Atmos Energy Corp SEC filings ATO
Atmos Energy Corp has 1,011 filings in SEC EDGAR's recent list, going back to Feb 3, 2015. Its latest annual report, Form ARS, was filed on Dec 19, 2025 for the period ended Sep 30, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 5, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (officer or director change, regulation fd disclosure). The company's fiscal year ends on September 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Nov 4, 2026 | Nov 3, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2026 | Nov 4, 2026 |
| 4 | Insider transaction | Nov 4, 2026 | Nov 3, 2026 |
| 8-K |
Current report
Material agreement
|
Oct 9, 2026 | Oct 9, 2026 |
| 8-K |
Current report
Other events
|
Oct 9, 2026 | Oct 6, 2026 |
| 424B2 | Prospectus | Oct 8, 2026 | — |
| 3 | Initial insider ownership | Oct 8, 2026 | Oct 1, 2026 |
| FWP | Free writing prospectus | Oct 6, 2026 | — |
| 424B5 | Prospectus supplement | Oct 6, 2026 | — |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Sep 17, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 2, 2026 | Sep 1, 2026 |
| 3 | Initial insider ownership | Sep 1, 2026 | Sep 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| 4 | Insider transaction | Aug 12, 2026 | Aug 11, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 10, 2026 | Aug 4, 2026 |
| 10-Q | Quarterly report | Aug 5, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2026 | Aug 5, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 27, 2026 | — |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 11-K | Employee savings plan report | Jun 25, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Material agreement
|
Jun 18, 2026 | Jun 18, 2026 |
| 8-K |
Current report
Other events
|
Jun 18, 2026 | Jun 15, 2026 |
| 424B2 | Prospectus | Jun 17, 2026 | — |
| FWP | Free writing prospectus | Jun 16, 2026 | — |
| 424B5 | Prospectus supplement | Jun 15, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 2, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 2, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 2, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 2, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 2, 2026 |
| 4 | Insider transaction | May 4, 2026 | May 2, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 28, 2026 | — |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 30, 2026 | Mar 27, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Feb 10, 2026 | Feb 4, 2026 |
| 3 | Initial insider ownership | Feb 5, 2026 | Feb 4, 2026 |
| 3 | Initial insider ownership | Feb 5, 2026 | Feb 4, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 4, 2026 |
| 424B3 | Prospectus | Feb 5, 2026 | — |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 10-Q | Quarterly report | Feb 3, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 3, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| ARS | Annual report to shareholders | Dec 19, 2025 | Sep 30, 2025 |
| DEFA14A | Additional proxy material | Dec 19, 2025 | — |
| DEF 14A | Proxy statement | Dec 19, 2025 | Feb 4, 2026 |
| 4 | Insider transaction | Dec 18, 2025 | Dec 16, 2025 |
| 4 | Insider transaction | Dec 12, 2025 | Dec 10, 2025 |
| PRE 14A | Preliminary proxy statement | Dec 9, 2025 | Feb 4, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 4, 2025 | — |
| 4 | Insider transaction | Dec 4, 2025 | Dec 3, 2025 |
| 144 | Notice of proposed sale | Dec 3, 2025 | — |
| 10-K | Annual report | Nov 14, 2025 | Sep 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 12, 2025 | — |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 2025 |
| 4 | Insider transaction | Nov 5, 2025 | Nov 4, 2025 |
| 4 | Insider transaction | Nov 5, 2025 | Nov 4, 2025 |
| 4 | Insider transaction | Nov 5, 2025 | Nov 4, 2025 |
| 4 | Insider transaction | Nov 5, 2025 | Nov 4, 2025 |
| 4 | Insider transaction | Nov 5, 2025 | Nov 4, 2025 |
| 4 | Insider transaction | Nov 5, 2025 | Nov 4, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 8-K |
Current report
Material agreement
|
Oct 1, 2025 | Oct 1, 2025 |
| 8-K |
Current report
Other events
|
Oct 1, 2025 | Sep 18, 2025 |
| 424B2 | Prospectus | Sep 22, 2025 | — |
| FWP | Free writing prospectus | Sep 18, 2025 | — |
| 424B5 | Prospectus supplement | Sep 18, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2025 | Aug 6, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Material agreement
|
Jun 26, 2025 | Jun 26, 2025 |
| 11-K | Employee savings plan report | Jun 26, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Other events
|
Jun 26, 2025 | Jun 16, 2025 |
| 424B2 | Prospectus | Jun 18, 2025 | — |
| FWP | Free writing prospectus | Jun 16, 2025 | — |
| 424B5 | Prospectus supplement | Jun 16, 2025 | — |
| 4 | Insider transaction | May 15, 2025 | May 14, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2025 | — |
| 144 | Notice of proposed sale | May 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 13, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 12, 2025 | — |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 7, 2025 | May 7, 2025 |
| 4 | Insider transaction | May 5, 2025 | May 2, 2025 |
| 4 | Insider transaction | May 5, 2025 | May 2, 2025 |
| 4 | Insider transaction | May 5, 2025 | May 2, 2025 |
| 4 | Insider transaction | May 5, 2025 | May 2, 2025 |
| 4 | Insider transaction | May 5, 2025 | May 2, 2025 |
| 4 | Insider transaction | May 5, 2025 | May 2, 2025 |
| S-8 | Employee stock plan registration | Apr 30, 2025 | — |
| UPLOAD | Letter from the SEC | Apr 15, 2025 | — |
| 8-K |
Current report
Material agreement, New debt
|
Apr 4, 2025 | Mar 31, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| CORRESP | Letter to the SEC | Mar 27, 2025 | — |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| 4 | Insider transaction | Mar 11, 2025 | Mar 7, 2025 |
| UPLOAD | Letter from the SEC | Mar 7, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 14, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
Feb 11, 2025 | Feb 5, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 5, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 5, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 5, 2025 | Feb 4, 2025 |
| 10-Q | Quarterly report | Feb 4, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 15, 2025 |
| 3 | Initial insider ownership | Jan 8, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 2, 2025 |
| ARS | Annual report to shareholders | Dec 20, 2024 | Sep 30, 2024 |
| DEFA14A | Additional proxy material | Dec 20, 2024 | — |
| DEF 14A | Proxy statement | Dec 20, 2024 | Feb 5, 2025 |
| 144 | Notice of proposed sale | Dec 10, 2024 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 5, 2024 | Dec 3, 2024 |
| 8-K |
Current report
Material agreement
|
Dec 3, 2024 | Dec 3, 2024 |
| 424B5 | Prospectus supplement | Dec 3, 2024 | — |
| S-3ASR | Automatic shelf registration | Dec 3, 2024 | — |
| 4 | Insider transaction | Nov 19, 2024 | Nov 15, 2024 |
| 10-K | Annual report | Nov 18, 2024 | Sep 30, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| 4 | Insider transaction | Nov 12, 2024 | Nov 11, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 8, 2024 | — |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 5, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2024 | Nov 6, 2024 |
| 3/A | Primary document | Oct 8, 2024 | Sep 10, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 8-K |
Current report
Material agreement
|
Oct 1, 2024 | Oct 1, 2024 |
| 8-K |
Current report
Other events
|
Oct 1, 2024 | Sep 17, 2024 |
| 3 | Initial insider ownership | Sep 25, 2024 | Sep 18, 2024 |
| 8-K |
Current report
Officer or director change
|
Sep 24, 2024 | Sep 18, 2024 |
| 3/A | Primary document | Sep 23, 2024 | Sep 10, 2024 |
| 424B2 | Prospectus | Sep 19, 2024 | — |
| FWP | Free writing prospectus | Sep 17, 2024 | — |
| 3 | Initial insider ownership | Sep 17, 2024 | Sep 10, 2024 |
| 3 | Initial insider ownership | Sep 17, 2024 | Sep 10, 2024 |
| 424B5 | Prospectus supplement | Sep 17, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Sep 16, 2024 | Sep 10, 2024 |
| 10-Q | Quarterly report | Aug 7, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2024 | Aug 7, 2024 |
| 11-K | Employee savings plan report | Jun 26, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Material agreement
|
Jun 21, 2024 | Jun 21, 2024 |
| 8-K |
Current report
Other events
|
Jun 21, 2024 | Jun 18, 2024 |
| 424B2 | Prospectus | Jun 20, 2024 | — |
| FWP | Free writing prospectus | Jun 20, 2024 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Natural Gas Distribution (SIC 4924)
- Listed as
- ATO (NYSE)
- Fiscal year ends
- September 30
- Incorporated in
- TX
- Headquarters
- Dallas, TX
- SEC filer status
- Large accelerated filer
- SEC CIK
- 731802
Other Natural Gas Distribution companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.