SOUTHERN CO — Investor Relations & Filings
Filings indexed
4,717
across all filing types
Latest filing
2026-05-20
Regulatory Filings
Country
US
United States of America
Listing
US
SO
Southern Company is an energy holding company engaged in the generation, transmission, and distribution of electricity, as well as the distribution of natural gas. As a leading producer of electricity in the United States and a major wholesale provider in the Southeast, it serves approximately 9 million customers. The company focuses on delivering clean, safe, reliable, and affordable energy solutions. Its business includes the development, construction, acquisition, and management of a diverse portfolio of generation assets, encompassing renewable energy projects and advanced nuclear facilities like Plant Vogtle, to meet the energy needs of communities and businesses.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| SD | 2026-05-20 | English | |
| 8-K | 2026-05-15 | English | |
| DEFA14A | 2026-05-05 | English | |
| Major Shareholding Notification 2026 | 2026-04-30 | English | |
| ARS - SOUTHERN CO (0000092122) (Filer) | 2026-04-03 | English | |
| DEFA14A | 2026-04-03 | English |
Browse filings by year
27 years- 2026 62 filings
- 2025 166 filings
- 2024 177 filings
- 2023 188 filings
- 2022 136 filings
- 2021 188 filings
- 2020 155 filings
- 2019 186 filings
- 2018 138 filings
- 2017 132 filings
- 2016 178 filings
- 2015 218 filings
- 2014 243 filings
- 2013 246 filings
- 2012 228 filings
- 2011 227 filings
- 2010 188 filings
- 2009 209 filings
- 2008 182 filings
- 2007 204 filings
- 2006 224 filings
- 2005 221 filings
- 2004 202 filings
- 2003 169 filings
- 2002 53 filings
- 2001 75 filings
- 2000 122 filings
| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
15 filings
| |||||
| 46680477 | SD | 2026-05-20 | English | ||
| 46361911 | 8-K | 2026-05-15 | English | ||
| 45994652 | DEFA14A | 2026-05-05 | English | ||
| 45994662 | Major Shareholding Notification 2026 | 2026-04-30 | English | ||
| 33273267 | ARS - SOUTHERN CO (0000092122) (Filer) | 2026-04-03 | English | ||
| 45994684 | DEFA14A | 2026-04-03 | English | ||
| 33273148 | DEF 14A - SOUTHERN CO (0000092122) (Filer) | 2026-04-03 | English | ||
| 33063843 | SCHEDULE 13G/A - SOUTHERN CO (0000092122) (Subject) | 2026-03-27 | English | ||
| 33015618 | PRE 14A - SOUTHERN CO (0000092122) (Filer) | 2026-03-23 | English | ||
| 32988790 | 4 - SOUTHERN CO (0000092122) (Issuer) | 2026-03-19 | English | ||
| 32988297 | 8-K - SOUTHERN CO (0000092122) (Filer) | 2026-03-19 | English | ||
| 32980739 | 144 - SOUTHERN CO (0000092122) (Subject) | 2026-03-19 | English | ||
| 32966473 | 424B2 - SOUTHERN CO (0000092122) (Filer) | 2026-03-17 | English | ||
| 45994698 | FWP | 2026-03-16 | English | ||
| 45994693 | 424B5 | 2026-03-16 | English | ||
Market data
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Peer group · Electric power transmission and distribution activities
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|---|---|---|---|
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CIA ESTADUAL DE DISTRIBUIÇÃO DE ENERGIA ELETRICA
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CMS ENERGY CORP
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C.N.T.E.E. Transelectrica
Manages and operates the national electricity transmission …
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COMPANHIA CELG DE PARTICIPAÇÕES - CELGPAR
Holding company managing electricity generation, transmissi…
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COMPANHIA ENERGÉTICA DE BRASÍLIA - CEB
Energy holding company focused on generation, transmission,…
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— | BR | Electricity, gas, steam and air… |
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COMPAÑIA ELECTRICA DEL LITORAL S.A.
Distributes and sells electrical energy in the southern coa…
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SOUTHERN CO via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/29866/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=29866 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=29866 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
Full reference: API reference · OpenAPI schema
cURL
$ curl https://api.financialreports.eu/api/filings/?company=29866 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 29866}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for SOUTHERN CO (id: 29866)"
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