# Atmos Energy Corp: overview

ATO · NYSE · CIK 731802 · [Utilities](/sectors/utilities.md) · fiscal year ends Sep 30

Pages: [Overview](/companies/ato.md) · [Financials](/companies/ato/financials.md) · [Filings](/companies/ato/filings.md) · [Insiders](/companies/ato/insiders.md)

Latest reported revenue: [$879.1m](/filings/0000731802-26-000102.md) for Q3 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 5, 2026 (XBRL us-gaap:Revenues, accession 0000731802-26-000102).

## Last eight quarters

| Line item | Unit | Q4 FY2024 (2024-09-30) | Q1 FY2025 (2024-12-31) | Q2 FY2025 (2025-03-31) | Q3 FY2025 (2025-06-30) | Q4 FY2025 (2025-09-30) | Q1 FY2026 (2025-12-31) | Q2 FY2026 (2026-03-31) | Q3 FY2026 (2026-06-30) |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [658 d](/filings/0000731802-25-000056.md) | [1,176](/filings/0000731802-26-000013.md) | [1,951](/filings/0000731802-26-000089.md) | [839](/filings/0000731802-26-000102.md) | [737 d](/filings/0000731802-25-000056.md) | [1,343](/filings/0000731802-26-000013.md) | [1,962](/filings/0000731802-26-000089.md) | [879](/filings/0000731802-26-000102.md) |
| Gross margin | % | not reported | not reported | not reported | not reported | not reported | not reported | not reported | not reported |
| Operating margin | % | [28.1% d](/filings/0000731802-25-000056.md) | [39.1%](/filings/0000731802-26-000013.md) | [32.2%](/filings/0000731802-26-000089.md) | [30.1%](/filings/0000731802-26-000102.md) | [29.8% d](/filings/0000731802-25-000056.md) | [38.3%](/filings/0000731802-26-000013.md) | [39.0%](/filings/0000731802-26-000089.md) | [36.4%](/filings/0000731802-26-000102.md) |
| Net margin | % | [20.4% d](/filings/0000731802-25-000056.md) | [29.9%](/filings/0000731802-26-000102.md) | [24.9%](/filings/0000731802-26-000102.md) | [22.2%](/filings/0000731802-26-000102.md) | [23.7% d](/filings/0000731802-25-000056.md) | [30.0%](/filings/0000731802-26-000102.md) | [29.7%](/filings/0000731802-26-000102.md) | [27.6%](/filings/0000731802-26-000102.md) |
| Diluted EPS | $ per share | not reported | [2.23](/filings/0000731802-26-000013.md) | [3.03](/filings/0000731802-26-000089.md) | [1.16](/filings/0000731802-26-000102.md) | not reported | [2.44](/filings/0000731802-26-000013.md) | [3.47](/filings/0000731802-26-000089.md) | [1.43](/filings/0000731802-26-000102.md) |
| Free cash flow | $m | [(477) d](/filings/0000731802-25-000056.md) | [(609)](/filings/0000731802-26-000013.md) | [83.3 d](/filings/0000731802-26-000089.md) | [(371) d](/filings/0000731802-26-000102.md) | [(615) d](/filings/0000731802-25-000056.md) | [(725)](/filings/0000731802-26-000013.md) | [(280) d](/filings/0000731802-26-000089.md) | [(399) d](/filings/0000731802-26-000102.md) |

- Revenue. XBRL Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure.
- Gross margin (gross profit / revenue). XBRL Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:Revenues. Derived values: 12-month figure less the 9-month figure.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquireProductiveAssets. Derived values: 12-month figure less the 9-month figure; 6-month figure less the 3-month figure; 9-month figure less the 6-month figure.

## Last five fiscal years

| Line item | Unit | FY2021 (2021-09-30) | FY2022 (2022-09-30) | FY2023 (2023-09-30) | FY2024 (2024-09-30) | FY2025 (2025-09-30) |
| --- | --- | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [3,407](/filings/0000731802-23-000028.md) | [4,202](/filings/0000731802-24-000030.md) | [4,275](/filings/0000731802-25-000056.md) | [4,165](/filings/0000731802-25-000056.md) | [4,703](/filings/0000731802-25-000056.md) |
| Gross margin | % | not reported | not reported | not reported | not reported | not reported |
| Operating margin | % | [26.6%](/filings/0000731802-23-000028.md) | [21.9%](/filings/0000731802-24-000030.md) | [25.0%](/filings/0000731802-25-000056.md) | [32.5%](/filings/0000731802-25-000056.md) | [33.2%](/filings/0000731802-25-000056.md) |
| Net margin | % | [19.5%](/filings/0000731802-23-000028.md) | [18.4%](/filings/0000731802-24-000030.md) | [20.7%](/filings/0000731802-25-000056.md) | [25.0%](/filings/0000731802-25-000056.md) | [25.5%](/filings/0000731802-25-000056.md) |
| Diluted EPS | $ per share | [5.12](/filings/0000731802-23-000028.md) | [5.60](/filings/0000731802-24-000030.md) | [6.10](/filings/0000731802-25-000056.md) | [6.83](/filings/0000731802-25-000056.md) | [7.46](/filings/0000731802-25-000056.md) |
| Free cash flow | $m | [(3,054)](/filings/0000731802-23-000028.md) | [(1,467)](/filings/0000731802-24-000030.md) | [654](/filings/0000731802-25-000056.md) | [(1,203)](/filings/0000731802-25-000056.md) | [(1,512)](/filings/0000731802-25-000056.md) |

- Revenue. XBRL Revenue: us-gaap:Revenues.
- Gross margin (gross profit / revenue). XBRL Revenue: us-gaap:Revenues.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:Revenues.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:Revenues.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquireProductiveAssets.

Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing.

## Insider purchases and sales

The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/ato/insiders.md)

None in coverage.

## Funds that report holding it

From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md)

| Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | --- | --- |
| [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $2.62bn | 15,237,564 |  | Reduced −2,214,399 |
| [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $1.96bn | 11,380,060 |  | Added +7,310 |
| [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $1.88bn | 10,885,153 |  | Added +149,606 |
| [VANGUARD PORTFOLIO MANAGEMENT LLC](/funds/2100121.md) | 2026-06-30 | $1.61bn | 9,360,135 |  | Added +74,502 |
| [WELLINGTON MANAGEMENT GROUP LLP](/funds/902219.md) | 2026-06-30 | $1.58bn | 9,185,788 |  | Reduced −465,684 |
| [Capital International Investors](/funds/1562230.md) | 2026-06-30 | $1.29bn | 7,483,012 |  | Added +156,234 |
| [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $770.3m | 4,489,277 |  | Added +152,281 |
| [BANK OF AMERICA CORP /DE/](/funds/70858.md) | 2026-06-30 | $720.2m | 4,180,718 |  | Reduced −18,715 |
| [Invesco Ltd.](/funds/914208.md) | 2026-06-30 | $546.7m | 3,173,775 |  | Added +166,469 |
| [MORGAN STANLEY](/funds/895421.md) | 2026-06-30 | $493.3m | 2,863,719 |  | Reduced −137,467 |

## Recent filings

[All 1,491 filings](/companies/ato/filings.md)

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-09 | 20:05 ET | [8-K](/filings/0001193125-26-419084.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-26-419084 |
| 2026-10-09 | 13:10 ET | [8-K](/filings/0001193125-26-418579.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-418579 |
| 2026-08-10 | 10:15 ET | [8-K](/filings/0001193125-26-341096.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-341096 |
| 2026-08-05 | 20:54 ET | [10-Q](/filings/0000731802-26-000102.md) | Quarterly report, period 2026-06-30 | 0000731802-26-000102 |
| 2026-08-05 | 20:47 ET | [8-K](/filings/0000731802-26-000100.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000731802-26-000100 |
| 2026-06-18 | 21:11 ET | [8-K](/filings/0001193125-26-276088.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-26-276088 |
| 2026-06-18 | 13:00 ET | [8-K](/filings/0001193125-26-275070.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-275070 |
| 2026-05-06 | 21:12 ET | [10-Q](/filings/0000731802-26-000089.md) | Quarterly report, period 2026-03-31 | 0000731802-26-000089 |
| 2026-05-06 | 20:58 ET | [8-K](/filings/0000731802-26-000086.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000731802-26-000086 |
| 2026-03-30 | 11:15 ET | [8-K](/filings/0001193125-26-130403.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation | 0001193125-26-130403 |

## Latest annual report

[Form 10-K for the fiscal year ended Sep 30, 2025](/filings/0000731802-25-000056.md), filed Nov 14, 2025.

## Forecast league

Q4 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/93c03f01-025e-4638-91e7-fe1f323ecce9)

## About the filer

- CIK: 731802
- Tickers: ATO
- Exchange: NYSE
- SIC code: 4924 Natural Gas Distribution
- State of incorporation: TX
- Filer category: Large accelerated filer

Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:23 ET. No prices; not investment advice.