| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Hahnfeld Jeffrey D | EVP-CONTROLLER & CHIEF ACC OFF | 9700 WEST HIGGINS ROAD, 8TH FLOOR, ROSEMONT | /s/Kathleen M. Boege, Attorney-in-fact | 29 Jan 2026 | 0001977046 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTFC | Common Stock | Sale | $45,665 | -314 | -14% | $145.43 | 1,947 | 27 Jan 2026 | Direct |