The added space comes despite an expected one-third reduction from the 3,000 employees Motorola Mobility last summer announced would be moving to Chicago. It is now expected to move about 2,000 workers to the Mart following rounds of layoffs made by Google. Kyle Kamin and Cal Wessman, executive vice presidents at Los Angeles-based CBRE Inc., represented the tenant in the lease expansion. The building's owner, New York-based Vornado Realty Trust, was represented by John Dempsey, a senior vice president at CBRE.