| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Petersen Paula S | Senior Vice President | 1000 WALNUT ST., KANSAS CITY | /s/ Paul A. Steiner for Paula S. Petersen | 05 Feb 2026 | 0001678319 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CBSH | Common Stock | Award | $0 | +2,799 | +6.9% | $0.000000 | 43,292 | 03 Feb 2026 | Direct | |
| holding | CBSH | Common Stock | 4,932 | 03 Feb 2026 | 401(k) |