Phillips 66: 10-K Risk Factor Changes

Our basis for approving large-scale capital-intensive projects, such as the recent conversion of our San Francisco Refinery into the Rodeo Complex, is the expectation that it will deliver an acceptable rate of return on the capital invested. We base these forecasted project economics on our best estimate of future market conditions including the regulatory and operating environment. Most large-scale projects take several years to complete. During this multi-year period, the political and regulatory environments or other market conditions can change from those we anticipated, and these changes could be significant. Supply chain disruptions may also delay projects or increase costs. Accordingly, we may not be able to realize our expected returns from a large investment in a capital project, and this could negatively impact our results of operations, cash flows and our return on capital employed. 30 30 30 30 30 30

Our basis for approving large-scale capital-intensive projects, such as the conversion of our San Francisco refinery into a renewable fuels facility, is the expectation that it will deliver an acceptable rate of return on the capital invested. We base these forecasted project economics on our best estimate of future market conditions including the regulatory and operating environment. Most large-scale projects take several years to complete. During this multiyear period, the political and regulatory environments or other market conditions can change from those we anticipate, and these changes could be significant. Supply chain disruptions may also delay projects or increase costs. Accordingly, we may not be able to realize our expected returns from a large investment in a capital project, and this could negatively impact our results of operations, cash flows and our return on capital employed.

Developments aimed at reducing GHG emissions may decrease the demand or increase the cost for our petroleum-based fuels. Societal attitudes toward these products and their relationship to the environment may significantly affect our effectiveness in marketing our products. Government efforts to steer the public toward non-petroleum-based fuel dependent modes of transportation may foster a negative perception toward petroleum products or increase costs of our products, thus affecting the public’s attitude toward our major products. Advanced technology and increased use of vehicles that do not use petroleum-based transportation fuels or that are powered by hybrid engines would reduce demand for the motor fuel we produce. We may also incur increased production costs, which we may not be able to pass along to our customers. Additionally, renewable fuels, alternative energy mandates and energy conservation efforts could reduce demand for refined petroleum products. Tax incentives and other subsidies can make renewable fuels and alternative energy more competitive with refined petroleum products than they otherwise might be, which may reduce refined petroleum product margins and hinder the ability of refined petroleum products to compete with renewable fuels. The competition for renewable fuels feedstocks may also increase, negatively impacting the availability of such feedstocks or increasing their cost. These developments could potentially have a material adverse effect on our business, financial condition, results of operations and cash flows.

Developments aimed at reducing GHG emissions may decrease the demand or increase the cost for our transportation fuels. Societal attitudes toward these products and their relationship to the environment may significantly affect our effectiveness in marketing our products. Government efforts to steer the public toward non-petroleum-based fuel dependent modes of transportation may foster a negative perception toward transportation fuels or increase costs of our products, thus affecting the public’s attitude toward our major products. Advanced technology and increased use of vehicles that do not use petroleum-based transportation fuels or that are powered by hybrid engines would reduce demand for the motor fuel we produce. We may also incur increased production costs, which we may not be able to pass along to our customers. Additionally, renewable fuels, alternative energy mandates and energy conservation efforts could reduce demand for refined petroleum products. Tax incentives and other subsidies can make renewable fuels and alternative energy more competitive with refined petroleum products than they otherwise might be, which may reduce refined petroleum product margins and hinder the ability of refined petroleum products to compete with renewable fuels. The competition for renewable fuels feedstocks may also increase, negatively impacting the availability of such feedstocks or increasing their cost. These developments could potentially have a material adverse effect on our business, financial condition, results of operations and cash flows.

Our credit ratings could be lowered or withdrawn entirely by a rating agency if, in its judgment, the circumstances warrant. If a rating agency were to downgrade our rating below investment grade, our borrowing costs would increase, and our funding sources could decrease. This could require us to provide collateral, or other forms of security, which would increase our costs and restrict operational and financial flexibility. In addition, failure by Phillips 66 to maintain an investment grade rating could affect its business relationships with suppliers and operating partners. For example, Phillips 66’s agreement with Chevron Corporation (Chevron) regarding CPChem permits Chevron to buy Phillips 66’s 50% interest in CPChem for fair market value if Phillips 66 experiences a change in control or if both Standard & Poor’s Financial Services LLC and Moody’s Investors Service, Inc. lower their credit ratings below investment grade and the credit rating from either rating agency remains below investment grade for 365 days thereafter, with fair market value determined by agreement or by nationally recognized investment banks. As a result of these factors, a downgrade of credit ratings could have a material adverse impact on Phillips 66’s future operations and financial position. 40 40 40 40 40 40

Our credit ratings could be lowered or withdrawn entirely by a rating agency if, in its judgment, the circumstances warrant. If a rating agency were to downgrade our rating below investment grade, our borrowing costs would increase, and our funding sources could decrease. This could require us to provide collateral, or other forms of security, which would increase our costs and restrict operational and financial flexibility. In addition, a failure by Phillips 66 to maintain an investment grade rating could affect its business relationships with suppliers and operating partners. For example, Phillips 66’s agreement with Chevron Corporation (Chevron) regarding CPChem permits Chevron to buy Phillips 66’s 50% interest in CPChem for fair market value if Phillips 66 experiences a change in control or if both Standard & Poor’s Financial Services LLC and Moody’s Investors Service, Inc. lower their credit ratings below investment grade and the credit rating from either rating agency remains below investment grade for 365 days thereafter, with fair market value determined by agreement or by nationally recognized investment banks. As a result of these factors, a downgrade of credit ratings could have a material adverse impact on Phillips 66’s future operations and financial position. 34 34 34 34 34 34 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements

Actions of federal, state, local and international governments through legislation or regulation, executive order, permit or other review of infrastructure or facility development, and commercial restrictions could delay projects, increase costs, limit development, or otherwise reduce our profitability both in the United States and abroad. Any such actions may affect many aspects of our operations, including: •Establishing maximum margins that can be earned on sales of motor fuels or imposing financial penalties on profits earned above established maximum margins. •Limiting or prohibiting our ability to undertake turnaround or maintenance activities, or to cease operations at our refineries. •Requiring permits or other approvals that may impose unforeseen or unduly burdensome conditions or potentially cause delays in our operations. •Further limiting or prohibiting construction or other activities in environmentally sensitive or other areas. •Requiring increased capital costs to construct, maintain or upgrade equipment, facilities or infrastructure. •Restricting the locations where we may construct facilities or requiring the relocation of facilities. 31 31 31 31 31 31 For example, in March 2023, the California legislature adopted Senate Bill No. 2 (such statute, together with any regulations contemplated or issued thereunder, SBx 1-2), which, among other things, (i) authorizes the establishment of a maximum gross gasoline refining margin (maximum margin) and the imposition of a financial penalty for profits above the maximum margin, (ii) significantly expands reporting obligations relating to the maintenance and business of our California facilities, which includes reporting requirements to the California Energy Commission (CEC) for all participants in the transportation fuels industry supply chain in California, (iii) creates the Division of Petroleum Market Oversight within the CEC to analyze the data provided under SBx 1-2, and (iv) authorizes the CEC to regulate the timing and other aspects of facility turnaround and other maintenance activities in certain instances. The CEC is currently in rulemaking with respect to various aspects of SBx 1-2, and the potential implementation of a financial penalty or any restrictions or delays on our ability to undertake turnaround or other maintenance activities creates uncertainty due to the potential adverse effects on our refining, marketing, renewable and midstream operations in California, which may be material to our results of operations, financial condition, profitability and cash flows. We anticipate that other jurisdictions may contemplate similarly focused legislation or actions. The timing and impacts of SBx 1-2 and any other similarly focused legislation or actions are subject to considerable uncertainty due to a number of factors, including technological and economic feasibility, legal challenges, and potential changes in law, regulation, or policy, and it is not currently possible to predict the ultimate effects of these matters and developments, but they may be significant. For example, adverse effects on the financial performance of our operations in the state of California or the useful lives of the assets related to such operations may result in the recognition of material asset impairment charges and asset retirement obligations. Furthermore, the U.S. government can prevent or restrict us from doing business in foreign countries and from doing business with entities affiliated with foreign governments, which can include state oil companies and U.S. subsidiaries of those companies. The Office of Foreign Assets Control (OFAC) of the U.S. Department of the Treasury administers and enforces economic and trade sanctions based on U.S. foreign policy and national security matters. The effect of any such OFAC sanctions could disrupt transactions with or operations involving entities affiliated with sanctioned countries, and could limit our ability to obtain optimum crude slates and other feedstocks and effectively distribute refined products. We may face other regulatory changes in the U.S. including, but not limited to, the enactment of tax law changes that adversely affect our industry, tariffs on imported material, components and feedstocks and retaliatory tariffs imposed by other countries on U.S. made goods, new emissions standards, restrictive flaring regulations, and more stringent requirements for environmental impact studies and reviews. Hostilities in the Middle East, Eastern Europe or elsewhere or the occurrence or threat of future terrorist attacks could adversely affect the economies of the U.S. and other countries. Other political and economic risks include global health crises; financial market turmoil; economic volatility and global economic slowdown; currency exchange rate fluctuations; short-term and long-term inflationary pressures; rising or prolonged periods of high interest rates; import or export restrictions and changes in trade regulations; supply chain disruptions; civil unrest and other political risks; limitations in the availability of labor to develop, staff and manage operations; and potentially adverse tax developments. If any of these events occur, our businesses and results of operations may be adversely affected.

Actions of federal, state, local and international governments through legislation or regulation, executive order, permit or other review of infrastructure or facility development, and commercial restrictions could delay projects, increase costs, limit development, or otherwise reduce our profitability both in the United States and abroad. Any such actions may affect many aspects of our operations, including: •Establishing maximum margins that can be earned on sales of motor fuels or imposing financial penalties on profits earned above established maximum margins. •Limiting or prohibiting our ability to undertake turnaround or other maintenance activities at our refineries. 25 25 25 25 25 25 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements •Requiring permits or other approvals that may impose unforeseen or unduly burdensome conditions or potentially cause delays in our operations. •Further limiting or prohibiting construction or other activities in environmentally sensitive or other areas. •Requiring increased capital costs to construct, maintain or upgrade equipment, facilities or infrastructure. •Restricting the locations where we may construct facilities or requiring the relocation of facilities. For example, in March 2023, the California legislature adopted Senate Bill No. 2 (such statute, together with any regulations contemplated or issued thereunder, SBx 1-2), which, among other things, (i) authorizes the establishment of a maximum gross gasoline refining margin (maximum margin) and the imposition of a financial penalty for profits above the maximum margin, (ii) significantly expands reporting obligations relating to the maintenance and business of our California refineries, which includes reporting requirements to the California Energy Commission (CEC) for all participants in the petroleum industry supply chain in California, (iii) creates the Division of Petroleum Market Oversight within the CEC to analyze the data provided under SBx 1-2, and (iv) authorizes the CEC to regulate the timing and other aspects of refinery turnaround and other maintenance activities in certain instances. The CEC is currently in rulemaking with respect to various aspects of SBx 1-2, and the potential implementation of a financial penalty or any restrictions or delays on our ability to undertake turnaround or other maintenance activities creates uncertainty due to the potential adverse effects on our refining, marketing and midstream operations in California, which may be material to our results of operations, financial condition, profitability and cash flows. We anticipate that other jurisdictions may contemplate similarly focused legislation or actions. The ultimate timing and impacts of SBx 1-2 and any other similarly focused legislation or actions are subject to considerable uncertainty due to a number of factors, including technological and economic feasibility, legal challenges, and potential changes in law, regulation, or policy, and it is not currently possible to predict the ultimate effects of these matters and developments, but they may be significant. For example, adverse effects on the financial performance of our operations in the state of California or the useful lives of the assets related to such operations may result in the recognition of material asset impairment charges and asset retirement obligations. Furthermore, the U.S. government can prevent or restrict us from doing business in foreign countries and from doing business with entities affiliated with foreign governments, which can include state oil companies and U.S. subsidiaries of those companies. The Office of Foreign Assets Control (OFAC) of the U.S. Department of the Treasury administers and enforces economic and trade sanctions based on U.S. foreign policy and national security matters. The effect of any such OFAC sanctions could disrupt transactions with or operations involving entities affiliated with sanctioned countries, and could limit our ability to obtain optimum crude slates and other refinery feedstocks and effectively distribute refined petroleum products. We may face other regulatory changes in the U.S. including, but not limited to, the enactment of tax law changes that adversely affect our industry, new emissions standards, restrictive flaring regulations, and more stringent requirements for environmental impact studies and reviews. Hostilities in the Middle East, Russia or elsewhere or the occurrence or threat of future terrorist attacks could adversely affect the economies of the U.S. and other countries. Other political and economic risks include global health crises; financial market turmoil; economic volatility and global economic slowdown; currency exchange rate fluctuations; short-term and long-term inflationary pressures; rising or prolonged periods of high interest rates; import or export restrictions and changes in trade regulations; supply chain disruptions; civil unrest and other political risks; limitations in the availability of labor to develop, staff and manage operations; and potentially adverse tax developments. If any of these events occur, our businesses and results of operations may be adversely affected. 26 26 26 26 26 26 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements

In connection with our separation from ConocoPhillips in 2012, we entered into an Indemnification and Release Agreement and certain other agreements pursuant to which ConocoPhillips agreed to indemnify us for certain liabilities, and we agreed to indemnify ConocoPhillips for certain liabilities. Indemnities that we may be required to provide are not subject to any cap and may be significant. Third parties could also seek to hold us responsible for any of the liabilities that ConocoPhillips has agreed to retain. Further, the indemnity from ConocoPhillips may not be sufficient to protect us against the full amount of such liabilities, and ConocoPhillips may not be able to fully satisfy its indemnification obligations. Each of these risks could negatively affect our business, results of operations and financial condition. 41 41 41 41 41 41

In connection with our separation from ConocoPhillips in 2012, we entered into an Indemnification and Release Agreement and certain other agreements pursuant to which ConocoPhillips agreed to indemnify us for certain liabilities, and we agreed to indemnify ConocoPhillips for certain liabilities. Indemnities that we may be required to provide are not subject to any cap and may be significant. Third parties could also seek to hold us responsible for any of the liabilities that ConocoPhillips has agreed to retain. Further, the indemnity from ConocoPhillips may not be sufficient to protect us against the full amount of such liabilities, and ConocoPhillips may not be able to fully satisfy its indemnification obligations. Each of these risks could negatively affect our business, results of operations and financial condition. 35 35 35 35 35 35 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements

We and our affiliates have made and continue to make significant investments to meet market demand for our products and services, such as investments in midstream infrastructure and construction of new petrochemicals facilities. Similar investments have been made, and additional investments may be made in the future, by us, our competitors or by new entrants to the markets and industries we serve. The success of these investments largely depends on the realization of anticipated market demand, and these projects typically require significant development periods, during which time demand for our products or services may change, or additional investments by competitors may be made that could result in an overbuild of supply. Any of these or other competitive forces could materially adversely affect our results of operations, financial position or cash flows, as well as our return on capital employed.

We and our equity affiliates have made and continue to make significant investments to meet market demand for our products and services, such as investments in midstream infrastructure and construction of new petrochemicals facilities. Similar investments have been made, and additional investments may be made in the future, by us, our competitors or by new entrants to the markets and industries we serve. The success of these investments largely depends on the realization of anticipated market demand, and these projects typically require significant development periods, during which time demand for our products or services may change, or additional investments by competitors may be made that could result in an overbuild of supply. Any of these or other competitive forces could materially adversely affect our results of operations, financial position or cash flows, as well as our return on capital employed. 24 24 24 24 24 24 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements

There have been efforts in recent years aimed at the investment community, including investment advisors, sovereign wealth funds, public pension funds, universities, and other groups, to promote the divestment of fossil fuel companies, as well as to pressure lenders, insurers, and other financial services companies to limit or curtail activities with fossil fuel companies. If these or similar efforts are continued, the market price of our securities, our ability to access capital markets or insure our operations, and our cost of capital may be negatively impacted. Members of the investment community are also increasing their focus on environmental and social (E&S) matters, including practices related to GHG emissions, climate change, business resilience, diversity and inclusion, environmental justice and other E&S matters. As a result, we may face increasing pressure regarding our E&S disclosures and practices. Additionally, members of the investment community may screen companies such as ours for E&S performance before investing in our stock or participating in our financing activities. If we are unable to meet the E&S standards set by these investors, we may lose investors, our stock price may be negatively impacted, our access to capital markets and lenders may be curtailed, and our reputation may be negatively affected. Our efforts to accurately report on E&S-related issues expose us to operational, reputational, financial, legal, and other risks. Standards for tracking and reporting on E&S-related matters, including climate-related matters, have not been harmonized and continue to evolve. Processes and controls for reporting on E&S matters are subject to evolving and disparate standards of identification, measurement, and reporting on such metrics, including any climate change and E&S-related public company disclosure requirements adopted by the SEC or government agencies of other jurisdictions, and such standards may change over time, which could result in significant revisions to our current E&S practices and disclosures. 39 39 39 39 39 39

There have been efforts in recent years aimed at the investment community, including investment advisors, sovereign wealth funds, public pension funds, universities, and other groups, to promote the divestment of fossil fuel companies, as well as to pressure lenders, insurers, and other financial services companies to limit or curtail activities with fossil fuel companies. If these or similar efforts are continued, our stock price, our ability to access capital markets or insure our operations, and our cost of capital may be negatively impacted. Members of the investment community are also increasing their focus on environmental and social (E&S) matters, including practices related to GHG emissions, climate change, business resilience, diversity and inclusion, environmental justice and other E&S matters. As a result, we may face increasing pressure regarding our E&S disclosures and practices. Additionally, members of the investment community may screen companies such as ours for E&S performance before investing in our stock or participating in our financing activities. If we are unable to meet the E&S standards set by these investors, we may lose investors, our stock price may be negatively impacted, our access to capital markets and lenders may be curtailed, and our reputation may be negatively affected. Our efforts to accurately report on E&S-related issues expose us to operational, reputational, financial, legal, and other risks. Standards for tracking and reporting on E&S-related matters, including climate-related matters, have not been harmonized and continue to evolve. Processes and controls for reporting on E&S matters are subject to evolving and disparate standards of identification, measurement, and reporting on such metrics, including any climate change and E&S-related public company disclosure requirements adopted by the SEC, and such standards may change over time, which could result in significant revisions to our current E&S practices and disclosures. 33 33 33 33 33 33 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements

Our global operations expose us to risks associated with public health crises and outbreaks of epidemics, pandemics, or contagious diseases, such as the COVID-19 pandemic. Even if a virus or other illness does not spread significantly, the perceived risk of infection or health risk may result in reduced demand for our products and materially affect our business. As we cannot predict the duration or scope of any future public health crisis, epidemic or pandemic, the negative financial impact to our results cannot be reasonably estimated and could be material. Factors that will influence the impact on our business and operations include the duration and extent of such events, including the virulence of the infection, the timing of vaccine development and distribution across the world and its impact on economic recovery, the extent of imposed or recommended containment and mitigation measures, including travel restrictions, and their impact on our operations, and the general economic consequences of public health crises, epidemics and pandemics. To the extent any public health crisis, epidemic or pandemic adversely affected or affects our business and financial results, it may also have the effect of heightening many of the other risks that could adversely affect our business described in this Annual Report, such as risks associated with industry capacity utilization, volatility in the price and availability of raw materials, supply chain interruptions, material adverse changes in customer relationships including any failure of a customer to perform its obligations under agreements with us, and risks associated with worldwide or regional economic conditions.

Our global operations expose us to risks associated with public health crises and outbreaks of epidemics, pandemics, or contagious diseases, such as COVID-19. The COVID-19 pandemic and the associated containment efforts had a serious adverse impact on the economy and a material adverse effect on our business, as the demand for crude oil, gasoline, jet fuel, diesel fuel and other refined products was significantly reduced. We may be impacted again in the future depending on the duration and scope of any future health crises, epidemics, or pandemics. 23 23 23 23 23 23 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements Even if a virus or other illness does not spread significantly, the perceived risk of infection or health risk may result in reduced demand for our products and materially affect our business. As we cannot predict the duration or scope of any public health crisis, epidemic or pandemic, the negative financial impact to our results cannot be reasonably estimated and could be material. Factors that will influence the impact on our business and operations include the duration and extent of such events, including the virulence of the infection, the timing of vaccine development and distribution across the world and its impact on economic recovery, the extent of imposed or recommended containment and mitigation measures, including travel restrictions, and their impact on our operations, and the general economic consequences of public health crises, epidemics and pandemics, such as the COVID-19 pandemic. To the extent any public health crisis, epidemic or pandemic adversely affected or affects our business and financial results, it may also have the effect of heightening many of the other risks that could adversely affect our business described in this Annual Report, such as risks associated with industry capacity utilization, volatility in the price and availability of raw materials, supply chain interruptions, material adverse changes in customer relationships including any failure of a customer to perform its obligations under agreements with us, and risks associated with worldwide or regional economic conditions.

The operation of facilities, such as refineries, power plants, fractionators, pipelines, terminals and vessels is inherently subject to the risks of spills, discharges or other inadvertent releases of petroleum, refined product or hazardous substances. If any of these events had previously occurred or occurs in the future in connection with the operation or maintenance of any of our assets, or in connection with any facilities that receive our wastes or byproducts for treatment or disposal, other than events for which we are indemnified, we could be liable for all costs and penalties associated with their remediation under federal, state, local and international environmental laws or at common law, and could be liable for property damage to third parties caused by contamination from releases and spills.

The operation of refineries, power plants, fractionators, pipelines, terminals, gas processing facilities and vessels is inherently subject to the risks of spills, discharges or other inadvertent releases of petroleum or hazardous substances. If any of these events had previously occurred or occurs in the future in connection with any of our refineries, pipelines or refined petroleum products terminals, or in connection with any facilities that receive our wastes or byproducts for treatment or disposal, other than events for which we are indemnified, we could be liable for all costs and penalties associated with their remediation under federal, state, local and international environmental laws or at common law, and could be liable for property damage to third parties caused by contamination from releases and spills. 27 27 27 27 27 27 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements

Currently, multiple legislative and regulatory measures to address GHG and other emissions are in various phases of consideration, promulgation, implementation or reversal. These include actions to develop international, federal, regional or statewide programs, which could require reductions in our GHG or other emissions, establish a carbon tax and decrease the demand for our refined products. Requiring reductions in these emissions could result in increased costs to (i) operate and maintain our facilities, (ii) install new emission controls at our facilities and (iii) administer and manage any emissions programs, including acquiring emission credits or allotments. International climate change-related efforts, such as the 2015 United Nations Conference on Climate Change, which led to the creation of the Paris Agreement, and the 2023 United Nations Climate Change Conference, may impact the regulatory framework of states whose policies directly influence our present and future operations. In January 2025, President Trump signed an executive order directing the United States to withdraw from the Paris Agreement, and it is expected that President Trump and the Republican-led Congress will diverge from the previous administration’s positions and GHG commitments. However, future emission reduction targets and other provisions of legislative or regulatory initiatives and policies enacted in the future by the United States could be brought by future administrations or, in the absence of federal action, states may become more active and focused on taking legislative or regulatory actions aimed at climate change and minimizing GHG emissions. 34 34 34 34 34 34 States have been and are expected to continue to adopt new and amended legislative and regulatory measures regarding climate change and GHG emissions controls. For example, in 2017, the California state legislature adopted Assembly Bill 398, which provides direction and parameters on utilizing cap and trade after 2020 to meet the 40% reduction target for GHG emissions from 1990 levels by 2030 specified in Senate Bill 32. Compliance with the cap and trade program is demonstrated through a market-based credit system. Additionally, on August 25, 2022, the CARB adopted regulations that effectively ban the in-state sales of new cars containing internal combustion engines beginning in 2035. Also, on December 15, 2022, CARB adopted its “2022 Scoping Plan for Achieving Carbon Neutrality,” which purports to provide a road map for California to achieve carbon neutrality (which it defines as removing as many carbon emissions from the atmosphere as it emits) by year 2045. Other states are proposing, or have already promulgated, low carbon fuel standards or similar initiatives to reduce emissions from the transportation sector. If we are unable to pass the costs of compliance on to our customers, sufficient credits are unavailable for purchase, we have to pay a significantly higher price for credits, or if we are otherwise unable to meet our compliance obligation, our financial condition and results of operations could be adversely affected. Additionally, certain states have recently passed legislation seeking to recover financial damages allegedly associated with climate change from fossil fuel companies like the Vermont Climate Superfund Act passed by the Vermont Legislature in May 2024. The future of the U.S.’s climate change strategy and the impact to our industry and operations due to further GHG regulation is unknown at this time. Federal, regional and state climate change and air emissions goals and regulatory programs are complex, subject to change and impose considerable uncertainty due to a number of factors including technological feasibility, legal challenges and potential changes in federal policy. Increasing concerns about climate change and carbon intensity have resulted in heightened societal awareness and a number of international and national measures to limit GHG emissions. We cannot determine what final regulations will be enacted, modified or reversed, or whether stricter investor pressure can be expected in the future. Any of these changes may have a material adverse impact on our business or financial condition.

Currently, multiple legislative and regulatory measures to address GHG and other emissions are in various phases of consideration, promulgation or implementation. These include actions to develop international, federal, regional or statewide programs, which could require reductions in our GHG or other emissions, establish a carbon tax and decrease the demand for our refined products. Requiring reductions in these emissions could result in increased costs to (i) operate and maintain our facilities, (ii) install new emission controls at our facilities and (iii) administer and manage any emissions programs, including acquiring emission credits or allotments. For example, in 2017, the California state legislature adopted Assembly Bill 398, which provides direction and parameters on utilizing cap and trade after 2020 to meet the 40% reduction target for GHG emissions from 1990 levels by 2030 specified in Senate Bill 32. Compliance with the cap and trade program is demonstrated through a market-based credit system. Additionally, on August 25, 2022, the California Air Resources Board (CARB) adopted regulations that effectively ban the in-state sales of new cars containing internal combustion engines beginning in 2035. Also, on December 15, 2022, CARB adopted its “2022 Scoping Plan for Achieving Carbon Neutrality,” which purports to provide a road map for California to achieve carbon neutrality (which it defines as removing as many carbon emissions from the atmosphere as it emits) by year 2045. Other states are proposing, or have already promulgated, low carbon fuel standards or similar initiatives to reduce emissions from the transportation sector. If we are unable to pass the costs of compliance on to our customers, sufficient credits are unavailable for purchase, we have to pay a significantly higher price for credits, or if we are otherwise unable to meet our compliance obligation, our financial condition and results of operations could be adversely affected. Federal, regional and state climate change and air emissions goals and regulatory programs are complex, subject to change and impose considerable uncertainty due to a number of factors including technological feasibility, legal challenges and potential changes in federal policy. Increasing concerns about climate change and carbon intensity have also resulted in heightened societal awareness and a number of international and national measures to limit GHG emissions. Additional stricter regulatory measures and investor pressure can be expected in the future and any of these changes may have a material adverse impact on our business or financial condition. 28 28 28 28 28 28 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements International climate change-related efforts, such as the 2015 United Nations Conference on Climate Change, which led to the creation of the Paris Agreement, and the 2023 United Nations Climate Change Conference, may impact the regulatory framework of states whose policies directly influence our present and future operations. Although the United States had previously withdrawn from the Paris Agreement, it has since taken the steps necessary to rejoin, which was effective in February 2021. The future of the U.S.’s climate change strategy and the impact to our industry and operations due to further GHG regulation is unknown at this time.

We often utilize the services of third parties to transport crude oil or other feedstocks, NGL, refined petroleum and renewable fuels products to and from our facilities. In addition to our own operational risks, we could experience interruptions of supply or increases in costs to deliver our products to market if the ability to transport is disrupted because of weather events, natural disasters, accidents, governmental regulations, public health crises, armed hostilities, or third-party actions, including protests. A prolonged disruption in our ability to transport crude oil or other feedstocks, NGL, refined petroleum or renewable fuels products to or from one or more of our refineries or other facilities could have a material adverse effect on our business, financial condition, results of operations and cash flows. In order to maintain or increase throughput levels on our natural gas gathering and transportation pipeline systems and NGL pipelines and the asset utilization rates at our natural gas processing plants, we must continually obtain new supplies. The level of successful drilling activity and prices of, and demand for, natural gas and crude oil, as well as producers’ desire and ability to obtain necessary permits are some of the factors that may affect new supplies of natural gas and NGL. If we are not able to obtain new supplies of natural gas to replace the natural decline in volumes from existing wells or because of competition, throughput on our pipelines and the utilization rates of our treating and processing facilities would decline. This could have a material adverse effect on our business, results of operations, financial position and cash flows, and our ability to make cash distributions. 28 28 28 28 28 28

We often utilize the services of third parties to transport crude oil, NGL and refined petroleum products to and from our facilities. In addition to our own operational risks, we could experience interruptions of supply or increases in costs to deliver refined petroleum products to market if the ability of the pipelines or vessels to transport crude oil or refined petroleum products is disrupted because of weather events, accidents, governmental regulations, public health crises, armed hostilities, or third-party actions, including protests. A prolonged disruption of the ability of a pipeline or vessel to transport crude oil, NGL or refined petroleum products to or from one or more of our refineries or other facilities could have a material adverse effect on our business, financial condition, results of operations and cash flows.

We do not produce crude oil and other feedstocks and must purchase all of the feedstocks we process. The prices for crude oil, other feedstocks and refined products can fluctuate based on global, regional and local market conditions, as well as by type and class of products, which can reduce margins and have a significant impact on our refining, wholesale marketing and retail operations, revenues, operating income and cash flows. The ability of the members of OPEC to agree on and to set crude oil price and production controls and changes in trade flows from events such as the war in Eastern Europe have also had, and are likely to continue to have, a significant impact on the market prices of crude oil and certain of our products. In addition, sustained periods of low commodity prices can result in upstream producers significantly curtailing their oil and gas drilling operations, which could substantially delay the production and delivery of volumes of crude oil, natural gas and NGL and negatively impact the results of our Midstream, Refining, and M&S segments. For example, the volume of crude oil and refined petroleum products transported or stored in our pipelines and terminal facilities depends on the demand for and availability of crude oil and refined petroleum products in the areas serviced by our assets. Likewise, our earnings and cash flows would be negatively impacted by a period of sustained lower demand for refined petroleum products, which could lead to lower refinery utilization and result in a decrease in the volumes of refined petroleum product transported through our pipelines and terminal facilities. If a decrease in commodity prices results in declining oil and gas production, then demand for services provided by our Midstream segment may be negatively impacted. The natural gas and NGL gathered, processed, transported, sold and stored by us is delivered into pipelines for further delivery to end-users, including fractionation facilities. Our revenues and cash flows can also increase or decrease as the price of natural gas and NGL fluctuates because of certain contractual arrangements whereby natural gas is purchased for an agreed percentage of proceeds from the sale of the residue gas and/or NGL resulting from processing activities. Lower commodity prices also affect our Chemicals segment, which uses feedstocks that are derivatively produced in the processing of natural gas and refining of crude oil. Those feedstock prices can fluctuate widely for a variety of reasons, including changes in worldwide energy prices and the supply and availability of feedstocks. Due to the highly competitive nature of most of the products sold by our Chemicals segment, market position cannot necessarily be protected by product differentiation or by passing on cost increases to customers. As a result, price increases in raw materials may not correlate with changes in the prices at which petrochemical and plastics products are sold, thereby negatively affecting margins and the results of operations of our Chemicals segment. Additionally, our Renewable Fuels segment is affected by prices and demand for renewable feedstocks. Sustained periods of low prices for renewable fuels or renewable feedstocks due to decreases in demand or production of renewable fuels products could have a material adverse effect on the results of operations of our Renewable Fuels segment. Sustained or prolonged declines in commodity prices and other feedstocks may adversely affect our results of operations, liquidity, access to the capital markets, and our ability to fund our capital priorities, including share repurchases and dividends.

Similar to other companies in the industry in which we operate, our financial results are largely affected by the relationship, or margin, between the prices at which we sell refined petroleum, petrochemical and plastics products and the prices for crude oil and other feedstocks used in manufacturing these products. Historically, margins have been volatile, and we expect they will continue to be volatile in the future. The cost of feedstocks and the prices at which we can ultimately sell our products depend on numerous factors beyond our control, including regional and global supply and demand, which are subject to, among other things, production levels, levels of refined petroleum product inventories, productivity and growth of economies, geopolitical risks, such as turmoil in the Middle East, Eastern Europe, and other producing regions, technology advancements and the pace of the energy transition, weather-related damage and disruptions due to other natural or human causes, consumer preferences and the use and availability of substitute products, and governmental regulation. We do not produce crude oil and other feedstocks and must purchase all of the feedstocks we process. The prices for crude oil and refined petroleum products can fluctuate based on global, regional and local market conditions, as well as by type and class of products, which can reduce margins and have a significant impact on our refining, wholesale marketing and retail operations, revenues, operating income and cash flows. The ability of the members of the Organization of Petroleum Exporting Countries (OPEC) to agree on and to maintain crude oil price and production controls and changes in trade flows from events such as the Russia-Ukraine war have also had, and are likely to continue to have, a significant impact on the market prices of crude oil and certain of our products. Also, crude oil supply contracts generally have market-based pricing provisions. We normally purchase our refinery feedstocks weeks before manufacturing and selling the refined petroleum products. We also purchase refined petroleum products produced by others for sale to our customers. Changes in prices that occur between the time we purchase feedstocks or products and when we sell the refined petroleum products could have a significant effect on our financial results. The price of natural gas and crude oil also influences prices for the petrochemical and plastics products we produce and the feedstocks used to manufacture those products. Our Chemicals segment uses feedstocks that are derivatively produced in the processing of natural gas and refining of crude oil, and those feedstock prices can fluctuate widely for a variety of reasons, including changes in worldwide energy prices and the supply and availability of the feedstocks. Due to the highly competitive nature of most of the products sold by our Chemicals segment, market position cannot necessarily be protected by product differentiation or by passing on cost increases to customers. As a result, price increases in raw materials may not correlate with changes in the prices at which petrochemical and plastics products are sold, thereby negatively affecting margins and the results of operations of our Chemicals segment. Sustained or prolonged declines in commodity prices and margins for our products may adversely affect our results of operations, liquidity, access to the capital markets, and our ability to fund our capital priorities, including share repurchases and dividends. 21 21 21 21 21 21 Table of ContentsIndex to Financial Statements Table of Contents Index to Financial Statements Table of Contents Index to Financial Statements

In order to maintain or increase throughput levels on our natural gas gathering and transportation pipeline systems and NGL pipelines and the asset utilization rates at our natural gas processing plants, we must continually obtain new supplies. The level of successful drilling activity and prices of, and demand for, natural gas and crude oil, as well as producers’ desire and ability to obtain necessary permits are some of the factors that may affect new supplies of natural gas and NGL. If we are not able to obtain new supplies of natural gas to replace the natural decline in volumes from existing wells or because of competition, throughput on our pipelines and the utilization rates of our treating and processing facilities would decline. This could have a material adverse effect on our business, results of operations, financial position and cash flows.

Our Midstream business is affected by the price of and demand for crude oil, natural gas and NGL, which have historically been volatile. The prices for crude oil, natural gas and NGL depend upon factors beyond our control, including global and local demand, production levels, imports and exports, seasonality and weather conditions, economic and political conditions domestically and internationally, and governmental regulations. Decreases in energy prices can decrease drilling activity, production rates and investments by third parties in the development of new crude oil and natural gas reserves. Sustained periods of low prices can also cause producers to significantly curtail or limit their oil and gas drilling operations, which could substantially delay the production and delivery of volumes of crude oil, natural gas and NGL. The volume of crude oil and refined petroleum products transported or stored in our pipelines and terminal facilities depends on the demand for and availability of crude oil and refined petroleum products in the areas serviced by our assets. A period of sustained low demand or prices for crude oil could lead to a decline in drilling activity and production, which would lead to a decrease in the volumes of crude oil transported through our pipelines and terminal facilities, negatively affecting our earnings and cash flows. Likewise, our earnings and cash flows would be negatively impacted by a period of sustained lower demand for refined petroleum products, which could lead to lower refinery utilization and result in a decrease in the volumes of refined petroleum product transported through our pipelines and terminal facilities. The natural gas gathered, processed, transported, sold and stored by us is delivered into pipelines for further delivery to end-users, including fractionation facilities. Demand for these services may be substantially reduced due to lower rates of natural gas production as a result of declining commodity prices. Commodity prices, including when ethane prices are low relative to natural gas prices, can also negatively impact throughput volumes of NGL transported, fractionated and stored. Additionally, revenues and cash flows can increase or decrease as the price of natural gas and NGL fluctuates because of certain contractual arrangements whereby natural gas is purchased for an agreed percentage of proceeds from the sale of the residue gas and/or NGL resulting from its processing activities. In order to maintain or increase throughput levels on our natural gas gathering and transportation pipeline systems and NGL pipelines and the asset utilization rates at our natural gas processing plants, we must continually obtain new supplies. The level of successful drilling activity and prices of, and demand for, natural gas and crude oil, as well as producers’ desire and ability to obtain necessary permits are some of the factors that may affect new supplies of natural gas and NGL. If we are not able to obtain new supplies of natural gas to replace the natural decline in volumes from existing wells or because of competition, throughput on our pipelines and the utilization rates of our treating and processing facilities would decline. This could have a material adverse effect on our business, results of operations, financial position and cash flows, and our ability to make cash distributions.