Sam Mar

Vice President, Arnold Ventures


Sam Mar is Vice President at Arnold Ventures where he leads advocacy and grant-making across a wide array of issues, including climate and clean energy. Before the formation of Arnold Ventures, Sam was the CEO of Action Now Initiative, a political advocacy organization founded by Laura and John Arnold. Prior to entering the field of philanthropy, Sam held various positions globally in enterprise technology consulting, banking, asset management, private equity, and product innovation. Sam is a member of the advisory committee for the Nuclear Innovation Alliance.


B.A. in Business from the University of Texas, MBA from IE Business School

Area of Expertise

Public Policy, Strategy, Political Advocacy, Bourbon