Paul Janssen, the former general manager of Hugo Boss's shoe division who has been responsible lately on Sioux executive board for the development of the German company's collections, will be leaving the company after the expiration of his three-year contract at the end of June. Another former member of the executive board, Stephan Krug, left the company a year ago, which was taken over by an investment firm in 2010. Meanwhile, Holger Lang joined the executive board of Sioux on June 1. He will be responsible for the brand's sales in the domestic German market as well as for trade marketing and retail concepts. He will also get involved in the development of the brand's collections. Previously, the 46-years old Lang worked for twelve years for Panama Jack as sales manager for the German, Austrian and Swiss markets. Lately, he worked for eight years at Bugatti Shoes, where he managed the worldwide distribution of the brand. In order to support its team of designers, Sioux will be recruiting two additional employees for the development of its men's shoe collections.