Mr. Sanger is a Founder and Managing Partner of Siltstone Capital. Prior to founding Siltstone, Mr. Sanger worked for nine years at Riverstone Holdings (“Riverstone”), a premier energy and power-focused private equity firm. At Riverstone, Mr. Sanger served on the Boards of Directors of seven energy companies spanning the sub-sectors of Exploration & Production (“E&P”), Energy Services, Midstream, Power, and Renewables.