{"schema_version":"secwatch.filing_event.v1","accession":"0000352541-23-000115","form_type":"8-K","ticker":"LNT","cik":"0000352541","company_name":"ALLIANT ENERGY CORP","filed_at":"2023-11-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:31.656008+00:00","generated_at":"2026-06-08T05:49:56.014962+00:00","sec_items":["1.01","2.03","8.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Alliant Energy Finance issues $300M 5.950% senior notes due 2029, guaranteed by parent","bullets":["$300M aggregate principal of 5.950% senior unsecured notes, maturing March 30, 2029.","Notes are fully and unconditionally guaranteed on a senior unsecured basis by Alliant Energy Corp.","Net proceeds to reduce outstanding commercial paper and for general corporate purposes.","Interest payable semi-annually on March 30 and September 30, beginning March 30, 2024.","Offering closed on November 10, 2023; priced on November 7, 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0000352541-23-000115","json":"https://secwatch.observer/filing/0000352541-23-000115.json","markdown":"https://secwatch.observer/filing/0000352541-23-000115.md","text":"https://secwatch.observer/filing/0000352541-23-000115.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/lnt-20231107.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-08T05:49:56.014962+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":"0ba72a3cf31f5ca9d4a7f2502343c9806981f340","claim":"ALLIANT ENERGY CORP incurred senior notes of $300 million aggregate principal amount with The Bank of New York Mellon Trust Company, N.A. at 5.950% per annum maturing March 30, 2029.","evidence_excerpt":"Alliant Energy Finance, LLC (“AEF”), a wholly-owned subsidiary of Alliant Energy Corporation (“Alliant Energy”), issued $300 million aggregate principal amount of its 5.950% Senior Notes due 2029 (the “Notes”), which are fully and unconditionally guaranteed by Alliant Energy on a senior unsecured basis.","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"senior notes"},{"label":"Principal","value":"$300 million aggregate principal amount"},{"label":"Counterparty","value":"The Bank of New York Mellon Trust Company, N.A."},{"label":"Rate","value":"5.950% per annum"},{"label":"Maturity","value":"March 30, 2029"},{"label":"Event","value":"incurrence"}],"fact_type":"debt_financing"},{"claim_id":"4439c7ea371bd2eab005f9d4cf6a720597d75ef4","claim":"ALLIANT ENERGY CORP entered into Indenture with The Bank of New York Mellon Trust Company, N.A. valued at $300 million aggregate principal amount (effective 2023-11-10).","evidence_excerpt":"issued $300 million aggregate principal amount of its 5.950% Senior Notes due 2029 (the “Notes”), which are fully and unconditionally guaranteed by Alliant Energy on a senior unsecured basis","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"notes offering"},{"label":"Counterparty","value":"The Bank of New York Mellon Trust Company, N.A."},{"label":"Value","value":"$300 million aggregate principal amount"},{"label":"Effective","value":"2023-11-10"}],"fact_type":"material_agreement"},{"claim_id":"ab5e8ceee636f1c0d503ba54307d534ef2bd8747","claim":"ALLIANT ENERGY CORP entered into a notes offering valued at $300 million aggregate principal amount (effective 2023-11-10).","evidence_excerpt":"On November 10, 2023, Alliant Energy Finance, LLC (“AEF”), a wholly-owned subsidiary of Alliant Energy Corporation (“Alliant Energy”), issued $300 million aggregate principal amount of its 5.950% Senior Notes due 2029","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/352541/000035254123000115/0000352541-23-000115-index.htm","confidence":0.7,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"notes offering"},{"label":"Value","value":"$300 million aggregate principal amount"},{"label":"Effective","value":"2023-11-10"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}