{"schema_version":"secwatch.filing_event.v1","accession":"0000092122-25-000060","form_type":"8-K","ticker":"SO","cik":"0000092122","company_name":"SOUTHERN CO","filed_at":"2025-05-27T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.825735+00:00","generated_at":"2026-05-20T12:32:41.300964+00:00","sec_items":["2.03","3.02","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Southern Company issues $1.65B of 3.25% Convertible Senior Notes due 2028","bullets":["Issued $1.65B of 3.25% Convertible Senior Notes due June 15, 2028; includes $200M over-allotment.","Initial conversion rate: 8.8077 shares per $1,000 principal (~$113.54/share); convertible under specified conditions.","Settles conversions in cash for principal amount, plus cash/stock for excess at company's election; notes not redeemable.","Sold via private placement to QIBs under Rule 144A; shares issuable upon conversion are unregistered.","Interest payable semi-annually starting Dec 15, 2025; matures June 15, 2028, unless converted or repurchased."],"urls":{"canonical":"https://secwatch.observer/filing/0000092122-25-000060","json":"https://secwatch.observer/filing/0000092122-25-000060.json","markdown":"https://secwatch.observer/filing/0000092122-25-000060.md","text":"https://secwatch.observer/filing/0000092122-25-000060.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/92122/000009212225000060/0000092122-25-000060-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/92122/000009212225000060/so-20250520.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-20T12:32:41.300964+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":[{"claim_id":"7fea0ea49127e402a00f568b058f6548c3ffbb93","claim":"SOUTHERN CO incurred convertible notes of $1,650,000,000 aggregate principal amount with Computershare Trust Company, N.A., as successor trustee, and initial purchasers at 3.25% maturing June 15, 2028.","evidence_excerpt":"On May 23, 2025, The Southern Company (the \"Company\") issued $1,650,000,000 aggregate principal amount of its Series 2025A 3.25% Convertible Senior Notes due June 15, 2028 (the \"Series 2025A Convertible Senior Notes\")","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/92122/000009212225000060/0000092122-25-000060-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"convertible notes"},{"label":"Principal","value":"$1,650,000,000 aggregate principal amount"},{"label":"Counterparty","value":"Computershare Trust Company, N.A., as successor trustee, and initial purchasers"},{"label":"Rate","value":"3.25%"},{"label":"Maturity","value":"June 15, 2028"},{"label":"Event","value":"incurrence"}],"fact_type":"debt_financing"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}