{"schema_version":"secwatch.filing_event.v1","accession":"0000352541-22-000029","form_type":"8-K","ticker":"LNT","cik":"0000352541","company_name":"ALLIANT ENERGY CORP","filed_at":"2022-03-01T23:59:59+00:00","discovered_at":"2026-05-14T18:04:09.251145+00:00","generated_at":"2026-06-27T03:15:48.019497+00:00","sec_items":["1.01","2.03","8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Alliant Energy unit issues $350M of 3.600% Senior Notes due 2032","bullets":["$350 million aggregate principal, 3.600% interest, maturity March 1, 2032.","Fully and unconditionally guaranteed by Alliant Energy on senior unsecured basis.","Net proceeds to reduce outstanding commercial paper and for general corporate purposes.","Private offering under Rule 144A and Regulation S; not registered under Securities Act.","Closing expected Feb 28, 2022, subject to customary conditions."],"urls":{"canonical":"https://secwatch.observer/filing/0000352541-22-000029","json":"https://secwatch.observer/filing/0000352541-22-000029.json","markdown":"https://secwatch.observer/filing/0000352541-22-000029.md","text":"https://secwatch.observer/filing/0000352541-22-000029.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/352541/000035254122000029/0000352541-22-000029-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/352541/000035254122000029/lnt-20220223.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-27T03:15:48.019497+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"}