{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-096060","form_type":"8-K","ticker":"BKH","cik":"0001130464","company_name":"BLACK HILLS CORP /SD/","filed_at":"2025-10-02T23:59:59+00:00","discovered_at":"2026-05-14T18:02:38.857617+00:00","generated_at":"2026-05-17T04:53:32.764786+00:00","sec_items":["1.01","8.01","2.03","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Black Hills issues $450M of 4.550% Notes due 2031 to refinance $300M 2026 notes","bullets":["Aggregate principal of $450M, interest 4.550%, maturing January 31, 2031.","Net proceeds to repay $300M of 3.950% notes due January 15, 2026.","Remaining proceeds for general corporate purposes including capex and acquisitions.","Notes are unsecured senior obligations ranking equally with existing unsecured debt.","Issued under existing shelf registration and supplemental indenture dated October 2, 2025."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-096060","json":"https://secwatch.observer/filing/0001104659-25-096060.json","markdown":"https://secwatch.observer/filing/0001104659-25-096060.md","text":"https://secwatch.observer/filing/0001104659-25-096060.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1130464/000110465925096060/0001104659-25-096060-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1130464/000110465925096060/tm2527704d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T04:53:32.764786+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"}