Personal BoD Conversion Book and Disclosure Packet

Commitment to Customers and Communities

Commitment to Customers and Communities

To take care of our customers and those who should be: That has been themission of MidWest One Bank since 1934 when family-owned Iowa State Bank & Trust Company was formed during the Great Depression in Iowa City. In the decades to follow, Iowa State Bank & Trust worked tomeet customer needs through sound banking practices, conscientious employment, and philanthropic endeavors. In 2008, two additional Iowa family-owned banks joined Iowa State Bank to become MidWest One Bank. Today, Bank of Denver shares the same values that have been the hallmark of community banking at MidWest One Bank, and together we will continue to operate with these same principles inmind. complementary match. Our professionals are focused on ethical banking services, and on reinvesting our resources in the communities in which we do business. In 2022, MidWest One returnedmore than $800,000 to our communities in charitable contributions and provided hundreds of hours of volunteerism fromour community-minded employees. Our employees remain our greatest strength. In 2022, for the tenth consecutive year, MidWest One’s Iowa franchise was recognized as a “best workplace” by the Des Moines Register. Only 150 Iowa businesses receive this designation, which is awarded after an anonymous survey of our employees. Our financial services professionals are excited to expand our operations in Colorado with enhanced services, a larger set of solutions, and a deeper team of banking experts. An expanded branch network, increased lending and deposit capacities, more digital options, and a larger wealthmanagement teamare examples of the value our combined companies will provide our customers and communities. We will be a larger company but continue our community banking values—investing in our customers, employees, and communities. 21 The community-banking values MidWest One shares with Bank of Denver make this merger a

MidWestOne Financial Group, Inc. is a strong, stable, publicly traded community bank holding company traded on NASDAQ under the symbol MOFG.