Sandra Diaz

Sandra Diaz

Sandra joins Capstone as a Vice President, supporting Capstone’s CEO, David Barrosse. She comes to Capstone from a global law firm, where she supported an International Arbitration practice, the Chief Innovation Officer to the firm and a Congressional Investigations...
Chris DeFeo

Chris DeFeo

Chris joined Capstone in 2025 as a Vice President on the Private Equity Business Development team. He works closely with private equity investors and their portfolio companies in the financial and business services sector to navigate transaction-related risks and...
Murphy Costigan

Murphy Costigan

Murphy joined Capstone in 2025 and is a Vice President of Corporate Development. He collaborates with corporations across the energy sector, providing market insights and advising on policy and regulatory trends to leverage potential investment opportunities. Before...
Joe Clancy

Joe Clancy

Joe joined Capstone in 2025 and is a Vice President on the Financial Services team. Prior to joining Capstone, Joe was a Senior Manager at American Express, where he developed product strategy and research for US card and lending products. Previously, he led...
Jack Buckley

Jack Buckley

Jack is a Vice President on Capstone’s Energy team. He advises clients on policy issues including pipeline development, transmission buildout, and related infrastructure topics. He also follows market developments in CAISO and the Western Interconnection,...