{"schema_version":"secwatch.filing_event.v1","accession":"0001993004-26-000046","form_type":"8-K","ticker":"NWE","cik":"0001993004","company_name":"NorthWestern Energy Group, Inc.","filed_at":"2026-06-22T14:47:07+00:00","discovered_at":"2026-06-22T14:48:00.272083+00:00","generated_at":"2026-06-22T14:48:07.255549+00:00","sec_items":["1.01","2.03","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"NorthWestern Energy subsidiary issues $150M in 5.51% First Mortgage Bonds due 2036","bullets":["Issued $150M aggregate principal of South Dakota First Mortgage Bonds on June 15, 2026.","Bonds carry a 5.51% interest rate and mature on June 15, 2036.","Bonds rank equally with all current and future first-mortgage-secured debt.","NWE Public Service may redeem bonds at any time prior to maturity at a make-whole price.","Proceeds used for general corporate purposes; issuance exempt from SEC registration."],"urls":{"canonical":"https://secwatch.observer/filing/0001993004-26-000046","json":"https://secwatch.observer/filing/0001993004-26-000046.json","markdown":"https://secwatch.observer/filing/0001993004-26-000046.md","text":"https://secwatch.observer/filing/0001993004-26-000046.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000046/0001993004-26-000046-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000046/nwe-20260615.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-22T14:48:07.255549+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":"ac69e11f6265dcf1bd460212a377508bcea6f7b6","claim":"NorthWestern Energy Group, Inc. incurred senior notes of $150 million with The Bank of New York Mellon at 5.51% maturing June 15, 2036.","evidence_excerpt":"The SD Bonds were drawn and issued in one series as follows: Issue Date Maturity Date Principal Amount Interest Rate June 15, 2026 June 15, 2036 $150 million 5.51%","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000046/0001993004-26-000046-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"senior notes"},{"label":"Principal","value":"$150 million"},{"label":"Counterparty","value":"The Bank of New York Mellon"},{"label":"Rate","value":"5.51%"},{"label":"Maturity","value":"June 15, 2036"},{"label":"Event","value":"incurrence"}],"fact_type":"debt_financing"},{"claim_id":"b99647586e26a4395dbd7d53942c63d9509c043e","claim":"NorthWestern Energy Group, Inc. entered into Twenty-third Supplemental Indenture with The Bank of New York Mellon valued at $150 million (effective 2026-06-01).","evidence_excerpt":"The SD Bonds were drawn and issued in one series as follows: Issue Date Maturity Date Principal Amount Interest Rate June 15, 2026 June 15, 2036 $150 million 5.51% The terms of the SD Bonds were established in the Twenty-third Supplemental Indenture, dated as of June 1, 2026 (the \" SD Supplemental Indenture \"), between NWE Public Service and The Bank of New York Mellon, as trustee.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1993004/000199300426000046/0001993004-26-000046-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"},{"label":"Value","value":"$150 million"},{"label":"Effective","value":"2026-06-01"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}