| 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 | 30 Jul 2025 | 0001244276 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTFC | Common Stock | Sale | $1,965,321 | -14,942 | -7.6% | $131.53 | 182,208 | 29 Jul 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | The price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $131.29 to $132.00, inclusive. The reporting person undertakes to provide to the SEC, the issuer and any security holder full information regarding the number of shares and the prices at which the shares were sold. |