UMB Financial (UMBF) CEO Kemper J. Mariner Sells 15,062 Shares

What Happened
Kemper J. Mariner, Chairman, CEO and a director of UMB Financial Corp. (UMBF), reported an open-market sale of 15,062 shares on August 4, 2026. The weighted-average sale price was $148.55 per share (range $148.16–$149.11), for total reported proceeds of $2,237,460. This was a sale (disposition) of existing shares rather than a purchase or option exercise.

Key Details

• Transaction date: 2026-08-04 (reported on Form 4 filed 2026-08-06). Filing appears timely (filed two days after the trade).
• Transaction type/code: Sale (S) — open market or private sale.
• Price: Weighted average $148.55; prices ranged $148.16 to $149.11 (per footnote).
• Shares sold: 15,062; total proceeds ≈ $2,237,460.
• Shares owned after transaction: Not specified in the information provided in this summary.
• Footnotes: F1 notes the reported price is a weighted average and the sale occurred in multiple tranches at prices within the stated range. No 10b5-1 plan or other special instruction was indicated in the provided details.

Context
Insider sales are commonly for liquidity, diversification, or tax reasons and do not necessarily signal management’s view of company fundamentals. Purchases tend to be taken as stronger signals of insider confidence than routine sales.