American Tower Corporation: 10-K Risk Factor Changes

Significant consolidation among our customers could reduce demand for our communications infrastructure and may materially and adversely affect our growth and revenues. Certain combined companies have rationalized duplicative parts of their networks or modernized their networks, and these and other customers could determine not to renew, or attempt to cancel, avoid or limit leases or related payments with us. Additionally, some of our international customers may use consolidation and/or restructuring to address financial or other competitive pressures, which could in turn result in the sale of wireless assets. In the event a customer terminates, consolidates or restructures its business, or separately sells its spectrum or wireless assets, we may experience increased churn as a result. Our ongoing contractual revenues and our future results may be negatively impacted if a significant number of these leases are terminated or not renewed. In addition, extensive sharing of site infrastructure through RAN sharing, roaming or resale arrangements among wireless service providers, including due to increases in advanced network technology such as 5G, as an alternative to leasing our communications sites, without compensation to us, may cause new lease activity to slow if carriers utilize shared equipment rather than deploy new equipment, or may result in the decommissioning of equipment on certain existing sites because portions of the customers’ networks may become redundant.

Significant consolidation among our customers could reduce demand for our communications infrastructure and may materially and adversely affect our growth and revenues. Certain combined companies have rationalized duplicative parts of their networks or modernized their networks, and these and other customers could determine not to renew, or attempt to cancel, avoid or limit leases or related payments with us. Additionally, some of our international customers may use consolidation and/or restructuring to address financial or other competitive pressures, which could in turn result in the sale of wireless assets. In the event a customer terminates, consolidates or restructures its business, or separately sells its spectrum or wireless assets, we may experience increased churn as a result. Our ongoing contractual revenues and our future results may be negatively impacted if a significant number of these leases are terminated or not renewed. For example, see our discussion of churn as a result of the T-Mobile MLA in our U.S. & Canada property segment in Item 7 of this Annual Report, under the caption “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Executive Overview.” In addition, extensive sharing of site infrastructure through RAN sharing, roaming or resale arrangements among wireless service providers, including due to increases in advanced network technology such as 5G, as an alternative to leasing our communications sites, without compensation to us, may cause new lease activity to slow if carriers utilize shared equipment rather than deploy new equipment, or may result in the decommissioning of equipment on certain existing sites because portions of the customers’ networks may become redundant.

A substantial portion of our total operating revenues is derived from a small number of customers. If any of these customers are unwilling or unable to perform their obligations under their agreements with us, our revenues, results of operations, financial condition and liquidity could be materially and adversely affected. In addition, our growth projections are based on future revenue from a small number of customers, and such projections could be adversely impacted by adverse changes in the creditworthiness and financial strength of our customers. The following is a list of significant customers (representing at least 10% of revenue in any of the last three years) and the percentage of our total revenues for the specified time periods received from these customers: For the year ended December 31,202520242023T-Mobile18 %19 %19 %AT&T 17 %18 %18 %Verizon Wireless14 %13 %14 %Telefónica10 %10 %10 % T-Mobile AT&T Verizon Wireless Telefónica One or more of our customers, or their parent companies, may experience financial difficulties, file for bankruptcy, reduce or terminate their operations or exit certain markets as a result of a prolonged economic downturn, economic difficulties (such as those from the imposition of taxes, fees (including the cost of, and access to, spectrum), regulations or judicial interpretations of regulations, and any associated penalties or interest, which may be substantial) or otherwise. Impacts on the economic environment, such as inflation or rising interest rates, could materially and adversely affect our customers through disruptions of, among other things, their ability to procure their equipment through their supply chains, their ability to procure power and fuel and their ability to maintain liquidity and deploy network capital, with potential decreases in consumer spending contributing to liquidity risks. Such financial difficulties could result in uncollectible accounts receivable and an impairment of our deferred rent asset, tower asset, network location intangible asset, tenant-related intangible asset or goodwill. The loss of significant customers, or the loss of all or a portion of our anticipated lease revenues from certain customers, could have a material adverse effect on our business, results of operations or financial condition. Due to the long-term nature of our customer leases, we depend on the continued financial strength of our customers. Many communications service providers operate with substantial levels of debt. In our international operations, many of our customers are subsidiaries of global telecommunications companies. These subsidiaries may not have the explicit or implied financial support of their parent entities. In addition, many of our customers and potential customers rely on capital raising activities to fund their operations and capital expenditures, which may be more difficult or expensive in the event of downturns in the economy or disruptions in the financial and credit markets, including those caused by factors such as inflation, currency devaluations and other foreign currency exchange rate volatility, higher interest rates and supply chain disruptions. If our customers or potential customers are unable to raise adequate capital to fund their business plans or face capital constraints, they may reduce their spending, file for bankruptcy, reduce or terminate their operations or exit certain markets, which could materially and adversely affect demand for our communications infrastructure and our services business. For example, during the second half of 2025, Echostar Corporation, parent company to DISH, announced agreements to sell a material amount of spectrum licenses, and subsequently began to abandon and decommission deployment of portions of its 5G VoNR and broadband network. DISH represented approximately 2% and 4% of our total annual property revenue and total annual U.S. & Canada property revenue, respectively, for 2025.

A substantial portion of our total operating revenues is derived from a small number of customers. If any of these customers are unwilling or unable to perform their obligations under their agreements with us, our revenues, results of operations, financial condition and liquidity could be materially and adversely affected. In addition, our growth projections are based on future revenue from a small number of customers, and such projections could be adversely impacted by adverse changes in the creditworthiness and financial strength of our customers. One or more of our customers, or their parent companies, may experience financial difficulties, file for bankruptcy or reduce or terminate operations as a result of a prolonged economic downturn, economic difficulties (such as those from the imposition of 10 10 10 Table of Contents Table of Contents taxes, fees (including the cost of, and access to, spectrum), regulations or judicial interpretations of regulations, and any associated penalties or interest, which may be substantial) or otherwise. The current inflationary and high interest rate environment could materially and adversely affect our customers through disruptions of, among other things, their ability to procure their equipment through their supply chains, their ability to procure power and fuel and their ability to maintain liquidity and deploy network capital, with potential decreases in consumer spending contributing to liquidity risks. Such financial difficulties could result in uncollectible accounts receivable and an impairment of our deferred rent asset, tower asset, network location intangible asset, tenant-related intangible asset or goodwill. The loss of significant customers, or the loss of all or a portion of our anticipated lease revenues from certain customers, could have a material adverse effect on our business, results of operations or financial condition. Due to the long-term nature of our customer leases, we depend on the continued financial strength of our customers. Many communications service providers operate with substantial levels of debt. In our international operations, many of our customers are subsidiaries of global telecommunications companies. These subsidiaries may not have the explicit or implied financial support of their parent entities. In addition, many of our customers and potential customers rely on capital raising activities to fund their operations and capital expenditures, which may be more difficult or expensive in the event of downturns in the economy or disruptions in the financial and credit markets, such as the current environment driven by the significant challenges caused by factors such as inflation, currency devaluations and other foreign currency exchange rate volatility, higher interest rates and supply chain disruptions. If our customers or potential customers are unable to raise adequate capital to fund their business plans or face capital constraints, they may reduce their spending, file for bankruptcy or reduce or terminate operations, which could materially and adversely affect demand for our communications infrastructure and our services business. In the ordinary course of our business, we do occasionally experience disputes with our customers, generally regarding the interpretation of terms in our leases. Historically, we have resolved these disputes in a manner that did not have a material adverse effect on us or our relationships with our customers. However, it is possible that such disputes could lead to a termination of our leases with those customers, a material adverse modification of the terms of those leases or a deterioration in our relationships with those customers that leads to a failure to obtain new business from them, any of which could have a material adverse effect on our business, results of operations or financial condition. If we are forced to resolve any of these disputes through litigation or arbitration, our relationship with the applicable customer could be terminated or damaged, which could lead to decreased revenue or increased costs, resulting in a corresponding adverse effect on our business, results of operations or financial condition.

Our business, and that of our customers, is subject to federal, state, local and foreign laws, treaties and regulations and administrative and judicial decisions. In certain jurisdictions, these regulations, laws and treaties could be applied or be enforced retroactively. Zoning authorities and community organizations are sometimes opposed to the construction of communications sites in their communities, which can delay, prevent or increase the cost of new tower or data center construction, modifications, additions of new antennas to a site or site upgrades, thereby limiting our ability to respond to customer demands. Existing or new regulatory policies, regulations or laws may materially and adversely affect the timing, cost or completion of our communications sites or result in changes in the competitive landscape that may negatively affect our business. Noncompliance could result in the imposition of fines or an award of damages to litigants or result in decreased revenue or the potential loss of our sites. In addition, in certain jurisdictions, we and certain of our customers are required to pay annual licenses, fees or taxes, which may be subject to substantial increases by the government, or new fees may be enacted and applied retroactively. In some instances, government regulation restricting foreign ownership of our customers could result in loss of revenue or penalties. Governmental licenses may also be subject to periodic renewal and additional conditions to receive or maintain such license. Additionally, we have government customers for several of our communications sites and data centers, which subjects us to risks including early termination, audits, investigations, sanctions and penalties. Our data centers segment is also subject to various federal, state and local environmental and health and safety laws and regulations in the United States, as set forth in Item 1A of this Annual Report under the caption “Risk Factors— Our data center segment contains certain operational differences from our tower leasing operations resulting in different operational risks. If we do not successfully operate our data center segment or identify or manage the related operational risks, such operations may produce results that are lower than anticipated.” Furthermore, the tax laws, regulations, applicable license terms and conditions, and interpretations governing our business, and that of our customers, in jurisdictions where we operate, may change at any time, potentially with retroactive effect. The evolving nature of global tax laws and regulations and compliance approaches could have an impact on our financial results. This includes changes in tax laws, transfer pricing regulations, spectrum use terms, administrative compliance guidance or judicial interpretations thereof. In recent years, there have been some legislative proposals regarding tax laws applicable to REITs. Any increases in tax liability could reduce the amount of cash available for other purposes. In addition, as of January 1, 2024, we and our subsidiaries, in principle, became subject to the Organization for Economic Cooperation and Development (the “OECD”) Global Anti-Base Erosion Rules (the “Pillar 2 Rules”) as promulgated by jurisdictions. The Pillar 2 Rules can potentially lead to additional taxes (“Top-Up Tax”) when the effective tax rate (as defined by the Pillar 2 Rules) in a jurisdiction is below 15%. The Pillar 2 Rules, however, do not apply to “Excluded Entities” and certain subsidiaries of Excluded Entities. We believe we qualify as an Excluded Entity as a “Real Estate Investment Vehicle.” In the event certain subsidiaries do not qualify as Excluded Entities, available “Safe Harbor” rules could apply that would exempt the entities from any Top-Up Tax. For 2025, the Under-Taxed Payments Rule (UTPR) Safe Harbor excludes all US income from the Pillar 2 Rules. In addition, substantially all of our non-excluded, non-U.S. jurisdictions qualify for other Safe Harbors. The remaining jurisdictions that may not qualify would have immaterial Top-Up Taxes. Beginning in fiscal year 2026, the U.S. income of non-excluded entities may result in material Top-Up Taxes; however, on January 5, 2026, the OECD announced a comprehensive Side-by-Side Safe Harbor that, if enacted, would exempt U.S.-parented multinational companies from certain Top-Up Taxes under the Pillar 2 Rules beginning January 1, 2026. The Side-by-Side Safe Harbor is not an exemption from any qualified domestic minimum Top-Up Tax. The Side-by-Side Safe Harbor has yet to be enacted in any jurisdiction where we operate that has already implemented the Pillar 2 Rules. Additionally, the Pillar 2 Rules are still yet to be enacted in many of the jurisdictions in which we operate.

Our business, and that of our customers, is subject to federal, state, local and foreign laws, treaties and regulations and administrative and judicial decisions. In certain jurisdictions, these regulations, laws and treaties could be applied or be enforced retroactively. Zoning authorities and community organizations are sometimes opposed to the construction of communications sites in their communities, which can delay, prevent or increase the cost of new tower or data center construction, modifications, additions of new antennas to a site or site upgrades, thereby limiting our ability to respond to customer demands. Existing or new regulatory policies, regulations or laws may materially and adversely affect the timing, cost or completion of our communications sites or result in changes in the competitive landscape that may negatively affect our business. Noncompliance could result in the imposition of fines or an award of damages to litigants or result in decreased revenue. In addition, in certain jurisdictions, we and certain of our customers are required to pay annual licenses, fees or taxes, which may be subject to substantial increases by the government, or new fees may be enacted and applied retroactively. In some instances, government regulation restricting foreign ownership of our customers could result in loss of revenue or penalties. Governmental licenses may also be subject to periodic renewal and additional conditions to receive or maintain such license. Additionally, we have government customers for several of our communications sites and data centers, which subjects us to risks including early termination, audits, investigations, sanctions and penalties. Furthermore, the tax laws, regulations, applicable license terms and conditions, and interpretations governing our business, and that of our customers, in jurisdictions where we operate, may change at any time, potentially with retroactive effect. Due to the evolving nature of global tax laws and regulations and compliance approaches, it is currently not possible to assess the ultimate impact of these actions on our financial statements, but these actions could have an impact on our financial results. This includes changes in tax laws, transfer pricing regulations, spectrum use terms, administrative compliance guidance or judicial interpretations thereof. In recent years, there have been some legislative proposals regarding tax laws applicable to REITs. Any increases in tax liability could reduce the amount of cash available for other purposes. In addition, as of January 1, 2024, we and our subsidiaries, in principle, would be subject to the Organization for Economic Cooperation and Development (OECD) Global Anti-Base Erosion Rules (more commonly referred to as the “Pillar 2 Rules”) as 15 15 15 Table of Contents Table of Contents promulgated by jurisdictions. The Pillar 2 Rules can potentially lead to additional taxes (“Top-Up Tax”) when the effective tax rate (as defined by the Pillar 2 Rules) in a jurisdiction is below 15%. The Pillar 2 Rules, however, do not apply to “Excluded Entities” and certain subsidiaries of Excluded Entities. We are currently analyzing our qualification as an Excluded Entity as a “Real Estate Investment Vehicle.” In the event we do not qualify as a Real Estate Investment Vehicle, Top-Up Taxes may apply beginning in fiscal year 2026 on our United States income and may be material. Safe harbor exceptions are expected to apply for the majority of our non-United States income, and for those entities that do not meet certain safe harbor tests, the impact to us as a whole is expected to be immaterial. It is noted that the Pillar 2 Rules are still yet to be implemented in most of the jurisdictions in which we operate. Developments will be monitored as guidance and local implementation progresses.

The United States and other large global economies experienced historically high inflation in recent years. Future inflationary effects may be driven by, among other things, supply chain disruptions, changes in trade or tariff policies, governmental stimulus or fiscal policies, as well as ongoing global military conflicts. Inflation can materially and adversely affect us by increasing the costs of land, materials, labor and other costs required to manage and grow our business. In addition, should inflation rates exceed our fixed escalator percentages in markets where our leases include fixed escalators, our returns could be adversely affected. In an inflationary environment, depending on the terms of our contracts and other economic conditions, we may be unable to raise prices enough to keep up with the rate of inflation or our customers may be unwilling to pay contractual increases or demand discounts upon renewal, which would reduce our profit margins and returns. If we are unable to increase our prices to offset the effects of inflation, our business, results of operations and financial condition could be materially and adversely affected. Inflation has also contributed to foreign currency exchange rate volatility, including in several of the markets where we operate. Inflation impacts could also create foreign exchange rate instability in our international markets, including in markets such as Africa and Latin America, that could, in turn, depress the value of that market’s currency, thereby adversely impacting our business, results of operations, financial condition or the underlying value of foreign subsidiaries. In addition, inflation is often accompanied by higher interest rates. The combination of higher interest rates and high inflation could lead to an extended economic downturn, which could reduce our ability to incur debt or access capital and impact our results of operations and financial condition even after these conditions improve. Additionally, higher inflation or higher costs of capital could also impact the risk premiums or market returns on our assets. Changes in costs of capital could adversely impact the underlying value of our assets, which could in turn result in impairment charges. Further, market volatility and disruption caused by factors such as inflation and fluctuating interest rates may impact our ability to raise additional capital through debt and equity financing activities or our ability to repay or refinance maturing liabilities, or impact the terms of any new obligations, which in turn may have an adverse impact on our credit ratings. Federal fund rates have been elevated for several years and, although there were several rate cuts in recent years, rates could remain at current levels for an extended period of time. An increase in rates can have a corresponding impact to our costs of borrowing and may have an adverse impact on our ability to raise funds through the offering of our securities or through the issuance of debt due to higher debt capital costs, diminished credit availability or less favorable equity markets. The extent to which these factors will impact our business and financial results will depend on future developments, which are highly uncertain and cannot be predicted at this time.

The United States and other large global economies experienced historically high inflation in recent years. Current and future inflationary effects may be driven by, among other things, supply chain disruptions, changes in trade policies, governmental stimulus or fiscal policies, as well as ongoing global military conflicts. Inflation can materially and adversely affect us by increasing the costs of land, materials, labor and other costs required to manage and grow our business. In addition, should 13 13 13 Table of Contents Table of Contents inflation rates exceed our fixed escalator percentages in markets where our leases include fixed escalators, our returns could be adversely affected. In an inflationary environment, such as the current economic environment, depending on the terms of our contracts and other economic conditions, we may be unable to raise prices enough to keep up with the rate of inflation or our customers may be unwilling to pay contractual increases or demand discounts upon renewal, which would reduce our profit margins and returns. If we are unable to increase our prices to offset the effects of inflation, our business, results of operations and financial condition could be materially and adversely affected. Inflation has also contributed to foreign currency exchange rate volatility, including in several of the markets where we operate. The ongoing impact of inflation may continue to create foreign exchange rate instability in our international markets, including in markets such as Africa and Latin America, that could, in turn, depress the value of that market’s currency, thereby adversely impacting our business, results of operations, financial condition or the underlying value of foreign subsidiaries. In addition, inflation is often accompanied by higher interest rates. Although the Federal Reserve Board and other central banks began cutting interest rates in the latter part of 2024, interest rates remain above recent norms. The combination of higher interest rates and high inflation could lead to an extended economic downturn, which could reduce our ability to incur debt or access capital and impact our results of operations and financial condition even after these conditions improve. Additionally, higher inflation or higher costs of capital could also impact the risk premiums or market returns on our assets. Changes in costs of capital could adversely impact the underlying value of our assets, which could in turn result in impairment charges.

Our towers, data centers, other telecommunications assets and computer systems are subject to risks associated with natural disasters, such as hurricanes, ice and windstorms, tornadoes, floods, earthquakes and wildfires, as well as other unforeseen events, such as the potential adverse effects of pandemics and acts of terrorism. During the past several years, we have seen an increase in severe weather events and expect this trend to continue due to climate change. Additionally, certain natural disasters or unforeseen events could lead to supply chain delays or shortages, which could impact our operational and financial performance. Moreover, rising incidents of theft, vandalism and fiber cuts targeting our assets could disrupt service and increase costs that we may not be able to fully insure or pass on to customers, which could lead to reputational harm and impact our financial performance. Further, environmental liabilities, such as contamination, asbestos-containing building materials, lead or lead-based paint and mold or other air quality issues at some of our data centers, could arise and have a material adverse effect on our financial condition and performance. 21 21 21 Table of Contents Table of Contents While we maintain insurance coverage for certain natural disasters, we may not have adequate insurance to cover the associated costs of repair or reconstruction of sites or other telecommunications assets for a major future event, lost revenue, including from new customers that could have been added to our towers, data centers or other telecommunications assets but for the event, or other costs to remediate the impact of a significant event, such as wildfire damage caused by our towers. Further, we may be liable for damage caused by towers that collapse for any number of reasons including structural deficiencies, which could harm our reputation and require us to incur costs for which we may not have adequate insurance coverage. Any damage or destruction to, or inability to access, our towers, data centers, other telecommunications assets or computer systems may cause supply chain delays or impact our ability to operate our business or provide services to our customers and lead to customer loss, which could have a material adverse effect on our business, results of operations or financial condition. Additionally, our communications sites could be subject to attacks instigated by claims that the deployment of 5G or similar networks is linked to adverse health effects. Additionally, we must safeguard our customers’ infrastructure and equipment located in our data centers and ensure our data centers remain operational at all times. Problems at one or more of our data centers, whether or not within our control, could result in service interruptions or significant infrastructure or equipment damage. These could result from numerous factors, including limited power availability and grid distribution constraints due to high demand, human error, equipment failure, physical, electronic and cybersecurity breaches, fire, earthquake, hurricane, flood, tornado and other natural disasters, extreme temperatures, water damage, fiber cuts, power loss, terrorist acts, sabotage and vandalism, global pandemics or health emergencies and failure of business partners. Negative public perception or regulations regarding perceived health risks from wireless technologies, including 5G, could slow wireless industry growth and adversely affect our business. Any finding or campaign suggesting radio frequency emissions pose health risks could harm customer relationships, reduce market acceptance and materially impact our operations and financial condition.

Our towers, fiber networks, data centers and computer systems are subject to risks associated with natural disasters, such as hurricanes, ice and windstorms, tornadoes, floods, earthquakes and wildfires, as well as other unforeseen events, such as the potential adverse effects of pandemics and acts of terrorism. During the past several years, we have seen an increase in severe weather events and expect this trend to continue due to climate change. Additionally, certain natural disasters or unforeseen events could lead to supply chain delays or shortages, which could impact our operational and financial performance. Further, environmental liabilities, such as contamination, asbestos-containing building materials, lead or lead-based paint and mold or other air quality issues at some of our data centers, could arise and have a material adverse effect on our financial condition and performance. Any damage or destruction to, or inability to access, our towers, fiber networks, data centers or computer systems may cause supply chain delays or impact our ability to provide services to our customers and lead to customer loss, which could have a material adverse effect on our business, results of operations or financial condition. Additionally, our communications sites could be subject to attacks instigated by claims that the deployment of 5G or similar networks is linked to adverse health effects. While we maintain insurance coverage for certain natural disasters, we may not have adequate insurance to cover the associated costs of repair or reconstruction of sites or fiber for a major future event, lost revenue, including from new customers that could have been added to our towers, fiber networks or data centers but for the event, or other costs to remediate the impact of a significant event, such as wildfire damage caused by our towers. Further, we may be liable for damage caused by towers that collapse for any number of reasons including structural deficiencies, which could harm our reputation and require us to incur costs for which we may not have adequate insurance coverage. Public perception of possible health risks associated with cellular and other wireless communications technology could slow the growth of wireless companies, which could in turn slow our growth. In particular, negative public perception of, and regulations regarding, these perceived health risks, including claims that the deployment of 5G networks is linked to adverse health effects, could undermine the market acceptance of wireless communications services and increase opposition to the development and expansion of tower sites. If a scientific study, court decision, government agency ruling, or misinformation, disinformation or 20 20 20 Table of Contents Table of Contents malinformation campaigns resulted in a finding that radio frequency emissions pose health risks to consumers, it could negatively impact our customers and the market for wireless services, which could materially and adversely affect our business, results of operations or financial condition.

During the course of acquiring or building communications sites and other communications infrastructure assets, including data center facilities and related assets, in our existing markets and expansion into new markets, we are subject to a number of risks and uncertainties, including not meeting our return on investment criteria and financial objectives, increased costs, assumed liabilities and the diversion of managerial attention. Achieving the benefits of acquisition and platform expansion initiatives depends in part on timely and efficient integration of operations, data centers and telecommunications infrastructure assets and personnel. Integration may be difficult and unpredictable for many reasons, including, among other things, increased construction costs or supply chain disruptions, portfolios without requisite permits, differing systems, cultural differences, conflicting policies, procedures and operations or with incomplete information. Significant acquisition-related integration costs, including certain nonrecurring charges such as costs associated with onboarding employees, integrating information technology systems, acquiring permits and visiting, inspecting, engineering and upgrading tower sites or other communications infrastructure assets, could materially and adversely affect our results of operations in the period in which such charges are recorded or our cash flow in the period in which any related costs are actually paid. Some of our acquired portfolios have included sites that do not meet our structural specifications, including sites that may be overburdened. In these cases, beyond additional capital expenditures, general liability risks associated with such portfolios will exist until such time as those portfolios are upgraded or otherwise remedied. In addition, integration may significantly burden management and internal resources, including through the potential loss or unavailability of key personnel. Moreover, we may fail to successfully integrate the assets we acquire or fail to utilize such assets to their full capacity. If we are not able to meet these integration challenges, we may not realize the benefits we expect from our acquired portfolios and businesses, and our business, financial condition and results of operations will be adversely affected. Post-integration, certain operational complexities may remain into the mid- or long-term arising from the acquisition of assets from different sellers until they can be renegotiated, such as the requirement to manage multiple master lease agreements with differing terms with a single client. As a result of our acquisitions, we have a substantial amount of intangible assets and goodwill. In accordance with accounting principles generally accepted in the United States (“GAAP”), we are required to assess our goodwill and other intangible assets annually or more frequently in the event of circumstances indicating potential impairment to determine if they are impaired. If, as a result of the factors noted above, the testing performed indicates that an asset may not be recoverable or the carrying value exceeds the fair value, we would be required to record a non-cash impairment charge in the period the determination is made.

As we continue to acquire and build communications sites and other communications infrastructure assets, including data center facilities and related assets, in our existing markets and expand into new markets, we are subject to a number of risks and uncertainties, including not meeting our return on investment criteria and financial objectives, increased costs, assumed liabilities and the diversion of managerial attention. Achieving the benefits of acquisition and platform expansion initiatives depends in part on timely and efficient integration of operations, telecommunications infrastructure assets and personnel. Integration may be difficult and unpredictable for many reasons, including, among other things, increased construction costs or supply chain disruptions, portfolios without requisite permits, differing systems, cultural differences, conflicting policies, procedures and operations or with incomplete information. We continue to seek to drive organizational improvement through a variety of actions, including operational and digital transformation, integration activities, strategic initiatives and business and operating model assessments. These initiatives can be time-consuming, disruptive to operations, and costly in the short-term. Successfully implementing these and other initiatives throughout our operations is critical to our future competitiveness and our ability to achieve long-term profitability. However, we cannot be certain that these initiatives will be successful in creating profit margins sufficient to sustain our current operating structure and business. Additionally, our future success depends upon our ability to recruit and retain the services of, among others, personnel with IT, data centers and telecommunications-related skills. There may be competition in attracting qualified personnel, and we may experience difficulty retaining and motivating existing employees and attracting qualified personnel to fill key positions. Significant acquisition-related integration costs, including certain nonrecurring charges such as costs associated with onboarding employees, integrating information technology systems, acquiring permits and visiting, inspecting, engineering and upgrading tower sites or other communications infrastructure assets, could materially and adversely affect our results of operations in the period in which such charges are recorded or our cash flow in the period in which any related costs are actually paid. Some of our acquired portfolios have included sites that do not meet our structural specifications, including sites that may be overburdened. In these cases, beyond additional capital expenditures, general liability risks associated with such portfolios will exist until such time as those portfolios are upgraded or otherwise remedied. In addition, integration may significantly burden management and internal resources, including through the potential loss or unavailability of key personnel. Our international expansion initiatives are subject to additional risks, such as those described above, as well as our ability to comply with bribery and anti-corruption laws such as the Foreign Corrupt Practices Act (the “FCPA”) and similar local laws. Moreover, we may fail to successfully integrate the assets we acquire or fail to utilize such assets to their full capacity. If we are not able to meet these integration challenges, we may not realize the benefits we expect from our acquired portfolios and businesses, and our business, financial condition and results of operations will be adversely affected. Post-integration, certain operational complexities may remain into the mid- or long-term arising from the acquisition of assets from different sellers until they can be renegotiated, such as the requirement to manage multiple master lease agreements with differing terms with a single client. We must safeguard our customers’ infrastructure and equipment located in our data centers and ensure our data centers remain operational at all times. Problems at one or more of our data centers, whether or not within our control, could result in service interruptions or significant infrastructure or equipment damage. These could result from numerous factors, including limited 19 19 19 Table of Contents Table of Contents power availability and grid distribution constraints due to current high demand, human error, equipment failure, physical, electronic and cybersecurity breaches, fire, earthquake, hurricane, flood, tornado and other natural disasters, extreme temperatures, water damage, fiber cuts, power loss, terrorist acts, sabotage and vandalism, global pandemics or health emergencies and failure of business partners. We have service level commitment obligations to substantially all of our data center customers. As a result, service interruptions, increased construction costs, significant equipment damage in our data centers and failing to recruit and develop qualified personnel could result in difficulty maintaining service level commitments to these customers and potential claims related to such failures. Because our data centers are critical to many of our customers’ businesses, service interruptions or significant equipment damage in our data centers could also result in lost profits or other indirect or consequential damages to our customers. In addition, any loss of service, equipment damage or inability to meet our service level commitment obligations could reduce the confidence of our customers and could consequently impair our ability to obtain and retain customers, which would adversely affect both our ability to generate revenues and our operating results. Furthermore, we are dependent upon internet service providers, telecommunications carriers and utility providers, some of which have experienced significant system failures and outages in the past. Our customers may in the future experience difficulties due to system failures unrelated to our systems and offerings. If, for any reason, these providers fail to provide the required services, our business, financial condition and results of operations could be adversely impacted. As a result of our acquisitions, we have a substantial amount of intangible assets and goodwill. In accordance with accounting principles generally accepted in the United States (“GAAP”), we are required to assess our goodwill and other intangible assets annually or more frequently in the event of circumstances indicating potential impairment to determine if they are impaired. If, as a result of the factors noted above, the testing performed indicates that an asset may not be recoverable or the carrying value exceeds the fair value, we would be required to record a non-cash impairment charge in the period the determination is made. Our platform expansion growth initiatives may not be successful, or we may be required to record impairment charges for our goodwill or for other intangible assets, which could have an adverse effect on our business, results of operations or financial condition, and could limit our continued investments in such platform expansion initiatives.

We have a substantial amount of indebtedness. As of December 31, 2025, we had approximately $37.2 billion of consolidated debt and the ability to borrow additional aggregate amounts of approximately $9.6 billion under our $6.0 billion senior unsecured multicurrency revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Multicurrency Credit Facility”) and our $4.0 billion senior unsecured revolving credit facility, as amended and restated in December 2021, as further amended (the “2021 Credit Facility”), net of approximately $36.8 million of outstanding undrawn letters of credit. Our leverage and debt service obligations could have significant negative consequences to our business, results of operations or financial condition, including: •requiring the dedication of a substantial portion of our cash flow from operations to service our debt, thereby reducing the amount of our cash flow available for other purposes, including capital expenditures and REIT distributions; •impairing our ability to meet one or more of the financial ratio covenants contained in our debt agreements or to generate cash sufficient to pay interest or principal due under those agreements, which could result in an acceleration of some or all of our outstanding debt and the loss of the towers securing such debt, as applicable, if a default remains uncured; •limiting our ability to obtain additional debt or equity financing, thereby placing us at a possible competitive disadvantage to less leveraged competitors and competitors that may have better access to capital resources, including with respect to acquiring or building assets; and •limiting our flexibility in planning for, or reacting to, changes in our business and the markets in which we compete. 13 13 13 Table of Contents Table of Contents We may need to raise additional capital through debt financing activities, asset sales or equity issuances, even if the then-prevailing market conditions are not favorable, to fund capital expenditures, future growth and expansion initiatives, required purchases of our partners’ interests and to satisfy our distribution requirements and debt service obligations and leverage requirements, including financial ratio covenants. An increase in our total leverage could lead to a downgrade of our credit rating below investment grade, which could negatively impact our ability to access credit markets or preclude us from obtaining funds on investment grade terms, rates and conditions or subject us to additional loan covenants, which could accelerate our debt repayment obligations. Further, certain of our current debt instruments limit the amount of indebtedness we and our subsidiaries may incur. Additional financing, therefore, may be unavailable, more expensive or restricted by the terms of our outstanding indebtedness. Additionally, our Board has approved a share repurchase program allowing us to repurchase common stock through various methods, including open market purchases. The program does not require any specific amount or number of shares to be repurchased, and management will determine timing and volume based on market conditions and other factors. Repurchases could impact stock price, liquidity and cash reserves, potentially affecting future growth opportunities. While intended to enhance long-term shareholder value, there is no guarantee of success, and short-term price fluctuations could reduce the program’s effectiveness. Additionally, our share repurchase program could diminish our available cash, which may impact our ability to finance future growth and pursue possible future strategic opportunities and acquisitions.

Our leverage and debt service obligations could have significant negative consequences to our business, results of operations or financial condition, including: •requiring the dedication of a substantial portion of our cash flow from operations to service our debt, thereby reducing the amount of our cash flow available for other purposes, including capital expenditures and REIT distributions; •impairing our ability to meet one or more of the financial ratio covenants contained in our debt agreements or to generate cash sufficient to pay interest or principal due under those agreements, which could result in an acceleration of some or all of our outstanding debt and the loss of the towers securing such debt if a default remains uncured; •limiting our ability to obtain additional debt or equity financing, thereby placing us at a possible competitive disadvantage to less leveraged competitors and competitors that may have better access to capital resources, including with respect to acquiring or building assets; and •limiting our flexibility in planning for, or reacting to, changes in our business and the markets in which we compete. We may need to raise additional capital through debt financing activities, asset sales or equity issuances, even if the then-prevailing market conditions are not favorable, to fund capital expenditures, future growth and expansion initiatives, required purchases of our partners’ interests and to satisfy our distribution requirements and debt service obligations and leverage requirements, including financial ratio covenants. An increase in our total leverage could lead to a downgrade of our credit rating below investment grade, which could negatively impact our ability to access credit markets or preclude us from obtaining funds on investment grade terms, rates and conditions or subject us to additional loan covenants, which could accelerate our debt repayment obligations. Further, certain of our current debt instruments limit the amount of indebtedness we and our subsidiaries may incur. Additional financing, therefore, may be unavailable, more expensive or restricted by the terms of our outstanding indebtedness. Further, market volatility and disruption caused by factors such as inflation, higher interest rates and supply chain disruptions may impact our ability to raise additional capital through debt and equity financing activities or our ability to repay or refinance maturing liabilities, or impact the terms of any new obligations, which in turn may have an adverse impact on our credit ratings. Federal fund rates have been elevated for several years and, although there were several rate cuts in 2024, rates could remain at current elevated levels for an extended period of time. Such elevated rates have a corresponding impact to our costs of borrowing and may have an adverse impact on our ability to raise funds through the offering of our securities or through the issuance of debt due to higher debt capital costs, diminished credit availability and less favorable equity markets. The extent to which these factors will impact our business and financial results will depend on future developments, which are highly uncertain and cannot be predicted at this time due to the rapid evolution of this uncertain situation.

We continually evaluate the performance, capital needs and strategic fit of all of our businesses and, as a result of such evaluation, may sell some or all of the equity interests in a particular business or components of a business. In recent years, we have divested our Mexico fiber and Poland businesses in 2023, our Australia, India and New Zealand businesses in 2024 and our South Africa fiber business in 2025. Divestitures involve risks, including difficulties in the separation of operations, services, products and personnel, requirements to obtain consents from third parties or potential legal claims or regulatory requirements. We cannot assure you that we will be successful in managing these or any other significant risks that we may encounter related to the divestiture of a business. Any divestiture we undertake could materially and adversely affect our business, reputation, financial condition, results of operations and cash flows, and may also result in a diversion of management’s attention, operational difficulties and losses. Divestitures and our evaluation of assets or businesses in connection with potential divestitures may result in asset impairment charges, including those related to goodwill and other intangible assets, or losses realized in connection with a transaction, which could have an impact on our financial condition and results of operations.

We continually evaluate the performance, capital needs and strategic fit of all of our businesses and, as a result of such evaluation, may sell some or all of the equity interests in a particular business or components of a business. During the year ended December 31, 2024, we divested from operations in several markets, including India, Australia and New Zealand. Divestitures involve risks, including difficulties in the separation of operations, services, products and personnel or requirements to obtain consents from third parties. We cannot assure you that we will be successful in managing these or any 12 12 12 Table of Contents Table of Contents other significant risks that we may encounter related to the divestiture of a business. Any divestiture we undertake could materially and adversely affect our business, reputation, financial condition, results of operations and cash flows, and may also result in a diversion of management’s attention, operational difficulties and losses. Divestitures and our evaluation of assets or businesses in connection with potential divestitures may result in asset impairment charges, including those related to goodwill and other intangible assets, or losses realized in connection with a transaction, which could have an impact on our financial condition and results of operations. Furthermore, as we continue to engage in partnership opportunities to support our expansion initiatives, our partners may have business or economic goals that are inconsistent or conflict with ours, be in positions to take action contrary to our interests, policies or objectives, have competing interests in our, or other, markets that could create conflict of interest issues, withhold consents contrary to our requests or become unable or unwilling to fulfill their commitments, any of which could present challenges with multiple partners or expose us to additional liabilities or costs, including requiring us to assume and fulfill the obligations of that partnership or to execute buyouts of our partners’ interests.

Efforts to regulate greenhouse gas emissions, the use of fossil fuels or requirements to use alternative fuel to power energy resources that serve our data centers or the generators we use in our emerging markets to deliver primary power to our customers may have direct or indirect effects on our business by increasing the cost of compliance. Although in the United States, the current administration has taken steps to reconsider many greenhouse gas initiatives (including reporting and disclosure requirements), there is an increased focus by many foreign (including the European Union), state (including California and New York) and local governments, regulators, investors, employees, customers and other stakeholders regarding environmental and energy policies relating to climate change, greenhouse gas emissions and other climate-related matters, including policies related to disclosure requirements. Accordingly, we will need to be prepared to contend with overlapping, yet distinct, climate-related disclosure requirements in multiple jurisdictions. Although a reduction in greenhouse gas emissions standards and reporting obligations in the U.S. may be possible at the federal level in the short-term, foreign and state governmental initiatives are becoming more stringent and may require us and our customers to make capital expenditures, such as investing in internal compliance systems and investments in personnel, which would result in increased costs for us and our customers. Failure to comply with applicable laws and regulations or other requirements imposed on us could also lead to fines and/or lost revenue.

Efforts to regulate greenhouse gas emissions, the use of fossil fuels or requirements to use alternative fuel to power energy resources that serve our data centers or the generators we use in our emerging markets to deliver primary power to our customers may have direct or indirect effects on our business by increasing the cost of compliance. In addition, there is an increased focus by many governments, regulators, investors, employees, customers and other stakeholders regarding environmental and energy policies relating to climate change, greenhouse gas emissions and other climate-related matters, including policies related to disclosure requirements. Additionally, we will need to be prepared to contend with overlapping, yet distinct, climate-related disclosure requirements in multiple jurisdictions, including in California and in the European Union. These governmental initiatives are becoming more stringent and may require us and our customers to make capital expenditures, such as investing in internal compliance systems and personnel, which would result in increased costs for us. Failure to comply with applicable laws and regulations or other requirements imposed on us could also lead to fines and/or lost revenue. In 2021, we adopted science-based greenhouse gas reduction targets, which were approved by the Science Based Targets initiative and are in line with the goals set forth in the 2015 Paris Agreement. Our ability to achieve these goals are based on several factors, some of which are outside of our control including changing regulatory requirements, the pace of changes in technology and the availability of requisite financing. With changes to our portfolio, such as the divestiture of India and the CoreSite Acquisition, our ability to meet these goals may also be impacted. In addition, to meet our goals, we may need to expend significant resources, which could increase our operational costs. We cannot guarantee that we will achieve our announced environmental, social and governance goals and initiatives. In addition, consumers’ perceptions of our efforts to achieve these goals often differ widely and present risks to our reputation and brand. Failing to meet these goals could result in customer dissatisfaction and damage to our reputation with our key stakeholders, which could in turn adversely impact our results of operations, reputation, financial condition and stock price.