{"filing":{"accession_number":"0000887343-26-000173","cik":"0000887343","ticker":"COLB","company_name":"COLUMBIA BANKING SYSTEM, INC.","form":"8-K","filing_date":"2026-08-14","report_date":"2026-08-14","primary_document":"colb-20260814.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/887343/000088734326000173/colb-20260814.htm"},"events":[{"id":27986,"run_id":25565,"accession_number":"0000887343-26-000173","anchor_item_number":"8.01","event_type":"dividend_distribution","event_domain":"financial","is_material":true,"confidence":0.98,"summary":"Columbia Banking System's Board approved a quarterly cash dividend of $0.37 per common share, payable September 14, 2026. This is a routine but material capital allocation decision that affects shareholder returns and is disclosed via press release in Item 8.01. Dividend declarations are standard material events for public companies and would affect a reasonable investor's assessment of capital policy and shareholder value.","company_name":"COLUMBIA BANKING SYSTEM, INC.","ticker":"COLB","filing_date":"2026-08-14","form":"8-K","submitted_at":null,"items":[{"id":29736,"accession_number":"0000887343-26-000173","item_number":"8.01","item_title":"Other Events.","event_type":"dividend_distribution","event_domain":"financial","is_material":true,"confidence":0.98,"reasoning":"Columbia Banking System's Board approved a quarterly cash dividend of $0.37 per common share, payable September 14, 2026. This is a routine but material capital allocation decision that affects shareholder returns and is disclosed via press release in Item 8.01. Dividend declarations are standard material events for public companies and would affect a reasonable investor's assessment of capital policy and shareholder value.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-14T20:45:21.410358+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":29736,"accession_number":"0000887343-26-000173","item_number":"8.01","item_title":"Other Events.","event_type":"dividend_distribution","event_domain":"financial","is_material":true,"confidence":0.98,"reasoning":"Columbia Banking System's Board approved a quarterly cash dividend of $0.37 per common share, payable September 14, 2026. This is a routine but material capital allocation decision that affects shareholder returns and is disclosed via press release in Item 8.01. Dividend declarations are standard material events for public companies and would affect a reasonable investor's assessment of capital policy and shareholder value.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-14T20:45:21.410358+00:00","company_name":"COLUMBIA BANKING SYSTEM, INC.","ticker":"COLB","filing_date":"2026-08-14"}]}