Leadership team

Gary Mandelblatt

Gary is a Managing Partner at NextGen Strategic Advisors with 33 years of experience working with financial institutions in managing market, credit and operational risks, managing regulatory relations, implementing regulatory requirements, defining strategies and building businesses.  Gary was the Chief Risk Officer for Nomura Americas and Chairman of Nomura’s Global Dodd-Frank Implementation program.  Prior to Nomura, Gary was a Managing Director at the Lehman Brothers Estate where he was responsible for building the valuation capabilities for 1.2 million derivatives contracts, and hedging open risk exposures.  Prior to that, Gary was the Global Head of Fixed Income Strategy at Lehman Brothers and helped build the commodities and emerging markets businesses.  Before joining Lehman, Gary was Managing Director at Smith Barney, Salomon Smith Barney and Citigroup and was a senior Market Risk Manager for Fixed Income and supported numerous regulatory efforts.  Prior to that, Gary was a consultant with Coopers & Lybrand and First Manhattan Consulting Group.

Willem van Rijn

Willem is a Managing Partner at NextGen Strategic Advisors. Willem leads the Climate and Sustainability Finance practice for the firm. He has over 40 years of management consulting and managerial experience working with financial institutions. Willem is a senior executive and advisor with broad strategy, general management, operating and technology management and consulting experience. Willem has a proven analytical, business building and leadership track record with an emphasis on strategy formulation, financial risk management and operations management in the capital markets sector. He was a Managing Partner at PwC in New York and Tokyo and a Member of the Management Committee and Partner of Corporate Strategy at Capco. Previously he was an SVP at Bank of America. He is an international executive, having held senior management positions in the United States, Europe and Asia.

Willem’s current practice focuses on climate change, how it impacts risk and provides opportunities for financial institutions. He was the Chief Operating Officer for Greenpeace International, the global environmental organization. He is a Board Member of Ecologic Institute, Berlin, a leading think-tank on environmental matters.

Paul Gregg

Paul has wide ranging experience in major Wall Street firms, most recently working as Managing Director and COO for the Commodities and Financial Markets business at Macquarie Bank in NY, Standard Chartered Bank in Singapore and the CAO for the Lehman Commodities business in NY.  In these roles, Paul was responsible for implementing business strategies, managing operations, improving efficiencies, driving business strategic planning, implementing regulations and implementing operational risk management.  Prior to these roles, Paul worked at Citigroup and was the global coordinator of the Capital Markets Approval Committee and the Market Risk Manager for the commodities, interest rates, municipals and credit businesses.  Paul received his MBA from the NYU Stern School of Business and has a BS from Manhattan College.

Thomas Odenthal

Thomas has extensive experience designing and implementing business strategies at Investment Banks working as an external consultant and as an internal Head of Strategy.  He frequently works with clients on strategic transformations, RoE improvement initiatives and operating model changes.  Thomas was the COO, Head of APAC Markets Strategy at RBS in Hong Kong.  Before that he was at Barclays Capital and was the Head of Business Development Global Markets in Singapore and the COO of Special Projects for Fixed Income in NY.  Prior to that, Thomas was the Head of Fixed Income Business Strategy at Lehman Brothers and was a Principal in the Financial Services Practice at Booz Allen Hamilton in NY.  Thomas has an M.S. in Mathematics from Cologne University in Germany and an M.S. in Financial Engineering and a Ph.D. in Operations Research, both from Columbia University in New York City.

Mario Rautner

Mario has worked on commodity supply chains related to deforestation for more than twenty years. He has initiated and led the Forest 500 project which analyses and produces a comparative ranking of deforestation policies of the global powerbrokers of deforestation. He is also a co-founder of Trase which uses customs data to evaluate global commodity supply chains and their links to deforestation. In addition, he is the lead author of “The Little Book of Big Deforestation Drivers” which analyses catalysts aimed to reduce deforestation from key forest risk commodities. The book is used by a large number of stakeholder groups in this debate and was released at the UN Climate Conference in Warsaw. He is also the author of numerous reports for various clients related to deforestation from commodities and has extensively analysed the supply chains for soy, palm oil, beef, leather, timber and paper.