Southern Co SEC filings SO
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 |
|---|---|---|---|
| DEFA14A | Additional proxy material | May 5, 2026 | — |
| DEFA14A | Additional proxy material | Apr 3, 2026 | — |
| DEF 14A | Proxy statement | Apr 3, 2026 | May 13, 2026 |
| PRE 14A | Preliminary proxy statement | Mar 23, 2026 | May 13, 2026 |
| DEFA14A | Additional proxy material | May 13, 2025 | — |
| DEFA14A | Additional proxy material | Apr 11, 2025 | — |
| DEF 14A | Proxy statement | Apr 11, 2025 | May 21, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 31, 2025 | May 21, 2025 |
| DEFA14A | Additional proxy material | May 14, 2024 | — |
| DEFA14A | Additional proxy material | Apr 12, 2024 | — |
| DEF 14A | Proxy statement | Apr 12, 2024 | May 22, 2024 |
| PRE 14A | Preliminary proxy statement | Apr 1, 2024 | May 22, 2024 |
| DEFA14A | Additional proxy material | May 17, 2023 | — |
| DEFA14A | Additional proxy material | Apr 14, 2023 | — |
| DEF 14A | Proxy statement | Apr 14, 2023 | — |
| PRE 14A | Preliminary proxy statement | Mar 31, 2023 | — |
| DEFA14A | Additional proxy material | May 10, 2022 | — |
| DEFA14A | Additional proxy material | Apr 15, 2022 | — |
| DEF 14A | Proxy statement | Apr 15, 2022 | May 25, 2022 |
| DEFA14A | Additional proxy material | May 13, 2021 | — |
| DEFA14A | Additional proxy material | Apr 16, 2021 | — |
| DEFA14A | Additional proxy material | Apr 12, 2021 | — |
| DEF 14A | Proxy statement | Apr 12, 2021 | May 26, 2021 |
| PRE 14A | Preliminary proxy statement | Apr 1, 2021 | May 26, 2021 |
Showing 24 filings. 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.