SO · CIK 0000092122
SOUTHERN CO (SO) SEC Filings
Browse 5428 SEC filings for SOUTHERN CO, covering Jan 21, 1994 through Jul 2, 2026, organized by filing purpose with direct links to the original EDGAR documents.
Indexed filings
5,428
Filed in the last 12 months
152
History covered
1994–2026
Latest filing
4
Latest important filings
Jump directly to the most recent annual, quarterly, and current reports.
Latest annual report
10-K
Annual report · Feb 19, 2026
Open original filingLatest quarterly report
10-Q
Quarterly report · Apr 30, 2026
Open original filingLatest company update
8-K
Other material event · Jun 8, 2026
Open original filingComplete filing history
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50 filings
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| Form | Description | Period ended | Filed |
|---|---|---|---|
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 4 | Change in insider ownership | Jul 1, 2026 | Jul 2, 2026 |
| 144 | Notice of proposed securities sale | — | Jul 1, 2026 |
| 4 | Change in insider ownership | Jun 28, 2026 | Jun 29, 2026 |
| 11-K | Employee benefit plan annual report | Dec 31, 2025 | Jun 26, 2026 |
| 424B2 | 424B2 filing | — | Jun 8, 2026 |
| 8-K | Other material event | Jun 8, 2026 | Jun 8, 2026 |
| S-3ASR | S-3ASR filing | — | Jun 5, 2026 |
| 144 | Notice of proposed securities sale | — | Jun 1, 2026 |
| 4 | Change in insider ownership | Jun 1, 2026 | Jun 1, 2026 |
| 4 | Change in insider ownership | May 24, 2026 | May 26, 2026 |
| SD | Specialized disclosure report | — | May 20, 2026 |
| 8-K | Shareholder vote | May 13, 2026 | May 15, 2026 |
| SCHEDULE 13G | SCHEDULE 13G filing | — | May 14, 2026 |
| DEFA14A | Additional proxy materials | — | May 5, 2026 |
Page 1 of 2
Recent filing activity
Annual filing counts derived from this company's SEC history.
2026
113 filings
2025
176 filings
2024
185 filings
2023
200 filings
2022
148 filings
2021
202 filings
2020
164 filings
2019
197 filings
Sources and methodology
How this filing index is assembled and checked.
Filing metadata comes from SEC EDGAR submissions. Categories and plain-language labels are generated deterministically from SEC form and item codes; filing content is not summarized on this page.
Index updated: 7/15/2026
For research and education only. Always review the original SEC filing before making a decision.