Power of Attorney for David S. Richter at Wintrust Financial Corporation

David S. Richter, a director of Wintrust Financial Corporation, has executed a Power of Attorney appointing Timothy S. Crane, David A. Dykstra, and Kathleen M. Boege as his attorneys-in-fact. This authorization allows them to execute and file Forms 3, 4, and 5 on his behalf in compliance with Section 16(a) of the Securities Exchange Act of 1934. The Power of Attorney also grants these attorneys the authority to perform any necessary actions related to these filings, ensuring compliance with SEC regulations. This Power of Attorney will remain in effect until Richter is no longer required to file these forms, unless revoked earlier in writing.