ATO - Company ID 0000731802
ATMOS ENERGY CORP has filed 2,121 public company documents between 1994 and 2026. The most frequent type is insider trade (1,233 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| 4 | Insider trade | 7mo ago2025-12-04 | 2025-12-03 | View filing |
| 144 | Insider sale notice | 7mo ago2025-12-03 | - | View filing |
| 10-K | Annual report | 7mo ago2025-11-14 | 2025-09-30 | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 8mo ago2025-11-12 | - | View filing |
| 8-K | Major company event | 8mo ago2025-11-05 | 2025-11-05 | View filing |
| 4 | Insider trade | 8mo ago2025-11-05 | 2025-11-04 | View filing |
| 4 | Insider trade | 8mo ago2025-11-05 | 2025-11-04 | View filing |
| 4 | Insider trade | 8mo ago2025-11-05 | 2025-11-04 | View filing |
| 4 | Insider trade | 8mo ago2025-11-05 | 2025-11-04 | View filing |
| 4 | Insider trade | 8mo ago2025-11-05 | 2025-11-04 | View filing |
| 4 | Insider trade | 8mo ago2025-11-05 | 2025-11-04 | View filing |
| 4 | Insider trade | 9mo ago2025-10-02 | 2025-10-01 | View filing |
| 4 | Insider trade | 9mo ago2025-10-02 | 2025-10-01 | View filing |
| 8-K | Major company event | 9mo ago2025-10-01 | 2025-10-01 | View filing |
| 8-K | Major company event | 9mo ago2025-10-01 | 2025-09-18 | View filing |
| 424B2 | Prospectus supplement | 9mo ago2025-09-22 | - | View filing |
| FWP | Free writing prospectus | 9mo ago2025-09-18 | - | View filing |
| 424B5 | Prospectus supplement | 9mo ago2025-09-18 | - | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 11mo ago2025-08-14 | - | View filing |
| 10-Q | Quarterly report | 11mo ago2025-08-06 | 2025-06-30 | View filing |
| 8-K | Major company event | 11mo ago2025-08-06 | 2025-08-06 | View filing |
| 4 | Insider trade | 1y ago2025-07-02 | 2025-07-01 | View filing |
| 8-K | Major company event | 1y ago2025-06-26 | 2025-06-26 | View filing |
| 8-K | Major company event | 1y ago2025-06-26 | 2025-06-16 | View filing |
| 11-K | Employee plan annual report | 1y ago2025-06-26 | 2024-12-31 | View filing |
| 424B2 | Prospectus supplement | 1y ago2025-06-18 | - | View filing |
| FWP | Free writing prospectus | 1y ago2025-06-16 | - | View filing |
| 424B5 | Prospectus supplement | 1y ago2025-06-16 | - | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 1y ago2025-05-15 | - | View filing |
| 4 | Insider trade | 1y ago2025-05-15 | 2025-05-14 | View filing |
| 144 | Insider sale notice | 1y ago2025-05-14 | - | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 1y ago2025-05-14 | - | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 1y ago2025-05-13 | - | View filing |
| SCHEDULE 13G/A | SCHEDULE 13G/A | 1y ago2025-05-12 | - | View filing |
| 10-Q | Quarterly report | 1y ago2025-05-07 | 2025-03-31 | View filing |
| 8-K | Major company event | 1y ago2025-05-07 | 2025-05-07 | View filing |
| 4 | Insider trade | 1y ago2025-05-05 | 2025-05-02 | View filing |
| 4 | Insider trade | 1y ago2025-05-05 | 2025-05-02 | View filing |
| 4 | Insider trade | 1y ago2025-05-05 | 2025-05-02 | View filing |
| 4 | Insider trade | 1y ago2025-05-05 | 2025-05-02 | View filing |
| 4 | Insider trade | 1y ago2025-05-05 | 2025-05-02 | View filing |
| 4 | Insider trade | 1y ago2025-05-05 | 2025-05-02 | View filing |
| S-8 | Employee stock plan | 1y ago2025-04-30 | - | View filing |
| UPLOAD | SEC correspondence | 1y ago2025-04-15 | - | View filing |
| 8-K | Major company event | 1y ago2025-04-04 | 2025-03-31 | View filing |
| 4 | Insider trade | 1y ago2025-04-02 | 2025-04-01 | View filing |
| CORRESP | Company correspondence | 1y ago2025-03-27 | - | View filing |
| 4 | Insider trade | 1y ago2025-03-11 | 2025-03-07 | View filing |
| 4 | Insider trade | 1y ago2025-03-11 | 2025-03-07 | View filing |
| 4 | Insider trade | 1y ago2025-03-11 | 2025-03-07 | View filing |