secwatch.observer — SEC 8-K summary ====================================== Issuer: SOUTHERN CO (SO) CIK: 0000092122 Form: 8-K Filed at: 2026-03-19T23:59:59+00:00 Accession: 0000092122-26-000018 Event type: debt Sentiment: neutral Materiality: 0.55 Item codes: 8.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Southern Company issues $1.3B of 6.00% junior subordinated notes due 2058 ------------------------------------------------------------------------- - Issued $1.3B aggregate principal of Series 2026A 6.00% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due April 1, 2058. - Underwriting agreement signed March 16, 2026, with Citigroup, J.P. Morgan, Mizuho, Morgan Stanley, and U.S. Bancorp as representatives. - Notes are registered under the existing shelf registration statement (No. 333-277138). Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/92122/000009212226000018/0000092122-26-000018-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/92122/000009212226000018/so-20260316.htm HTML page: https://secwatch.observer/filing/0000092122-26-000018 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer