Ambac Financial Group, Inc. announced management changes in its Portfolio Risk Management Group. Cathleen J. Matanle, in mutual agreement with Ambac, will retire from her position as Senior Managing Director and Head of Portfolio and Credit Risk Management as of September 30, 2016. Upon Ms. Matanle’s retirement, David Barranco, currently Senior Managing Director and Head of Restructuring and Corporate Development, will assume additional responsibilities for the Portfolio and Credit Risk Management Group. Mr. Barranco will continue to report directly to Nader Tavakoli, President and Chief Executive Officer.