{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-23-006487","form_type":"8-K","ticker":"BKH","cik":"0001130464","company_name":"BLACK HILLS CORP /SD/","filed_at":"2023-03-07T23:59:59+00:00","discovered_at":"2026-05-14T18:03:43.943253+00:00","generated_at":"2026-06-18T09:19:18.818613+00:00","sec_items":["1.01","8.01","2.03","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Black Hills issues $350M 5.950% senior notes due 2028","bullets":["Issued $350M aggregate principal of 5.950% Notes due March 15, 2028.","Net proceeds ~$346.8M after underwriting discounts and original issue discount.","Proceeds to repay commercial paper; remainder for general corporate purposes.","Notes are unsecured senior obligations ranking equally with existing unsecured debt.","Interest payable semi-annually on March 15 and September 15, starting September 15, 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-23-006487","json":"https://secwatch.observer/filing/0000950170-23-006487.json","markdown":"https://secwatch.observer/filing/0000950170-23-006487.md","text":"https://secwatch.observer/filing/0000950170-23-006487.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1130464/000095017023006487/0000950170-23-006487-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1130464/000095017023006487/bkh-20230302.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-18T09:19:18.818613+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":"d10ae31f27b276105587a536f5b65391efd33b82","claim":"BLACK HILLS CORP /SD/ entered into New Supplemental Indenture.","evidence_excerpt":"Each of the Underwriting Agreement and the New Supplemental Indenture contains representations and warranties, covenants and other terms that are customary for such kinds of agreements.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1130464/000095017023006487/0000950170-23-006487-index.htm","confidence":0.4,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"notes offering"}],"fact_type":"material_agreement"},{"claim_id":"fd391cdcb3e6600284576d8ac401e5043459d40d","claim":"BLACK HILLS CORP /SD/ entered into Underwriting Agreement.","evidence_excerpt":"Each of the Underwriting Agreement and the New Supplemental Indenture contains representations and warranties, covenants and other terms that are customary for such kinds of agreements.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1130464/000095017023006487/0000950170-23-006487-index.htm","confidence":0.4,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"underwriting"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}