ATO - CIK 0000731802
ATMOS ENERGY CORP has filed 2,121 documents with the SEC 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.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Insider trade | 4 | 2002-10-02 | 2002-09-26 |
| Insider trade | 4 | 2002-10-01 | 2002-10-01 |
| Insider trade | 4 | 2002-10-01 | 2002-09-30 |
| Insider trade | 4 | 2002-10-01 | 2002-10-01 |
| Insider trade | 4 | 2002-10-01 | 2002-10-01 |
| Quarterly report | 10-Q | 2002-08-14 | 2002-06-30 |
| Major company event | 8-K | 2002-08-14 | 2002-08-14 |
| Employee plan annual report | 11-K | 2002-06-28 | 2001-12-31 |
| Employee stock plan | S-8 | 2002-05-22 | - |
| Quarterly report | 10-Q | 2002-05-15 | 2002-03-31 |
| 8-A12B/A | - | 2002-02-15 | - |
| Quarterly report | 10-Q | 2002-02-14 | 2001-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2002-02-11 | - |
| Proxy statement | DEF 14A | 2001-12-21 | 2002-02-13 |
| Securities registration | S-3 | 2001-12-20 | - |
| 10-K405 | - | 2001-11-21 | 2001-09-30 |
| Major company event | 8-K | 2001-09-25 | 2001-09-24 |
| Major company event (amended) | 8-K/A | 2001-09-13 | 2001-07-01 |
| Quarterly report | 10-Q | 2001-08-14 | 2001-06-30 |
| Major company event | 8-K | 2001-07-13 | 2001-07-01 |
| Employee plan annual report | 11-K | 2001-06-26 | 2000-12-31 |
| Employee stock plan | S-8 | 2001-06-25 | - |
| Major company event | 8-K | 2001-05-22 | 2001-05-15 |
| Prospectus supplement | 424B2 | 2001-05-16 | - |
| 424B3 | - | 2001-05-11 | - |
| Quarterly report | 10-Q | 2001-05-09 | 2001-03-31 |
| Major company event | 8-K | 2001-04-09 | 2001-04-02 |
| Passive ownership stake | SC 13G | 2001-02-09 | - |
| Quarterly report | 10-Q | 2001-02-08 | 2000-12-31 |
| Proxy statement | DEF 14A | 2000-12-28 | 2001-02-14 |
| Major company event | 8-K | 2000-12-27 | 2000-12-14 |
| Prospectus supplement | 424B2 | 2000-12-15 | - |
| 424B3 | - | 2000-12-01 | - |
| 10-K405 | - | 2000-11-15 | 2000-09-30 |
| S-3/A | - | 2000-11-06 | - |
| Major company event | 8-K | 2000-08-17 | 2000-08-08 |
| Quarterly report | 10-Q | 2000-08-10 | 2000-06-30 |
| 424B3 | - | 2000-07-12 | - |
| Major company event | 8-K | 2000-06-22 | 2000-06-15 |
| Major company event | 8-K | 2000-06-13 | 2000-05-31 |
| Quarterly report | 10-Q | 2000-05-11 | 2000-03-31 |
| Major company event | 8-K | 2000-05-08 | 2000-04-13 |
| Major company event | 8-K | 2000-04-18 | 2000-02-16 |
| Major company event | 8-K | 2000-02-22 | 2000-02-16 |
| Quarterly report | 10-Q | 2000-02-11 | 1999-12-31 |
| Securities registration | S-3 | 2000-01-27 | - |
| Securities registration | S-3 | 1999-12-28 | - |
| Proxy statement | DEF 14A | 1999-12-22 | 2000-02-09 |
| 10-K405 | - | 1999-12-14 | 1999-09-30 |
| Quarterly report | 10-Q | 1999-08-13 | 1999-06-30 |