---
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"
generated_at: "2026-06-11T04:37:36.358794+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Director Alexander C. Kemper resigns from UMB Financial board effective immediately

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-23-044152
- JSON: https://secwatch.observer/filing/0000950170-23-044152.json
- Plain text: https://secwatch.observer/filing/0000950170-23-044152.txt

## Key facts
- Executive change
  Alexander C. Kemper resigned as Director at UMB FINANCIAL CORP.
  - Action: resigned
  - Role: Director
  source text: 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_url: https://www.sec.gov/Archives/edgar/data/101382/000095017023044152/0000950170-23-044152-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.