Power of Attorney for Laura A. Kohl at Wintrust Financial Corporation

Laura A. Kohl, a director at Wintrust Financial Corporation, has executed a Power of Attorney document. This document appoints Timothy S. Crane, David A. Dykstra, and Kathleen M. Boege as her attorneys-in-fact. These attorneys are authorized to execute and file Forms 3, 4, and 5 on her behalf in compliance with Section 16(a) of the Securities Exchange Act of 1934. The Power of Attorney grants these attorneys the authority to perform any necessary actions related to these filings, including completing and executing the forms and filing them with the SEC and any relevant stock exchanges. The document remains in effect until Kohl is no longer required to file these forms, unless revoked earlier in writing.