| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| STOEHR DAVID L | CHIEF FINANCIAL OFFICER | 9700 WEST HIGGINS ROAD, 8TH FLOOR, ROSEMONT | /s/David A. Dykstra, Attorney-in-fact | 27 Feb 2026 | 0001244289 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WTFC | Common Stock | Tax liability | $360,341 | -2,405 | -13% | $149.83 | 16,233 | 25 Feb 2026 | Direct |