{"filing":{"accession_number":"0001331463-26-000178","cik":"0001331463","ticker":null,"company_name":"Federal Home Loan Bank of Boston","form":"8-K","filing_date":"2026-09-15","report_date":"2026-09-09","primary_document":"fhlbbost-20260909.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1331463/000133146326000178/fhlbbost-20260909.htm"},"events":[{"id":33587,"run_id":30888,"accession_number":"0001331463-26-000178","anchor_item_number":"2.03","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"summary":"The filing discloses the creation of direct financial obligations through the issuance of consolidated obligations (bonds and discount notes) by the Federal Home Loan Bank of Boston. Schedule A details multiple debt securities issued on trade dates of September 9-11, 2026, with principal amounts totaling approximately $1.015 billion across fixed-rate bonds, callable bonds, and variable-rate floaters. This represents a material creation of new debt obligations under Item 2.03.","company_name":"Federal Home Loan Bank of Boston","ticker":null,"filing_date":"2026-09-15","form":"8-K","submitted_at":null,"items":[{"id":37071,"accession_number":"0001331463-26-000178","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":0.95,"reasoning":"The filing discloses the creation of direct financial obligations through the issuance of consolidated obligations (bonds and discount notes) by the Federal Home Loan Bank of Boston. Schedule A details multiple debt securities issued on trade dates of September 9-11, 2026, with principal amounts totaling approximately $1.015 billion across fixed-rate bonds, callable bonds, and variable-rate floaters. This represents a material creation of new debt obligations under Item 2.03.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-15T19:05:45.152805+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":37071,"accession_number":"0001331463-26-000178","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":0.95,"reasoning":"The filing discloses the creation of direct financial obligations through the issuance of consolidated obligations (bonds and discount notes) by the Federal Home Loan Bank of Boston. Schedule A details multiple debt securities issued on trade dates of September 9-11, 2026, with principal amounts totaling approximately $1.015 billion across fixed-rate bonds, callable bonds, and variable-rate floaters. This represents a material creation of new debt obligations under Item 2.03.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-15T19:05:45.152805+00:00","company_name":"Federal Home Loan Bank of Boston","ticker":null,"filing_date":"2026-09-15"}]}