{"schema_version":"secwatch.filing_event.v1","accession":"0001733998-25-000142","form_type":"8-K","ticker":"NWN","cik":"0001733998","company_name":"Northwest Natural Holding Co","filed_at":"2025-08-26T23:59:59+00:00","discovered_at":"2026-05-14T18:02:44.833912+00:00","generated_at":"2026-05-17T09:58:14.028343+00:00","sec_items":["8.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"NWN subsidiary SiEnergy issues $185M in senior notes across three tranches","bullets":["SiEnergy issues $50M 4.86% Series A notes due 2030, $40M 5.42% Series B due 2035, $95M 6.04% Series C due 2055.","Notes sold via private placement to institutional investors; interest payable semi-annually starting Dec 15, 2025.","Proceeds to be used for general corporate purposes, including repayment of existing credit agreement debt.","NW Holdings is not a party and has not guaranteed the obligations; notes secured by first-priority lien on SiEnergy assets.","Notes require SiEnergy to maintain a consolidated indebtedness-to-total capitalization ratio of 70% or less."],"urls":{"canonical":"https://secwatch.observer/filing/0001733998-25-000142","json":"https://secwatch.observer/filing/0001733998-25-000142.json","markdown":"https://secwatch.observer/filing/0001733998-25-000142.md","text":"https://secwatch.observer/filing/0001733998-25-000142.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1733998/000173399825000142/0001733998-25-000142-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1733998/000173399825000142/nwn-20250825.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T09:58:14.028343+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"}