Wolfgang Illers, the long-time chief financial officer of the Wortmann Group, has announced his retirement from the firm after 26 years. Tobias Seng, who has functioned as co-CFO of the big shoe producer since April, now assumes full responsibility for the position. The Wortmann Group, based in Detmold, Germany, is known for the shoe brands Tamaris and Caprice Dr. Illers will remain active with the company through his involvement in the Wortmann Foundation.