- Lesley Bielby joined DiMassimo Goldstein as chief strategy officer. Most recently, Bielby was North American Head of strategic planning at Digitas and chief strategy officer at Hill Holliday. In addition, Tom Christmann joins the agency as chief creative officer, marking the first time that Mark DiMassimo will not hold that title. DiMassimo will still remain the agency's creative leader, guiding the creative direction of the agency and its client work.