J. Mariner Kemper serves as Executive at UMB FINANCIAL CORP, where they oversee executive responsibilities. Since joining the company, J. Mariner Kemper has executed 3671 insider transactions totaling $79.7M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 9, 2026 involved selling 1,904 shares valued at $255.7K.
J. Mariner Kemper currently holds 331,122.22 shares of UMB FINANCIAL CORP (UMBF), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, J. Mariner Kemper has been a net seller of UMBF stock. They have purchased $0 and sold $79.7M worth of shares.
J. Mariner Kemper's most recent insider trade was on Feb 9, 2026, when they sold 1,904 shares at $134.29 per share.
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| $114.58 |
| Discretionary |
| Oct 31, 2025 | UMBF | $0 | Award | 5,613 | $N/A | Discretionary |
| Sep 10, 2025 | UMBF | $12.3K | Sale | 100 | $122.55 | Discretionary |
| Sep 10, 2025 | UMBF | $98.1K | Sale | 800 | $122.66 | Discretionary |
| Sep 10, 2025 | UMBF | $12.3K | Sale | 100 | $122.51 | Discretionary |
| Sep 9, 2025 | UMBF | $12.5K | Sale | 100 | $124.92 | Discretionary |
| Sep 9, 2025 | UMBF | $426.3K | Sale | 3,400 | $125.37 | Discretionary |
| Aug 13, 2025 | UMBF | $1.8M | Sale | 15,523 | $116.33 | Discretionary |
| Sep 3, 2024 | UMBF | $584.3K | Sale | 5,700 | $102.50 | Discretionary |
| Sep 3, 2024 | UMBF | $1.9M | Sale | 18,600 | $103.17 | Discretionary |
| Aug 22, 2024 | UMBF | $97.8K | Sale | 1,000 | $97.85 | Discretionary |
| Aug 6, 2024 | UMBF | $9.3K | Sale | 100 | $93.02 | Discretionary |
| Aug 6, 2024 | UMBF | $9.3K | Sale | 100 | $93.02 | Discretionary |
| Aug 6, 2024 | UMBF | $562.0K | Sale | 6,043 | $93.00 | Discretionary |
| Aug 6, 2024 | UMBF | $93 | Sale | 1 | $93.08 | Discretionary |
| Aug 6, 2024 | UMBF | $761.2K | Option Exercise | 10,115 | $75.25 | Discretionary |
| Aug 6, 2024 | UMBF | $9.3K | Sale | 100 | $93.03 | Discretionary |
| Aug 6, 2024 | UMBF | $9.3K | Sale | 100 | $93.04 | Discretionary |
| Aug 6, 2024 | UMBF | $341.4K | Sale | 3,671 | $93.01 | Discretionary |
| Aug 2, 2024 | UMBF | $2.1K | Sale | 23 | $93.10 | Discretionary |
| Aug 2, 2024 | UMBF | $1.3M | Option Exercise | 17,849 | $75.25 | Discretionary |
| Aug 2, 2024 | UMBF | $6.6K | Sale | 71 | $93.00 | Discretionary |
| Aug 2, 2024 | UMBF | $4.1K | Sale | 44 | $93.20 | Discretionary |
| Aug 2, 2024 | UMBF | $10.2K | Sale | 109 | $93.19 | Discretionary |
| Aug 2, 2024 | UMBF | $20.5K | Sale | 220 | $93.18 | Discretionary |
| Aug 2, 2024 | UMBF | $4.0K | Sale | 43 | $93.17 | Discretionary |
| Aug 2, 2024 | UMBF | $10.2K | Sale | 109 | $93.16 | Discretionary |
| Aug 2, 2024 | UMBF | $3.7K | Sale | 40 | $93.15 | Discretionary |
| Aug 2, 2024 | UMBF | $47.4K | Sale | 509 | $93.14 | Discretionary |