Michelle Lemmons-Poscente is the Chairman of iSB Global, LLC. She is also founder and Chairman of its flagship company, International Speakers Bureau, a full-service speaker's agency headquartered in Dallas. Michelle majored in Communications at Southern Methodist University before relocating to Hollywood to work in the film and television industry on programs such as Lifestyles of the Rich and Famous and Star Search. In 1993 she founded International Speakers Bureau on the cutting-edge of the growing speaking industry, and has never looked back.

Michelle has held numerous international board positions including Vice Presidents of Education for Young Entrepreneurs' Organization (YEO) as well as seats on International Association of Speakers Bureaus, Young President's Organization (YPO), TACA Board a Dallas arts fund-raising organization, The SMU Doak Walker Sports Lecture Series, and Meeting Planners International (MPI) as a Charter member.