{"schema_version":"secwatch.filing_event.v1","accession":"0000352541-24-000084","form_type":"8-K","ticker":"LNT","cik":"0000352541","company_name":"ALLIANT ENERGY CORP","filed_at":"2024-07-26T23:59:59+00:00","discovered_at":"2026-05-14T18:03:15.505668+00:00","generated_at":"2026-05-31T16:04:11.542524+00:00","sec_items":["5.04","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"Alliant Energy 401(k) blackout period Aug 30 - week of Sep 22, 2024 due to service provider switch to Fidelity","bullets":["Blackout begins Aug 30, 2024 at 3:00 p.m. CT and ends during the week of Sep 22, 2024.","Plan changes recordkeeping and trustee services to Fidelity Workplace Services, LLC.","Participants cannot change contributions, investments, or request loans/distributions during blackout.","Directors and executive officers prohibited from trading Alliant Energy stock (LNT) during blackout under Reg BTR.","Notice sent to directors/executives on Jul 26, 2024; contacts: Omar Chaudhary (608-458-3186)."],"urls":{"canonical":"https://secwatch.observer/filing/0000352541-24-000084","json":"https://secwatch.observer/filing/0000352541-24-000084.json","markdown":"https://secwatch.observer/filing/0000352541-24-000084.md","text":"https://secwatch.observer/filing/0000352541-24-000084.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/352541/000035254124000084/0000352541-24-000084-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/352541/000035254124000084/lnt-20240722.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T16:04:11.542524+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"}