East Wisconsin Savings Bank, operating through holding company EWSB Bancorp, is a small community savings bank headquartered in Kaukauna, Wisconsin, with four branch offices in Outagamie County. Founded in 1887, the Bank takes deposits from local residents and businesses and deploys those funds primarily into residential mortgage loans and consumer loans. One- to four-family residential mortgage loans make up 68% of total loans, with marine and recreational vehicle loans (sourced through a broker) making up another 16%. Other products include home equity loans, construction loans, and smaller commercial and consumer loans. The Bank earns money by capturing the spread between deposit costs and loan and investment yields. Deposits are primarily certificates of deposit, which carry higher costs than checking or savings accounts. The Bank sells most long-term fixed-rate mortgages into the secondary market on a servicing-retained basis, earning upfront gain-on-sale revenue and ongoing servicing fees, while retaining adjustable-rate and shorter-duration loans to manage interest rate risk. The Bank completed a conversion from a mutual holding company to a stock holding company in September 2024, raising roughly $7.5M in gross proceeds through its IPO. The Bank currently operates under a confidential memorandum of understanding with the FDIC and Wisconsin Department of Financial Institutions, which restricts dividend payments and requires improvements to capital, liquidity, and interest rate risk management.