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 |
|---|---|---|---|
| 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 |
| 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 | — |
| FWP | Free writing prospectus | Oct 6, 2026 | — |
| 424B5 | Prospectus supplement | Oct 6, 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 |
| 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 | — |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 30, 2026 | Mar 27, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Feb 10, 2026 | Feb 4, 2026 |
| 424B3 | Prospectus | Feb 5, 2026 | — |
| 10-Q | Quarterly report | Feb 3, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 3, 2026 | Feb 3, 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 |
| PRE 14A | Preliminary proxy statement | Dec 9, 2025 | Feb 4, 2026 |
| 10-K | Annual report | Nov 14, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2025 | Nov 5, 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 | — |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2025 | Aug 6, 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 | — |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 7, 2025 | May 7, 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 |
| CORRESP | Letter to the SEC | Mar 27, 2025 | — |
| UPLOAD | Letter from the SEC | Mar 7, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
Feb 11, 2025 | Feb 5, 2025 |
| 10-Q | Quarterly report | Feb 4, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 4, 2025 | Feb 4, 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 |
| 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 | — |
| 10-K | Annual report | Nov 18, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2024 | Nov 6, 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 |
| 8-K |
Current report
Officer or director change
|
Sep 24, 2024 | Sep 18, 2024 |
| 424B2 | Prospectus | Sep 19, 2024 | — |
| FWP | Free writing prospectus | Sep 17, 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 | — |
| 424B5 | Prospectus supplement | Jun 18, 2024 | — |
| 8-K |
Current report
Material agreement
|
May 8, 2024 | May 8, 2024 |
| 424B5 | Prospectus supplement | May 8, 2024 | — |
| 10-Q | Quarterly report | May 8, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 8, 2024 | May 8, 2024 |
| 8-K |
Current report
Material agreement, Results of operations, New debt
|
Mar 29, 2024 | Mar 28, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Feb 13, 2024 | Feb 7, 2024 |
| 10-Q | Quarterly report | Feb 6, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 6, 2024 | Feb 6, 2024 |
| ARS | Annual report to shareholders | Dec 29, 2023 | Sep 30, 2023 |
| DEFA14A | Additional proxy material | Dec 29, 2023 | — |
| DEF 14A | Proxy statement | Dec 29, 2023 | Feb 7, 2024 |
| 10-K | Annual report | Nov 14, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 8, 2023 | Nov 8, 2023 |
| 8-K |
Current report
Material agreement
|
Oct 10, 2023 | Oct 10, 2023 |
| 8-K |
Current report
Other events
|
Oct 10, 2023 | Oct 5, 2023 |
| 424B2 | Prospectus | Oct 10, 2023 | — |
| FWP | Free writing prospectus | Oct 5, 2023 | — |
| 424B5 | Prospectus supplement | Oct 5, 2023 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Aug 4, 2023 | Aug 1, 2023 |
| 10-Q | Quarterly report | Aug 2, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2023 | Aug 2, 2023 |
| 11-K | Employee savings plan report | Jun 23, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Other events
|
Jun 20, 2023 | Jun 20, 2023 |
| 424B8 | Filing | Jun 14, 2023 | — |
| 424B1 | Filing | Jun 14, 2023 | — |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Jun 14, 2023 | Jun 9, 2023 |
| FWP | Free writing prospectus | Jun 12, 2023 | — |
| EFFECT | Filing | Jun 8, 2023 | — |
| FWP | Free writing prospectus | Jun 7, 2023 | — |
| CORRESP | Letter to the SEC | Jun 5, 2023 | — |
| CORRESP | Letter to the SEC | Jun 5, 2023 | — |
| SF-1/A | Filing | Jun 5, 2023 | — |
| SF-1/A | Filing | May 30, 2023 | — |
| CORRESP | Letter to the SEC | May 26, 2023 | — |
| 10-Q | Quarterly report | May 3, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 3, 2023 | May 3, 2023 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Mar 31, 2023 | Mar 31, 2023 |
| 424B5 | Prospectus supplement | Mar 31, 2023 | — |
| S-3ASR | Automatic shelf registration | Mar 31, 2023 | — |
| UPLOAD | Letter from the SEC | Mar 27, 2023 | — |
| 8-K |
Current report
Material agreement, New debt
|
Mar 6, 2023 | Mar 3, 2023 |
| SF-1 | Filing | Feb 28, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
Feb 13, 2023 | Feb 8, 2023 |
| 10-Q | Quarterly report | Feb 7, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 7, 2023 | Feb 7, 2023 |
| DEFA14A | Additional proxy material | Dec 16, 2022 | — |
| DEF 14A | Proxy statement | Dec 16, 2022 | Feb 8, 2023 |
| 424B3 | Prospectus | Nov 14, 2022 | — |
| 10-K | Annual report | Nov 14, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2022 | Nov 9, 2022 |
| 8-K |
Current report
Material agreement
|
Oct 3, 2022 | Oct 3, 2022 |
| 8-K |
Current report
Other events
|
Oct 3, 2022 | Sep 27, 2022 |
| 424B2 | Prospectus | Sep 29, 2022 | — |
| FWP | Free writing prospectus | Sep 28, 2022 | — |
| 424B5 | Prospectus supplement | Sep 27, 2022 | — |
| 10-Q | Quarterly report | Aug 3, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2022 | Aug 3, 2022 |
| 11-K | Employee savings plan report | Jun 24, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Officer or director change
|
Jun 1, 2022 | May 30, 2022 |
| 10-Q | Quarterly report | May 4, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 4, 2022 | May 4, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 1, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Material agreement
|
Mar 23, 2022 | Mar 23, 2022 |
| 424B5 | Prospectus supplement | Mar 23, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
Feb 11, 2022 | Feb 9, 2022 |
| 10-Q | Quarterly report | Feb 8, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 8, 2022 | Feb 8, 2022 |
| 8-K |
Current report
Material agreement
|
Jan 14, 2022 | Jan 14, 2022 |
| 8-K |
Current report
Other events
|
Jan 14, 2022 | Jan 11, 2022 |
| 424B2 | Prospectus | Jan 13, 2022 | — |
| FWP | Free writing prospectus | Jan 12, 2022 | — |
| 424B5 | Prospectus supplement | Jan 11, 2022 | — |
| DEFA14A | Additional proxy material | Dec 17, 2021 | — |
| DEF 14A | Proxy statement | Dec 17, 2021 | Feb 9, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 3, 2021 | Nov 29, 2021 |
| 10-K | Annual report | Nov 12, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2021 | Nov 10, 2021 |
| 8-K |
Current report
Material agreement
|
Oct 1, 2021 | Oct 1, 2021 |
| 8-K |
Current report
Other events
|
Oct 1, 2021 | Sep 21, 2021 |
| 424B2 | Prospectus | Sep 23, 2021 | — |
| FWP | Free writing prospectus | Sep 22, 2021 | — |
| 424B5 | Prospectus supplement | Sep 21, 2021 | — |
| 8-K |
Current report
Officer or director change
|
Aug 6, 2021 | Aug 3, 2021 |
| 10-Q | Quarterly report | Aug 4, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2021 | Aug 4, 2021 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jul 2, 2021 | Jun 29, 2021 |
| 8-K |
Current report
Material agreement
|
Jun 30, 2021 | Jun 29, 2021 |
| 424B5 | Prospectus supplement | Jun 30, 2021 | — |
| S-3ASR | Automatic shelf registration | Jun 29, 2021 | — |
| 11-K | Employee savings plan report | Jun 25, 2021 | Dec 31, 2020 |
| 10-Q | Quarterly report | May 5, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 5, 2021 | May 5, 2021 |
| 8-K |
Current report
Material agreement, Results of operations, New debt
|
Apr 1, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Material agreement
|
Mar 9, 2021 | Mar 9, 2021 |
| 8-K |
Current report
Other events
|
Mar 9, 2021 | Mar 4, 2021 |
| 424B2 | Prospectus | Mar 8, 2021 | — |
| FWP | Free writing prospectus | Mar 4, 2021 | — |
| 424B5 | Prospectus supplement | Mar 4, 2021 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 1, 2021 | Mar 1, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 19, 2021 | Feb 12, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Feb 8, 2021 | Feb 3, 2021 |
| 10-Q | Quarterly report | Feb 2, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 2, 2021 | Feb 2, 2021 |
| DEFA14A | Additional proxy material | Dec 18, 2020 | — |
| DEF 14A | Proxy statement | Dec 18, 2020 | Feb 3, 2021 |
| 8-K |
Current report
Officer or director change
|
Nov 24, 2020 | Nov 19, 2020 |
| 10-K | Annual report | Nov 13, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2020 | Nov 11, 2020 |
| 8-K |
Current report
Material agreement
|
Oct 1, 2020 | Oct 1, 2020 |
| 8-K |
Current report
Other events
|
Oct 1, 2020 | Sep 23, 2020 |
| 424B2 | Prospectus | Sep 24, 2020 | — |
| FWP | Free writing prospectus | Sep 23, 2020 | — |
| 424B5 | Prospectus supplement | Sep 23, 2020 | — |
| 10-Q | Quarterly report | Aug 5, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2020 | Aug 5, 2020 |
| 11-K | Employee savings plan report | Jun 26, 2020 | Dec 31, 2019 |
| 424B3 | Prospectus | May 15, 2020 | — |
| 10-Q | Quarterly report | May 6, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 6, 2020 | May 6, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 24, 2020 | Apr 23, 2020 |
| 8-K |
Current report
Material agreement, Results of operations, New debt, Regulation FD disclosure
|
Apr 13, 2020 | Apr 9, 2020 |
| 8-K |
Current report
Officer or director change
|
Mar 25, 2020 | Mar 19, 2020 |
| 424B3 | Prospectus | Mar 20, 2020 | — |
| 8-K |
Current report
Material agreement
|
Feb 12, 2020 | Feb 12, 2020 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.