{"schema_version":"secwatch.filing_event.v1","accession":"0000092122-25-000028","form_type":"8-K","ticker":"SO","cik":"0000092122","company_name":"SOUTHERN CO","filed_at":"2025-02-28T23:59:59+00:00","discovered_at":"2026-05-14T18:03:06.815675+00:00","generated_at":"2026-05-26T00:50:54.892281+00:00","sec_items":["8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Southern Company issues $1.8B of 6.375% junior subordinated notes due 2055","bullets":["Issued $1.8B aggregate principal of Series 2025B 6.375% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due March 15, 2055.","Underwriting agreement dated Feb 25, 2025 with Barclays, Citigroup, Mizuho, MUFG, PNC, Truist as representatives.","Notes are junior subordinated obligations; coupon resets after initial fixed period.","Registered under shelf registration statement No. 333-277138."],"urls":{"canonical":"https://secwatch.observer/filing/0000092122-25-000028","json":"https://secwatch.observer/filing/0000092122-25-000028.json","markdown":"https://secwatch.observer/filing/0000092122-25-000028.md","text":"https://secwatch.observer/filing/0000092122-25-000028.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/92122/000009212225000028/0000092122-25-000028-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/92122/000009212225000028/so-20250225.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-26T00:50:54.892281+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"}