ATO · CIK 0000731802
ATMOS ENERGY CORP (ATO) SEC Filings
Browse 2129 SEC filings for ATMOS ENERGY CORP, covering Jan 5, 1994 through Jul 2, 2026, organized by filing purpose with direct links to the original EDGAR documents.
Indexed filings
2,129
Filed in the last 12 months
79
History covered
1994–2026
Latest filing
4
Latest important filings
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Latest annual report
10-K
Annual report · Nov 14, 2025
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10-Q
Quarterly report · May 6, 2026
Open original filingLatest company update
8-K
Material agreement · Jun 18, 2026
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50 filings
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| Form | Description | Period ended | Filed |
|---|---|---|---|
| 4 | PRIMARY DOCUMENT | Jul 1, 2026 | Jul 2, 2026 |
| 4 | PRIMARY DOCUMENT | Jul 1, 2026 | Jul 2, 2026 |
| 11-K | Employee benefit plan annual report | Dec 31, 2025 | Jun 25, 2026 |
| 8-K | Material agreement | Jun 18, 2026 | Jun 18, 2026 |
| 8-K | Other material event | Jun 15, 2026 | Jun 18, 2026 |
| 424B2 | 424B2 filing | — | Jun 17, 2026 |
| FWP | FWP filing | — | Jun 16, 2026 |
| 424B5 | 424B5 filing | — | Jun 15, 2026 |
| SCHEDULE 13G/A Amended | SCHEDULE 13G filing | — | May 14, 2026 |
| 10-Q | Quarterly report | Mar 31, 2026 | May 6, 2026 |
| 8-K | Results of operations | May 6, 2026 | May 6, 2026 |
| 4 | PRIMARY DOCUMENT | May 2, 2026 | May 4, 2026 |
| 4 | PRIMARY DOCUMENT | May 2, 2026 | May 4, 2026 |
| 4 | PRIMARY DOCUMENT | May 2, 2026 | May 4, 2026 |
| 4 | PRIMARY DOCUMENT | May 2, 2026 | May 4, 2026 |
| 4 | PRIMARY DOCUMENT | May 2, 2026 | May 4, 2026 |
| 4 | PRIMARY DOCUMENT | May 2, 2026 | May 4, 2026 |
| SCHEDULE 13G | SCHEDULE 13G filing | — | Apr 29, 2026 |
| SCHEDULE 13G | SCHEDULE 13G filing | — | Apr 28, 2026 |
| 4 | PRIMARY DOCUMENT | Apr 1, 2026 | Apr 2, 2026 |
| 4 | PRIMARY DOCUMENT | Apr 1, 2026 | Apr 2, 2026 |
| 8-K | Material agreement; Financial obligation | Mar 27, 2026 | Mar 30, 2026 |
| SCHEDULE 13G/A Amended | SCHEDULE 13G filing | — | Mar 26, 2026 |
| 4 | PRIMARY DOCUMENT | Mar 6, 2026 | Mar 10, 2026 |
| 4 | PRIMARY DOCUMENT | Mar 6, 2026 | Mar 10, 2026 |
Page 1 of 2
Recent filing activity
Annual filing counts derived from this company's SEC history.
2026
51 filings
2025
81 filings
2024
81 filings
2023
82 filings
2022
68 filings
2021
92 filings
2020
100 filings
2019
92 filings
Sources and methodology
How this filing index is assembled and checked.
Filing metadata comes from SEC EDGAR submissions. Categories and plain-language labels are generated deterministically from SEC form and item codes; filing content is not summarized on this page.
Index updated: 7/15/2026
For research and education only. Always review the original SEC filing before making a decision.