{"schema_version":"secwatch.filing_event.v1","accession":"0000092122-26-000018","form_type":"8-K","ticker":"SO","cik":"0000092122","company_name":"SOUTHERN CO","filed_at":"2026-03-19T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.036400+00:00","generated_at":"2026-05-15T09:48:00.025703+00:00","sec_items":["8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Southern Company issues $1.3B of 6.00% junior subordinated notes due 2058","bullets":["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)."],"urls":{"canonical":"https://secwatch.observer/filing/0000092122-26-000018","json":"https://secwatch.observer/filing/0000092122-26-000018.json","markdown":"https://secwatch.observer/filing/0000092122-26-000018.md","text":"https://secwatch.observer/filing/0000092122-26-000018.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/92122/000009212226000018/0000092122-26-000018-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/92122/000009212226000018/so-20260316.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T09:48:00.025703+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}