OKEOneok

We believe it is likely that future governmental legislation and/or regulation on the federal, state and regional levels, may further require us to limit GHG emissions associated with our operations, pay additional fees associated with our GHG emissions or purchase allowances for such emissions. For example, In the past, the Inflation Reduction Act of 2022 (IRA) directs had directed the EPA to impose and collect payment of “Waste Emissions Charges,” or “Methane Fees,” for specific facilities that report more than 25,000 metric tons of carbon dioxide equivalent of GHG emissions per year and have a methane emissions intensity in excess of the relevant statutory threshold. Based on text in the IRA and a related rule that the EPA finalized in November 2024 to implement the Methane Fee program, we expect to begin paying Methane Fees in 2025 (for 2024 reported emissions) for applicable facilities. In January 2025, industry associations and certain states challenged the Waste Emissions Charge rule in the D.C. Circuit, and However, the new administration issued an executive order directing the heads of all federal agencies to identify and begin the processes to suspend, revise or rescind all agency actions that are unduly burdensome on the identification, development or use of domestic energy resources. Consequently, future implementation and enforcement of these rules remain uncertain at this time. Methane Fees, if implemented, and other legislative and/or regulatory initiatives could make some of our activities uneconomic to maintain or operate. However, we cannot predict precisely what form these future legislative and/or regulatory initiatives will take, the stringency of such initiatives, when they will become effective or the impact on our capital expenditures, competitive position and results of operations. Further, we may not be able to pass on the higher costs to our customers or recover all costs related to complying with GHG legislative and/or regulatory requirements. Our future results of operations, financial position or cash flows could be affected adversely if such costs are not recovered or otherwise The One Big Beautiful Bill Act, passed on to our customers. July 4, 2025,

Capital Projects - Our primary capital projects are outlined in the table below: Project Scope Approximate Expected Completion Costs Cost (a) Natural Gas Liquids Gathering and Processing (In millions) MB-6 fractionator 125 MBbl/d NGL fractionator in Mont Belvieu, Texas $550 Completed West Texas NGL pipeline expansion Increase capacity via pipeline looping Bighorn plant 300 MMcf/d processing plant with carbon dioxide treater in the Permian Basin $520 Completed $365 Mid-2027 Natural Gas Liquids Elk Creek pipeline expansion Increase capacity to 435 MBbl/d out of the Rocky Mountain region $355 Completed (b) Medford fractionator Rebuild our 210 MBbl/d NGL fractionation facility in Medford, Oklahoma $385 $485 (b) Texas City Logistics export terminal (c) 400 MBbl/d liquified petroleum gas export terminal in Texas City, Texas $700 Early 2028 MBTC Pipeline 24-inch pipeline from Mont Belvieu, Texas, storage facility to the new Texas City, Texas, export terminal $280 Early 2028 Natural Gas Pipelines Eiger Express Pipeline (c) 450-mile, 48-inch natural gas pipeline from the Permian Basin to Katy, Texas $350 Mid-2028 Refined Products and Crude Greater Denver pipeline expansion Increase total system capacity by 35 MBbl/d and additional expansion capabilities $480 Mid-2026