{"filing":{"accession_number":"0001733998-26-000145","cik":"0001733998","ticker":"NWN","company_name":"Northwest Natural Holding Co","form":"8-K","filing_date":"2026-09-22","report_date":"2026-09-22","primary_document":"nwn-20260922.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1733998/000173399826000145/nwn-20260922.htm"},"events":[{"id":34424,"run_id":31671,"accession_number":"0001733998-26-000145","anchor_item_number":"8.01","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"summary":"Northwest Natural Holding Co announced settlement of a Texas general rate case for its SiEnergy Gas subsidiaries, providing for an $8.6 million annual revenue increase, a $343 million rate base, a 59.75% equity capital structure, and a 9.8% return on equity. This material regulatory milestone consolidates entities and establishes favorable terms affecting the subsidiary's future operations and profitability.","company_name":"Northwest Natural Holding Co","ticker":"NWN","filing_date":"2026-09-22","form":"8-K","submitted_at":null,"items":[{"id":38138,"accession_number":"0001733998-26-000145","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"The disclosure announces a settlement in a Texas general rate case for SiEnergy subsidiaries, providing for an $8.6 million annual revenue increase, a 59.75% equity capital structure, 9.8% return on equity, and a $343 million rate base. This is a material regulatory milestone affecting the subsidiary's future operations and profitability, but does not fit the specific categories of earnings release, M\u0026A activity, litigation settlement, or other named event types. It is clearly operational/regulatory in nature and material to investors assessing the registrant's growth and earnings prospects.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T10:03:47.891391+00:00","company_name":"","ticker":null,"filing_date":""},{"id":38139,"accession_number":"0001733998-26-000145","item_number":"8.01","item_title":"Other Events","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"The disclosure reports settlement of a Texas general rate case for SiEnergy Gas subsidiaries, providing for an $8.6 million revenue requirement increase, consolidation of entities, and establishment of a $343 million rate base with specific capital structure and return on equity terms. This is a material regulatory milestone affecting the company's Texas operations and future earnings, but does not fit neatly into the specific event categories (not a debt issuance, not a material impairment, not a workforce reduction). It is clearly operational/regulatory in nature—a significant rate case settlement that will affect future revenues and capital structure—making operational_other the most appropriate classification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T10:03:47.891391+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":38138,"accession_number":"0001733998-26-000145","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"The disclosure announces a settlement in a Texas general rate case for SiEnergy subsidiaries, providing for an $8.6 million annual revenue increase, a 59.75% equity capital structure, 9.8% return on equity, and a $343 million rate base. This is a material regulatory milestone affecting the subsidiary's future operations and profitability, but does not fit the specific categories of earnings release, M\u0026A activity, litigation settlement, or other named event types. It is clearly operational/regulatory in nature and material to investors assessing the registrant's growth and earnings prospects.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T10:03:47.891391+00:00","company_name":"Northwest Natural Holding Co","ticker":"NWN","filing_date":"2026-09-22"},{"id":38139,"accession_number":"0001733998-26-000145","item_number":"8.01","item_title":"Other Events","event_type":"operational_other","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"The disclosure reports settlement of a Texas general rate case for SiEnergy Gas subsidiaries, providing for an $8.6 million revenue requirement increase, consolidation of entities, and establishment of a $343 million rate base with specific capital structure and return on equity terms. This is a material regulatory milestone affecting the company's Texas operations and future earnings, but does not fit neatly into the specific event categories (not a debt issuance, not a material impairment, not a workforce reduction). It is clearly operational/regulatory in nature—a significant rate case settlement that will affect future revenues and capital structure—making operational_other the most appropriate classification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T10:03:47.891391+00:00","company_name":"Northwest Natural Holding Co","ticker":"NWN","filing_date":"2026-09-22"}]}