Samantha Dart re-joined Goldman Sachs in late 2018. She previously had stints at Noble Group and Swiss trader Mercuria Energy Group in North America. Prior to joining Noble, Sam was head of Global Gas Research at Goldman Sachs for several years, based out of New York and, later, London. Sam is originally from Brazil, but moved to the United States in 2001, where she obtained a PhD in Economics from The University of Chicago.