{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-360020","form_type":"8-K","ticker":"LNT","cik":"0000352541","company_name":"ALLIANT ENERGY CORP","filed_at":"2026-08-21T12:45:22+00:00","discovered_at":"2026-08-21T12:50:00.458220+00:00","generated_at":"2026-08-21T12:50:07.117424+00:00","sec_items":["8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"IPL prices $500M 5.100% senior debentures due 2031; proceeds for debt reduction","bullets":["IPL (subsidiary of Alliant Energy, LNT) priced $500M aggregate 5.100% senior debentures due Sept 30, 2031.","Use of proceeds: reduce receivables purchase/sale program, commercial paper, and general corporate purposes.","Offering expected to close Aug 21, 2026; joint book-runners include Mizuho, PNC, U.S. Bancorp, Wells Fargo.","Debentures issued under shelf registration filed Dec 15, 2023 (Reg. No. 333-276062-01)."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-360020","json":"https://secwatch.observer/filing/0001193125-26-360020.json","markdown":"https://secwatch.observer/filing/0001193125-26-360020.md","text":"https://secwatch.observer/filing/0001193125-26-360020.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/352541/000119312526360020/0001193125-26-360020-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/52485/000119312526360020/d440334d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-21T12:50:07.117424+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"}