{"schema_version":"secwatch.filing_event.v1","accession":"0001993004-24-000075","form_type":"8-K","ticker":"NWE","cik":"0001993004","company_name":"NorthWestern Energy Group, Inc.","filed_at":"2024-08-02T23:59:59+00:00","discovered_at":"2026-05-14T18:03:15.324837+00:00","generated_at":"2026-05-31T13:31:43.812035+00:00","sec_items":["1.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"NWE to acquire PSE's 25% Colstrip interest for $0; ownership to rise to 40%/70% of Units 3/4 by Dec 31, 2025","bullets":["Acquisition price is $0; NWE assumes operational costs from Jan 1, 2026; PSE retains pre-closing environmental and pension liabilities.","Combined with prior Avista deal (15% each unit), NWE will own 40% of Unit 3 and 70% of Unit 4 post-closing.","Transaction effective Dec 31, 2025, subject to regulatory approvals including FERC and possibly state commissions.","Other Colstrip owners have right of first refusal; NWE may exercise its ROFR if triggered.","Condition to close includes NWE entering a new coal supply agreement by Dec 31, 2024 (waivable)."],"urls":{"canonical":"https://secwatch.observer/filing/0001993004-24-000075","json":"https://secwatch.observer/filing/0001993004-24-000075.json","markdown":"https://secwatch.observer/filing/0001993004-24-000075.md","text":"https://secwatch.observer/filing/0001993004-24-000075.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000075/0001993004-24-000075-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1993004/000199300424000075/nwe-20240730.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T13:31:43.812035+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"}