Oneok

3, 2026 Page 2 -more- Total 2026 capital expenditure guidance remains unchanged at approximately $2.7 billion to $3.2 billion.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

3, 2026 Page 3 -more- In July 2026, ONEOK declared a quarterly dividend of $1.07 per share, or $4.28 per share annualized.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

Natural Gas Pipelines Segment Three Months Ended Six Months Ended June 30, June 30, Natural Gas Pipelines Segment 2026 2025 2026 2025 (Millions of dollars) Adjusted EBITDA $ 297 $ 188 $ 636 $ 400 Capital expenditures $ 15 $ 52 $ 61 $ 114 ONEOK Announces Higher Second-Quarter 2026 Earnings: Net Income up 13%, Adjusted EBITDA up 7% Aug.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

Refined Products and Crude Operating costs, excluding noncash compensation adjustments $ 258 $ 210 $ 478 $ 427 Depreciation and amortization $ 112 $ 106 $ 221 $ 222 Adjusted EBITDA from unconsolidated affiliates $ 35 $ 34 $ 59 $ 82 Adjusted EBITDA $ 627 $ 557 $ 1,119 $ 1,028 Refined products volume shipped (MBbl/d) (a) 1,629 1,503 1,598 1,452 Crude oil volume shipped (MBbl/d) (a) 1,766 1,782 1,690 1,814 Capital expenditures $ 191 $ 184 $ 371 $ 325 (a) Includes volumes for consolidated entities only.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

Natural Gas Gathering and Processing Operating costs, excluding noncash compensation adjustments $ 251 $ 229 $ 487 $ 479 Depreciation and amortization $ 126 $ 122 $ 261 $ 248 Adjusted EBITDA from unconsolidated affiliates $ 1 $ 1 $ 2 $ 3 Adjusted EBITDA $ 546 $ 540 $ 1,013 $ 1,031 Natural gas processed (MMcf/d) (a) 5,707 5,573 5,585 5,412 Capital expenditures $ 185 $ 341 $ 502 $ 582 (a) Includes volumes for consolidated entities and volumes ONEOK processed at company-owned and third-party facilities.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

Natural Gas Pipelines Operating costs, excluding noncash compensation adjustments $ 62 $ 53 $ 119 $ 104 Depreciation and amortization $ 28 $ 25 $ 53 $ 48 Adjusted EBITDA from unconsolidated affiliates $ 72 $ 55 $ 150 $ 116 Adjusted EBITDA $ 297 $ 188 $ 636 $ 400 Natural gas transportation capacity contracted (MDth/d) (a) 7,735 7,206 7,786 7,254 Transportation capacity contracted (a) 92 % 90 % 92 % 90 % Capital expenditures $ 15 $ 52 $ 61 $ 114 (a) Includes capacity contracted for consolidated entities only.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

"Several strategic growth projects across our footprint are nearing completion, expanding connectivity across key markets and strengthening our ability to serve customers and communities," added Norton.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

Such forward-looking statements include, but are not limited to, future financial and operating results, our plans, objectives, expectations and intentions, and other statements that are not historical facts, including future results of operations, projected cash flow and liquidity, business strategy, expected synergies or cost savings, and other plans and objectives for future operations.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

Credit Risk - We monitor the creditworthiness of our counterparties and compliance with policies and limits established by our Risk Oversight and Strategy Committee.

SEC original ↗Oneok — 10-Q Quarterly report10-QOct 28, 2026

Among other things, these covenants include maintaining a ratio of consolidated net indebtedness to adjusted EBITDA (EBITDA, as defined in our $ 3.5 Billion Credit Agreement, adjusted for all noncash items and increased for projected EBITDA from certain lender-approved capital expansion projects).

SEC original ↗Oneok — 10-Q Quarterly report10-QOct 28, 2026

Forward-looking statements are based on current expectations, estimates and assumptions that involve a number of risks and uncertainties, many of which are beyond our control, and are not guarantees of future results.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

These risks and uncertainties include, without limitation, the following: ONEOK Announces Higher Second-Quarter 2026 Earnings: Net Income up 13%, Adjusted EBITDA up 7% Aug.

SEC original ↗Oneok — Earnings release (8-K exhibit)EX-99Aug 3, 2026

Legal Proceedings 45 Item 1A.

SEC original ↗Oneok — 10-Q Quarterly report10-QOct 28, 2026

Management does not believe that, based on currently known information, a material risk of noncompliance with these laws and regulations exists that will adversely affect our consolidated results of operations, financial condition or cash flows.

SEC original ↗Oneok — 10-Q Quarterly report10-QOct 28, 2026

Legal Proceedings - We are a party to various legal proceedings that have arisen in the normal course of our operations.

SEC original ↗Oneok — 10-Q Quarterly report10-QOct 28, 2026