{"schema_version":"secwatch.filing_event.v1","accession":"0000352541-25-000076","form_type":"8-K","ticker":"LNT","cik":"0000352541","company_name":"ALLIANT ENERGY CORP","filed_at":"2025-09-26T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.062505+00:00","generated_at":"2026-05-17T05:37:41.883500+00:00","sec_items":["8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Alliant Energy prices $725M of 5.750% junior subordinated notes due 2056","bullets":["$725M principal of 5.750% junior subordinated notes due Apr 1, 2056 priced.","Net proceeds to reduce commercial paper, retire long-term debt, or general corporate purposes.","Closing expected Sept 26, 2025, subject to customary conditions.","Underwriters: BofA, MUFG, Barclays, Goldman Sachs, J.P. Morgan, Mizuho, Wells Fargo.","Notes are Fixed-to-Fixed Reset Rate junior subordinated; registered under shelf S-3."],"urls":{"canonical":"https://secwatch.observer/filing/0000352541-25-000076","json":"https://secwatch.observer/filing/0000352541-25-000076.json","markdown":"https://secwatch.observer/filing/0000352541-25-000076.md","text":"https://secwatch.observer/filing/0000352541-25-000076.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/352541/000035254125000076/0000352541-25-000076-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/352541/000035254125000076/lnt-20250923.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T05:37:41.883500+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"}