Leviton has announced the appointment of William Marshall to the position of senior vice president of sales and marketing, Daryoush Larizadeh to senior vice president of the company, and Matthew Silverman to training manager for its integrated networks and controls and residential lighting control products; Tim Lesch has been named vice president of sales for Osram Sylvania's consumer products channel, Mark Corcoran will succeed Lesch as vice president of sales for the industrial commercial channel, and Dwight Kitchen has been promoted to vice president of sales for the OEM/special markets sales channel.