| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| ZIDAR THOMAS P | CHAIRMAN SR MKT HD WEALTH -MTG | 9700 WEST HIGGINS ROAD, 8TH FLOOR, ROSEMONT | /s/David A. Dykstra, Attorney-in-fact | 27 Feb 2026 | 0001365691 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTFC | Common Stock | Tax liability | $244,523 | -1,632 | -3.1% | $149.83 | 51,773 | 25 Feb 2026 | Direct | |
| holding | WTFC | Common Stock | 9,366 | 25 Feb 2026 | By ESPP |