First Federal Bank of Wisconsin plans to purchase Mitchell Bank. FFBW Inc., is the Brookfield-based parent company of First Federal. In an announcement this week, the bank said it entered an agreement to buy in cash the assets and assume the liabilities of Mitchell Bank. The purchase price is expected to range from $4.7 million to $4.9 million, a regulatory filing shows. According to the announcement, First Federal will take over about $44 million in customer deposits and $17 million in loans from Milwaukee-based Mitchell. As of March 31, First Federal held $278 million in total assets.