. The 4.400% Notes were repaid using borrowings under the 2021 Credit Facility and cash on hand. Upon completion of the repayment, none of the 4.400% Notes remained outstanding.

F-57

AMERICAN TOWER CORPORATION AND SUBSIDIARIES

SCHEDULE III—SCHEDULE OF REAL ESTATE

AND ACCUMULATED DEPRECIATION

(dollars in millions)

Description									Encumbrances						Initial cost to company						Cost capitalized subsequent to acquisition						Gross amount carried at close of current period						Accumulated depreciation at close of current period						Date of construction						Date acquired						Life on which depreciation in latest income statements is computed
148,824			Sites (1)						$	1,800.0		(2)			(3)						(3)						$	22,161.5		(5)			$	(9,084.7)					Various						Various						Up to 30 years
30			Data Centers						—						(4)						(4)						7,683.4			(5)			(1,581.9)						Various						Various						Up to 40 years

---

(1) No single site exceeds 5% of the total amounts indicated in the table above.

(2) Certain assets secure debt of $1.8 billion.

(3) The Company has omitted this information, as it would be impracticable to compile such information on a site-by-site basis.

(4) The Company has aggregated data center information on a basis consistent with its tower portfolio.

(5) Does not include those sites under construction.

			2025						2024						2023
Gross amount at beginning			$	27,582.5					$	28,239.2					$	27,060.9
Additions during period:
Acquisitions (1)			348.5						91.8						105.2
Discretionary capital projects (2)			920.0						846.6						860.2
Discretionary ground lease purchases (3)			194.4						130.5						126.0
Redevelopment capital expenditures (4)			242.2						335.8						451.5
Capital improvements (5)			159.6						154.4						192.7
Start-up capital expenditures (6)			67.3						79.6						136.7
Other (7)			785.3						416.7						(11.6)
Total additions			2,717.3						2,055.4						1,860.7
Deductions during period:
Cost of real estate sold or disposed (8)			(360.4)						(252.4)						(202.8)
Other (9)			(94.5)						(2,459.7)						(479.6)
Total deductions			(454.9)						(2,712.1)						(682.4)
Balance at end			$	29,844.9					$	27,582.5					$	28,239.2
Amounts related to discontinued operations			$	—					$	—					$	1,516.6

			2025						2024						2023
Gross amount of accumulated depreciation at beginning			$	(9,683.6)					$	(9,820.6)					$	(8,669.5)
Additions during period:
Depreciation			(974.0)						(1,002.3)						(1,353.5)
Other (9)			(250.4)						—						—
Total additions			(1,224.4)						(1,002.3)						(1,353.5)
Deductions during period:
Amount of accumulated depreciation for assets sold or disposed (8)			241.4						166.0						89.0
Other (9)			—						973.3						113.4
Total deductions			241.4						1,139.3						202.4
Balance at end			$	(10,666.6)					$	(9,683.6)					$	(9,820.6)
Amounts related to discontinued operations			$	—					$	—					$	(598.7)

---

(1)Includes amounts related to the acquisition of data centers.

(2)Includes amounts incurred primarily for the construction of new sites.

(3)Includes amounts incurred to purchase or otherwise secure the land under communications sites.

(4)Includes amounts incurred to increase the capacity of existing sites, which results in new incremental tenant revenue.

(5)Includes amounts incurred to enhance existing sites by adding additional functionality, capacity or general asset improvements.

(6)Includes amounts incurred in connection with acquisitions or new market launches. Start-up capital expenditures includes non-recurring expenditures contemplated in acquisitions, new market launch business cases or initial deployment of new technologies or platform expansion initiatives that lead to an increase in site-level cash flow generation.

F-58

(7)Primarily includes regional improvements, other additions and net adjustments related to the Company’s asset retirement obligations. Also includes foreign currency exchange rate fluctuations.

(8)For the year ended December 31, 2025, includes the impact of the sale of South Africa Fiber.

(9)Primarily includes foreign currency exchange rate fluctuations and other deductions. For the year ended December 31, 2024, includes the impact of the sales of ATC TIPL, ATC Australia and ATC New Zealand. For the year ended December 31, 2023, includes the impact of the sales of Mexico Fiber and ATC Poland.

F-59