Heartland Financial USA and its flagship bank, Dubuque Bank and Trust (DB&T), have named Lynn “Tut” Fuller to succeed the retiring Douglas J. Horstmann as president and CEO of DB&T as well as Heartland’s EVP of Lending.

Horstmann plans to retire effective June 30, 2017.

Fuller presently serves as market president for Dubuque Bank and Trust. As president and CEO, Fuller will lead DB&T in its ongoing efforts toward profitable growth while continuously enhancing service to its valued clients. Prior to joining DB&T and Heartland, Fuller worked for Bain & Company in Chicago as a team leader and consultant.

Horstmann began his career with the Iowa Division of Banking, serving as a bank examiner for five years. In 1980, he joined Dubuque Bank and Trust as a commercial lender and impressed bank management with his sound judgment and business acumen. He steadily ascended within the organization and was appointed as president and CEO of the bank in 2004, a position he has held since.

Horstmann said, “It has been an exciting and personally rewarding career at DB&T and Heartland. I consider it an honor to have participated in the growth of both organizations. Having served all these years with Lynn ‘Butch’ Fuller, and others too numerous to name, has been fun and exciting. I will miss working directly with so many longtime clients of the bank, but look forward to staying connected by continuing to serve on the bank’s board of directors.”

Fuller said, “When Doug joined DB&T in 1980, the bank had assets of $175 million. Today, with assets of $1.5 billion, DB&T is Heartland’s largest community bank and enjoys a solid reputation throughout the region as a valued partner for businesses of all sizes, industries and individual customers. During Doug’s tenure, the bank experienced a significant increase in market share and nearly doubled its deposit base.”