Southern Co SEC filings SOMN
Southern Co has 1,010 filings in SEC EDGAR's recent list, going back to Feb 17, 2021. Its latest annual report, Form ARS, was filed on Apr 3, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 4 | Insider transaction | Nov 3, 2026 | Nov 2, 2026 |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Oct 22, 2026 | Oct 20, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 144 | Notice of proposed sale | Oct 1, 2026 | — |
| 4 | Insider transaction | Oct 1, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 3, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 3, 2026 |
| 144 | Notice of proposed sale | Sep 3, 2026 | — |
| 144 | Notice of proposed sale | Sep 3, 2026 | — |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 144 | Notice of proposed sale | Sep 1, 2026 | — |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 144 | Notice of proposed sale | Aug 6, 2026 | — |
| 8-K |
Current report
New debt, Unregistered share sale
|
Aug 6, 2026 | Aug 3, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Aug 3, 2026 |
| 8-K |
Current report
Other events
|
Aug 4, 2026 | Aug 3, 2026 |
| 144 | Notice of proposed sale | Aug 3, 2026 | — |
| 8-K |
Current report
Other events
|
Aug 3, 2026 | Aug 3, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2026 | Jul 30, 2026 |
| 10-Q | Quarterly report | Jul 30, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 144 | Notice of proposed sale | Jul 1, 2026 | — |
| 4 | Insider transaction | Jun 29, 2026 | Jun 28, 2026 |
| 11-K | Employee savings plan report | Jun 26, 2026 | Dec 31, 2025 |
| 424B2 | Prospectus | Jun 8, 2026 | — |
| 8-K |
Current report
Other events
|
Jun 8, 2026 | Jun 8, 2026 |
| S-3ASR | Automatic shelf registration | Jun 5, 2026 | — |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| 4 | Insider transaction | Jun 1, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 24, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 20, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
May 15, 2026 | May 13, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2026 | — |
| DEFA14A | Additional proxy material | May 5, 2026 | — |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 144 | Notice of proposed sale | May 1, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| 8-K |
Current report
Results of operations
|
Apr 30, 2026 | Apr 30, 2026 |
| 10-Q | Quarterly report | Apr 30, 2026 | Mar 31, 2026 |
| ARS | Annual report to shareholders | Apr 3, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 3, 2026 | — |
| DEF 14A | Proxy statement | Apr 3, 2026 | May 13, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Mar 31, 2026 | Mar 30, 2026 |
| 144 | Notice of proposed sale | Mar 30, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| PRE 14A | Preliminary proxy statement | Mar 23, 2026 | May 13, 2026 |
| 144 | Notice of proposed sale | Mar 19, 2026 | — |
| 4 | Insider transaction | Mar 19, 2026 | Mar 19, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 18, 2026 |
| 8-K |
Current report
Other events
|
Mar 19, 2026 | Mar 16, 2026 |
| 144 | Notice of proposed sale | Mar 18, 2026 | — |
| 424B2 | Prospectus | Mar 17, 2026 | — |
| FWP | Free writing prospectus | Mar 16, 2026 | — |
| 424B5 | Prospectus supplement | Mar 16, 2026 | — |
| 4 | Insider transaction | Mar 10, 2026 | Mar 8, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 6, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 5, 2026 | — |
| 4 | Insider transaction | Mar 2, 2026 | Feb 26, 2026 |
| 4 | Insider transaction | Feb 25, 2026 | Feb 24, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Feb 25, 2026 | Feb 20, 2026 |
| 144 | Notice of proposed sale | Feb 24, 2026 | — |
| 8-K |
Current report
Results of operations
|
Feb 19, 2026 | Feb 19, 2026 |
| 10-K | Annual report | Feb 19, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 16, 2026 |
| 8-K/A |
Amended current report
Officer or director change
|
Feb 17, 2026 | Jul 21, 2025 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 11, 2026 |
| 4 | Insider transaction | Feb 10, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Apr 30, 2025 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 31, 2026 |
| 3 | Initial insider ownership | Jan 6, 2026 | Aug 4, 2025 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Jan 6, 2026 | Oct 1, 2025 |
| 8-K |
Current report
Other events
|
Dec 19, 2025 | Dec 19, 2025 |
| 8-K |
Current report
Other events
|
Dec 10, 2025 | Dec 9, 2025 |
| 4 | Insider transaction | Dec 4, 2025 | Dec 3, 2025 |
| 4 | Insider transaction | Nov 7, 2025 | Nov 6, 2025 |
| CERT | Nyse certification | Nov 7, 2025 | — |
| 8-A12B | Filing | Nov 6, 2025 | — |
| 8-K |
Current report
Other events
|
Nov 6, 2025 | Nov 3, 2025 |
| 424B2 | Prospectus | Nov 4, 2025 | — |
| FWP | Free writing prospectus | Nov 4, 2025 | — |
| 424B5 | Prospectus supplement | Nov 3, 2025 | — |
| 8-K |
Current report
Results of operations
|
Oct 30, 2025 | Oct 30, 2025 |
| 10-Q | Quarterly report | Oct 30, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 30, 2025 |
| 144 | Notice of proposed sale | Sep 30, 2025 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 15, 2025 | Sep 15, 2025 |
| 3/A | Filing | Sep 12, 2025 | Jul 31, 2025 |
| 3 | Initial insider ownership | Sep 2, 2025 | Sep 1, 2025 |
| 3 | Initial insider ownership | Aug 22, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Aug 12, 2025 | Aug 11, 2025 |
| 144 | Notice of proposed sale | Aug 11, 2025 | — |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 2025 |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 30, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 24, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Jul 23, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jul 22, 2025 | Jul 21, 2025 |
| 144 | Notice of proposed sale | Jul 22, 2025 | — |
| 8-K/A |
Amended current report
Officer or director change
|
Jul 18, 2025 | Jul 10, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 11, 2025 | Jul 10, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Other events
|
Jul 1, 2025 | Jul 1, 2025 |
| 11-K | Employee savings plan report | Jun 27, 2025 | Dec 31, 2024 |
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.
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Company profile
- Industry
- Electric Services (SIC 4911)
- Listed as
- SO (NYSE), SOJC (NYSE), SOJD (NYSE), SOJE (NYSE), SOJF (NYSE), SOMN (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Atlanta, GA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 92122
- Former names
- SOUTHERN CO (until Nov 5, 2026)
Other Electric Services companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.