{"filing":{"accession_number":"0000755001-26-000031","cik":"0000755001","ticker":"UTL","company_name":"UNITIL CORP","form":"8-K","filing_date":"2026-09-29","report_date":"2026-09-24","primary_document":"utl-20260924.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/755001/000075500126000031/utl-20260924.htm"},"events":[{"id":35785,"run_id":32977,"accession_number":"0000755001-26-000031","anchor_item_number":"1.01","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.92,"summary":"Unitil Corporation entered into a Note Purchase Agreement on September 24, 2026, issuing $27 million of 5.42% Senior Unsecured Notes due 2031 and $33 million of 5.79% Senior Unsecured Notes due 2036, totaling $60 million in new debt. Proceeds will be used for capital contributions to utility subsidiaries, debt refinancing, and general corporate purposes.","company_name":"UNITIL CORP","ticker":"UTL","filing_date":"2026-09-29","form":"8-K","submitted_at":null,"items":[{"id":39962,"accession_number":"0000755001-26-000031","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Unitil Corporation entered into a Note Purchase Agreement on September 24, 2026, issuing $27 million of 5.42% Senior Unsecured Notes due 2031 and $33 million of 5.79% Senior Unsecured Notes due 2036, totaling $60 million in new debt. The company plans to use proceeds for capital contributions to utility subsidiaries, debt refinancing, and general corporate purposes. This is a material creation of direct financial obligations meeting the definition of debt_issuance.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-29T20:31:38.768392+00:00","company_name":"","ticker":null,"filing_date":""},{"id":39963,"accession_number":"0000755001-26-000031","item_number":"2.03","item_title":"Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"reasoning":"Item 2.03 explicitly addresses creation of a direct financial obligation. The incorporation by reference to Item 1.01 (which typically covers material agreements and transactions) indicates a debt issuance or credit facility arrangement. This is a material financial event for a utility company like Unitil Corp.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-29T20:31:38.768392+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":39962,"accession_number":"0000755001-26-000031","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Unitil Corporation entered into a Note Purchase Agreement on September 24, 2026, issuing $27 million of 5.42% Senior Unsecured Notes due 2031 and $33 million of 5.79% Senior Unsecured Notes due 2036, totaling $60 million in new debt. The company plans to use proceeds for capital contributions to utility subsidiaries, debt refinancing, and general corporate purposes. This is a material creation of direct financial obligations meeting the definition of debt_issuance.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-29T20:31:38.768392+00:00","company_name":"UNITIL CORP","ticker":"UTL","filing_date":"2026-09-29"},{"id":39963,"accession_number":"0000755001-26-000031","item_number":"2.03","item_title":"Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"reasoning":"Item 2.03 explicitly addresses creation of a direct financial obligation. The incorporation by reference to Item 1.01 (which typically covers material agreements and transactions) indicates a debt issuance or credit facility arrangement. This is a material financial event for a utility company like Unitil Corp.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-29T20:31:38.768392+00:00","company_name":"UNITIL CORP","ticker":"UTL","filing_date":"2026-09-29"}]}