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 | 2011-01-04 | 2011-01-03 |
| Annual report to shareholders | ARS | 2010-12-29 | 2010-09-30 |
| Proxy materials | DEFA14A | 2010-12-28 | - |
| Proxy statement | DEF 14A | 2010-12-28 | 2011-02-09 |
| Major company event | 8-K | 2010-12-21 | 2010-12-17 |
| Insider trade | 4 | 2010-12-13 | 2010-12-08 |
| Major company event | 8-K | 2010-12-10 | 2010-12-08 |
| Insider trade | 4 | 2010-11-26 | 2010-11-26 |
| Insider trade | 4 | 2010-11-24 | 2010-11-24 |
| Insider trade | 4 | 2010-11-24 | 2010-11-24 |
| Insider trade | 4 | 2010-11-22 | 2010-11-22 |
| Annual report | 10-K | 2010-11-12 | 2010-09-30 |
| Insider trade | 4 | 2010-11-10 | 2010-11-09 |
| Insider trade | 4 | 2010-11-09 | 2010-11-06 |
| Insider trade | 4 | 2010-11-09 | 2010-11-06 |
| Insider trade | 4 | 2010-11-09 | 2010-11-06 |
| Insider trade | 4 | 2010-11-09 | 2010-11-06 |
| Insider trade | 4 | 2010-11-04 | 2010-11-02 |
| Insider trade | 4 | 2010-11-04 | 2010-11-02 |
| Insider trade | 4 | 2010-11-04 | 2010-11-02 |
| Insider trade | 4 | 2010-11-04 | 2010-11-02 |
| Insider trade | 4 | 2010-11-04 | 2010-11-02 |
| Insider trade | 4 | 2010-11-04 | 2010-11-02 |
| Major company event | 8-K | 2010-11-03 | 2010-11-03 |
| Major company event | 8-K | 2010-10-20 | 2010-10-15 |
| Insider trade | 4 | 2010-10-04 | 2010-10-01 |
| Insider trade | 4 | 2010-10-04 | 2010-10-01 |
| Insider trade | 4 | 2010-10-04 | 2010-10-01 |
| Insider trade | 4 | 2010-10-04 | 2010-10-01 |
| Major company event | 8-K | 2010-09-28 | 2010-09-25 |
| Major company event | 8-K | 2010-08-24 | 2010-08-23 |
| Insider trade | 4 | 2010-08-24 | 2010-08-24 |
| Insider trade | 4 | 2010-08-17 | 2010-08-17 |
| Insider trade | 4 | 2010-08-12 | 2010-08-11 |
| Insider trade | 4 | 2010-08-09 | 2010-08-09 |
| Quarterly report | 10-Q | 2010-08-05 | 2010-06-30 |
| Major company event | 8-K | 2010-08-04 | 2010-08-04 |
| SEC correspondence | UPLOAD | 2010-07-15 | - |
| Insider trade | 4 | 2010-07-06 | 2010-07-01 |
| Insider trade | 4 | 2010-07-06 | 2010-07-01 |
| Insider trade | 4 | 2010-07-06 | 2010-07-01 |
| Major company event | 8-K | 2010-07-01 | 2010-07-01 |
| Company correspondence | CORRESP | 2010-06-28 | - |
| Employee plan annual report | 11-K | 2010-06-21 | 2009-12-31 |
| SEC correspondence | UPLOAD | 2010-06-15 | - |
| Company correspondence | CORRESP | 2010-06-09 | - |
| SEC correspondence | UPLOAD | 2010-06-01 | - |
| Employee stock plan | S-8 | 2010-05-07 | - |
| Quarterly report | 10-Q | 2010-05-06 | 2010-03-31 |
| Major company event | 8-K | 2010-05-05 | 2010-05-05 |