Oneok Inc /new
Management Discussion synthesis.

See reconciliation of net income to adjusted EBITDA in the "Non-GAAP Financial Measures" section. Changes in commodity prices and sales volumes affect both revenues and cost of sales and fuel in our Consolidated Statements of Income and, therefore, the impact is largely offset between these line items, except where noted. Operating income for the year ended December 31, 2022, includes $96.1 million of business interruption insurance recoveries, which are included in the other operating (income) expense, net line item above, and an approximately $30 million unfavorable impact from the 45-day business interruption coverage waiting period related to the Medford incident in our Natural Gas Liquids segment. 39

2022 vs. 2021 - Adjusted EBITDA increased $131.6 million primarily as a result of the following: •an increase of $102.8 million in exchange services (excluding the impact of Winter Storm Uri discussed below) due primarily to: ◦$186.3 million in higher average fee rates, primarily as a result of inflation-based and fuel cost escalators in our contracts, ◦$50.1 million in higher volumes primarily in the Rocky Mountain region and Permian Basin, offset partially by lower volumes in the Mid-Continent region, offset by ◦$129.9 million in higher costs, primarily fuel and power costs and third-party fractionation costs. A portion of the third-party fractionation costs relate to the 45-day Medford incident business interruption coverage waiting period, and

See "Growth Projects" in the "Recent Developments" section for discussion of our capital-growth projects. For a discussion of our capital expenditure financing, see "Capital Expenditures" in the "Liquidity and Capital Resources" section. Selected Financial Results and Operating Information - The following tables set forth certain selected financial results and operating information for our Natural Gas Pipelines segment for the periods indicated:

LIQUIDITY AND CAPITAL RESOURCES General - Our primary sources of cash inflows are operating cash flows, proceeds from our commercial paper program and our $2.5 Billion Credit Agreement, debt issuances and the issuance of common stock for our liquidity and capital resources requirements. On January 9, 2023, we reached an agreement with our insurers to settle all claims for physical damage and business interruption related to the Medford incident. Under the terms of the settlement agreement, we agreed to resolve the claims for total insurance payments of $930 million, $100 million of which was received in 2022. The remaining $830 million was received in the first quarter 2023. The proceeds serve as settlement for property damage, business interruption claims to the date of settlement and as payment in lieu of future business interruption insurance claims. We expect our cash from operations in the remainder of 2023 and in 2024 to be impacted by incurred costs and losses resulting from the Medford incident for which we will no longer receive business interruption proceeds. We expect our sources of cash inflows to provide sufficient resources to finance our operations, quarterly cash dividends, capital expenditures and maturities of long-term debt. We believe we have sufficient liquidity due to our $2.5 Billion Credit Agreement, which expires in June 2027, and access to $1.0 billion available through our "at-the-market" equity program. As of the date of this report, no shares have been sold through our "at-the-market" equity program. We may manage interest-rate risk through the use of fixed-rate debt, floating-rate debt and interest-rate swaps. For additional information on our interest-rate swaps, see Note D of the Notes to Consolidated Financial Statements in this Annual Report. Guarantees and Cash Management - We and ONEOK Partners are issuers of certain public debt securities. We guarantee certain indebtedness of ONEOK Partners, and ONEOK Partners and the Intermediate Partnership guarantee certain of our indebtedness. The guarantees in place for our and ONEOK Partners' indebtedness are full, irrevocable, unconditional and absolute joint and several guarantees to the holders of each series of outstanding securities. Liabilities under the guarantees rank equally in right of payment with all existing and future senior unsecured indebtedness. As ONEOK Partners and the Intermediate Partnership are consolidated subsidiaries of ONEOK, separate financial statements for the guarantors are not required, as long as the alternative disclosure required by Rule 13-01 is provided, which includes narrative disclosure and summarized financial information. The Intermediate Partnership holds all of ONEOK Partners' interests and equity in its subsidiaries, which are nonguarantors, and substantially all the assets and operations reside with nonguarantor operating subsidiaries. Therefore, as allowed under Rule 13-01, we have excluded the summarized financial information for each issuer and guarantor as the combined financial information of the subsidiary issuer and parent guarantor, excluding our ownership of all the interests in ONEOK Partners, reflect no material assets, liabilities or results of operations, apart from the guaranteed indebtedness. For additional information on our and ONEOK Partners' indebtedness, see Note G of the Notes to Consolidated Financial Statements in this Annual Report. We use a centralized cash management program that concentrates the cash assets of our nonguarantor operating subsidiaries in joint accounts for the purposes of providing financial flexibility and lowering the cost of borrowing, transaction costs and bank fees. Our centralized cash management program provides that funds in excess of the daily needs of our operating subsidiaries are concentrated, consolidated or otherwise made available for use by other entities within our consolidated group. Our operating subsidiaries participate in this program to the extent they are permitted pursuant to FERC regulations or their operating agreements. Under the cash management program, depending on whether a participating subsidiary has short-term cash surpluses or cash requirements, we provide cash to the subsidiary or the subsidiary provides cash to us. Short-term Liquidity - Our principal sources of short-term liquidity consist of cash generated from operating activities, distributions received from our equity-method investments, proceeds from our commercial paper program and our $2.5 Billion Credit Agreement. We had working capital (defined as current assets less current liabilities) deficits of $503.9 million and $810.2 million as of December 31, 2022, and December 31, 2021, respectively. Although working capital is influenced by several factors, including, among other things: (i) the timing of (a) debt and equity issuances, (b) the funding of capital expenditures, (c) scheduled debt repayments, and (d) accounts receivable and payable; and (ii) the volume and cost of inventory and commodity imbalances, our working capital deficits at December 31, 2022 and 2021, were driven primarily by current maturities of long-term debt. We may have working capital deficits in future periods as we continue to repay long-term debt. We do not expect this working capital deficit to have an adverse impact to our cash flows or operations. 45

For additional information on our $2.5 Billion Credit Agreement, see Note G of the Notes to Consolidated Financial Statements in this Annual Report. Long-term Financing - In addition to our principal sources of short-term liquidity discussed above, we expect to fund our longer-term financing requirements by issuing long-term notes. Other options to obtain financing include, but are not limited to, issuing common stock, loans from financial institutions, issuance of convertible debt securities or preferred equity securities, asset securitization and the sale and lease-back of facilities. Debt Issuances - In November 2022, we completed an underwritten public offering of $750 million, 6.1% senior unsecured notes due 2032. The net proceeds, after deducting underwriting discounts, commissions and offering expenses, were $742 million. The proceeds were used primarily to repay all outstanding amounts under our commercial paper program. The remainder was used for general corporate purposes. In June 2022, Guardian entered into a $120 million unsecured term loan agreement. During the second quarter 2022, Guardian drew the full $120 million available under the agreement and used the proceeds to repay intercompany debt with ONEOK. Debt Repayments - In July 2022, we redeemed the remaining $895.8 million of our 3.375% senior notes due October 2022 at 100% of the principal amount, plus accrued and unpaid interest, with cash on hand and short-term borrowings. Subsequent event - We elected to redeem our $425 million, 5.0% senior notes due September 2023, with a redemption effective date in late February 2023. We expect the redemption price to equal 100% of the principal amount of the notes, plus accrued and unpaid interest, which we will pay with cash on hand. Material Commitments - We have material cash commitments related to our capital expenditures, senior notes and corresponding interest payments, which we expect to fund through our sources of cash inflows discussed above. Our senior notes and interest payments are discussed in Note G of the Notes to Consolidated Financial Statements in this Annual Report. We also have cash commitments related to transportation, storage and other commercial contracts, as well as our financial and physical derivative obligations, which we expect to fund with cash from operations. Capital Expenditures - We classify expenditures that are expected to generate additional revenue, return on investment or significant operating or environmental efficiencies as growth capital expenditures. Maintenance capital expenditures are those capital expenditures required to maintain our existing assets and operations and do not generate additional revenues. Maintenance capital expenditures are made to replace partially or fully depreciated assets, to maintain the existing operating capacity of our assets and to extend their useful lives. Our capital expenditures are financed typically through operating cash flows and short- and long-term debt.

•our ability to identify and execute opportunities, and the economic viability of those opportunities, including those relating to renewable natural gas, carbon capture, use and storage, other renewable energy sources such as solar and wind and alternative low carbon fuel sources such as hydrogen; •the ability of our existing assets and our ability to apply and continue to develop our expertise to support the growth of, and transformation to, various renewable and alternative energy opportunities, including through the positioning and optimization of our assets; •our ability to efficiently reduce our GHG emissions (both Scope 1 and 2 emissions), including through the use of lower carbon power alternatives, management practices and system optimizations; •the necessity to focus on maintaining and enhancing our existing assets while reducing our Scope 1 and 2 GHG emissions; •the effects of weather and other natural phenomena and the effects of climate change (including physical and transformation-related effects) on our operations, demand for our services and commodity prices; •acts of nature, sabotage, terrorism or other similar acts that cause damage to our facilities or our suppliers', customers' or shippers' facilities; •the inability of insurance proceeds to cover all liabilities or incurred costs and losses, or lost earnings, resulting from a loss; •delays in receiving insurance proceeds from covered losses; •the risk of increased costs for insurance premiums; •increased costs associated with insurance coverage, security or other items as a consequence of terrorist attacks; •the timing and extent of changes in energy commodity prices, including changes due to production decisions by other countries, such as the failure of countries to abide by agreements to reduce production volumes; 51 •competition from other United States and foreign energy suppliers and transporters, as well as alternative forms of energy, including, but not limited to, solar power, wind power, geothermal energy and biofuels such as ethanol and biodiesel;

Consolidated Operations Selected Financial Results - The following table sets forth certain selected financial results for the periods indicated: Years Ended December 31,2022 vs. 20212021 vs. 2020

ProjectScopeApproximateCosts (a)Completion Natural Gas Gathering and Processing(In millions) Bear Creek plant expansion and related infrastructure200 MMcf/d processing plant expansion and related gathering infrastructure in the Williston Basin$405Completed

Operating Information202120202019 Raw feed throughput (MBbl/d) (a) 1,198 1,084 1,079 Average Conway-to-Mont Belvieu OPIS price differential - ethane in ethane/propane mix ($/gallon)

Financing Cash Flows 2021 vs. 2020 - Cash from financing activities decreased $3.1 billion due primarily to the issuances of $3.25 billion in long-term debt and issuance of common stock in 2020, offset partially by repayments of long-term debt of $0.6 billion in 2021 compared with repayments of $1.5 billion in 2020. Cash Flow Analysis for the Year Ended December 31, 2020 vs. 2019 - The cash flow analysis for the year ended December 31, 2020, compared with the year ended December 31, 2019, is included in Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations of our 2020 Annual Report on Form 10-K, which is available via the SEC's website at www.sec.gov and our website at www.oneok.com.

Additional information regarding our financial results and operating information is provided in the following discussion for each of our segments. Selected Financial Results and Operating Information for the Year Ended December 31, 2021 vs. 2020 - The consolidated and segment financial results and operating information for the year ended December 31, 2021, compared with the year ended December 31, 2020, are included in Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations of our 2021 Annual Report on Form 10-K, which is available via the SEC's website at www.sec.gov and our website at www.oneok.com.

Cost of sales and fuel (exclusive of depreciation and operating costs)(5,116.6)(3,226.1)(844.0)1,890.5 2,382.1 Operating costs, excluding noncash compensation adjustments

Impairment charges$- $- $566.1 - (566.1) Capital expenditures$444.9 $275.2 $446.1 169.7 (170.9) See reconciliation of net income to adjusted EBITDA in the "Non-GAAP Financial Measures" section. Changes in commodity prices and sales volumes affect both revenue and cost of sales and fuel, and, therefore, the impact is largely offset between these line items.

Natural gas gathered (BBtu/d) 2,852 2,736 2,553 Natural gas processed (BBtu/d) (b) 2,612 2,515 2,364 Average fee rate ($/MMBtu) $1.10 $1.04 $0.89

Natural Gas Liquids Growth Projects - Our Natural Gas Liquids segment invests in projects to transport, fractionate, store and deliver to market centers NGL supply from shale and other resource development areas. Our growth strategy is focused around connecting 41 diversified supply basins from the Rocky Mountain region through the Mid-Continent region and the Permian Basin with purity NGLs demand from the petrochemical and refining industries and NGL export demand in the Gulf Coast. See "Growth Projects" in the "Recent Developments" section for discussion of our capital-growth projects. In 2022, we connected one third-party natural gas processing plant in the Permian Basin and one raw feed truck terminal in the Mid-Continent region to our NGL system. In addition, one third-party natural gas processing plant in the Permian Basin connected to our system was expanded.

Years Ended December 31,2022 vs. 20212021 vs. 2020 Financial Results202220212020$ Increase (Decrease) (Millions of dollars) Transportation revenues$408.8 $412.9 $401.7 (4.1)11.2

Storage revenues130.5 77.6 68.4 52.9 9.2 Residue natural gas sales and other revenues39.2 116.4 9.9 (77.2)106.5 Cost of sales and fuel (exclusive of depreciation and operating costs)

(Unaudited) 202220212020 Reconciliation of net income to adjusted EBITDA(Thousands of dollars) Net income$1,722,221 $1,499,706 $612,809 Add: Interest expense, net of capitalized interest675,946 732,924 712,886

The following table sets forth our growth and maintenance capital expenditures, excluding AFUDC, for the periods indicated: Capital Expenditures202220212020

We expect total capital expenditures, excluding AFUDC and capitalized interest, of $1.3-$1.5 billion in 2023. Credit Ratings - Our long-term debt credit ratings as of February 21, 2023, are shown in the table below:

Rating AgencyLong-Term RatingShort-Term RatingOutlook Moody'sBaa3Prime-3Positive S&PBBBA-2Stable FitchBBBF2Stable Our credit ratings, which are investment grade, may be affected by our leverage, liquidity, credit profile or potential transactions. The most common criteria for assessment of our credit ratings are the debt-to-EBITDA ratio, interest coverage, business risk profile and liquidity. If our credit ratings were downgraded, our cost to borrow funds under our $2.5 Billion Credit Agreement could increase and a potential loss of access to the commercial paper market could occur. In the event that we are unable to borrow funds under our commercial paper program and there has not been a material adverse change in our business, we would continue to have access to our $2.5 Billion Credit Agreement, which expires in 2027. An adverse credit rating change alone is not a default under our $2.5 Billion Credit Agreement. In the normal course of business, our counterparties provide us with secured and unsecured credit. In the event of a downgrade in our credit ratings or a significant change in our counterparties' evaluation of our creditworthiness, we could be required to provide additional collateral in the form of cash, letters of credit or other negotiable instruments as a condition of continuing to conduct business with such counterparties. We may be required to fund margin requirements with our counterparties with cash, letters of credit or other negotiable instruments. Dividends - Holders of our common stock share equally in any common stock dividends declared by our Board of Directors, subject to the rights of the holders of outstanding preferred stock. In 2022, we paid common stock dividends of $3.74 per share, which is consistent with prior year. In February 2023, we paid a quarterly common stock dividend of $0.955 per share ($3.82 per share on an annualized basis), an increase of 2% compared with the same quarter in the prior year. Our Series E Preferred Stock pays quarterly dividends on each share of Series E Preferred Stock, when, as and if declared by our Board of Directors, at a rate of 5.5% per year. In 2022, we paid dividends of $1.1 million for the Series E Preferred Stock. In February 2023, we paid quarterly dividends totaling $0.3 million for the Series E Preferred Stock. For the year ended December 31, 2022, our cash flows from operations exceeded dividends paid by $1.2 billion. We expect our cash flows from operations to continue to sufficiently fund our cash dividends. To the extent operating cash flows are not sufficient to fund our dividends, we may utilize cash on hand from other sources of short- and long-term liquidity to fund a portion of our dividends.

Cash and cash equivalents at end of period$220.2 $146.4 $524.5 Operating Cash Flows - Operating cash flows are affected by earnings from our business activities and changes in our operating assets and liabilities. Changes in commodity prices and demand for our services or products, whether because of general economic conditions, changes in supply, changes in demand for the end products that are made with our products or increased competition from other service providers, could affect our earnings and operating cash flows. Our operating cash flows can also be impacted by changes in our NGLs and natural gas inventory balances, which are driven primarily by commodity prices, supply, demand and the operation of our assets. 2022 vs. 2021 - Cash flows from operating activities, before changes in operating assets and liabilities, increased $214.5 million due primarily to higher net income resulting from higher realized commodity prices, net of hedging, and higher average fee rates in our Natural Gas Gathering and Processing segment and higher exchange services in our Natural Gas Liquids segment. These increases were offset partially by the impact of Winter Storm Uri in our Natural Gas Pipelines segment in the first quarter 2021, as discussed in "Financial Results and Operating Information." The changes in operating assets and liabilities increased operating cash flows $3.4 million for the year ended December 31, 2022, compared with a decrease of $141.8 million for the same period in 2021. The change is due primarily to changes in risk management assets and liabilities, which include the gains associated with the settlements of forward-starting interest rate swaps in 2022 and changes in the fair value of risk-management assets and liabilities; accounts receivable resulting from the timing of receipt of cash from customers and NGLs and natural gas in inventory, both of which vary from period to period and with changes in commodity prices; offset partially by changes in accounts payable, which also vary from period to period with changes in commodity prices, and from the timing of payments to vendors, suppliers and other third parties and changes in other assets and liabilities.

Investing Cash Flows 2022 vs. 2021 - Cash used in investing activities increased $474.0 million due primarily to capital expenditures related to our capital-growth projects.

IMPACT OF NEW ACCOUNTING STANDARDS Information about the impact of new accounting standards is included in Note A of the Notes to Consolidated Financial Statements in this Annual Report. 48

CRITICAL ACCOUNTING POLICIES AND ESTIMATES The preparation of our Consolidated Financial Statements and related disclosures in accordance with GAAP requires us to make estimates and assumptions with respect to values or conditions that cannot be known with certainty that affect the reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements. These estimates and assumptions also affect the reported amounts of revenue and expenses during the reporting period. Although we believe these estimates and assumptions are reasonable, actual results could differ from our estimates. The following is a summary of our most critical accounting policies and estimates, which are defined as those estimates and policies most important to the portrayal of our financial condition and results of operations and requiring management's most difficult, subjective or complex judgment, particularly because of the need to make estimates concerning the impact of inherently uncertain matters. We have discussed the development and selection of our estimates and critical accounting policies with the Audit Committee of our Board of Directors. See Note A of the Notes to Consolidated Financial Statements in this Annual Report for the description of our accounting policies and additional information about our critical accounting policies and estimates. Derivatives and Risk-management Activities - We utilize derivatives to reduce our market-risk exposure to commodity price and interest-rate fluctuations and to achieve more predictable cash flows. The accounting for changes in the fair value of a derivative instrument depends on whether it qualifies and has been designated as part of a hedging relationship. When possible, we implement effective hedging strategies using derivative financial instruments that qualify as hedges for accounting purposes. We have not used derivative instruments for trading purposes. For a derivative designated as a cash flow hedge, the gain or loss from a change in fair value of the derivative instrument is deferred in accumulated other comprehensive loss until the forecasted transaction affects earnings, at which time the fair value of the derivative instrument is reclassified into earnings. We assess hedging relationships at the inception of the hedge and on an ongoing basis to determine whether the hedging relationship is, and is expected to remain, highly effective. We do not believe that changes in our fair value estimates of our derivative instruments have a material impact on our results of operations, as the majority of our derivatives are accounted for as effective cash flow hedges. However, if a derivative instrument is ineligible for cash flow hedge accounting or if we fail to appropriately designate it as a cash flow hedge, changes in fair value of the derivative instrument would be recorded currently in earnings. Additionally, if a cash flow hedge ceases to qualify for hedge accounting treatment because it is no longer probable that the forecasted transaction will occur, the change in fair value of the derivative instrument would be recognized in earnings. For more information on commodity price sensitivity and a discussion of the market risk of pricing changes, see Item 7A, Quantitative and Qualitative Disclosures about Market Risk. See Notes A, C and D of the Notes to Consolidated Financial Statements in this Annual Report for additional discussion of fair value measurements and derivatives and risk-management activities. Impairment of Goodwill and Long-Lived Assets, Including Intangible Assets - We assess our goodwill for impairment at least annually as of July 1, unless events or changes in circumstances indicate an impairment may have occurred before that time. As part of our goodwill impairment test, we may first assess qualitative factors (including macroeconomic conditions, industry and market considerations, cost factors and overall financial performance) to determine whether it is more likely than not that the fair value of each of our reporting units is less than its carrying amount. If further testing is necessary or a quantitative test is elected, we perform a Step 1 analysis for goodwill impairment. In a Step 1 analysis, an assessment is made by comparing the fair value of a reporting unit with its carrying amount, including goodwill. If the carrying value of a reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. We assess our long-lived assets, including intangible assets, for impairment whenever events or changes in circumstances indicate that an asset's carrying amount may not be recoverable. An impairment is indicated if the carrying amount of a long-lived asset exceeds the sum of the undiscounted future cash flows expected to result from the use and eventual disposition of the asset. If an impairment is indicated, we record an impairment loss equal to the difference between the carrying value and the fair value of the long-lived asset. Our impairment tests require the use of assumptions and estimates, such as industry economic factors and the profitability of future business strategies. To estimate undiscounted future cash flows of long-lived assets, we may apply a probability-weighted approach that incorporates different assumptions and potential outcomes related to the underlying long-lived assets. The evaluation is performed at the lowest level for which separately identifiable cash flows exist. To estimate the fair value of 49

See Note E of the Notes to Consolidated Financial Statements in this Annual Report for additional discussion of property, plant and equipment. FORWARD-LOOKING STATEMENTS Some of the statements contained and incorporated in this Annual Report are forward-looking statements as defined under federal securities laws. The forward-looking statements relate to our anticipated financial performance (including projected operating income, net income, capital expenditures, cash flows and projected levels of dividends), liquidity, management's plans and objectives for our future capital-growth projects and other future operations (including plans to construct additional natural gas and NGL pipelines, processing and fractionation facilities and related cost estimates), our business prospects, the outcome of regulatory and legal proceedings, market conditions and other matters. We make these forward-looking statements in reliance on the safe harbor protections provided under federal securities legislation and other applicable laws. The following discussion is intended to identify important factors that could cause future outcomes to differ materially from those set forth in the forward-looking statements. Forward-looking statements and other statements in this Annual Report regarding our environmental, social and other sustainability targets, plans and goals are not an indication that these statements are required to be disclosed in our filings with the SEC, or that we will continue to make similar statements in the same extent or manner in future filings. In addition, historical, current and forward-looking environmental, social and sustainability-related statements may be based on standards and processes for measuring progress that are still developing and that continue to evolve, and assumptions that are subject to change in the future. Forward-looking statements include the items identified in the preceding paragraph, the information concerning possible or assumed future results of our operations and other statements contained or incorporated in this Annual Report identified by words such as "anticipate," "believe," "continue," "could," "estimate," "expect," "forecast," "goal," "guidance," "intend," "may," "might," "outlook," "plan," "potential," "project," "scheduled," "should," "target," "will," "would," and other words and terms of similar meaning. 50 One should not place undue reliance on forward-looking statements. Known and unknown risks, uncertainties and other factors may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by forward-looking statements. Those factors may affect our operations, markets, products, services and prices. In addition to any assumptions and other factors referred to specifically in connection with the forward-looking statements, factors that could cause our actual results to differ materially from those contemplated in any forward-looking statement include, among others, the following: •the impact of inflationary pressures, including increased interest rates, which may increase our capital expenditures and operating costs, raise the cost of capital or depress economic growth; •the impact on drilling and production by factors beyond our control, including the demand for natural gas, NGLs and crude oil; producers' desire and ability to drill and obtain necessary permits; regulatory compliance; reserve performance; and capacity constraints and/or shut downs on the pipelines that transport crude oil, natural gas and NGLs from producing areas and our facilities; •risks associated with adequate supply to our gathering, processing, fractionation and pipeline facilities, including production declines that outpace new drilling, the shutting-in of production by producers, actions taken by federal, state or local governments to require producers to prorate or to cut their production levels as a way to address any excess market supply situations or extended periods of ethane rejection; •demand for our services and products in the proximity of our facilities; •economic climate and growth in the geographic areas in which we operate; •the risk of a slowdown in growth or decline in the United States or international economies, including liquidity risks in United States or foreign credit markets; •the possibility of future terrorist attacks or the possibility or occurrence of an outbreak of, or changes in, hostilities or changes in the political conditions throughout the world, including the current conflict in Ukraine and the surrounding region; •performance of contractual obligations by our customers, service providers, contractors and shippers; •the effects of changes in governmental policies and regulatory actions, including changes with respect to income and other taxes, pipeline safety, environmental compliance, cybersecurity, climate change initiatives, emissions credits, carbon offsets, carbon pricing, production limits and authorized rates of recovery of natural gas and natural gas transportation costs; •changes in demand for the use of natural gas, NGLs and crude oil because of the development of new technologies or other market conditions caused by concerns about climate change; •the impact of the transformation to a lower-carbon economy, including the timing and extent of the transformation, as well as the expected role of different energy sources, including natural gas, NGLs and crude oil, in such a transformation; •the pace of technological advancements and industry innovation, including those focused on reducing GHG emissions and advancing other climate-related initiatives, and our ability to take advantage of those innovations and developments; •the effectiveness of our risk-management function, including mitigating cyber- and climate-related risks;

- availability of supplies of United States natural gas and crude oil; and - availability of additional storage capacity; •the efficiency of our plants in processing natural gas and extracting and fractionating NGLs; •the composition and quality of the natural gas and NGLs we gather and process in our plants and transport on our pipelines; •risks of marketing, trading and hedging activities, including the risks of changes in commodity prices or the financial condition of our counterparties; •our ability to control operating costs and make cost-saving changes; •the risks inherent in the use of information systems in our respective businesses and those of our counterparties and service providers, including cyber-attacks, which, according to experts, have increased in volume and sophistication since the beginning of the COVID-19 pandemic; implementation of new software and hardware; and the impact on the timeliness of information for financial reporting; •the timely receipt of approval by applicable governmental entities for construction and operation of our pipeline and other projects and required regulatory clearances; •the ability to recover operating costs and amounts equivalent to income taxes, costs of property, plant and equipment and regulatory assets in our state and FERC-regulated rates; •the results of governmental actions, administrative proceedings and litigation, regulatory actions, executive orders, rule changes and receipt of expected clearances involving any local, state or federal regulatory body, including the FERC, the National Transportation Safety Board, Homeland Security, the PHMSA, the EPA and the CFTC; •the mechanical integrity of facilities and pipelines operated; •the capital-intensive nature of our businesses; •the impact of unforeseen changes in interest rates, debt and equity markets, inflation rates, economic recession and other external factors over which we have no control, including the effect on pension and postretirement expense and funding resulting from changes in equity and bond market returns; •actions by rating agencies concerning our credit; •our indebtedness and guarantee obligations could cause adverse consequences, including making us vulnerable to general adverse economic and industry conditions, limiting our ability to borrow additional funds and placing us at competitive disadvantages compared with our competitors that have less debt; •our ability to access capital at competitive rates or on terms acceptable to us; •our ability to acquire all necessary permits, consents or other approvals in a timely manner, to promptly obtain all necessary materials and supplies required for construction, and to construct gathering, processing, fractionation, transportation and storage facilities without labor or contractor problems; •our ability to control construction costs and completion schedules of our pipelines and other projects; •difficulties or delays experienced by trucks, railroads or pipelines in delivering products to or from our terminals or pipelines; •the uncertainty of estimates, including accruals and costs of environmental remediation; •the impact of uncontracted capacity in our assets being greater or less than expected; •the impact of potential impairment charges; •the profitability of assets or businesses acquired or constructed by us; •the risks associated with pending or possible acquisitions and dispositions, including our ability to finance or integrate any such acquisitions and any regulatory delay or conditions imposed by regulatory bodies in connection with any such acquisitions and dispositions; •the risk that material weaknesses or significant deficiencies in our internal controls over financial reporting could emerge or that minor problems could become significant; •the impact and outcome of pending and future litigation; •the impact of recently issued and future accounting updates and other changes in accounting policies;

2023 vs. 2022 - Adjusted EBITDA increased $207 million, primarily as a result of the following: •an increase of $227 million from higher volumes due primarily to increased producer activity in the Rocky Mountain and Mid-Continent regions, and the impact of winter weather in the Rocky Mountain region in the second and fourth quarters of 2022; and •an increase of $49 million due primarily to higher average fee rates and realized condensate prices, net of hedging, offset partially by lower realized NGL prices, net of hedging; offset by •an increase of $62 million in operating costs due primarily to higher employee-related costs, outside services and materials and supplies expense due primarily to the growth of our operations, and higher property insurance premiums. Capital expenditures remained relatively unchanged for 2023, as compared to 2022, due primarily to increased expenditures in 2023 on various capital projects, offset by expenditures in 2022 on our Demicks Lake III project completed in the first quarter of 2023. Years Ended December 31,

Operating Information202320222021 Raw feed throughput (MBbl/d) (a) 1,359 1,237 1,198 Average Conway-to-Mont Belvieu OPIS price differential - ethane in ethane/propane mix ($/gallon)

Natural Gas Pipelines Capital Projects - Our Natural Gas Pipelines segment invests in capital projects that provide transportation and storage services to end users. In February 2024, the FERC approved our Saguaro Connector Pipeline, L.L.C.'s Presidential Permit application to construct and operate new international border-crossing facilities at the U.S. and Mexico border. The proposed border facilities would connect upstream with a potential intrastate pipeline, the Saguaro Connector pipeline. Additionally, the proposed border facilities would connect at the international boundary with a new pipeline under development in Mexico for delivery to a liquefied natural gas export facility on the west coast of Mexico. The final investment decision on the Saguaro Connector pipeline is expected by mid-year 2024. In 2023, we completed an expansion of our injection capabilities of our Oklahoma natural gas storage facilities, which allowed us to utilize and subscribe an additional 4 Bcf of our existing storage capacity, which is fully subscribed through 2027 and 90% subscribed through 2029. We are reactivating previously idled storage facilities with 3 Bcf of working gas storage capacity in Texas, which is already fully subscribed on a firm basis. We are also further expanding our injection capabilities in Oklahoma to allow us to subscribe additional firm storage capacity.

Natural gas transportation capacity contracted (MDth/d) 7,743 7,428 7,395 Transportation capacity contracted96 %94 %95 % (a) - Includes volumes for consolidated entities only. In April 2022, the FERC initiated a review of Guardian's rates pursuant to Section 5 of the Natural Gas Act. In August 2022, Guardian reached a settlement in principle with the participants in the Section 5 rate case. The FERC approved the settlement in February 2023, which resulted in a reduction of rates starting in April 2023. The reduced rates did not have a material impact on our results of operations. In July 2023, Viking filed a proposed increase in rates pursuant to Section 4 of the Natural Gas Act with the FERC. The FERC is currently reviewing the filing. While the ultimate outcome of the filing cannot be predicted, we do not expect it to materially impact our results of operations.

FINANCIAL RESULTS AND OPERATING INFORMATION How We Evaluate Our Operations Management uses a variety of financial and operating metrics to analyze our performance. Our consolidated financial metrics include: (1) operating income; (2) net income; (3) diluted EPS; and (4) adjusted EBITDA. We evaluate segment operating results using adjusted EBITDA and our operating metrics, which include various volume and rate statistics that are relevant for the respective segment. These operating metrics allow investors to analyze the various components of segment financial results in terms of volumes and rate/price. Management uses these metrics to analyze historical segment financial results and as the key inputs for forecasting and budgeting segment financial results. For additional information on our operating metrics, see the respective segment subsections of this "Financial Results and Operating Information" section. Non-GAAP Financial Measures - Adjusted EBITDA is a non-GAAP measure of our financial performance. Adjusted EBITDA is defined as net income adjusted for interest expense, depreciation and amortization, noncash impairment charges, income taxes, noncash compensation expense and certain other noncash items. Following the Magellan Acquisition, we performed a review of our calculation methodology of adjusted EBITDA, and beginning in 2023, we updated our calculation to include the adjusted EBITDA related to our unconsolidated affiliates using the same recognition and measurement methods used to record equity in net earnings from investments. In prior periods, our calculation included equity in net earnings from investments. This change resulted in an additional $62 million of adjusted EBITDA in 2023, and we have not restated prior periods. Adjusted EBITDA from our unconsolidated affiliates is calculated consistently with the definition above and excludes items such as interest, depreciation, income taxes and other noncash items. Although the amounts related to our unconsolidated affiliates are included in the calculation of adjusted EBITDA, such inclusion should not be understood to imply that we have control over the operations and resulting revenues, expenses or cash flows of such unconsolidated affiliates. We believe this non-GAAP financial measure is useful to investors because it and similar measures are used by many companies in our industry as a measurement of financial performance and is commonly employed by financial analysts and others to evaluate our financial performance and to compare financial performance among companies in our industry. Adjusted EBITDA should not be considered an alternative to net income, EPS or any other measure of financial performance presented in accordance with GAAP. Additionally, this calculation may not be comparable with similarly titled measures of other companies.

Financing Cash Flows 2023 vs. 2022 - Cash from financing activities for the year ended December 31, 2023, increased $3.8 billion compared with the same period in 2022, due primarily to the issuance of $5.25 billion senior unsecured notes associated with the Magellan Acquisition. Cash Flow Analysis for the Year Ended December 31, 2022 vs. 2021 - The cash flow analysis for the year ended December 31, 2022, compared with the year ended December 31, 2021, is included in Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations of our 2022 Annual Report on Form 10-K, which is available via the SEC's website at www.sec.gov and our website at www.oneok.com.

See reconciliation of net income to adjusted EBITDA in the "Non-GAAP Financial Measures" section. Changes in commodity prices and sales volumes affect both revenues and cost of sales and fuel in our Consolidated Statements of Income and, therefore, the impact is largely offset between these line items, except where noted. Operating income for the year ended December 31, 2022, includes $96.1 million of business interruption insurance recoveries, which are included in the other operating (income) expense, net line item above, and an approximately $30 million unfavorable impact from the 45-day business interruption coverage waiting period related to the Medford incident in our Natural Gas Liquids segment. 39

$0.04 $(0.01)$0.01 (a) - Represents physical raw feed volumes for which we provide transportation and/or fractionation services. We generally expect ethane volumes to increase or decrease with corresponding increases or decreases in overall NGL production. However, ethane volumes may experience growth or decline greater than corresponding growth or decline in overall NGL production due to ethane economics causing producers to extract or reject ethane. 2022 vs. 2021 - Volumes increased due primarily to increased NGL production in the Rocky Mountain region and Permian Basin, and higher ethane volumes from incentivized ethane recovery in the Rocky Mountain region, offset partially by decreased ethane recovery in the Mid-Continent region due to ethane economics. Volumes also benefited from the unfavorable impact of Winter Storm Uri in the first quarter 2021, offset partially by the impact of winter weather in the Rocky Mountain region in the second and fourth quarters of 2022.

these assets, we use two generally accepted valuation approaches, an income approach and a market approach. Under the income approach, our discounted cash flow analysis includes the following inputs that are not readily available: a discount rate reflective of industry cost of capital, our estimated contract rates, volumes, operating margins, operating and maintenance costs and capital expenditures. Under the market approach, our inputs include EBITDA multiples, which are estimated from recent peer acquisition transactions, and forecasted EBITDA, which incorporates inputs similar to those used under the income approach. If actual results are not consistent with our assumptions and estimates or our assumptions and estimates change due to new information, we may be exposed to future impairment charges. See Notes A, E and F of the Notes to Consolidated Financial Statements in this Annual Report for additional discussion of goodwill, long-lived assets and investments in unconsolidated affiliates. Depreciation Methods and Estimated Useful Lives of Property, Plant and Equipment - Our property, plant and equipment are depreciated using the straight-line method that incorporates management assumptions regarding useful economic lives and residual values. As we place additional assets in service, our estimates related to depreciation expense have become more significant and changes in estimated useful lives of our assets could have a material effect on our results of operations. At the time we place our assets in service, we believe such assumptions are reasonable; however, circumstances may develop that would cause us to change these assumptions, which would change our depreciation expense prospectively. Examples of such circumstances include changes in (i) competition, (ii) laws and regulations that limit the estimated economic life of an asset, (iii) technology that render an asset obsolete, (iv) expected salvage values, (v) results of rate cases or rate settlements on regulated assets and (vi) forecasts of the remaining economic life for the resource basins where our assets are located, if any. For the fiscal years presented in this Form 10-K, no changes were made to the determinations of useful lives that would have a material effect on the timing of depreciation expense in future periods.

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The following discussion and analysis should be read in conjunction with Part I, Item 1, Business, our audited Consolidated Financial Statements and the Notes to Consolidated Financial Statements in this Annual Report.

Natural Gas Liquids Capital Projects - Our Natural Gas Liquids segment invests in capital projects to transport, fractionate, store, deliver to market centers and receive NGL supply from shale and other resource development areas. Our growth strategy is focused around connecting diversified supply basins from the Rocky Mountain region through the Mid-Continent region and the Permian Basin with demand for Purity NGLs from the petrochemical and refining industries and NGL exports in the Gulf Coast. We proactively monitor lead times on materials and equipment used in constructing capital projects, and we enter into procurement agreements for long-lead items for potential projects to plan for future growth. See "Capital Projects" in the "Recent Developments" section for more information on our capital projects. In 2023, we connected two third-party natural gas processing plants in the Permian Basin and one affiliate natural gas processing plant in the Rocky Mountain region.

See "Capital Projects" in the "Recent Developments" section for a discussion of our capital projects. For a discussion of our capital expenditure financing, see "Capital Expenditures" in the "Liquidity and Capital Resources" section. Selected Financial Results and Operating Information - The following tables set forth certain selected financial results and operating information for our Natural Gas Pipelines segment for the periods indicated:

Capital expenditures increased in 2023 due primarily to capital projects, including the Viking compression project. Years Ended December 31, Operating Information (a)202320222021

177 Cost of sales and fuel (exclusive of depreciation and operating costs) (450) Operating costs, excluding noncash compensation adjustments (192)

LIQUIDITY AND CAPITAL RESOURCES General - Our primary sources of cash inflows are operating cash flows, proceeds from our commercial paper program and our $2.5 Billion Credit Agreement, debt issuances and the issuance of common stock for our liquidity and capital resources requirements. In January 2023, we reached an agreement with our insurers to settle all claims for physical damage and business interruption related to the Medford incident. Under the terms of the settlement agreement, we agreed to resolve the claims for total insurance payments of $930 million, $100 million of which was received in 2022. The remaining $830 million was received in the first quarter of 2023. The proceeds serve as settlement for property damage, business interruption claims to the date of settlement and as payment in lieu of future business interruption insurance claims. We expect our cash from operations in 2024 to be impacted by incurred costs resulting from the Medford incident for which we no longer receive business interruption proceeds. We expect our sources of cash inflows to provide sufficient resources to finance our operations, capital expenditures, quarterly cash dividends, maturities of long-term debt, share repurchases and contributions to unconsolidated affiliates. We believe we have sufficient liquidity due to our $2.5 Billion Credit Agreement, which expires in June 2027, and access to $1.0 billion available through our "at-the-market" equity program. As of the date of this report, no shares have been sold through our "at-the-market" equity program. We may manage interest-rate risk through the use of fixed-rate debt, floating-rate debt, Treasury locks and interest-rate swaps. For additional information on our interest-rate swaps, see Note E of the Notes to Consolidated Financial Statements in this Annual Report. Cash Management - At December 31, 2023, we had $338 million of cash and cash equivalents. We use a centralized cash management program that concentrates the cash assets of our nonguarantor operating subsidiaries in joint accounts for the purposes of providing financial flexibility and lowering the cost of borrowing, transaction costs and bank fees. Our centralized cash management program provides that funds in excess of the daily needs of our operating subsidiaries are concentrated, consolidated or otherwise made available for use by other entities within our consolidated group. Our operating subsidiaries participate in this program to the extent they are permitted pursuant to FERC regulations or their operating agreements. Under the cash management program, depending on whether a participating subsidiary has short-term cash surpluses or cash requirements, we provide cash to the subsidiary or the subsidiary provides cash to us. Guarantees - In December 2023, ONEOK assumed the debt obligations of Magellan under its previous debt indentures and Magellan provided a guarantee of the outstanding notes. As of December 31, 2023, Magellan no longer had debt obligations outstanding. We guarantee certain debt securities of ONEOK Partners, and ONEOK Partners, the Intermediate Partnership and Magellan guarantee certain of our debt securities. The guarantees in place for our and ONEOK Partners' indebtedness are full, irrevocable, unconditional and absolute joint and several guarantees to the holders of each series of outstanding securities. Liabilities under the guarantees rank equally in right of payment with all existing and future senior unsecured indebtedness. The Intermediate Partnership holds all of ONEOK Partners' interests and equity in its subsidiaries, which are nonguarantors, and substantially all the assets and operations reside with nonguarantor operating subsidiaries. Magellan holds interests in its subsidiaries, which are nonguarantors, and substantially all the assets and operations reside with nonguarantor operating subsidiaries. Therefore, as allowed under Rule 13-01, we have excluded the summarized financial information for each issuer and guarantor as the combined financial information of the subsidiary issuers and parent guarantor, excluding our ownership of all the interests in ONEOK Partners and Magellan, reflect no material assets, liabilities or results of operations, apart from the guaranteed indebtedness. For additional information on our and ONEOK Partners' indebtedness, please see Note H of the Notes to Consolidated Financial Statements in this Annual Report. Short-term Liquidity - Our principal sources of short-term liquidity consist of cash generated from operating activities, distributions received from our equity-method investments, proceeds from our commercial paper program and our $2.5 Billion Credit Agreement. As of December 31, 2023, we had no borrowings under our $2.5 Billion Credit Agreement and we are in compliance with all covenants. We had working capital (defined as current assets less current liabilities) deficits of $344 million and $503 million as of December 31, 2023, and December 31, 2022, respectively due primarily to current maturities of long-term debt. Generally, our working capital is influenced by several factors, including, among other things: (i) the timing of (a) debt and equity issuances, (b) the funding of capital expenditures, (c) scheduled debt repayments, and (d) accounts receivable and payable; and (ii) the volume and cost of inventory and commodity imbalances. We may have working capital deficits in future periods as our long-term debt becomes current. We do not expect a working capital deficit of this nature to have a material adverse impact to our cash flows or operations.

The following table sets forth our capital expenditures, excluding AFUDC, for the periods indicated: Capital Expenditures202320222021 (Millions of dollars)

We expect total capital expenditures, excluding AFUDC and capitalized interest, of $1.75-$1.95 billion in 2024. Credit Ratings - Our long-term debt credit ratings as of February 20, 2024, are shown in the table below:

Rating AgencyLong-Term RatingShort-Term RatingOutlook Moody'sBaa2Prime-2Stable S&PBBBA-2Stable Fitch BBBF2Stable Our credit ratings, which are investment grade, may be affected by our leverage, liquidity, credit profile or potential transactions. In April 2023, Moody's upgraded the rating on our long-term debt to Baa2 from Baa3, the rating on our short-term debt to Prime-2 from Prime-3 and changed the outlook to stable from positive. The most common criteria for assessment of our credit ratings are the debt-to-EBITDA ratio, interest coverage, business risk profile and liquidity. If our credit ratings were downgraded, our cost to borrow funds under our $2.5 Billion Credit Agreement could increase and a potential loss of access to the commercial paper market could occur. In the event that we are unable to borrow funds under our commercial paper program and there has not been a material adverse change in our business, we would continue to have access to our $2.5 Billion Credit Agreement, which expires in 2027. An adverse credit rating change alone is not a default under our $2.5 Billion Credit Agreement. In the normal course of business, our counterparties provide us with secured and unsecured credit. In the event of a downgrade in our credit ratings or a significant change in our counterparties' evaluation of our creditworthiness, we could be required to provide additional collateral in the form of cash, letters of credit or other negotiable instruments as a condition of continuing to conduct business with such counterparties. We may be required to fund margin requirements with our counterparties with cash, letters of credit or other negotiable instruments. Dividends - Holders of our common stock share equally in any common stock dividends declared by our Board of Directors, subject to the rights of the holders of outstanding preferred stock. In 2023, we paid common stock dividends totaling $3.82 per share, an increase of 2% compared to the 2022 dividend of $3.74 per share. In February 2024, we paid a quarterly common stock dividend of $0.99 per share ($3.96 per share on an annualized basis), an increase of 3.7% compared with the same quarter in the prior year. Our Series E Preferred Stock pays quarterly dividends on each share of Series E Preferred Stock, when, as and if declared by our Board of Directors, at a rate of 5.5% per year. In 2023, we paid dividends for the Series E Preferred Stock of $1 million for the series E preferred stock. In February 2024, we paid quarterly dividends totaling $0.3 million for the Series E Preferred Stock. For the year ended December 31, 2023, our cash flows from operations exceeded dividends paid by $2.6 billion, due in part to the insurance proceeds received from the Medford settlement in 2023. We expect our cash flows from operations to continue to sufficiently fund our cash dividends. To the extent operating cash flows are not sufficient to fund our dividends, we may utilize cash on hand from other sources of short- and long-term liquidity to fund a portion of our dividends.

CASH FLOW ANALYSIS We use the indirect method to prepare our Consolidated Statements of Cash Flows. Under this method, we reconcile net income to cash flows provided by operating activities by adjusting net income for those items that affect net income but do not result in actual cash receipts or payments during the period and for operating cash items that do not impact net income. These reconciling items can include depreciation and amortization, deferred income taxes, impairment charges, allowance for equity funds used during construction, gain or loss on sale of assets, net undistributed earnings from equity-method investments, share-based compensation expense, other amounts and changes in our assets and liabilities not classified as investing or financing activities.

Cash and cash equivalents at end of period$338 $220 $146 Operating Cash Flows - Operating cash flows are affected by earnings from our business activities and changes in our operating assets and liabilities. Changes in commodity prices and demand for our services or products, whether because of general economic conditions, changes in supply, changes in demand for the end products that are made with our products or increased competition from other service providers, could affect our earnings and operating cash flows. Our operating cash flows can also be impacted by changes in our inventory balances, which are driven primarily by commodity prices, supply, demand and the operation of our assets. 2023 vs. 2022 - Cash flows from operating activities, before changes in operating assets and liabilities increased $1.1 billion for the year ended December 31, 2023, compared with the same period in 2022, due primarily to higher operating income resulting from higher volumes from increased production and higher average fee rates in our Natural Gas Gathering and Processing segment, higher exchange services in our Natural Gas Liquids segment, higher transportation and storage services in our Natural Gas Pipelines segment and an increase due to the impact of the Magellan Acquisition in our Refined Products and Crude segment; and insurance proceeds received from the Medford settlement. Please see "Financial Results and Operating Information" for a discussion of operating results. The changes in operating assets and liabilities increased operating cash flows $358 million for the year ended December 31, 2023, compared with a decrease of $58 million for the same period in 2022. This change is due primarily to changes in accounts receivable resulting from the timing of receipt of cash from counterparties and from inventory, both of which vary from period to period, and with changes in commodity prices; offset partially by changes in risk management assets and liabilities.

IMPACT OF NEW ACCOUNTING STANDARDS Information about the impact of new accounting standards is included in Note A of the Notes to Consolidated Financial Statements in this Annual Report.

Consolidated Operations Selected Financial Results - The following table sets forth certain selected financial results for the periods indicated: Years Ended December 31, 2023 vs. 20222022 vs. 2021

Financial Results202320222021$ Increase (Decrease) (Millions of dollars, except per share amounts) Revenues Commodity sales$15,614 $20,976 $15,180 (5,362)5,796

Natural gas processed (BBtu/d) (b) 3,088 2,995 2,612 Average fee rate ($/MMBtu) $1.20 $1.17 $1.10 (a) - Includes volumes for consolidated entities only, and excludes EnLink, as EnLink operating statistics are not meaningful to full-year 2024 operating results.

ethane in ethane/propane mix ($/gallon) $0.01 $0.04 $0.04 (a) - Represents physical raw feed volumes for which we provide transportation and/or fractionation services, and excludes EnLink, as EnLink operating statistics are not meaningful to full-year 2024 operating results. We generally expect ethane volumes to increase or decrease with corresponding increases or decreases in overall NGL production. However, ethane volumes may experience growth or decline greater than corresponding growth or decline in overall NGL production due to ethane economics causing producers to recover or reject ethane. 52 2024 vs. 2023 - While exchange services earnings increased, volumes decreased in 2024 due primarily to the expiration of low-margin contracts in the prior year and lower volumes in the Permian Basin, offset partially by increased production in the Rocky Mountain region at higher fee rates.

Storage, terminals and other revenues 663 177 Cost of sales and fuel (exclusive of depreciation and operating costs) (1,949)(450) Operating costs, excluding noncash compensation adjustments

Refined Products volume shipped (MBbl/d) 1,512 1,547 Crude oil volume shipped (MBbl/d) 783 808 (a) - Includes volumes for consolidated entities only and excludes Medallion and EnLink, as Medallion and EnLink operating statistics are not meaningful to full-year 2024 operating results.

Financing Cash Flows 2024 vs. 2023 - Cash provided by financing activities for the year ended Dec. 31, 2024, increased $18 million compared with the same period in 2023, due primarily to the increase in issuance of senior unsecured notes associated with acquisitions, offset by increased repayments of long-term debt in 2024, including the repayment of the Viking and Guardian Term Loan Agreements and the outstanding borrowings on the EnLink Revolving Credit facility and the EnLink AR Facility, increased dividends paid in 2024 and the repurchase of EnLink's Series C Preferred Units. 59 Cash Flow Analysis for the Year Ended Dec. 31, 2023 vs. 2022 - The cash flow analysis for the year ended Dec. 31, 2023, compared with the year ended Dec. 31, 2022, is included in Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations of our 2023 Annual Report on Form 10-K, which is available via the SEC's website at www.sec.gov and our website at www.oneok.com.

See "Capital Projects" in the "Recent Developments" section for a discussion of our capital projects. For a discussion of our capital expenditure financing, see "Capital Expenditures" in the "Liquidity and Capital Resources" section. Selected Financial Results and Operating Information - The following tables set forth certain selected financial results and operating information for our Natural Gas Pipelines segment for the periods indicated:

(b) - Includes volumes we processed at company-owned and third-party facilities. 2023 vs. 2022 - Our natural gas processed volumes increased due primarily to increased producer activity in the Rocky Mountain and Mid-Continent regions and the impact of winter weather in the Rocky Mountain region in the second and fourth quarters of 2022. Our average fee rate increased due primarily to increased contribution of volumes on higher fee contracts in the Williston Basin and inflation-based escalators in our contracts. Also, for certain fee with POP contracts, our contractual fees increased due to production volumes, delivery pressures or commodity prices relative to specified contractual thresholds.

Natural Gas Liquids Capital Projects - Our Natural Gas Liquids segment invests in capital projects to transport, fractionate, store, deliver to market centers and receive NGL supply from shale and other resource development areas. Our growth strategy is focused around connecting diversified supply basins from the Rocky Mountain region through the Mid-Continent region and the Permian Basin with demand for Purity NGLs from the petrochemical and refining industries and NGL exports in the Gulf Coast. We proactively monitor lead times on materials and equipment used in constructing capital projects, and we enter into procurement agreements for long-lead items for potential projects to plan for future growth. See "Capital Projects" in the "Recent Developments" section for more information on our capital projects. In 2023, we connected two third-party natural gas processing plants in the Permian Basin and one affiliate natural gas processing plant in the Rocky Mountain region.

- 35 21 (35)14 Other778 88 (10)690 98 Adjusted EBITDA$3,045 $2,095 $1,964 950 131 Capital expenditures$818 $581 $307 237 274 (a) - Beginning in 2023, we updated our calculation methodology of adjusted EBITDA to include adjusted EBITDA from our unconsolidated affiliates which resulted in an additional $9 million of adjusted EBITDA in 2023, and we have not restated prior periods. See reconciliation of net income to adjusted EBITDA in the "Non-GAAP Financial Measures" section. Changes in commodity prices and sales volumes affect both revenues and cost of sales and fuel and, therefore, the impact is largely offset between these line items.

160 - - 160 - Equity in net earnings from investments (a) - 108 97 (108)11 Other(2)- (3)(2)3 Adjusted EBITDA $559 $488 $528 71 (40) Capital expenditures$228 $123 $93 105 30 (a) - Beginning in 2023, we updated our calculation methodology of adjusted EBITDA to include adjusted EBITDA from our unconsolidated affiliates which resulted in an additional $42 million of adjusted EBITDA in 2023, and we have not restated prior periods. See reconciliation of net income to adjusted EBITDA in the "Non-GAAP Financial Measures" section.

LIQUIDITY AND CAPITAL RESOURCES General - Our primary sources of cash inflows are operating cash flows, proceeds from our commercial paper program and our $2.5 Billion Credit Agreement, debt issuances and the issuance of common stock for our liquidity and capital resources requirements. In January 2023, we reached an agreement with our insurers to settle all claims for physical damage and business interruption related to the Medford incident. Under the terms of the settlement agreement, we agreed to resolve the claims for total insurance payments of $930 million, $100 million of which was received in 2022. The remaining $830 million was received in the first quarter of 2023. The proceeds serve as settlement for property damage, business interruption claims to the date of settlement and as payment in lieu of future business interruption insurance claims. We expect our cash from operations in 2024 to be impacted by incurred costs resulting from the Medford incident for which we no longer receive business interruption proceeds. We expect our sources of cash inflows to provide sufficient resources to finance our operations, capital expenditures, quarterly cash dividends, maturities of long-term debt, share repurchases and contributions to unconsolidated affiliates. We believe we have sufficient liquidity due to our $2.5 Billion Credit Agreement, which expires in June 2027, and access to $1.0 billion available through our "at-the-market" equity program. As of the date of this report, no shares have been sold through our "at-the-market" equity program. We may manage interest-rate risk through the use of fixed-rate debt, floating-rate debt, Treasury locks and interest-rate swaps. For additional information on our interest-rate swaps, see Note E of the Notes to Consolidated Financial Statements in this Annual Report. Cash Management - At December 31, 2023, we had $338 million of cash and cash equivalents. We use a centralized cash management program that concentrates the cash assets of our nonguarantor operating subsidiaries in joint accounts for the purposes of providing financial flexibility and lowering the cost of borrowing, transaction costs and bank fees. Our centralized cash management program provides that funds in excess of the daily needs of our operating subsidiaries are concentrated, consolidated or otherwise made available for use by other entities within our consolidated group. Our operating subsidiaries participate in this program to the extent they are permitted pursuant to FERC regulations or their operating agreements. Under the cash management program, depending on whether a participating subsidiary has short-term cash surpluses or cash requirements, we provide cash to the subsidiary or the subsidiary provides cash to us. Guarantees - In December 2023, ONEOK assumed the debt obligations of Magellan under its previous debt indentures and Magellan provided a guarantee of the outstanding notes. As of December 31, 2023, Magellan no longer had debt obligations outstanding. We guarantee certain debt securities of ONEOK Partners, and ONEOK Partners, the Intermediate Partnership and Magellan guarantee certain of our debt securities. The guarantees in place for our and ONEOK Partners' indebtedness are full, irrevocable, unconditional and absolute joint and several guarantees to the holders of each series of outstanding securities. Liabilities under the guarantees rank equally in right of payment with all existing and future senior unsecured indebtedness. The Intermediate Partnership holds all of ONEOK Partners' interests and equity in its subsidiaries, which are nonguarantors, and substantially all the assets and operations reside with nonguarantor operating subsidiaries. Magellan holds interests in its subsidiaries, which are nonguarantors, and substantially all the assets and operations reside with nonguarantor operating subsidiaries. Therefore, as allowed under Rule 13-01, we have excluded the summarized financial information for each issuer and guarantor as the combined financial information of the subsidiary issuers and parent guarantor, excluding our ownership of all the interests in ONEOK Partners and Magellan, reflect no material assets, liabilities or results of operations, apart from the guaranteed indebtedness. For additional information on our and ONEOK Partners' indebtedness, please see Note H of the Notes to Consolidated Financial Statements in this Annual Report. Short-term Liquidity - Our principal sources of short-term liquidity consist of cash generated from operating activities, distributions received from our equity-method investments, proceeds from our commercial paper program and our $2.5 Billion Credit Agreement. As of December 31, 2023, we had no borrowings under our $2.5 Billion Credit Agreement and we are in compliance with all covenants. We had working capital (defined as current assets less current liabilities) deficits of $344 million and $503 million as of December 31, 2023, and December 31, 2022, respectively due primarily to current maturities of long-term debt. Generally, our working capital is influenced by several factors, including, among other things: (i) the timing of (a) debt and equity issuances, (b) the funding of capital expenditures, (c) scheduled debt repayments, and (d) accounts receivable and payable; and (ii) the volume and cost of inventory and commodity imbalances. We may have working capital deficits in future periods as our long-term debt becomes current. We do not expect a working capital deficit of this nature to have a material adverse impact to our cash flows or operations.

For additional information on our $2.5 Billion Credit Agreement, see Note H of the Notes to Consolidated Financial Statements in this Annual Report. Long-term Financing - In addition to our principal sources of short-term liquidity discussed above, we expect to fund our longer-term financing requirements by issuing long-term notes, as needed. Other options to obtain financing include, but are not limited to, issuing common stock, loans from financial institutions, issuance of convertible debt securities or preferred equity securities, asset securitization and the sale and lease-back of facilities. We may, at any time, seek to retire or purchase our or ONEOK Partners' outstanding debt through cash purchases and/or exchanges for equity or debt, in open-market repurchases, privately negotiated transactions or otherwise. Such repurchases and exchanges, if any, will be on such terms and prices as we may determine, and will depend on prevailing market conditions, or liquidity requirements, contractual restrictions and other factors. The amounts involved may be material. Debt Issuances - In August 2023, we completed an underwritten public offering of $5.25 billion senior unsecured notes consisting of $750 million, 5.55% senior notes due 2026; $750 million, 5.65% senior notes due 2028; $500 million, 5.80% senior notes due 2030; $1.5 billion, 6.05% senior notes due 2033; and $1.75 billion, 6.625% senior notes due 2053. The net proceeds, after deducting underwriting discounts, commissions and offering expenses, were $5.2 billion. The net proceeds were used to fund the cash consideration and other costs related to the Magellan Acquisition. In connection with the underwritten public offering, we terminated the undrawn commitment letter for the $5.25 billion unsecured 364-day bridge loan facility. Debt Repayments - In 2023, we repurchased in the open market outstanding principal of certain of our senior notes in the amount of $322 million for an aggregate repurchase price of $280 million, including accrued and unpaid interest, with cash on hand. In connection with these open market repurchases, we recognized $41 million of net gains on extinguishment of debt. In November 2023, we made an equity contribution of $91 million to Northern Border, which in combination with an equal contribution from our joint venture partner, was used to partially repay the outstanding balance of its revolving credit facility and fund capital projects. In June 2023, we redeemed our $500 million, 7.5% senior notes due September 2023 at 100% of the principal amount, plus accrued and unpaid interest, with cash on hand. In June 2023, we made an equity contribution of $105 million to Roadrunner, which, in combination with an equal contribution from our joint venture partner, was used to repay Roadrunner's outstanding debt. In February 2023, we redeemed our $425 million, 5.0% senior notes due September 2023 at 100% of the principal amount, plus accrued and unpaid interest, with cash on hand. Equity Issuances - On September 25, 2023, we completed the Magellan Acquisition. Pursuant to the Merger Agreement, each common unit of Magellan was exchanged for a fixed ratio of 0.667 shares of ONEOK common stock and $25.00 of cash, for a total consideration of $14.1 billion. We issued approximately 135 million shares of common stock, with a fair value of approximately $9.0 billion as of the closing date of the Magellan Acquisition. Share Repurchase Program - In January 2024, our Board of Directors authorized a share repurchase program to buy up to $2.0 billion of our outstanding common stock and targets the program to be largely utilized over the next four years. We expect shares to be acquired from time to time in open-market transactions or through privately negotiated transactions at our discretion, subject to market conditions and other factors. We expect any purchases to be funded by cash on hand, cash flow from operations and short-term borrowings. The program will terminate upon completion of the repurchase of $2.0 billion of common stock or on January 1, 2029, whichever occurs first. As of February 20, 2024, no shares have been repurchased under the program. Material Commitments - We have material cash commitments related to our capital expenditures, senior notes and corresponding interest payments, which we expect to fund through our sources of cash inflows discussed above. Our senior notes and interest payments are discussed in Note H of the Notes to Consolidated Financial Statements in this Annual Report. We also have cash commitments related to transportation, storage and other commercial contracts, as well as our financial and physical derivative obligations, which we expect to fund with cash from operations. Capital Expenditures - We proactively monitor lead times on materials and equipment used in constructing capital projects, and we enter into procurement agreements for long-lead items for potential projects to plan for future growth. Our capital expenditures are financed typically through operating cash flows and short- and long-term debt.

Rating AgencyLong-Term RatingShort-Term RatingOutlook Moody'sBaa2Prime-2Stable S&PBBBA-2Stable Fitch BBBF2Stable Our credit ratings, which are investment grade, may be affected by our leverage, liquidity, credit profile or potential transactions. In April 2023, Moody's upgraded the rating on our long-term debt to Baa2 from Baa3, the rating on our short-term debt to Prime-2 from Prime-3 and changed the outlook to stable from positive. The most common criteria for assessment of our credit ratings are the debt-to-EBITDA ratio, interest coverage, business risk profile and liquidity. If our credit ratings were downgraded, our cost to borrow funds under our $2.5 Billion Credit Agreement could increase and a potential loss of access to the commercial paper market could occur. In the event that we are unable to borrow funds under our commercial paper program and there has not been a material adverse change in our business, we would continue to have access to our $2.5 Billion Credit Agreement, which expires in 2027. An adverse credit rating change alone is not a default under our $2.5 Billion Credit Agreement. In the normal course of business, our counterparties provide us with secured and unsecured credit. In the event of a downgrade in our credit ratings or a significant change in our counterparties' evaluation of our creditworthiness, we could be required to provide additional collateral in the form of cash, letters of credit or other negotiable instruments as a condition of continuing to conduct business with such counterparties. We may be required to fund margin requirements with our counterparties with cash, letters of credit or other negotiable instruments. Dividends - Holders of our common stock share equally in any common stock dividends declared by our Board of Directors, subject to the rights of the holders of outstanding preferred stock. In 2023, we paid common stock dividends totaling $3.82 per share, an increase of 2% compared to the 2022 dividend of $3.74 per share. In February 2024, we paid a quarterly common stock dividend of $0.99 per share ($3.96 per share on an annualized basis), an increase of 3.7% compared with the same quarter in the prior year. Our Series E Preferred Stock pays quarterly dividends on each share of Series E Preferred Stock, when, as and if declared by our Board of Directors, at a rate of 5.5% per year. In 2023, we paid dividends for the Series E Preferred Stock of $1 million for the series E preferred stock. In February 2024, we paid quarterly dividends totaling $0.3 million for the Series E Preferred Stock. For the year ended December 31, 2023, our cash flows from operations exceeded dividends paid by $2.6 billion, due in part to the insurance proceeds received from the Medford settlement in 2023. We expect our cash flows from operations to continue to sufficiently fund our cash dividends. To the extent operating cash flows are not sufficient to fund our dividends, we may utilize cash on hand from other sources of short- and long-term liquidity to fund a portion of our dividends.

Consolidated Operations Selected Financial Results - The following table sets forth certain selected financial results for the periods indicated: Years Ended Dec. 31, 2024 vs. 20232023 vs. 2022

Financial Results202420232022$ Increase (Decrease) (Millions of dollars, except per share amounts) Revenues Commodity sales$17,780 $15,614 $20,976 2,166 (5,362)

Capital Projects - Our primary capital projects are outlined in the table below: ProjectScopeApproximateCosts (a) Expected Completion Natural Gas Liquids(In millions)

Exchange service and other revenues514 559 558 (45)1 Transportation and storage revenues207 204 180 3 24 Cost of sales and fuel (exclusive of depreciation and operating costs)(11,994)(11,592)(16,546)402 (4,954)

Operating costs, excluding noncash compensation adjustments(728)(637)(549)91 88 Adjusted EBITDA from unconsolidated affiliates (a) 95 67 - 28 67 Equity in net earnings from investments (a)

Operating Information202420232022 Raw feed throughput (MBbl/d) (a) 1,309 1,359 1,237 Average Conway-to-Mont Belvieu Oil Price Information Service price differential -

Years Ended Dec. 31, 2024 vs. 20232023 vs. 2022 Financial Results202420232022 $ Increase (Decrease) (Millions of dollars) Transportation revenues$523 $423 $409 100 14

(Unaudited) 202420232022 Reconciliation of net income to adjusted EBITDA(Millions of dollars) Net income$3,112 $2,659 $1,722 Interest expense, net of capitalized interest1,371 866 676

Depreciation and amortization1,134 769 626 Income taxes998 838 528 Adjusted EBITDA from unconsolidated affiliates (a)532 264 - Equity in net earnings from investments (a)(439)(202)-

Noncash compensation expense and other 76 49 68 Adjusted EBITDA (a)(b)(c)(d)$6,784 $5,243 $3,620 Reconciliation of segment adjusted EBITDA to adjusted EBITDA

The following table sets forth our capital expenditures, excluding the equity portion of AFUDC, for the periods indicated: Capital Expenditures2024 (a)

We expect total capital expenditures, excluding AFUDC and capitalized interest, of $2.8 - $3.2 billion in 2025. Credit Ratings - Our long-term debt credit ratings as of Feb. 17, 2025, are shown in the table below:

The following table sets forth the changes in cash flows by operating, investing and financing activities for the periods indicated: Years Ended Dec. 31,

Financing activities2,119 2,101 (1,693) Change in cash and cash equivalents395 118 74 Cash and cash equivalents at beginning of period338 220 146 Cash and cash equivalents at end of period$733 $338 $220 Operating Cash Flows - Operating cash flows are affected by earnings from our business activities and changes in our operating assets and liabilities. Changes in commodity prices and demand for our services or products, whether because of general economic conditions, changes in supply, changes in demand for the end products that are made with our products or increased competition from other service providers, could affect our earnings and operating cash flows. Our operating cash flows can also be impacted by changes in our inventory balances, which are driven primarily by commodity prices, supply, demand and the operation of our assets. 2024 vs. 2023 - Cash flows from operating activities, before changes in operating assets and liabilities increased $868 million for the year ended Dec. 31, 2024, compared with the same period in 2023, due primarily to the impact of the Magellan Acquisition in our Refined Products and Crude segment, as discussed in "Financial Results and Operating Information" offset partially by insurance proceeds received from the Medford settlement in 2023. The changes in operating assets and liabilities decreased operating cash flows $43 million for the year ended Dec. 31, 2024, compared with an increase of $358 million for the same period in 2023. This change is due primarily to changes in our legal reserve liability as discussed in Note P of the Notes to Consolidated Financial Statements in this Annual Report, changes in risk management assets and liabilities and changes in accounts receivable resulting from the receipts of cash from counterparties and from inventory, both of which varies from period to period, and with changes in commodity prices. These changes were offset partially by changes in accounts payable, which vary from period to period with changes in commodity prices and from the timing of payments to vendors, suppliers and other third parties.

FINANCIAL RESULTS AND OPERATING INFORMATION How We Evaluate Our Operations Management uses a variety of financial and operating metrics to analyze our performance. Our consolidated financial metrics include: (1) operating income; (2) net income; (3) diluted EPS; and (4) adjusted EBITDA. We evaluate segment operating results using adjusted EBITDA and our operating metrics, which include various volume and rate statistics that are relevant for the respective segment. These operating metrics allow investors to analyze the various components of segment financial results in terms of volumes and rate/price. Management uses these metrics to analyze historical segment financial results and as the key inputs for forecasting and budgeting segment financial results. For additional information on our operating metrics, see the respective segment subsections of this "Financial Results and Operating Information" section. Non-GAAP Financial Measures - Adjusted EBITDA is a non-GAAP measure of our financial performance. Adjusted EBITDA is defined as net income adjusted for interest expense, depreciation and amortization, noncash impairment charges, income taxes, noncash compensation expense and certain other noncash items. Following the Magellan Acquisition, we performed a review of our calculation methodology of adjusted EBITDA and, beginning in 2023, we updated our calculation to include the adjusted EBITDA related to our unconsolidated affiliates using the same recognition and measurement methods used to record equity in net earnings from investments. In prior periods, our calculation included equity in net earnings from investments. This change resulted in an additional $62 million of adjusted EBITDA in 2023, and we have not restated prior periods. Adjusted EBITDA from our unconsolidated affiliates is calculated consistently with the definition above and excludes items such as interest expense, depreciation and amortization, income taxes and other noncash items. Although the amounts related to our unconsolidated affiliates are included in the calculation of adjusted EBITDA, such inclusion should not be understood to imply that we have control over the operations and resulting revenues, expenses or cash flows of such unconsolidated affiliates. We believe this non-GAAP financial measure is useful to investors because it and similar measures are used by many companies in our industry as a measurement of financial performance and is commonly employed by financial analysts and others to evaluate our financial performance and to compare financial performance among companies in our industry. Adjusted EBITDA should not be considered an alternative to net income, EPS or any other measure of financial performance presented in accordance with GAAP. Additionally, this calculation may not be comparable with similarly titled measures of other companies. See reconciliation of net income to adjusted EBITDA in the "Non-GAAP Financial Measures" subsection.

See Notes A, F, G and O of the Notes to Consolidated Financial Statements in this Annual Report for additional discussion of goodwill and intangible assets, long-lived assets and investments in unconsolidated affiliates. Depreciation Methods and Estimated Useful Lives of Property, Plant and Equipment - Our property, plant and equipment are depreciated using the straight-line method that incorporates management assumptions regarding useful economic lives and residual values. As we place additional assets in service or acquire assets as a result of an acquisition or asset purchase, our estimates related to depreciation expense have become more significant and changes in estimated useful lives of our assets could have a material effect on our results of operations. At the time we place our assets in service, we believe such assumptions are reasonable; however, circumstances may develop that would cause us to change these assumptions, which would change our depreciation expense prospectively. Examples of such circumstances include changes in (i) competition, (ii) laws and regulations that limit the estimated economic life of an asset, (iii) technology that render an asset obsolete, (iv) expected salvage values, (v) results of rate cases or rate settlements on regulated assets and (vi) forecasts of the remaining economic life for the resource basins where our assets are located, if any. For the fiscal years presented in this Form 10-K, no 61

Services and other4,751 3,918 2,063 833 1,855 Total revenues33,629 21,698 17,677 11,931 4,021 Cost of sales and fuel (exclusive of items shown separately below)23,373 13,311 11,929 10,062 1,382

Operating Information202520242023 Raw feed throughput (MBbl/d) (a) 1,496 1,309 1,359 Average Conway-to-Mont Belvieu Oil Price Information Service price differential - ethane in ethane/propane mix ($/gallon)

2025 vs. 2024 - Adjusted EBITDA decreased $39 million primarily as a result of the following: •a decrease of $359 million due to the interstate natural gas pipeline divestiture in 2024, offset by •an increase of $253 million due to adjusted EBITDA from EnLink; •an increase of $33 million due to optimization and marketing activity;

Operating Information (a)202520242023 Natural gas transportation capacity contracted (MDth/d) 7,315 8,176 7,743 Transportation capacity contracted91 %97 %96 % (a) - Included volumes for consolidated entities only and excluded EnLink operating statistics in 2024 as they were not meaningful to full-year 2024 operating results. 2025 vs. 2024 - Natural gas transportation capacity decreased due primarily to the interstate natural gas pipeline divestiture in 2024, offset partially by EnLink transportation capacity contracted included in 2025.

For additional information on our indebtedness, see Note G of the Notes to Consolidated Financial Statements in this Annual Report. Short-term Liquidity - Our principal sources of short-term liquidity consist of cash generated from operating activities, distributions received from our unconsolidated affiliates, proceeds from our commercial paper program and our $3.5 Billion Credit Agreement. In February 2025, we amended and restated our $2.5 Billion Credit Agreement to increase the size to $3.5 billion, extend the term to February 2030 and make other nonmaterial modifications. All other terms and conditions remain substantially the same. In September 2025, we increased the size of our commercial paper program to $3.5 billion from $2.5 billion. As of February 16, 2026, we had no borrowings under our $3.5 Billion Credit Agreement, and we are in compliance with all covenants. Upon closing of the EnLink Acquisition on January 31, 2025, the EnLink Revolving Credit Facility was terminated. For additional information on the EnLink Revolving Credit Facility, see Note G of the Notes to Consolidated Financial Statements in this Annual Report. We had working capital (defined as current assets less current liabilities) deficits of $1.9 billion and $481 million as of December 31, 2025, and December 31, 2024, respectively, due primarily to current maturities of long-term debt and short-term borrowings at December 31, 2025, and current maturities of long-term debt at December 31, 2024. Generally, our working capital is influenced by several factors, including, among other things: (i) the timing of (a) debt and equity issuances, (b) the funding of capital expenditures, (c) scheduled debt payments, and (d) accounts receivable and payable; and (ii) the volume and cost of inventory and commodity imbalances. We may have working capital deficits in future periods as our long-term debt becomes current. We do not expect a working capital deficit of this nature to have a material adverse impact to our cash flows or operations.

Diluted EPS$5.17 $5.48 $3.84 (0.31)1.64 Adjusted EBITDA$6,784 $5,243 $3,620 1,541 1,623 Capital expenditures$2,021 $1,595 $1,202 426 393 49 Changes in commodity prices and sales volumes affect both revenues and cost of sales and fuel in our Consolidated Statements of Income and, therefore, the impact is largely offset between these line items. Due to the Medallion Acquisition and EnLink Controlling Interest Acquisition, operating results for these two companies are included in our financial results beginning Nov. 1, 2024 and Oct. 15, 2024, respectively.

Natural Gas Liquids Capital Projects - Our Natural Gas Liquids segment invests in capital projects to transport, fractionate, store, deliver to market centers and receive NGL supply from shale and other resource development areas. Our growth strategy is focused on connecting diversified raw feed supply basins to Purity NGL export, petrochemical and refining demand centers. See "Capital Projects" in the "Recent Developments" section for more information on our capital projects. 51 In 2024, we connected one third-party natural gas processing plant in the Permian Basin to our system, and two third-party natural gas processing plants previously connected to our system were expanded, one in the Permian Basin and one in the Mid-Continent region.

- - 35 (35) Other3 778 88 (775)690 Adjusted EBITDA$2,543 $3,045 $2,095 (502)950 Capital expenditures$987 $818 $581 169 237 (a) - Beginning in 2023, we updated our calculation methodology of adjusted EBITDA to include adjusted EBITDA from our unconsolidated affiliates, which resulted in an additional $9 million of adjusted EBITDA in 2023, and we have not restated prior periods. Changes in commodity prices and sales volumes affect both revenues and cost of sales and fuel and, therefore, the impact is largely offset between these line items.

For a discussion of our capital expenditure financing, see "Capital Expenditures" in the "Liquidity and Capital Resources" section. Interstate Natural Gas Pipeline Divestiture - On Nov. 19, 2024, we entered into a definitive agreement with DT Midstream, Inc. to sell three of our wholly owned interstate natural gas pipeline systems. On Dec. 31, 2024, we completed the sale and recognized a gain of $227 million. Selected Financial Results and Operating Information - The following tables set forth certain selected financial results and operating information for our Natural Gas Pipelines segment for the periods indicated:

(857)(192) Adjusted EBITDA from unconsolidated affiliates 247 36 Other(9)- Adjusted EBITDA$1,892 $465 Capital expenditures$216 $52 (a) - The year ended Dec. 31, 2023, includes results subsequent to the Magellan Acquisition. Changes in commodity prices and sales volumes affect both revenues and cost of sales and fuel in our Consolidated Statements of Income and, therefore, the impact is largely offset between these line items.

Refined Products volume shipped (MBbl/d) 1,512 1,547 Crude oil volume shipped (MBbl/d) 783 808 (a) - Includes volumes for consolidated entities only and excludes Medallion and EnLink, as Medallion and EnLink operating statistics are not meaningful to full-year 2024 operating results.

LIQUIDITY AND CAPITAL RESOURCES General - Our primary sources of cash inflows are operating cash flows, proceeds from our commercial paper program and our $3.5 Billion Credit Agreement, debt issuances and the issuance of common stock for our liquidity and capital resources requirements. We expect our sources of cash inflows to provide sufficient resources to finance our operations, capital expenditures, quarterly cash dividends, maturities of long-term debt, share repurchases and contributions to unconsolidated affiliates. We believe we have sufficient liquidity due to our $3.5 Billion Credit Agreement, which expires in February 2030, and access to $1.0 billion available through our "at-the-market" equity program. As of Feb. 17, 2025, no shares have been sold through our "at-the-market" equity program. 55 We may manage interest-rate risk through the use of fixed-rate debt, floating-rate debt, Treasury locks and interest-rate swaps. For additional information on our interest-rate swaps, see Note E of the Notes to Consolidated Financial Statements in this Annual Report. Cash Management - At Dec. 31, 2024, we had $733 million of cash and cash equivalents. For our wholly owned subsidiaries, we use a centralized cash management program that concentrates the cash assets of our wholly owned nonguarantor operating subsidiaries in joint accounts for the purposes of providing financial flexibility and lowering the cost of borrowing, transaction costs and bank fees. Our centralized cash management program provides that funds in excess of the daily needs of our operating subsidiaries are concentrated, consolidated or otherwise made available for use by other entities within our consolidated group. Our operating subsidiaries participate in this program to the extent they are permitted pursuant to FERC regulations or their operating agreements. Under the cash management program, depending on whether a participating subsidiary has short-term cash surpluses or cash requirements, we provide cash to the subsidiary or the subsidiary provides cash to us. In December 2024, we entered into an agreement to provide revolving unsecured loans to EnLink through a promissory note at an interest rate of 4.85% at Dec. 31, 2024. This is a floating rate agreement which bears interest at ONEOK's current short-term borrowing rate plus 0.25%. At Dec. 31, 2024, we held a promissory note receivable of $510 million, which was eliminated in consolidation. Interest earned on this agreement was not material. Following the EnLink Acquisition, completed on Jan. 31, 2025, we effectively terminated this agreement as EnLink operating subsidiaries are wholly owned and now participate in the cash management program described above. Guarantees - ONEOK, ONEOK Partners, the Intermediate Partnership and Magellan (Obligated Group) have cross guarantees in place for ONEOK's and ONEOK Partners' indebtedness. These guarantees in place for our and ONEOK Partners' indebtedness are full, irrevocable, unconditional and absolute joint and several guarantees to the holders of each series of outstanding securities. Liabilities under the guarantees rank equally in right of payment with all existing and future senior unsecured indebtedness. The Intermediate Partnership holds all of ONEOK Partners' interests and equity in its subsidiaries, which are nonguarantors, and substantially all the assets and operations reside with nonguarantor operating subsidiaries. Magellan holds interests in its subsidiaries, which are nonguarantors, and substantially all the assets and operations reside with nonguarantor operating subsidiaries. At Dec. 31, 2024, EnLink was a subsidiary of ONEOK, but did not guarantee ONEOK's or ONEOK Partners' indebtedness and was excluded from the Obligated Group. EnLink and EnLink Partners also had outstanding debt securities that were not guaranteed by ONEOK as of Dec. 31, 2024. At the completion of the EnLink Acquisition on Jan. 31, 2025, ONEOK assumed the outstanding debt of EnLink and EnLink Partners (the Assumed Debt) such that EnLink and EnLink Partners were each released from all debt obligations, and provided a guarantee for our and ONEOK Partners' indebtedness to the holders of each series of outstanding securities, including for the Assumed Debt. EnLink and EnLink Partners are now included in the Obligated Group. As of the date of this report, the combined financial information of subsidiary issuers and parent guarantors, excluding our ownership of all interest in ONEOK Partners, Magellan and EnLink, reflect no material assets or liabilities or results of operations, apart from guaranteed indebtedness and therefore, we have excluded the summarized financial information for each issuer and guarantor.

For additional information on our $3.5 Billion Credit Agreement, see Note H of the Notes to Consolidated Financial Statements in this Annual Report. Long-term Financing - In addition to our principal sources of short-term liquidity discussed above, we expect to fund our longer-term financing requirements by issuing long-term notes, as needed. Other options to obtain financing include, but are not limited to, issuing common stock, loans from financial institutions, issuance of convertible debt securities or preferred equity securities, asset securitization and the sale and lease-back of facilities. We may, at any time, seek to retire or purchase our or ONEOK Partners' outstanding debt through cash purchases and/or exchanges for equity or debt, in open-market repurchases, privately negotiated transactions or otherwise. Such repurchases and exchanges, if any, will be on such terms and prices as we may determine, and will depend on prevailing market conditions, or liquidity requirements, contractual restrictions and other factors. The amounts involved may be material. Debt Issuances - In September 2024, we completed an underwritten public offering of $7.0 billion senior unsecured notes consisting of senior notes of the following tenors: $1.25 billion, 4.25% senior notes due 2027; $600 million, 4.4% senior notes due 2029; $1.25 billion, 4.75% senior notes due 2031; $1.6 billion, 5.05% senior notes due 2034; $1.5 billion, 5.7% senior notes due 2054; and $800 million, 5.85% senior notes due 2064. The net proceeds, after deducting underwriting discounts, commissions and offering expenses, were $6.9 billion. The net proceeds from this offering were used to fund the EnLink Controlling Interest Acquisition and the Medallion Acquisition, purchase additional interests in a Medallion joint venture owned by a separate third party, to pay fees and expenses related to the acquisitions and to repay outstanding indebtedness. Debt Repayments - In December 2024, we repaid $120 million of borrowings under the Guardian Term Loan Agreement and $60 million of borrowings under the Viking Term Loan Agreement, plus accrued and unpaid interest, with cash on hand, as part of the interstate natural gas pipeline divestiture. In December 2024, we redeemed our $500 million, 4.9% senior notes due March 2025 at 100% of the principal amount, plus accrued and unpaid interest, with cash on hand.

We expect total capital expenditures, excluding AFUDC and capitalized interest, of $2.8 - $3.2 billion in 2025. Credit Ratings - Our long-term debt credit ratings as of Feb. 17, 2025, are shown in the table below:

Table of Contents ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The following discussion and analysis should be read in conjunction with Part I, Item 1, Business, our audited Consolidated Financial Statements and the Notes to Consolidated Financial Statements in this Annual Report.

FINANCIAL RESULTS AND OPERATING INFORMATION How We Evaluate Our Operations Management uses a variety of financial and operating metrics to analyze our performance. Our consolidated financial metrics include: (1) operating income; (2) net income; (3) diluted EPS; and (4) adjusted EBITDA. We evaluate segment operating results using adjusted EBITDA and our operating metrics, which include various volume and rate statistics that are relevant for the respective segment. These operating metrics allow investors to analyze the various components of segment financial results in terms of volumes and rate/price. Management uses these metrics to analyze historical segment financial results and as the key inputs for forecasting and budgeting segment financial results. For additional information on our operating metrics, see the respective segment subsections of this "Financial Results and Operating Information" section. Non-GAAP Financial Measures - Adjusted EBITDA is a non-GAAP measure of our financial performance. Adjusted EBITDA is defined as net income adjusted for interest expense, depreciation and amortization, noncash impairment charges, income taxes, noncash compensation expense and certain other noncash items. Our calculation includes adjusted EBITDA related to our unconsolidated affiliates using the same recognition and measurement methods used to record equity in net earnings from investments. Adjusted EBITDA from our unconsolidated affiliates is calculated consistently with the definition above and excludes items such as interest expense, depreciation and amortization, income taxes and other noncash items. Although the amounts related to our unconsolidated affiliates are included in the calculation of adjusted EBITDA, such inclusion should not be understood to imply that we have control over the operations and resulting revenues, expenses or cash flows of such unconsolidated affiliates. We believe this non-GAAP financial measure is useful to investors because it and similar measures are used by many companies in our industry as a measurement of financial performance and is commonly employed by financial analysts and others to evaluate our financial performance and to compare financial performance among companies in our industry. Adjusted EBITDA should not be considered an alternative to net income, EPS or any other measure of financial performance presented in accordance with GAAP. Additionally, this calculation may not be comparable with similarly titled measures of other companies. See reconciliation of net income to adjusted EBITDA in the "Non-GAAP Financial Measures" subsection.

Consolidated Operations Selected Financial Results - The following table sets forth certain selected financial results for the periods indicated: Years Ended December 31,2025 vs. 20242024 vs. 2023

Financial Results202520242023$ Increase (Decrease) (Millions of dollars, except per share amounts) Revenues Commodity sales$28,878 $17,780 $15,614 11,098 2,166

Additional information regarding our financial results and operating information is provided in the following discussion for each of our segments. Selected Financial Results and Operating Information for the Year Ended December 31, 2024 vs. 2023 - The consolidated and segment financial results and operating information for the year ended December 31, 2024, compared with the year ended December 31, 2023, are included in Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations of our 2024 Annual Report on Form 10-K, which is available via the SEC's website at www.sec.gov and our website at www.oneok.com.

(b) - Included volumes we processed at company-owned and third-party facilities. 2025 vs. 2024 - Our natural gas processed volumes increased in 2025 due to incremental volumes from EnLink and increased production in the Mid-Continent and Rocky Mountain regions.

Exchange service and other revenues347 514 559 (167)(45) Transportation and storage revenues258 207 204 51 3 Cost of sales and fuel (exclusive of depreciation and operating costs)(12,533)(11,994)(11,592)539 402

Capital Projects - Our primary capital projects are outlined in the table below: Project ScopeApproximateCost (a)Expected Completion Natural Gas Gathering and Processing(In millions)

$0.02 $0.01 $0.04 (a) - Represents physical raw feed volumes for which we provided transportation and/or fractionation services, and excluded EnLink operating statistics in 2024 as they were not meaningful to full-year 2024 operating results. We generally expect ethane volumes to increase or decrease with corresponding increases or decreases in overall NGL production. However, ethane volumes may experience growth or decline greater than corresponding growth or decline in overall NGL production due to ethane economics causing producers to recover or reject ethane. 2025 vs. 2024 - Volumes increased in 2025 due primarily to incremental volumes from EnLink, higher ethane volumes in the Rocky Mountain region and higher volumes on short-term fractionation contracts in the Gulf Coast region, offset partially by lower ethane volumes in the Mid-Continent region.

(Unaudited)202520242023 Reconciliation of net income to adjusted EBITDA(Millions of dollars) Net income$3,462 $3,112 $2,659 Interest expense, net of capitalized interest1,783 1,371 866

Noncash compensation expense and other (a)103 76 49 Adjusted EBITDA (b)(c)(d)$8,020 $6,784 $5,243 Reconciliation of segment adjusted EBITDA to adjusted EBITDA

Segment adjusted EBITDA: Natural Gas Gathering and Processing$2,138 $1,484 $1,244 Natural Gas Liquids (d)2,779 2,543 3,045 Natural Gas Pipelines (c)861 900 559

(a) - Amounts redeemed at 100% of principal plus accrued and unpaid interest. (b) - In 2025, we repurchased in the open market certain of our senior notes in the principal amount of $789 million for an aggregate repurchase price of $681 million, including accrued and unpaid interest. In connection with these open market repurchases, we recognized $106 million of net gains on extinguishment of debt which is included in other income, net in our Consolidated Statement of Income for the year ended December 31, 2025. Equity Issuances - On May 28, 2025, we completed the Delaware Basin JV Acquisition. Pursuant to the purchase agreement, we issued approximately 4.9 million shares of ONEOK common stock to the seller with a fair value of $391 million as of the closing date. On January 31, 2025, we completed the EnLink Acquisition. Pursuant to the EnLink Merger Agreement, each publicly held common unit of EnLink was exchanged for a fixed ratio of 0.1412 shares of ONEOK common stock, including EnLink Units that were exchanged for all previously outstanding Series B Preferred Units immediately prior to closing. We issued 41 million shares of common stock with a fair value of $4.0 billion. There are no remaining Series B Preferred Units outstanding. Share Repurchase Program - Our Board of Directors authorized a share repurchase program to buy up to $2.0 billion of our outstanding common stock. The program will terminate upon completion of the repurchase of the $2.0 billion of common stock or on January 1, 2029, whichever occurs first. For the year ended December 31, 2025, we repurchased $62 million of our outstanding common stock with cash on hand. Material Commitments - We have material cash commitments related to our capital expenditures, senior notes and corresponding interest payments, which we expect to fund through our sources of cash inflows discussed above. Our senior notes and interest payments are discussed in Note G of the Notes to Consolidated Financial Statements in this Annual Report. We also have cash commitments related to transportation, storage and other commercial contracts, as well as our financial and physical derivative obligations, which we expect to fund with cash from operations. Capital Expenditures - We proactively monitor lead times on materials and equipment used in constructing capital projects, and we enter into procurement agreements for long-lead items for potential projects to plan for future growth. Our capital expenditures are financed typically through operating cash flows and short- and long-term debt.

Rating AgencyLong-term RatingShort-term RatingOutlook Moody'sBaa2Prime-2Stable S&PBBBA-2Stable FitchBBBF2Stable Our credit ratings, which are investment grade, may be affected by our leverage, liquidity, credit profile or potential transactions. The most common criteria for assessment of our credit ratings are the debt-to-EBITDA ratio, interest coverage, business risk profile and liquidity. If our credit ratings were downgraded, our cost to borrow funds under our $3.5 Billion Credit Agreement could increase, and a potential loss of access to the commercial paper market could occur. In the event that we are unable to borrow funds under our commercial paper program and there has not been a material adverse change in our business, we would continue to have access to our $3.5 Billion Credit Agreement, which expires in 2030. An adverse credit rating change alone is not a default under our $3.5 Billion Credit Agreement. In the normal course of business, our counterparties provide us with secured and unsecured credit. In the event of a downgrade in our credit ratings or a significant change in our counterparties' evaluation of our creditworthiness, we could be required to provide additional collateral in the form of cash, letters of credit or other negotiable instruments as a condition of continuing to conduct business with such counterparties. We may be required to fund margin requirements with our counterparties with cash, letters of credit or other negotiable instruments. Dividends - Holders of our common stock share equally in any common stock dividends declared by our Board of Directors. In 2025, we paid common stock dividends totaling $4.12 per share, an increase of 4% compared to the 2024 dividend of $3.96 per share. In February 2026, we paid a quarterly common stock dividend of $1.07 per share ($4.28 per share on an annualized basis), an increase of 4% compared with the same quarter in the prior year. For the year ended December 31, 2025, our cash flows from operations exceeded dividends paid by $3.0 billion. We expect our cash flows from operations to continue to sufficiently fund our cash dividends. To the extent operating cash flows are not sufficient to fund our dividends, we may utilize cash on hand from other sources of short- and long-term liquidity to fund a portion of our dividends.

CASH FLOW ANALYSIS We use the indirect method to prepare our Consolidated Statements of Cash Flows. Under this method, we reconcile net income to cash flows provided by operating activities by adjusting net income for those items that affect net income but do not result in actual cash receipts or payments during the period and for operating cash items that do not impact net income. These reconciling items can include depreciation and amortization, deferred income taxes, impairment charges, allowance for equity funds used during construction, gain or loss on sale of business and assets, net undistributed earnings from unconsolidated affiliates, share-based compensation expense, other amounts and changes in our assets and liabilities not classified as investing or financing activities.

The following table sets forth the changes in cash flows by operating, investing and financing activities for the periods indicated: Years Ended December 31,

Financing activities(2,503)2,119 2,101 Change in cash and cash equivalents(655)395 118 Cash and cash equivalents at beginning of period733 338 220 Cash and cash equivalents at end of period$78 $733 $338 Operating Cash Flows - Operating cash flows are affected by earnings from our business activities and changes in our operating assets and liabilities. Changes in commodity prices and demand for our services or products, whether because of general economic conditions, changes in supply, changes in demand for the end products that are made with our products or increased competition from other service providers, could affect our earnings and operating cash flows. Our operating cash flows can also be impacted by changes in our inventory balances, which are driven primarily by commodity prices, supply, demand and the operation of our assets. 2025 vs. 2024 - Cash flows from operating activities, before changes in operating assets and liabilities increased $1.0 billion for the year ended December 31, 2025, compared with the same period in 2024, due primarily to the impact of the EnLink and Medallion Acquisitions as discussed in "Financial Results and Operating Information." The changes in operating assets and liabilities decreased operating cash flows $380 million for the year ended December 31, 2025, compared with a decrease of $43 million for the same period in 2024. This change is due primarily to changes in accounts receivable resulting from the growth of our operations and the timing of the receipt of cash from counterparties and from inventory, both of which vary from period to period, and with changes in commodity prices. These changes were offset partially by changes in accounts payable resulting from the growth of our operations and the timing of payments to vendors, suppliers and other third parties, which vary from period to period, and with changes in commodity prices.

Financing Cash Flows 2025 vs. 2024 - Cash from financing activities for the year ended December 31, 2025, decreased $4.6 billion compared with the same period in 2024, due primarily to the issuance of senior unsecured notes associated with acquisitions in 2024, increased extinguishment of long-term debt in 2025, cash paid for the Delaware Basin JV Acquisition and increased dividends paid in 2025, offset partially by the issuance of senior unsecured notes in August 2025 and an increase in short-term borrowings in 2025. Cash Flow Analysis for the Year Ended December 31, 2024 vs. 2023 - The cash flow analysis for the year ended December 31, 2024, compared with the year ended December 31, 2023, is included in Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations of our 2024 Annual Report on Form 10-K, which is available via the SEC's website at www.sec.gov and our website at www.oneok.com.