WINTRUST FINANCIAL CORPORATION (an Illinois corporation) 10,000,000 Depositary Shares, Each Representing a 1/1000th Interest in a Share of 6.875% Fixed Rate Reset Non-Cumulative Perpetual Preferred Stock, Series E UNDERWRITING AGREEMENTUnderwriting Agreement • May 8th, 2020 • Wintrust Financial Corp • State commercial banks • New York
