ATO · NYSE · CIK 0000731802

ATMOS ENERGY CORP

ATMOS ENERGY CORP’s most recent SEC filing in our snapshot is a Form 8-K filed on Oct 9, 2026. In fiscal 2025 (year ended Sep 30, 2025) it reported revenue of $4.7B and net income of $1.2B, according to its XBRL data on EDGAR. Its EDGAR record lists 46 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$4.7B
Net income, FY2025
$1.2B
Form 4 filings on record, past 12 months
46

Company overview

Legal name (as filed)
ATMOS ENERGY CORP
Ticker
ATO
SEC Central Index Key (CIK)
0000731802
Industry (SIC)
Natural Gas Distribution (code 4924)
Business address
DALLAS, TX
State or country of incorporation
TX
Fiscal year ends
September 30
SEC filer category
Large accelerated filer
Position in SEC ticker list
#464 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from ATMOS ENERGY CORP’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$3.4BFY2021$4.2BFY2022$4.3BFY2023$4.2BFY2024$4.7BFY2025
Net income
$665.6MFY2021$774.4MFY2022$885.9MFY2023$1.0BFY2024$1.2BFY2025
ATO annual results
ItemFY2021
ended Sep 30, 2021		FY2022
ended Sep 30, 2022		FY2023
ended Sep 30, 2023		FY2024
ended Sep 30, 2024		FY2025
ended Sep 30, 2025
Revenue$3.4B$4.2B$4.3B$4.2B$4.7B
Net income$665.6M$774.4M$885.9M$1.0B$1.2B
Diluted EPS$5.12$5.60$6.10$6.83$7.46
Total assets$19.6B$22.2B$22.5B$25.2B$28.2B
Cash and equivalents$116.7M$51.6M$15.4M$307.3M$202.7M

XBRL tags used: revenue = Revenues; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

ATO latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Nov 14, 202510-KAnnual report· period Sep 30, 2025Document · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Oct 9, 20268-KMaterial agreement· period Oct 9, 2026Document · Index
Dec 19, 2025DEF 14ADefinitive proxy statement· period Feb 4, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about ATMOS ENERGY CORP, by form type:

4 ×158-K ×8SCHEDULE 13G/A ×43 ×2424B2 ×2FWP ×2424B5 ×210-Q ×2SCHEDULE 13G ×211-K ×1
ATO recent filings
FiledFormWhat it isOriginal
Oct 9, 20268-KMaterial agreement· period Oct 9, 2026Document · Index
Oct 9, 20268-KOther events· period Oct 6, 2026Document · Index
Oct 8, 2026424B2Prospectus (pricing supplement)Document · Index
Oct 8, 20263Initial statement of beneficial ownership· period Oct 1, 2026Document · Index
Oct 6, 2026FWPFWPDocument · Index
Oct 6, 2026424B5424B5Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Sep 17, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 15, 2026Document · Index
Sep 2, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 1, 2026Document · Index
Sep 1, 20263Initial statement of beneficial ownership· period Sep 1, 2026Document · Index
Aug 13, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Aug 12, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 11, 2026Document · Index
Aug 10, 20268-KDirector or officer change; Regulation FD disclosure· period Aug 4, 2026Document · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 5, 20268-KResults of operations· period Aug 5, 2026Document · Index
Jul 27, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Jul 2, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 1, 2026Document · Index
Jul 2, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 1, 2026Document · Index
Jun 25, 202611-KAnnual report of employee stock plans· period Dec 31, 2025Document · Index
Jun 18, 20268-KMaterial agreement· period Jun 18, 2026Document · Index
Jun 18, 20268-KOther events· period Jun 15, 2026Document · Index
Jun 17, 2026424B2Prospectus (pricing supplement)Document · Index
Jun 16, 2026FWPFWPDocument · Index
Jun 15, 2026424B5424B5Document · Index
May 14, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
May 6, 202610-QQuarterly report· period Mar 31, 2026Document · Index
May 6, 20268-KResults of operations· period May 6, 2026Document · Index
May 4, 20264Statement of changes in beneficial ownership (insider trade)· period May 2, 2026Document · Index
May 4, 20264Statement of changes in beneficial ownership (insider trade)· period May 2, 2026Document · Index
May 4, 20264Statement of changes in beneficial ownership (insider trade)· period May 2, 2026Document · Index
May 4, 20264Statement of changes in beneficial ownership (insider trade)· period May 2, 2026Document · Index
May 4, 20264Statement of changes in beneficial ownership (insider trade)· period May 2, 2026Document · Index
May 4, 20264Statement of changes in beneficial ownership (insider trade)· period May 2, 2026Document · Index
Apr 29, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 28, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Apr 2, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 1, 2026Document · Index
Apr 2, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 1, 2026Document · Index
Mar 30, 20268-KMaterial agreement; New financial obligation· period Mar 27, 2026Document · Index
Mar 26, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index

Insider filing activity

46 Form 4 filings appear in ATMOS ENERGY CORP’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

Other companies in Natural Gas Distribution

All 12 companies in Natural Gas Distribution· Companies headquartered in Texas

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0000731802 and XBRL company facts. ATMOS ENERGY CORP on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.