Atmos Energy (ATO): financials, SEC filings and peers
Atmos Energy (ATO) is a gas utilities company in the Utilities sector of the S&P 500, headquartered in Dallas, Texas.
It was founded in 1906 and joined the S&P 500 on February 15, 2019.
Its fiscal year ends in September, and its shares trade on the NYSE.
In its SEC filings it is classified as “Natural Gas Distribution”.
Atmos Energy at a glance
- Revenue (12 months)
- $4.9B
- Revenue growth
- +6.5%
- Operating margin
- 37.0%
- Net income (12 months)
- $1.4B
- Free cash flow (12 months)
- −$2.0B
- Cash
- $521M
- Debt
- $10.3B
- Diluted EPS (12 months)
- $8.40
Twelve months to June 30, 2026, from the 10-Q filed August 5, 2026.
Latest twelve months
Over the twelve months to June 30, 2026, Atmos Energy reported revenue of $4.9 billion, about the same as a year earlier (+6.5%).
Its operating margin was 37.0%, up 4.0 percentage points from a year earlier: for every $100 of sales, about $37 was left as operating profit.
Net income was $1.4 billion (28.5% of revenue), 21.1% higher than a year earlier.
Operating cash flow was $2.0 billion and capital spending $4.0 billion, leaving free cash flow of −$2.0 billion (-41.1% of revenue). Capital spending equal to 82% of revenue is high; the company is investing heavily.
At the end of the period it held $521 million in cash and $10.3 billion in debt, a net debt position of $9.8 billion.
The diluted share count rose 5.1% in a year, which dilutes existing shareholders.
Five-year trend
- Revenue went from $2.8 billion in fiscal 2020 to $4.7 billion in fiscal 2025, about 10.8% a year.
- Operating margin widened from 29.2% to 33.2% over the same years.
- Free cash flow was negative in 5 of the last 6 fiscal years.
| Fiscal year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | $3.4B | $4.2B | $4.3B | $4.2B | $4.7B |
| Revenue growth | 20.8% | 23.3% | 1.8% | -2.6% | 12.9% |
| Operating margin | 26.6% | 21.9% | 25.0% | 32.5% | 33.2% |
| Net income | $666M | $774M | $886M | $1.0B | $1.2B |
| Free cash flow | −$3.1B | −$1.5B | $654M | −$1.2B | −$1.5B |
| Diluted EPS | $5.12 | $5.60 | $6.10 | $6.83 | $7.46 |
Fiscal years as reported in Atmos Energy’s 10-K filings. Free cash flow is operating cash flow minus capital spending.
Recent SEC filings
- 8-K filed August 10, 2026 — Executive or director change; Regulation FD disclosure
- 10-Q filed August 5, 2026 — quarterly report
- 8-K filed August 5, 2026 — Earnings results
- 8-K filed June 18, 2026 — Material agreement
- 8-K filed June 18, 2026 — Other event
- 10-Q filed May 6, 2026 — quarterly report
- 8-K filed May 6, 2026 — Earnings results
- 8-K filed March 30, 2026 — Material agreement; New debt obligation
Companies like Atmos Energy
Atmos Energy is the only S&P 500 company in Gas Utilities.
More from Utilities
Questions about Atmos Energy
Is Atmos Energy's revenue growing?
Yes. Revenue for the twelve months to June 30, 2026 was $4.9 billion, up 6.5% from a year earlier, according to its SEC filings.
Is Atmos Energy profitable?
Yes. It earned $1.4 billion in net income over the twelve months to June 30, 2026, a net margin of 28.5%.
Does Atmos Energy have more cash or more debt?
At June 30, 2026 it had $521 million in cash and $10.3 billion in debt, so more debt than cash.
When did Atmos Energy last file financial results?
Its latest quarterly report (10-Q) was filed with the SEC on August 5, 2026.
Which companies are similar to Atmos Energy?
In the S&P 500, Atmos Energy is grouped in Gas Utilities within the Utilities sector.
Understand the numbers
Source: Atmos Energy’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.