| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| ZIDAR THOMAS P | CHAIRMAN SR MKT HD WEALTH -MTG | 9700 WEST HIGGINS ROAD, 8TH FLOOR, ROSEMONT | /s/Kathleen M. Boege, Attorney-in-fact | 28 Jan 2026 | 0001365691 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTFC | Common Stock | Tax liability | $107,457 | -735 | -1.4% | $146.20 | 53,405 | 26 Jan 2026 | Direct | |
| holding | WTFC | Common Stock | 9,366 | 26 Jan 2026 | By ESPP |