Oneok (OKE): financials, SEC filings and peers
Oneok (OKE) is an oil & gas storage & transportation company in the Energy sector of the S&P 500, headquartered in Tulsa, Oklahoma.
It was founded in 1906 and joined the S&P 500 on March 15, 2010.
Its fiscal year ends in December, and its shares trade on the NYSE.
In its SEC filings it is classified as “Natural Gas Transmisison & Distribution”.
Oneok at a glance
- Revenue (12 months)
- $39.4B
- Revenue growth
- +40.8%
- Operating margin
- 15.5%
- Net income (12 months)
- $3.7B
- Free cash flow (12 months)
- $2.9B
- Cash
- $161M
- Debt
- $33.0B
- Diluted EPS (12 months)
- $5.80
Twelve months to June 30, 2026, from the 10-Q filed August 4, 2026.
Latest twelve months
Over the twelve months to June 30, 2026, Oneok reported revenue of $39.4 billion, up a strong 40.8% from $28.0 billion a year earlier.
Its operating margin was 15.5%, down 3.6 percentage points from a year earlier: for every $100 of sales, about $16 was left as operating profit.
Net income was $3.7 billion (9.3% of revenue), 18.2% higher than a year earlier.
Operating cash flow was $6.2 billion and capital spending $3.3 billion, leaving free cash flow of $2.9 billion (7.4% of revenue).
At the end of the period it held $161 million in cash and $33.0 billion in debt, a net debt position of $32.8 billion.
Five-year trend
- Revenue went from $8.5 billion in fiscal 2020 to $33.6 billion in fiscal 2025, about 31.5% a year.
- Operating margin has been steady, around 17.1%.
- Free cash flow was negative in 1 of the last 6 fiscal years.
| Fiscal year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | $16.5B | $22.4B | $17.7B | $21.7B | $33.6B |
| Revenue growth | 93.6% | 35.3% | -21.0% | 22.7% | 55.0% |
| Operating margin | 15.7% | 12.5% | 23.0% | 23.0% | 17.1% |
| Net income | $1.5B | $1.7B | $2.7B | $3.0B | $3.4B |
| Free cash flow | $1.8B | $1.7B | $2.8B | $2.9B | $2.4B |
| Diluted EPS | $3.35 | $3.84 | $5.48 | $5.17 | $5.42 |
Fiscal years as reported in Oneok’s 10-K filings. Free cash flow is operating cash flow minus capital spending.
Recent SEC filings
- 8-K filed September 15, 2026 — Material agreement; Regulation FD disclosure
- 8-K12B filed September 10, 2026 — Material agreement; New debt obligation
- 8-K filed August 31, 2026 — Material agreement; Unregistered share sale
- 10-Q filed August 4, 2026 — quarterly report
- 8-K filed August 3, 2026 — Acquisition or sale of assets; Regulation FD disclosure
- 8-K filed May 21, 2026 — Shareholder vote results
- 10-Q filed April 29, 2026 — quarterly report
- 8-K filed April 28, 2026 — Earnings results; Regulation FD disclosure
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Questions about Oneok
Is Oneok's revenue growing?
Yes. Revenue for the twelve months to June 30, 2026 was $39.4 billion, up 40.8% from a year earlier, according to its SEC filings.
Is Oneok profitable?
Yes. It earned $3.7 billion in net income over the twelve months to June 30, 2026, a net margin of 9.3%.
Does Oneok have more cash or more debt?
At June 30, 2026 it had $161 million in cash and $33.0 billion in debt, so more debt than cash.
When did Oneok last file financial results?
Its latest quarterly report (10-Q) was filed with the SEC on August 4, 2026.
Which companies are similar to Oneok?
In the S&P 500, Oneok is grouped in Oil & Gas Storage & Transportation within the Energy sector. Kinder Morgan (KMI), Targa Resources (TRGP), Williams Companies (WMB) are in the same group.
Understand the numbers
Source: Oneok’s filings with the U.S. Securities and Exchange Commission (EDGAR), retrieved September 27, 2026. Figures are as reported by the company and may be restated. This page is for information only and is not financial advice.