| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| DYKSTRA DAVID A | VICE CHAIRMAN AND COO | 9700 WEST HIGGINS ROAD, 8TH FLOOR, ROSEMONT | /s/Kathleen M. Boege, Attorney-in-fact | 2025-11-24 | 0001244276 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTFC | Common Stock | Award | $21K | +164 | +0.09% | $127.91 | 183K | Nov 20, 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Dividends awarded in shares pursuant to the terms of previously granted restricted stock units. |