{"url_path":"/sec/so/8-k/2026-06-08/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-08","source_url":"https://www.sec.gov/Archives/edgar/data/92122/0000092122-26-000046-index.html","accession_number":"0000092122-26-000046","cik":"0000092122","ticker":"SO","issuer_name":"SOUTHERN CO","edgar_url":"https://www.sec.gov/Archives/edgar/data/92122/0000092122-26-000046-index.html","primary_entity_key":"0000092122","primary_entity_name":"SOUTHERN CO"},"word_count":365,"has_tables":true,"body_markdown":"so-20260608\n0000092122FALSE00000921222026-06-082026-06-080000092122us-gaap:CommonStockMember2026-06-082026-06-080000092122so:Series2017B5.25JuniorSubordinatedNotesDue2077Member2026-06-082026-06-080000092122so:Series2020A4.95JuniorSubordinatedNotesDue2080Member2026-06-082026-06-080000092122so:Series2020C420JuniorSubordinatedNotesDue2060Member2026-06-082026-06-080000092122so:Series2021B1875FixedToFixedResetRateJuniorSubordinatedNotesDue2081Member2026-06-082026-06-080000092122so:Series2025A6.50JuniorSubordinatedNotesDue2085Member2026-06-082026-06-080000092122so:A2025SeriesACorporateUnitsMember2026-06-082026-06-08\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D. C. 20549\n\nFORM 8-K\n\nCURRENT REPORT\n\nPursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934\n\nDate of Report (Date of earliest event reported)June 8, 2026\n\nCommission\nFile NumberRegistrant,\nState of Incorporation,\nAddress and Telephone NumberI.R.S. Employer\nIdentification No.\n\n1-3526The Southern Company58-0690070\n\n(A Delaware Corporation)\n\n30 Ivan Allen Jr. Boulevard, N.W.\n\nAtlanta, Georgia 30308\n\n(404) 506-5000\n\nThe name and address of the registrant have not changed since the last report.\n\nCheck the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n☐\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n☐\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n☐\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n☐\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\nSecurities registered pursuant to Section 12(b) of the Act:\n\nRegistrantTitle of each classTrading\nSymbol(s)Name of each exchange\non which registered\n\nThe Southern CompanyCommon Stock, par value $0.01 per shareSONew York Stock Exchange\n\nThe Southern CompanySeries 2017B 5.25% Junior Subordinated Notes due 2077SOJCNew York Stock Exchange\n\nThe Southern CompanySeries 2020A 4.95% Junior Subordinated Notes due 2080SOJDNew York Stock Exchange\n\nThe Southern Company\nSeries 2020C 4.20% Junior Subordinated Notes due 2060\nSOJENew York Stock Exchange\n\nThe Southern CompanySeries 2021B 1.875% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2081SO 81New York Stock Exchange\n\nThe Southern CompanySeries 2025A 6.50% Junior Subordinated Notes due 2085SOJFNew York Stock Exchange\n\nThe Southern Company2025 Series A Corporate UnitsSOMNNew York Stock Exchange\n\nIndicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\nEmerging growth company  ☐\n\nIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐"}