{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-23-044152","form_type":"8-K","ticker":"UMBF","cik":"0000101382","company_name":"UMB FINANCIAL CORP","filed_at":"2023-08-23T23:59:59+00:00","discovered_at":"2026-05-14T18:03:32.868443+00:00","generated_at":"2026-06-11T04:37:36.358794+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Director Alexander C. Kemper resigns from UMB Financial board effective immediately","bullets":["Alexander C. Kemper resigned as director on August 18, 2023.","Resignation is not due to any disagreement with the company or its management.","No replacement was announced at the time of filing."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-23-044152","json":"https://secwatch.observer/filing/0000950170-23-044152.json","markdown":"https://secwatch.observer/filing/0000950170-23-044152.md","text":"https://secwatch.observer/filing/0000950170-23-044152.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/101382/000095017023044152/0000950170-23-044152-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/101382/000095017023044152/umbf-20230818.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-11T04:37:36.358794+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":[{"claim_id":"a90bbc8767","claim":"Alexander C. Kemper resigned as Director at UMB FINANCIAL CORP.","evidence_excerpt":"On August 18, 2023, Director Alexander C. Kemper provided notice to UMB Financial Corporation (the “Company”) that he is resigning from the Company’s board of directors, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/101382/000095017023044152/0000950170-23-044152-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}