CSX 10-K 2025-12-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(☒) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2025

OR

(☐) TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from __________ to __________

Commission File Number 1-8022

CSX CORPORATION

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

Yes (X) No ( )

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.

Yes ( ) No (X)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes (X) No ( )

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Yes (X) No ( )

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company (as defined in Exchange Act Rule 12b-2).

Large Accelerated Filer (X) Accelerated Filer ( ) Non-accelerated Filer ( ) Smaller reporting company (☐)

Emerging growth company (☐)

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ( )

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report (☒)

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. (☐)

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to § 240.10D-1(b). (☐)

Indicate by check mark whether the registrant is a shell company (as defined in Exchange Act Rule 12b-2).

Yes (☐) No (X)

On June 30, 2025 (which is the last day of the second quarter and the required date to use), the aggregate market value of the Registrant’s voting stock held by non-affiliates was approximately $61 billion (based on the close price as reported on the NASDAQ National Market System on such date).

There were 1,859,556,799 shares of Common Stock outstanding on January 31, 2026 (the latest practicable date that is closest to the filing date).

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant’s Definitive Proxy Statement (the “Proxy Statement”) to be filed no later than 120 days after the end of the fiscal year with respect to its 2026 annual meeting of shareholders.

CSX 2025 Form 10-K p.1

CSX 2025 Form 10-K p.2

CSX CORPORATION

PART I

CSX Corporation, together with its subsidiaries ("CSX" or the “Company”), based in Jacksonville, Florida, is one of the nation's leading transportation companies. The Company provides rail-based freight transportation services including traditional rail service, the transport of intermodal containers and trailers, as well as other transportation services such as rail-to-truck transfers and bulk commodity operations. CSX and the rail industry provide customers with access to an expansive and interconnected transportation network that plays a key role in North American commerce and is critical to the long-term economic success and improved global competitiveness of the United States. In addition, freight railroads provide the most economical and environmentally efficient means to transport goods over land.

CSX Transportation, Inc.

CSX’s principal operating subsidiary, CSX Transportation, Inc. (“CSXT”), provides an important link to the transportation supply chain through its approximately 20,000 route-mile rail network and serves major population centers in 26 states east of the Mississippi River, the District of Columbia and the Canadian provinces of Ontario and Quebec. It has access to over 70 ocean, river and lake port terminals along the Atlantic and Gulf Coasts, the Mississippi River, the Great Lakes and the St. Lawrence Seaway. This access allows the Company to meet the dynamic transportation needs of manufacturers, industrial producers, the automotive industry, construction companies, farmers and feed mills, wholesalers and retailers, and energy producers. The Company’s intermodal business links customers to railroads via trucks and terminals. CSXT also serves thousands of production and distribution facilities through track connections with other Class I railroads and approximately 250 short-line and regional railroads.

CSXT is also responsible for the Company's real estate sales, leasing, acquisition and management and development activities. Substantially all of these activities are focused on supporting railroad operations.

Other Entities

In addition to CSXT, the Company’s subsidiaries include Quality Carriers, Inc. ("Quality Carriers"), CSX Intermodal Terminals, Inc. (“CSX Intermodal Terminals”), Total Distribution Services, Inc. (“TDSI”), TRANSFLO Terminal Services, Inc. (“TRANSFLO”), CSX Technology, Inc. (“CSX Technology”) and other subsidiaries. Quality Carriers is the largest provider of bulk liquid chemicals truck transportation in North America. CSX Intermodal Terminals owns and operates a system of intermodal terminals, predominantly in the eastern United States, and also provides drayage services (the pickup and delivery of intermodal shipments) for certain customers. TDSI serves the automotive industry with distribution centers and storage locations. TRANSFLO connects non-rail served customers to the many benefits of rail by transferring products from rail to trucks. The biggest TRANSFLO markets are chemicals and agriculture, which includes shipments of plastics and ethanol. CSX Technology and other subsidiaries provide support services for the Company.

Operating Model

The Company is focused on developing and strictly maintaining a scheduled service plan with an emphasis on improving customer service, optimizing assets and increasing employee engagement. When this operating model is executed effectively, the Company competes for additional business in the U.S. freight market. Further, this model leads to reduced costs and strong free cash flow generation.

CSX 2025 Form 10-K p.3

CSX CORPORATION

PART I

Lines of Business

During 2025, the Company's services generated $14.1 billion of revenue and served four primary lines of business: merchandise, intermodal, coal and trucking.

• The merchandise business shipped 2.6 million carloads (41% of volume) and generated $8.8 billion in revenue (62% of revenue) in 2025. The Company’s merchandise business is comprised of shipments in the following diverse markets: chemicals, agricultural and food products, automotive, minerals, forest products, metals and equipment, and fertilizers.

• The intermodal business shipped 3.0 million units (48% of volume) and generated $2.1 billion in revenue (15% of revenue) in 2025. The intermodal business combines the superior economics of rail transportation with the flexibility of trucks and offers a cost and environmental advantage over long-haul trucking. Through a network of approximately 30 terminals, the intermodal business serves all major markets east of the Mississippi River and transports mainly manufactured consumer goods in containers, providing customers with truck-like service for longer shipments.

• The coal business shipped 718 thousand carloads (11% of volume) and generated $1.9 billion in revenue (13% of revenue) in 2025. The Company transports domestic coal, coke and iron ore to electricity-generating power plants, steel manufacturers and industrial plants as well as export coal to deep-water port facilities. Most of the export coal the Company transports is used for steelmaking, while the majority of domestic coal the Company ships is used for electricity generation.

• The trucking business generated $816 million, or 6%, of revenue in 2025. Trucking revenue includes revenue from the operations of Quality Carriers.

Other revenue accounted for 4% of the Company’s total revenue in 2025. This category includes revenue from regional subsidiary railroads and incidental charges, including intermodal storage and equipment usage, demurrage and switching. Revenue from regional subsidiary railroads includes shipments by railroads that the Company does not directly operate. Intermodal storage represents charges for customer storage of containers at an intermodal terminal, ramp facility or offsite location beyond a specified period of time. Demurrage represents charges assessed when freight cars are held by a customer beyond a specified period of time. Switching represents charges assessed when a railroad switches cars for a customer or another railroad.

CSX's Committed Workforce

Most of the Company’s employees provide or support transportation services. The Company had approximately 23,000 employees as of December 2025, which includes approximately 16,900 employees that are members of a rail labor union and covered by national agreements with the Class I railroads or CSX-specific agreements. As of the date of this filing, new agreements with an effective date of January 1, 2025, have been fully ratified by most unions, representing nearly 75% of the Company's unionized workforce. The remaining unionized employees are covered under previous agreements while negotiations take place since collective agreements under the Railway Labor Act do not expire, but continue until amended or replaced.

CSX prioritizes workplace safety for employees and is committed to continued improvement through enhanced processes, training, technology, communication, and continuous collaboration with customers and peers across the railroad industry. Training programs and processes are focused on injury and accident prevention as well as emergency preparedness. Additionally, the attainment of key safety targets is a component of management's annual incentive program. The FRA Personal Injury Frequency Index, a measure of the number of FRA-reportable injuries per 200,000 man-hours, was 0.94 in 2025 and 1.23 in 2024.

CSX 2025 Form 10-K p.4

CSX CORPORATION

PART I

The Compensation and Talent Management Committee of the Board of Directors is responsible for the oversight of the Company's workforce and human capital management processes. The Company is committed to developing a culture that promotes workforce satisfaction and expects ethical behavior. The CSX Code of Ethics serves as a guiding standard for ethical behavior and covers many types of matters, including discrimination and harassment as well as safety. Annually, all management employees are required, and union employees are highly encouraged, to complete ethics training.

Company History

A leader in freight rail transportation for nearly 200 years, the Company’s heritage dates back to the early nineteenth century when The Baltimore and Ohio Railroad Company (“B&O”), the nation’s first common carrier, was chartered in 1827. Since that time, the Company has built on this foundation to create a railroad that could safely and reliably service the ever-increasing demands of a growing nation. Since its founding, numerous railroads have combined with the former B&O through merger and consolidation to create what has become CSX. Each of the railroads that combined into the CSX family brought new geographical reach to valuable markets, gateways, cities, ports and transportation corridors.

CSX Corporation was incorporated in 1978 under Virginia law. In 1980, the Company completed the merger of the Chessie System and Seaboard Coast Line Industries into CSX. The merger allowed the Company to connect northern population centers and Appalachian coal fields to growing southeastern markets. Later, the Company’s acquisition of key portions of Conrail, Inc. ("Conrail") allowed CSXT to link the northeast, including New England and the New York metropolitan area, with Chicago and midwestern markets as well as the growing areas in the Southeast already served by CSXT. This current rail network, which now includes the network acquired from Pan Am, allows the Company to directly serve every major market in the eastern United States with safe, dependable, environmentally responsible and fuel efficient freight transportation and intermodal service.

Competition

The business environment in which the Company operates is highly competitive. Shippers typically select transportation providers that offer the most compelling combination of service and price. Service requirements, both in terms of transit time and reliability, vary by shipper and commodity. As a result, the Company’s primary competition varies by commodity, geographic location and mode of available transportation and includes other railroads, motor carriers that operate similar routes across its service area and, to a less significant extent, barges, ships and pipelines.

CSXT’s primary rail competitor is Norfolk Southern Railway, which operates throughout much of the Company’s territory. During 2025, Norfolk Southern Railway entered into an agreement to merge with Union Pacific Railroad to form the nation's only transcontinental rail network, which requires the approval of the Surface Transportation Board. Other railroads also operate in parts of the Company’s territory. Depending on the specific market, competing railroads and deregulated motor carriers may exert pressure on price and service levels. For further discussion on the risk of competition to the Company, see Item 1A. Risk Factors.

CSX 2025 Form 10-K p.5

CSX CORPORATION

PART I

Regulatory Environment

The Company's operations are subject to various federal, state, provincial (Canada) and local laws and regulations generally applicable to businesses operating in the United States and Canada. In the U.S., the railroad operations conducted by the Company's subsidiaries, including CSXT, are subject to the regulatory jurisdiction of the Surface Transportation Board (“STB”), the Federal Railroad Administration (“FRA”), and its sister agency within the U.S. Department of Transportation ("DOT"), the Pipeline and Hazardous Materials Safety Administration (“PHMSA”). Together, FRA and PHMSA have broad jurisdiction over railroad operating standards and practices, including track, freight cars, locomotives and hazardous materials requirements. In addition, the U.S. Environmental Protection Agency (“EPA”) has regulatory authority with respect to matters that impact the Company's properties and operations.

The Transportation Security Administration (“TSA”), a component of the Department of Homeland Security, has broad authority over railroad operating practices that may have homeland security implications. In Canada, the railroad operations conducted by the Company’s subsidiaries, including CSXT, are subject to the regulatory jurisdiction of the Canadian Transportation Agency.

Although the Staggers Act of 1980 significantly deregulated the U.S. rail industry, the STB has broad jurisdiction over rail carriers. The STB regulates routes, fuel surcharges, conditions of service, rates for non-exempt traffic, acquisitions of control over rail common carriers and the transfer, extension or abandonment of rail lines, among other railroad activities. Any new rules from the STB regarding, among other things, competitive access or revenue adequacy could have a material adverse effect on the Company's financial condition, results of operations and liquidity as well as its ability to invest in enhancing and maintaining vital infrastructure. For further discussion on regulatory risks to the Company, see Item 1A. Risk Factors.

Financial Information

Information regarding the Company's results of operations and financial position can be found in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Other Information

CSX makes available on its website www.csx.com, free of charge, its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to those reports as soon as reasonably practicable after such reports are filed with or furnished to the Securities and Exchange Commission (“SEC”). The information on the CSX website is not part of this annual report on Form 10-K. Additionally, the Company has posted its code of ethics on its website, which is also available to any shareholder who requests it. This Form 10-K and other SEC filings made by CSX are also accessible through the SEC’s website at www.sec.gov.

CSX has included the certifications of its Chief Executive Officer (“CEO”) and the Chief Financial Officer (“CFO”) required by Section 302 of the Sarbanes-Oxley Act of 2002 (“the Act”) as Exhibit 31, as well as Section 906 of the Act as Exhibit 32 to this Form 10-K report.

For additional information concerning business conducted by the Company during 2025, see Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.

CSX 2025 Form 10-K p.6

CSX CORPORATION

PART I

The risks set forth in the following risk factors could have a material adverse effect on the Company's financial condition, results of operations or liquidity, and could cause those results to differ materially from those expressed or implied in the Company's forward-looking statements. Additional risks and uncertainties not currently known to the Company or that the Company currently does not deem to be material also may materially impact the Company's financial condition, results of operations or liquidity.

Regulatory, Legislative and Legal

New legislation, regulatory changes or other governmental actions could impact the Company's earnings or restrict its ability to independently negotiate prices.

Legislation passed by Congress or state or local assemblies; new regulations issued by federal, state or local agencies; executive orders issued by the President of the United States or governors; or other governmental actions could significantly affect the revenues, costs (including income taxes), and profitability of the Company's business. In addition, statutes, regulations, orders or other governmental actions that, among other things, impose price constraints, restrict access to government funding, or affect rail-to-rail competition could adversely affect the Company's profitability.

Government regulation and compliance risks may adversely affect the Company's operations and financial results.

The Company is subject to the jurisdiction of various regulatory agencies, including the STB, FRA, PHMSA, TSA, EPA and other state, provincial, local and federal regulatory agencies for a variety of economic, health, safety, labor, environmental, tax, legal, cybersecurity and other matters. New or modified rules or regulations by these agencies could increase the Company's operating costs, adversely impact revenue or reduce operating efficiencies and affect service performance. Noncompliance with applicable laws or regulations could erode public confidence in the Company and can subject the Company to fines, penalties and other legal or regulatory sanctions.

CSXT, as a common carrier by rail, is required by law to transport hazardous materials and could be adversely impacted by non-compliance with applicable regulations or from regulatory and legislative changes.

CSXT is required to comply with regulations regarding the handling of hazardous materials and has a legal obligation to transport certain hazardous materials under the common carrier mandate. Applicable rules issued by the TSA place significant security and safety requirements on passenger and freight railroad carriers, rail transit systems and facilities that ship hazardous materials by rail. Noncompliance with these rules can subject the Company to significant penalties and could be a factor in litigation arising out of a train accident. Finally, legislation preventing the transport of hazardous materials through certain cities could result in network congestion and increase the length of haul for hazardous substances, which could increase operating costs, reduce operating efficiency or increase the risk of an accident involving the transport of hazardous materials.

CSX 2025 Form 10-K p.7

CSX CORPORATION

PART I

The Company may be subject to various claims and lawsuits that could result in significant expenditures.

As part of its railroad and other operations, the Company is subject to various claims and lawsuits related to disputes over commercial practices, labor and unemployment matters, occupational and personal injury claims, property damage or freight damage, environmental and other matters. The Company may experience material judgments or incur significant costs to defend existing and future lawsuits. Although the Company maintains insurance to cover some of these types of claims and establishes reserves when appropriate, final amounts determined to be due on any outstanding matters may exceed the Company's insurance coverage or differ materially from the recorded reserves. Additionally, the Company could be impacted by adverse developments not currently reflected in the Company's reserve estimates.

Operational, Safety and Business Disruption

The Company relies on the security, stability and availability of its technology systems to operate its business.

The Company relies on information technology in all aspects of its business. The security, stability and availability of the Company’s and its key third-party vendors’ information technology systems are critical to its ability to operate safely and effectively and to compete within the transportation industry. A successful data breach, cyber-attack, or the occurrence of any similar incident that impacts the Company’s or its key third-party vendors’ information technology systems could result in a service interruption, train accident, misappropriation of confidential or proprietary information (including personal information), process failure, or other operational difficulties. A disruption or compromise of the Company’s or its key third-party vendors' information technology systems, even for short periods of time, and any resulting theft or compromise of Company confidential or proprietary information (including personal information), could adversely affect the Company’s business or reputation, create significant legal, regulatory or financial exposure and have a material adverse impact on CSX’s business, financial condition or operations.

The Company, its third-party vendors and other companies in the rail and transportation industries have been subject to, and are likely to continue to be the target of, data breaches, cyber-attacks and other similar incidents. These incidents may include, among other things, malware, ransomware, distributed denial of service attacks, social engineering, phishing, theft, malfeasance or improper access by employees or third-party vendors, software bugs, server malfunctions, software or hardware failures, human error, fraud, or other modes of attack or disruption. Attacks of these nature are increasing in frequency, levels of persistence, intensity and sophistication, including by nation-state threat actors or those associated with nation-states. Further, the Company may be at increased risk of experiencing a cyber-attack as a result of being a component of the critical U.S. infrastructure. If such an event takes place, the Company may be required to incur significant expenses in excess of existing cybersecurity insurance coverage. As cybersecurity threats continue to evolve, including the increased maturity of artificial intelligence leveraged by threat actors, the Company may be required to expend significant additional resources to continue to modify or enhance its protective measures or to investigate and remediate any information security vulnerabilities, data breaches, cyber-attacks or other similar incidents. The Company or its third-party vendors may also experience cybersecurity incidents as a result of employees, third-party vendors and other third parties with which they interact working remotely on less secure systems and environments.

Despite the Company’s efforts to protect its information technology systems, it may not be able to prevent or anticipate all data breaches, cyber-attacks or other similar incidents, detect or react to such incidents in a timely manner or adequately remediate any such incident. Due to applicable laws, rules and regulations or contractual obligations, CSX may be held responsible for data breaches, cyber-attacks

CSX 2025 Form 10-K p.8

CSX CORPORATION

PART I

or other similar incidents attributed to its third-party vendors as they relate to the information CSX shares with them.

Additionally, if CSX is unable to successfully acquire, develop, implement, or update new or existing technology, including artificial intelligence, it may suffer adverse financial impacts or a competitive disadvantage within the rail industry and with companies providing other modes of transportation services.

Network or supply chain constraints could have a negative impact on service, operating efficiency or volume of shipments.

CSXT has experienced, and in the future could experience, rail network difficulties related to: (i) locomotive or crew shortages; (ii) labor shortages or other service disruptions in the supply chain affecting trucking, ports, handling facilities, customer facilities or other railroads; (iii) unpredictable increases in demand; (iv) extreme weather conditions; (v) regulatory changes resulting in forced access or impacting where and how fast CSXT can transport freight or maintain routes; (vi) reductions in availability of pooled equipment, including chassis; (vii) impacts from changes in network capacity or structure; (viii) increased passenger activities; or (ix) derailments and other accidents, which could impact CSXT's operational fluidity, leading to deterioration of service, asset utilization and overall efficiency.

CSXT, as a common carrier by rail, transports hazardous materials, which could expose the Company to significant costs and claims in the event of a train accident.

A train accident involving the transport of hazardous materials could result in significant costs and claims arising from personal injury, property or natural resource damage, environmental penalties and remediation obligations. Such claims, if insured, could exceed existing insurance coverage or insurance may not continue to be available at commercially reasonable rates, which could have a material adverse effect on the Company's results of operations, financial condition, and liquidity. Under federal regulations, CSXT is required to transport certain hazardous materials under the legal duty referred to as the common carrier mandate regardless of risk or potential exposure to loss.

CSX 2025 Form 10-K p.9

CSX CORPORATION

PART I

An epidemic or pandemic and the initiatives to reduce its transmission could adversely affect the Company's business.

The Company has been and could in the future be materially and adversely affected by a public health crisis, including a widespread epidemic or pandemic. During a health crisis, policies and initiatives may be instituted by the public and private sector to reduce transmission, such as closures of businesses and manufacturing facilities, the promotion of social distancing, the adoption of working from home by companies and institutions, and travel restrictions. These policies or initiatives could adversely affect demand for the commodities and products that the Company transports, including import and export volume.

In addition, initiatives to reduce transmission could result in supply chain disruptions, which could impact volumes and make it more difficult for the Company to serve its customers. Moreover, operations are negatively affected when a significant number of employees are quarantined as the result of exposure to a contagious illness. To the extent a public health crisis adversely affects the Company's business and financial results, it may also have the effect of heightening many of the other risks described herein.

Future acts of terrorism, war or regulatory changes to combat the risk of terrorism may cause significant disruptions in the Company's operations.

Terrorist attacks, along with any government response to those attacks, may adversely affect the Company's financial condition, results of operations or liquidity. CSXT's rail lines, other key infrastructure and information technology systems may be targets or indirect casualties of acts of terror or war. This risk could cause significant business interruption and result in increased costs and liabilities and decreased revenues. In addition, premiums charged for some or all of the insurance coverage currently maintained by the Company could increase dramatically, or the coverage may no longer be available.

Federal, state and local governmental bodies have adopted legislation and regulations relating to security issues that impact the transportation industry. For example, the Department of Homeland Security adopted regulations that require freight railroads to implement additional security protocols when transporting hazardous materials. Complying with these or future regulations could continue to increase the Company's operating costs and reduce operating efficiencies.

Severe weather or other natural occurrences could result in significant business interruptions and expenditures in excess of available insurance coverage.

The Company's operations may be affected by external factors such as severe weather and other natural occurrences, including floods, hurricanes, fires and earthquakes. As a result, the Company's rail network may be damaged, its workforce may be unavailable, fuel costs may rise and significant business interruptions could occur. In addition, the performance of locomotives and railcars could be adversely affected by extreme weather conditions. Hurricanes as well as storm and flooding events have impacted the Company's network in the past, leading to interrupted service and damage to track structure and equipment. Changes in weather patterns are expected to increase the frequency, severity or duration of certain adverse weather conditions.

Insurance maintained by the Company to protect against loss of business and other related consequences resulting from these natural occurrences is subject to coverage limitations, depending on the nature of the risk insured. This insurance may not be sufficient to cover all of the Company's damages or damages to others, and this insurance may not continue to be available at commercially reasonable rates. Even with insurance, if any natural occurrence leads to a catastrophic interruption of service, the Company may not be able to restore service without a significant interruption to operations.

CSX 2025 Form 10-K p.10

CSX CORPORATION

PART I

Competitive, Economic and Financial

The Company faces competition from other transportation providers.

The Company experiences competition in pricing, service, reliability and other factors from various transportation providers including railroads and motor carriers that operate similar routes across its service area and, to a less significant extent, barges, ships and pipelines. Other transportation providers generally use public rights-of-way that are built and maintained by governmental entities, while CSXT and other railroads must build and maintain rail networks largely using internal resources. Any future improvements or expenditures materially increasing the quality or reducing the cost of alternative modes of transportation such as through the use of automation, autonomy or electrification, or legislation providing for less stringent size or weight restrictions on trucks, could negatively impact the Company's competitive position. Additionally, any currently proposed or other future consolidation in the rail industry could materially affect the regulatory and competitive environment in which the Company operates.

Global economic conditions could negatively affect demand for commodities and other freight.

A decline or disruption in general domestic and global economic conditions that affects demand for the commodities and products the Company transports, including import and export volume, could reduce revenues or have other adverse effects on the Company's cost structure and profitability. For example, slower rates of economic growth in Asia, contraction of European economies, and changes in the global supply of seaborne coal or price of seaborne coal have adverse impacts on U.S. export coal volume and result in lower coal revenue for CSX. Additionally, embargoes or changes to trade agreements or policies, such as tariffs, could result in reduced import and export volumes. If the Company experiences significant declines in demand for its transportation services with respect to one or more commodities and products or continues to experience the impacts of inflation, the Company may experience reduced revenue and increased operating costs, workforce adjustments, and other related activities, which could have a material adverse effect on the Company's financial condition, results of operations and liquidity.

Changing dynamics in the U.S. and global energy markets could negatively impact profitability.

Over time, changing dynamics in the U.S. and global energy markets, including the impacts of regulation and alternative fuel sources, have resulted in lower energy production from coal-fired power plants in CSX's service territory. Changes in natural gas prices, or other factors impacting demand for electricity, could impact future power generation at coal-fired plants, which would affect the Company's coal volumes and revenues.

Weaknesses in the capital and credit markets could negatively impact the Company’s access to capital.

The Company regularly relies on capital markets for the issuance of long-term debt instruments, commercial paper and bank financing from time to time. Instability or disruptions of the capital markets, including credit markets, significant increases in interest rates, or the deterioration of the Company’s financial condition due to internal or external factors, could restrict or prohibit access and could increase financing costs. A significant deterioration of the Company’s financial condition could also reduce credit ratings and could limit or affect its access to external sources of capital and increase the costs of short and long-term debt financing.

CSX 2025 Form 10-K p.11

CSX CORPORATION

PART I

Availability of Critical Supplies and Labor

The unavailability of critical resources could adversely affect the Company’s operational efficiency and ability to meet demand.

Marketplace conditions for resources like locomotives and the availability of qualified personnel, including engineers and conductors as well as other skilled professional or technical employees, could each have a negative impact on the Company’s ability to meet demand for rail service. Although the Company strives to maintain adequate resources and personnel for the current business environment, unpredictable increases in demand for rail services or extreme weather conditions may exacerbate such risks, which could have a negative impact on the Company’s operational efficiency and otherwise have a material adverse effect on the Company’s financial condition, results of operations, or liquidity in a particular period.

Disruption to a key railroad industry supplier could negatively affect operating efficiency and increase costs.

The capital intensive and unique nature of core rail equipment (including rail, ties, freight cars and locomotives) limits the number of railroad equipment suppliers. If any of the current manufacturers stops production or experiences a supply shortage, CSXT could experience a significant cost increase or material shortage. In addition, a few critical railroad suppliers are foreign and, as such, adverse developments in international relations, new trade regulations, disruptions in international shipping or increases in global demand could make procurement of these supplies more difficult or increase CSXT's costs. Additionally, if a fuel supply shortage were to arise, the Company would be negatively impacted.

Failure to complete negotiations on collective bargaining agreements could result in strikes and/or work stoppages.

Most of CSX's employees are represented by labor unions and are covered by collective bargaining agreements. These agreements are either bargained for nationally by the National Carriers Conference Committee or locally between CSX and the union. Such agreements are negotiated over the course of several years and previously have not resulted in any extended work stoppages. Under the Railway Labor Act's procedures (which include mediation, cooling-off periods and the possibility of an intervention by the President of the United States), during negotiations neither party may take action until the procedures are exhausted. If, however, CSX is unable to negotiate acceptable agreements, the employees covered by the Railway Labor Act could strike, which could result in loss of business and increased operating costs as a result of higher wages or benefits paid to union members.

Climate and Environmental

The Company’s operations and financial results could be negatively impacted by climate or weather-related risks as well as regulatory and legislative responses.

There is potential for operational impacts from climate-related risks, including changing weather patterns, in the Company's operational territory, which could impact the Company's network or other assets.

CSX 2025 Form 10-K p.12

CSX CORPORATION

PART I

Climate and emissions-related laws and regulations have been proposed and, in some cases adopted, on the federal, state, provincial and local levels. These final and proposed laws and regulations take the form of restrictions, caps, taxes or other controls on emissions as well as requirements to disclose climate-related information. In particular, the EPA has issued various regulations and may issue additional regulations targeting emission reductions, including rules and standards governing emissions from certain stationary and mobile sources. Any of these pending or proposed laws or regulations, could adversely affect the Company's operations and financial results by, among other things: (i) reducing coal-fired electricity generation due to mandated emission standards; (ii) reducing the consumption of coal as a viable energy resource in the United States and Canada; (iii) increasing the Company's fuel, capital and other operating costs and negatively affecting operating and fuel efficiencies; and (iv) making it difficult for the Company's customers in the U.S. and Canada to produce products in a cost competitive manner. Any of these factors could reduce the amount of shipments the Company handles and have a material adverse effect on the Company's financial condition, results of operations or liquidity. In addition, CSX may become subject to legal requirements to disclose climate-related information and may become subject to demands or expectations by its supply chain partners, customers or other stakeholders to disclose information relating to climate risk or set related targets or goals. The Company's current practices with respect to climate risk disclosure may fail to meet these developing legal requirements or stakeholder demands or expectations. In addition, legislative or regulatory uncertainties and change regarding climate-related risks, including inconsistent perspectives or requirements, are likely to result in higher regulatory, compliance, credit, reputational and other risks and costs.

The Company is subject to environmental laws and regulations that may result in significant costs.

The Company is subject to wide-ranging federal, state, provincial and local environmental laws and regulations concerning, among other things, emissions into the air, ground and water; the handling, storage, use, generation, transportation and disposal of waste and other materials; the clean-up of hazardous material and petroleum releases and the health and safety of our employees. If the Company violates or fails to comply with these laws and regulations, CSX could be fined or otherwise sanctioned by regulators. The Company can also be held liable for consequences arising out of human exposure to any hazardous or otherwise harmful substances that CSX is transporting or storing. In certain circumstances, environmental liability can extend to formerly owned or operated properties, leased properties, adjacent properties and properties owned by third parties or Company predecessors, as well as to properties currently owned, leased or used by the Company.

The Company has been, and may in the future be, subject to allegations or findings to the effect that it has violated, or is strictly liable under, environmental laws or regulations, and such violations can result in the Company's incurring fines, penalties or costs relating to the cleanup of environmental contamination. Although the Company believes it has appropriately recorded current and long-term liabilities for known and reasonably estimable future environmental costs, it could incur significant costs that exceed reserves or require unanticipated cash expenditures as a result of any of the foregoing. The Company also may be required to incur significant expenses to investigate and remediate known, unknown or future environmental contamination.

None

CSX 2025 Form 10-K p.13

CSX CORPORATION

PART I

Cybersecurity Risk Management and Strategy

Strong performance and reliability of the Company's technology systems are critical to operating safely and effectively, and protecting personal and customer data is essential to maintaining stakeholder trust. The Company has implemented processes designed to assess, identify, and manage material cybersecurity risks, as described further below. CSX maintains a cybersecurity framework that is integrated across the organization through people, processes and technology to help protect the personal information of its customers, its contractors and its suppliers as well as protect the integrity of its own operations. Cybersecurity is also integrated into the Company’s Enterprise Risk Management (“ERM”) program.

The Company equips CSX systems with various cybersecurity tools, conducts vulnerability scans and provides critical cybersecurity information to application users, as appropriate. The Company also takes proactive measures to advise CSX employees of how they can assist the Company in its cybersecurity practices. CSX informs employees on cybersecurity best practices, including how to identify cyber-related suspicious activity, how to report such activity and, as appropriate, proactive measures employees can take to safeguard company information and devices. The Company also provides cybersecurity awareness training to employees and conducts cybersecurity testing exercises to help maintain cybersecurity vigilance. With the assistance of third-party consultants, the Company conducts an annual cybersecurity exercise, which is often a "tabletop" scenario involving a cross-functional group responding to a hypothetical cybersecurity threat.

The Company considers its material cybersecurity-related risks, as described in more detail below and at Item 1A. Risk Factors, and applies various frameworks to establish controls that are reasonably designed to identify, protect, detect, respond to, and recover from significant cybersecurity incidents. The Company also tests its cybersecurity program to assess whether enhancements to cybersecurity measures are appropriate, such as additional detection and prevention capabilities. These tests may include the use of internal or third-party external risk assessments, and penetration testing. The Company also conducts periodic cybersecurity assessments, as appropriate, pursuant to its annual risk assessment process. Third party resources may also be used for these assessments.

As part of its cybersecurity program, CSX partners with a third-party to provide a managed service that is designed to enable continuous monitoring at its Security Operation Center ("SOC"). The SOC has established processes to identify, address, and remediate cybersecurity threats or vulnerabilities. This includes the engagement, where necessary, of third-party experts, advisors, and other cybersecurity professionals that have been retained by the Company to assist in responding to cybersecurity incidents or threats. Company processes also include various procedures for notifying members of the company's cybersecurity department, Chief Information Security Officer ("CISO"), legal department, accounting department, and others as applicable.

The Company has processes designed to provide reasonable oversight for the identification of cybersecurity risks associated with certain third-party service providers. As appropriate, the Company requires certain third-party providers to complete a cybersecurity questionnaire, to provide Service Organization Control assessment results, when such results exist, or to agree to contractual language regarding cybersecurity and incident notification obligations in agreements with the company. CSX also has processes that help monitor risks associated with its key third-party vendors’ technology systems, including, where appropriate, performing security assessments of cyber incidents through dashboard alerting for reported events. CSX’s internal cybersecurity processes and disclosure protocols consider cybersecurity incidents involving key applications provided by third-parties.

CSX 2025 Form 10-K p.14

CSX CORPORATION

PART I

The Company, its third-party vendors and other companies in the rail and transportation industries have been subject to, and are likely to continue to be the target of, data breaches, cyber-attacks and other similar incidents as discussed in more detail in Item 1A. Risk Factors. In light of the numerous cybersecurity risks that CSX faces, it is reasonably likely that any of the related risks, individually or collectively, if significant, could materially affect the Company’s operations, including but not limited to service interruption, train accident or derailment, misappropriation of confidential or proprietary information (including personal information), process failure, or other operational difficulties.

Cybersecurity Governance

The cybersecurity program and related risks at CSX are managed by the Assistant Vice President of Cloud Infrastructure Platforms and CISO. The Company's CISO has over 29 years of industry experience including administration of military command and control systems, infrastructure platforms, process governance, and security architecture. The CISO is supported by a team of dedicated cybersecurity professionals as well as various resources from a Managed Security Service Provider.

The CISO is notified of cybersecurity events as needed based on the Company’s processes for addressing cybersecurity incidents and threats. The SOC, with the assistance of outside third-parties as needed, analyzes, evaluates and remediates cybersecurity incidents and provides investigative information to the CISO. Depending on the significance of any specific cybersecurity incident or threat, and/or relation to prior incidents, the CISO will escalate relevant information, as appropriate, and the Company’s legal and accounting groups, with assistance from other company departments and third parties, will assist in assessing potential SEC disclosure obligations. The CISO coordinates disclosure to other agencies, when necessary, including requirements under the Transportation Security Administration directives.

More significant cybersecurity incidents or threats may result in notifications to senior leadership and, if necessary, to the Audit Committee and the Board of Directors. Additionally, a cybersecurity governance briefing takes place at least semiannually with leaders from the Company's technology, operations, commercial, legal, and accounting departments to discuss cybersecurity risks, threats, and incidents, as well as updates from the SOC and an assessment of ways to mitigate and remediate any threats or incidents the Company may be facing.

The Company's Audit Committee of the Board of Directors oversees the Company's cybersecurity risk, mitigation strategies and overall resiliency of the Company’s technology infrastructure. Such risk is managed as part of the Company’s overall risk management and business continuity processes and is included in the ERM program, which is also overseen by the Audit Committee. The Audit Committee periodically reviews assessments of information security controls and procedures, any incidents that could have a potentially significant impact on the company’s network, and potential cybersecurity risk disclosures. The Company's senior leadership team briefs the Audit Committee and Board of Directors at least annually on information technology and cybersecurity matters, with more frequent updates as circumstances warrant. Such annual updates include significant findings or other information from internal or external evaluations. The Audit Committee is apprised annually on emerging risks to the Company, including education on cybersecurity-related matters as needed. CSX has a cybersecurity expert on the Board and its Audit Committee to provide expanded oversight of the Company’s cybersecurity and technology systems.

CSX 2025 Form 10-K p.15

CSX CORPORATION

PART I

The Company’s properties primarily consist of track and its related infrastructure, locomotives, and freight cars and equipment. These categories and the geography of the network are described below.

Track and Infrastructure

Serving 26 states, the District of Columbia, and the Canadian provinces of Ontario and Quebec, the CSXT rail network serves, among other markets, New York, Philadelphia and Boston in the Northeast and Mid-Atlantic, the southeast markets of Atlanta, Miami and New Orleans, and the midwestern markets of St. Louis, Columbus and Chicago.

CSXT’s track structure includes mainline track, which connects terminals and yards, track within terminals and switching yards, sidings used for passing trains, track connecting CSXT's track to customer locations and turnouts that divert trains from one track to another. Total track miles, which reflect the size of CSXT’s network that connects markets, customers and western railroads, are greater than CSXT’s approximately 20,000 route miles. At December 2025, the breakdown of track miles was as follows:

In addition to its physical track structure, the Company operates numerous yards and terminals for rail and intermodal service. These serve as points of connectivity between the Company and its local customers and as sorting facilities where railcars and intermodal containers are received, classed for destination and placed onto outbound trains, or arrive and are delivered to the customer. The Company’s largest yards and terminals based on 2025 volume (number of railcars or intermodal containers processed) are listed below.

CSX 2025 Form 10-K p.16

CSX CORPORATION

PART I

Network Geography

CSXT’s operations are primarily focused on four major transportation networks and corridors that are defined geographically and by commodity flows below.

Interstate 90 (I-90) Corridor – This CSXT corridor links Chicago and the Midwest to metropolitan areas in New York and New England. This route, also known as the “waterlevel route,” has minimal hills and grades and nearly all of it has two main tracks (referred to as double track). These engineering attributes permit the corridor to support high-speed service across intermodal, automotive and other merchandise commodities. This corridor is a primary route for import traffic coming from the far east through western ports moving eastward across the country, through Chicago and into the population centers in the Northeast. The I-90 Corridor is also a critical link between ports in New York, New Jersey, and Pennsylvania and consumption markets in the Midwest. This route carries goods from all three of the Company’s major rail markets – merchandise, intermodal and coal.

Interstate 95 (I-95) Corridor – The CSXT I-95 Corridor connects Charleston, Jacksonville, Miami and many other cities throughout the Southeast with the heavily populated mid-Atlantic and northeastern cities of Baltimore, Philadelphia and New York. CSXT primarily transports food and consumer products, as well as metals and chemicals along this line. It is the leading rail corridor along the eastern seaboard south of the District of Columbia and provides access to major eastern ports.

Southeastern Corridor – This critical part of the network runs between CSXT’s western gateways of Chicago, St. Louis and Memphis through the cities of Nashville, Birmingham, and Atlanta and markets in the Southeast. The Southeastern Corridor is the premier rail route connecting these key cities, gateways, and markets and positions CSXT to efficiently handle projected traffic volumes of intermodal, automotive and general merchandise traffic.

Coal Network – The CSXT coal network connects the coal mining operations in the Appalachian mountain region and Illinois basin with industrial areas in the Southeast, Northeast and Mid-Atlantic, as well as many river, lake, and deep water port facilities. The domestic coal market has declined significantly over the last decade and export coal remains subject to volatility. CSXT’s coal network remains well positioned to supply utility markets in both the Northeast and Southeast and to transport coal shipments for export outside of the U.S. Most of the export coal the Company transports is used for steelmaking, while the majority of domestic coal the Company ships is used for electricity generation.

See the following page for a map of the CSX Rail Network. Also included on the map, "CSX Operating Agreement" indicates areas within which CSX can operate through trackage rights beyond the CSX network.

CSX 2025 Form 10-K p.17

CSX CORPORATION

PART I

CSX Rail Network

CSX 2025 Form 10-K p.18

CSX CORPORATION

PART I

Locomotives

As of December 2025, CSXT owns more than 3,400 locomotives. From time to time, the Company also short-term leases locomotives based on business needs. Freight locomotives are used primarily to pull trains while switching locomotives are used in yards. Auxiliary units are typically used to provide extra traction for heavy trains in hilly terrain. Of owned locomotives, approximately 70% were in active service as of December 31, 2025, and the remainder were in storage to be utilized as needed. Storing locomotives and equipment allows the Company to quickly adjust its active fleet based on demand and other factors while avoiding delays due to supply limitations or excessive lead times to acquire additional equipment. As of December 2025, CSXT’s fleet of owned locomotives consisted of the following types:

Equipment

The Company owns or long-term leases rail equipment, including several types of freight cars and intermodal containers. Of total owned and long-term leased equipment, approximately 86% was in active service as of December 31, 2025, and the remainder were in storage to be utilized as needed. As of December 2025, the Company’s owned and long-term leased equipment consisted of the following:

At any time, approximately two-thirds of the railcars on the CSXT system are not owned or leased by the Company. Examples of these include railcars owned by other railroads (which are utilized by CSXT), shipper-furnished or private cars (which are generally used only in that shipper’s service), multi-level railcars used to transport automobiles (which are shared between railroads) and double-stack railcars, or well cars (which are industry pooled), that allow for two intermodal containers to be loaded one above the other.

CSX 2025 Form 10-K p.19

CSX CORPORATION

PART I

The Company’s revenue-generating equipment, either owned or long-term leased, primarily consists of freight cars and containers as described below.

Gondolas – Support CSXT’s metals markets and provide transport for woodchips and other bulk commodities. Some gondolas are equipped with special hoods for protecting products like coil and sheet steel.

Multi-level flat cars – Transport finished automobiles and are differentiated by the number of levels: bi-levels for large vehicles such as pickup trucks and SUVs and tri-levels for sedans and smaller automobiles.

Covered hoppers – Have a permanent roof and are segregated based upon commodity density. Lighter bulk commodities such as grain, fertilizer, flour, salt, sugar, clay and lime are shipped in large cars called jumbo covered hoppers. Heavier commodities like cement, ground limestone and industrial sand are shipped in small cube covered hoppers.

Open-top hoppers – Transport heavy dry bulk commodities such as coal, coke, stone, sand, ores and gravel that are resistant to weather conditions.

Box cars – Include a variety of tonnages, sizes, door configurations and heights to accommodate a wide range of finished products, including paper, auto parts, appliances and building materials. Insulated box cars deliver food products, canned goods, beer and wine.

Flat cars – Used for shipping intermodal containers and trailers or bulk and finished goods, such as lumber, pipe, plywood, drywall and pulpwood.

Other cars – Primarily slab steel cars.

Containers – Weather-proof boxes used for bulk shipment of freight, primarily in intermodal service.

For further details, please refer to Note 8. Commitments and Contingencies of this annual report on Form 10-K.

Not Applicable

CSX 2025 Form 10-K p.20

CSX CORPORATION

PART I

Executive Officers of the Registrant

Executive officers of the Company are elected by the CSX Board of Directors and generally hold office until the next annual election of officers. There are no family relationships or any arrangement or understanding between any officer and any other person pursuant to which such officer was elected. As of the date of this filing, the executive officers’ names, ages and business experience are:

CSX 2025 Form 10-K p.21

CSX CORPORATION

PART I

CSX 2025 Form 10-K p.22

CSX CORPORATION

PART II

Market Information

CSX’s common stock is listed on the Nasdaq Global Select Market, which is its principal trading market, and is traded over-the-counter and on exchanges nationwide. The official trading symbol is “CSX.”

Description of Common and Preferred Stock

A total of 5.4 billion shares of common stock are authorized, of which 1,859,740,714 shares were outstanding as of December 31, 2025. Each share is entitled to one vote in all matters requiring a vote of shareholders. There are no preemptive rights, which are privileges extended to select shareholders that would allow them to purchase additional shares before other members of the general public in the event of an offering. At January 31, 2026, the latest practicable date that is closest to the filing date, there were 19,430 common stock shareholders of record. The weighted average of common shares outstanding, which was used in the calculation of diluted earnings per share, was 1,873 million as of December 31, 2025 (see Note 2, Earnings Per Share). A total of 25 million shares of preferred stock is authorized, none of which is currently outstanding.

The following table sets forth, for the quarters indicated, the dividends declared on CSX common stock.

CSX 2025 Form 10-K p.23

CSX CORPORATION

PART II

Stock Performance Graph

The cumulative shareholder returns, assuming reinvestment of dividends, on $100 invested at December 31, 2020 are illustrated on the graph below. The Company references the Standard & Poor's 500 Stock Index (“S&P 500 ®”), and the Dow Jones U.S. Transportation Average Index ("DJT"), which provide comparisons to a broad-based market index and other companies in the transportation industry. This performance graph shall not be deemed "soliciting material" or to be "filed" with the SEC for purposes of Section 18 of the Exchange Act, or otherwise subject to liabilities under that Section, and shall not be deemed to be incorporated by reference into any filing of CSX Corp. under the Securities Act of 1933, as amended, or the Exchange Act.

CSX 2025 Form 10-K p.24

CSX CORPORATION

PART II

CSX Purchases of Equity Securities

The Company continues to repurchase shares under the $5 billion share repurchase program approved in October 2023. Total repurchase authority remaining as of December 31, 2025 was $1.2 billion. For more information about share repurchases, see Note 2, Earnings Per Share. Share repurchase activity of $112 million for the fourth quarter 2025 is shown in the table below. Amounts exclude the impact of excise tax on net share repurchases imposed as part of the Inflation Reduction Act of 2022.

CSX 2025 Form 10-K p.25

CSX CORPORATION

PART II

TERMS USED BY CSX

When used in this report, unless otherwise indicated by the context, these terms are used to mean the following:

Car hire - A charge paid by one railroad for its use of cars belonging to another railroad or car owner.

Class I freight railroad - One of the largest line haul freight railroads as determined based on operating revenue; the exact revenue required to be in each class is periodically adjusted for inflation by the Surface Transportation Board. Smaller railroads are classified as Class II or Class III.

Common carrier mandate - A federal mandate that requires U.S. railroads to accommodate reasonable requests from shippers to carry any freight, including hazardous materials.

Demurrage - A charge assessed by railroads for the use of rail cars by shippers or receivers of freight beyond a specified free time.

Department of Transportation ("DOT") - A U.S. government agency with jurisdiction over matters of all modes of transportation.

Depreciation study - Conducted by a third-party specialist and analyzed by management, a periodic statistical analysis of fixed asset service lives, salvage values, accumulated depreciation, and other factors for group assets along with a comparison of similar asset groups at other companies.

Double-stack - Stacking containers two-high on specially equipped cars.

Economic Profit (CSX Cash Earnings or CCE) - A non-GAAP measure designed to incentivize strategic investments earning more than the required return. Economic Profit is calculated as CSX’s gross cash earnings (after-tax adjusted EBITDA) minus the capital charge (long-term average cost of capital) on gross operating assets.

Environmental Protection Agency (“EPA”) - A U.S. government agency that has regulatory authority with respect to environmental law.

Federal Railroad Administration ("FRA") - The branch of the DOT that is responsible for developing and enforcing railroad safety regulations, including safety standards for rail infrastructure and equipment.

Free cash flow ("FCF") - The calculation of a non-GAAP measure by using net cash provided by operating activities and adjusting for property additions and certain other investing activities. Free cash flow is a measure of cash available for paying dividends, share repurchases and principal reduction on outstanding debt.

Group-life depreciation - A type of depreciation in which assets with similar useful lives and characteristics are aggregated into groups. Instead of calculating depreciation for individual assets, depreciation is calculated as a whole for each group.

Incidental charges - Charges for switching, demurrage, storage, etc.

Intermodal - A flexible way of transporting freight over highway, rail and water without being removed from the original transportation equipment, namely a container or trailer.

CSX 2025 Form 10-K p.26

CSX CORPORATION

PART II

Mainline - The main track thoroughfare, exclusive of terminals, yards, sidings and turnouts.

Pipeline and Hazardous Materials Safety Administration (“PHMSA”) - An agency within the DOT that, together with the FRA, has broad jurisdiction over railroad operating standards and practices, including hazardous materials requirements.

Positive Train Control ("PTC") - An interoperable train control system designed to prevent train-to-train collisions, over-speed derailments, incursions into established work-zone limits, and train diversions onto another set of tracks.

Revenue adequacy - The achievement of a rate of return on investment over time at least equal to the industry cost of investment capital, as measured by the STB.

Shipper - A customer shipping freight via rail.

Siding - Track adjacent to the mainline used for passing trains.

Staggers Act of 1980 - Congressional law that significantly deregulated the rail industry, replacing the regulatory structure in existence since the 1887 Interstate Commerce Act. Where previously rates were controlled by the Interstate Commerce Commission, the Staggers Act allowed railroads to establish their own rates for shipments, enhancing their ability to compete with other modes of transportation.

Surface Transportation Board ("STB") - An independent governmental adjudicatory body administratively housed within the DOT, responsible for the economic regulation of interstate surface transportation within the United States.

Switching - Putting cars in a specific order, placing cars for loading, retrieving empty cars or adding or removing cars from a train at an intermediate point.

Terminal - A facility, typically owned by a railroad, for the handling of freight and for the breaking up, making up, forwarding and servicing of trains.

Transportation Security Administration (“TSA”) - A component of the Department of Homeland Security with broad authority over railroad operating practices that may have homeland security implications.

TTX Company ("TTX") - A company that provides its owner-railroads with standardized fleets of intermodal, automotive and general use railcars at time and mileage rates. CSX owns about 20 percent of TTX's common stock, and the remainder is owned by the other leading North American railroads and their affiliates.

Turnout - A track that diverts trains from one track to another.

Yard - A system of tracks, other than main tracks and sidings, used for making up trains, storing cars and other purposes.

CSX 2025 Form 10-K p.27

CSX CORPORATION

PART II

2025 HIGHLIGHTS

• Revenue of $14.1 billion decreased $448 million or 3% versus the prior year.

• Expenses of $9.6 billion increased $276 million or 3% year over year.

• Operating income of $4.5 billion decreased $724 million or 14% year over year.

• Operating margin of 32.1% decreased 400 basis points from 36.1%.

• Earnings per diluted share of $1.54 decreased $0.25 or 14% year over year.

RESULTS OF OPERATIONS

The following section generally discusses the Company's results of operations and financial condition for the year ended December 31, 2025, compared to the year ended December 31, 2024. A discussion regarding results of operations and financial condition for the year ended December 31, 2024, compared to the year ended December 31, 2023, can be found in Part II, Item 7 of CSX's Annual Report on Form 10-K for the year ended 2024, filed with the Securities and Exchange Commission on February 27, 2025.

This discussion should be read in conjunction with the Consolidated Financial Statements and the related notes that appear elsewhere in this Form 10-K.

2025 vs. 2024 Results of Operations

Showing the first 8K of 74K characters. Open the full section

Changes in interest rates may impact the cost of future long-term debt issued by the Company, and as a result, represent interest rate risk to the Company. In an effort to manage this risk, CSX may use certain financial instruments such as interest rate forward contracts. The following information, together with information included in Note 10, Debt and Credit Agreements, and Note 13, Fair Value Measurements, describes the key aspects of such contracts and the related market risk to CSX.

Changes in interest rates could impact the fair value of the Company's fixed-to-floating interest rate swaps. In 2025, CSX entered into two fixed-to-floating interest rate swaps classified as fair value hedges. The swaps are designed to hedge 10 years of interest rate risk associated with market fluctuations attributable to Secured Overnight Financing Rate ("SOFR") on a cumulative $250 million of fixed rate outstanding notes which are due in 2055. As of December 31, 2025, the fair value of these swaps was a $9 million asset. In 2023, CSX entered into two separate fixed-to-floating interest rate swaps classified as fair value hedges. The swaps are designed to hedge 10 years of interest rate risk associated with market fluctuations attributable to the SOFR on a cumulative $250 million of fixed rate outstanding notes which are due in 2033. As of December 31, 2025, the cumulative fair value of these swaps was a $14 million asset. In 2022, CSX entered into five separate fixed-to-floating interest rate swaps classified as fair value hedges. The swaps are designed to hedge 10 years of interest rate risk associated with market fluctuations attributable to SOFR on a cumulative $800 million of fixed rate outstanding notes, which are due between 2036 and 2040. As of December 31, 2025, the cumulative fair value of these swaps was a $87 million liability. As of December 31, 2025, the potential change in fair value of fixed-to-floating interest rate swaps resulting from a hypothetical 10% change in interest rates would not be material.

Changes in interest rates no longer impact the fair value of the Company's forward starting interest rate swaps because they were fully settled in 2024.

As of December 31, 2025, CSX had no floating rate notes outstanding. However, changes in interest rates could impact the fair value (but not the carrying value) of the Company's fixed rate long-term debt. The potential decrease in fair value of the Company's fixed rate long-term debt resulting from a hypothetical 10% increase in U.S. Treasury rates, or approximately 43 basis points, is estimated to be $757 million as of December 31, 2025, and $756 million as of December 31, 2024. The underlying fair values of the Company's long-term debt were estimated based on quoted market prices or on the current rates offered for debt with similar terms and maturities.

CSX 2025 Form 10-K p.49

CSX CORPORATION

PART II

Item 8. Financial Statements and Supplementary Data

CSX 2025 Form 10-K p.50

CSX CORPORATION

PART II

Item 8. Financial Statements and Supplementary Data

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors of CSX Corporation

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of CSX Corporation (the Company) as of December 31, 2025 and 2024, the related consolidated income statements, comprehensive income statements, statements of changes in shareholders’ equity and cash flow statements for each of the three years in the period ended December 31, 2025 and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at 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 U.S. generally accepted accounting principles.

We also have 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 issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), and our report dated February 12, 2026 expressed an unqualified opinion thereon.

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 b

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NOTE 17. Segment Reporting and Significant Expenses, continued

The table below presents information about the Company's significant expenses and the required reportable segment reconciliations for the years ended 2025, 2024 and 2023.

(a) Trucking revenue is comprised of revenue from Quality Carriers. Rail revenue represents revenue attributed to all CSX entities other than the trucking company, Quality Carriers.

(b) Trucking expenses include labor and fringe, purchased services and other, depreciation and amortization, fuel, equipment and other rents, and gains/losses on property dispositions from the operations of Quality Carriers. Rail expenses represent expenses attributable to all CSX entities other than the trucking company, Quality Carriers. Trucking expenses include $164 million and $108 million impairment charges related to Quality Carriers' goodwill in 2025 and 2024, respectively. See additional information in Note 18, Goodwill and Other Intangible Assets.

CSX 2025 Form 10-K p.115

CSX CORPORATION

PART II

Item 8. Financial Statements and Supplementary Data

NOTE 17. Segment Reporting and Significant Expenses, continued

Capital expenditures made by the rail segment were $2.9 billion, $2.5 billion, and $2.2 billion for 2025, 2024 and 2023, respectively. Capital expenditures include $470 million in 2025 and $50 million in 2024 related to rebuilding the Blue Ridge subdivision as a result of impacts from Hurricane Helene. The total of the rail segment's reportable assets were $43.5 billion, $42.6 billion, and $42.0 billion as of December 31, 2025, 2024 and 2023, respectively, out of total consolidated assets of $43.7 billion, $42.8 billion, and $42.2 billion for the respective years. The remaining non-rail assets are comprised of assets held by the trucking operating segment.

NOTE 18. Goodwill and Other Intangible Assets

The following table presents goodwill and other intangible asset balances and adjustments to those balances for the years ended December 31, 2025, and 2024. There is no remaining goodwill attributed to the Company's trucking operating segment as of December 31, 2025, compared to goodwill of $159 million, and $245 million as of December 2024 and 2023, respectively. The goodwill balance attributed to the rail segment was $80 million at the end of each of the years shown. All intangible assets are attributed to the trucking operating segment.

Additions

During 2025 and 2024 the Company's trucking operating segment, which is solely comprised of Quality Carriers, completed several acquisitions that were immaterial individually and in aggregate. The acquisitions resulted in the addition of $5 million and $22 million of goodwill in the trucking operating segment in 2025 and 2024, respectively, which were subsequently impaired. Other intangible assets recognized as part of these acquisitions were $5 million and $25 million in 2025 and 2024, respectively.

Amortization

The Company's intangible assets balance primarily relates to intangibles recognized as part of the acquisition of Quality Carriers in 2021. Intangible assets recognized from the acquisition of $180 million consist of $150 million of customer relationships and $30 million of trade names that will be amortized over a weighted-average period of 20 years and 15 years, respectively.

CSX 2025 Form 10-K p.116

CSX CORPORATION

PART II

Item 8. Financial Statements and Supplementary Data

NOTE 18. Goodwill and Other Intangible Assets, continued

2024 Impairment

The Company performed a quantitative assessment, which used a combination of the income and market approaches, as of October 1, 2024, to estimate the fair value of Quality Carriers. The income approach used a discounted cash flow model with significant assumptions for future revenue growth, EBITDA margin, capital expenditures and discount rate. The market approaches used valuation and transaction multiples for selected guideline public companies. Based on the quantitative assessment, CSX concluded the fair value of Quality Carriers did not exceed the carrying value. As a result, a $108 million impairment charge in the trucking operating segment was recorded in operating expense in the accompanying consolidated income statements. These inputs are classified as Level 3 measurements within the fair value hierarchy.

The impairment was driven by lower than previously expected financial performance projections, which were updated during the Company's annual financial plan process that takes place in the fourth quarter. Updates to longer-term projections reflect the effects of a trucking recession that has extended beyond previous expectations as well as higher discount rates.

2025 Impairment

During third quarter 2025, the Company determined that the extended trucking market recession, ongoing economic uncertainty and lower than previously expected financial performance triggered the need to perform an interim impairment assessment for goodwill associated with Quality Carriers. The Company performed a quantitative assessment, which used a combination of the income and market approaches, as of August 1, 2025, to estimate the fair value of Quality Carriers. The income approach used a discounted cash flow model with significant assumptions for future revenue growth, EBITDA margin, capital expenditures and discount rate. The market approach used revenue and EBITDA multiples for selected guideline public companies. These inputs are classified as Level 3 measurements within the fair value hierarchy. Based on the quantitative assessment, CSX concluded the fair value of Quality Carriers did not exceed its carrying value. As a result, all of the remaining Quality Carriers goodwill in the trucking operating segment was determined to be fully impaired and a $164 million impairment charge was recorded in operating expense in the accompanying consolidated income statements.

Additional Information

In addition to the quantitative assessment of goodwill, CSX evaluated the recoverability of the long-lived assets on the Quality Carriers reporting unit in the trucking operating segment in 2025 and 2024. Based on these assessments, CSX concluded the carrying values of these assets were recoverable and no impairment was recorded.

The Company performed a qualitative assessment over the goodwill of the reporting units in the rail segment during fourth quarter 2025 and 2024. No impairment was recorded as a result of those assessments.

CSX 2025 Form 10-K p.117

CSX CORPORATION

PART II

None

Evaluation of Disclosure Controls and Procedures

As of December 31, 2025, under the supervision and with the participation of CSX's Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), management has evaluated the effectiveness of the design and operation of the Company's disclosure controls and procedures. Based on that evaluation, the CEO and CFO concluded that, as of December 31, 2025, the Company's disclosure controls and procedures were effective at the reasonable assurance level in timely alerting them to material information required to be included in CSX’s periodic SEC reports.

Management's Report on Internal Control over Financial Reporting

CSX’s management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). Under the supervision and with the participation of the management of CSX, including CSX’s CEO and CFO, CSX conducted an evaluation of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2025, based on the 2013 framework in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission, which is also referred to as COSO. Based on that evaluation, management of CSX concluded that the Company’s internal control over financial reporting was effective as of December 31, 2025. Management's assessment of the effectiveness of internal control over financial reporting is expressed at the level of reasonable assurance because a control system, no matter how well designed and operated, can provide only reasonable, but not absolute, assurance that the control system's objectives will be met.

The Company’s internal control over financial reporting as of December 31, 2025, has been audited by Ernst & Young LLP, an independent registered public accounting firm, as stated in their report which is included elsewhere herein.

CSX 2025 Form 10-K p.118

CSX CORPORATION

PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and the Board of Directors of CSX Corporation

Opinion on Internal Control Over Financial Reporting

We have audited CSX Corporation’s internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, CSX Corporation (the Company) maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 2025 and 2024, the related consolidated income statements, comprehensive income statements, statements of changes in shareholders' equity and cash flow statements for each of the three years in the period ended December 31, 2025, and the related notes and our report dated February 12, 2026, expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

CSX 2025 Form 10-K p.119

CSX CORPORATION

PART II

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Jacksonville, Florida

February 12, 2026

CSX 2025 Form 10-K p.120

CSX CORPORATION

PART II

Changes in Internal Control over Financial Reporting

There were no material changes in the Company’s internal control over financial reporting.

During the fourth quarter of 2025, none of the Company's directors or officers adopted or terminated any "Rule 10b5-1 trading arrangement" or any "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408 of Regulation S-K.

Not applicable.

PART III

The Company maintains insider trading policies and procedures governing the purchase, sale, and/or other dispositions of the Company's securities by directors, officers, and employees, as well as the Company itself, that the Company believes are reasonably designed to promote compliance with insider trading laws, rules, and regulations, as well as listing standards applicable to the Company. A copy of the Company's insider trading policy is filed as Exhibit 19 to this Form 10-K.

In accordance with Instruction G(3) of Form 10-K, the remaining information required by this item is incorporated herein by reference to the Proxy Statement. The Proxy Statement will be filed no later than April 30, 2026, with respect to the 2026 annual meeting of shareholders, except for the information regarding the executive officers of the Company. Information regarding executive officers is included in Part I of this report under the caption "Executive Officers of the Registrant."

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

In accordance with Instruction G(3) of Form 10-K, the information required by this Item is incorporated herein by reference to the Proxy Statement (see Item 10 above).

CSX 2025 Form 10-K p.121

CSX CORPORATION

PART IV

(a)(1) Financial Statements

(2) Financial Statement Schedules

The information required by Schedule II, Valuation and Qualifying Accounts, is included in Note 5 to the Consolidated Financial Statements, Casualty, Environmental and Other Reserves. All other financial statement schedules are not applicable.

(3) Exhibits

See exhibits listed under part (b) below.

(b) The documents listed below are being filed or have previously been filed on behalf of CSX and are incorporated herein by reference from the documents indicated and made a part hereof. Exhibits not previously filed are filed herewith. Pursuant to Regulation S-K, Item 601(b)(4)(iii), instruments that define the rights of holders of the Registrant's long-term debt securities, where the long-term debt securities authorized under each such instrument do not exceed 10% of the Registrant's total assets, have been omitted and will be furnished to the Commission upon request.

CSX 2025 Form 10-K p.122

CSX CORPORATION

PART IV

CSX 2025 Form 10-K p.123

CSX CORPORATION

PART IV

CSX 2025 Form 10-K p.124

CSX CORPORATION

PART IV

CSX 2025 Form 10-K p.125

CSX CORPORATION

PART IV

CSX 2025 Form 10-K p.126

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.

CSX CORPORATION

(Registrant)

By: /s/ ANGELA C. WILLIAMS

Angela C. Williams

Vice President and Chief Accounting Officer

(Principal Accounting Officer)

Dated: February 12, 2026

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities indicated on February 12, 2026.

CSX 2025 Form 10-K p.127

SIGNATURES

CSX 2025 Form 10-K p.128