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 |
|---|---|---|---|
| 424B2 | Prospectus | Jun 8, 2026 | — |
| S-3ASR | Automatic shelf registration | Jun 5, 2026 | — |
| 424B2 | Prospectus | Mar 17, 2026 | — |
| FWP | Free writing prospectus | Mar 16, 2026 | — |
| 424B5 | Prospectus supplement | Mar 16, 2026 | — |
| 424B2 | Prospectus | Nov 4, 2025 | — |
| FWP | Free writing prospectus | Nov 4, 2025 | — |
| 424B5 | Prospectus supplement | Nov 3, 2025 | — |
| 424B2 | Prospectus | Feb 26, 2025 | — |
| FWP | Free writing prospectus | Feb 25, 2025 | — |
| 424B5 | Prospectus supplement | Feb 25, 2025 | — |
| 424B2 | Prospectus | Jan 10, 2025 | — |
| FWP | Free writing prospectus | Jan 8, 2025 | — |
| 424B5 | Prospectus supplement | Jan 8, 2025 | — |
| 424B2 | Prospectus | Sep 5, 2024 | — |
| FWP | Free writing prospectus | Sep 4, 2024 | — |
| 424B5 | Prospectus supplement | Sep 4, 2024 | — |
| 424B2 | Prospectus | May 3, 2024 | — |
| S-8 | Employee stock plan registration | May 3, 2024 | — |
| 424B2 | Prospectus | Feb 27, 2024 | — |
| 424B2 | Prospectus | Feb 27, 2024 | — |
| FWP | Free writing prospectus | Feb 26, 2024 | — |
| FWP | Free writing prospectus | Feb 26, 2024 | — |
| 424B5 | Prospectus supplement | Feb 26, 2024 | — |
| 424B5 | Prospectus supplement | Feb 26, 2024 | — |
| S-3ASR | Automatic shelf registration | Feb 16, 2024 | — |
| S-3ASR | Automatic shelf registration | Feb 16, 2024 | — |
| 424B2 | Prospectus | Sep 6, 2023 | — |
| 424B2 | Prospectus | Sep 6, 2023 | — |
| FWP | Free writing prospectus | Sep 5, 2023 | — |
| FWP | Free writing prospectus | Sep 5, 2023 | — |
| 424B5 | Prospectus supplement | Sep 5, 2023 | — |
| 424B5 | Prospectus supplement | Sep 5, 2023 | — |
| 424B2 | Prospectus | May 16, 2023 | — |
| 424B2 | Prospectus | May 16, 2023 | — |
| FWP | Free writing prospectus | May 15, 2023 | — |
| FWP | Free writing prospectus | May 15, 2023 | — |
| 424B5 | Prospectus supplement | May 15, 2023 | — |
| 424B5 | Prospectus supplement | May 15, 2023 | — |
| 424B2 | Prospectus | Oct 4, 2022 | — |
| 424B2 | Prospectus | Oct 4, 2022 | — |
| FWP | Free writing prospectus | Oct 3, 2022 | — |
| FWP | Free writing prospectus | Oct 3, 2022 | — |
| 424B5 | Prospectus supplement | Oct 3, 2022 | — |
| 424B5 | Prospectus supplement | Oct 3, 2022 | — |
| 424B2 | Prospectus | May 6, 2022 | — |
| FWP | Free writing prospectus | May 5, 2022 | — |
| 424B5 | Prospectus supplement | May 5, 2022 | — |
| 424B2 | Prospectus | Nov 8, 2021 | — |
| FWP | Free writing prospectus | Nov 5, 2021 | — |
| 424B5 | Prospectus supplement | Nov 5, 2021 | — |
| 424B2 | Prospectus | Nov 5, 2021 | — |
| 424B2 | Prospectus | Sep 14, 2021 | — |
| FWP | Free writing prospectus | Sep 13, 2021 | — |
| 424B5 | Prospectus supplement | Sep 8, 2021 | — |
| S-8 POS | Filing | May 27, 2021 | — |
| S-8 | Employee stock plan registration | May 27, 2021 | — |
| 424B2 | Prospectus | May 4, 2021 | — |
| FWP | Free writing prospectus | May 3, 2021 | — |
| 424B5 | Prospectus supplement | May 3, 2021 | — |
| 424B2 | Prospectus | Feb 24, 2021 | — |
| 424B2 | Prospectus | Feb 24, 2021 | — |
| FWP | Free writing prospectus | Feb 23, 2021 | — |
| FWP | Free writing prospectus | Feb 23, 2021 | — |
| 424B5 | Prospectus supplement | Feb 23, 2021 | — |
| 424B5 | Prospectus supplement | Feb 23, 2021 | — |
| S-3ASR | Automatic shelf registration | Feb 19, 2021 | — |
| S-3ASR | Automatic shelf registration | Feb 19, 2021 | — |
Showing 68 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.
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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.