Cornelis Hendrik (Cees) de Witte stopped working on May 1 as chief executive of X-Bionic, the Swiss developer of high-tech sportswear and socks, after nine months in the post. The reasons for his departure and the new management structure could not be determined at the time of going to press. De Witte had taken the place of the company's founder and owner, Bodo Lambertz, who became chairman this January. The latter's son, Patrick Lambertz, who was overseeing all the administrative functions, had been concentrating lately on product development and marketing. De Witte had previously worked since 2002 for Spyder Action Sports, handling first its development in Europe and then its global sales. Aside from a few years at its U.S. head office, he was stationed for the most part in Switzerland. Prior to Spyder, he ran the European operations of Giro, Easton-Bell Sports and GT Bicycles.