Ambac Financial Group, Inc. announced that R. Sharon Smith has joined Ambac as Senior Managing Director, Chief of Staff and a member of the Executive Management team. Ms. Smith will report directly to Claude LeBlanc, Ambac's President and Chief Executive Officer. Ms. Smith joins Ambac from Syncora Guarantee Inc. where she served in numerous capacities during her tenure, including as Associate General Counsel and Head of Investor Relations. Ms. Smith was also General Counsel and Chief Compliance Officer for Camberlink LLC.