Ann G. Fox, 43, joined the board of directors in June 2019. She is president, chief executive officer and a board member of Nine Energy Service, Inc. (Nine), a Houston-based oilfield services company. Fox joined Nine in 2013 and previously served as chief financial officer and vice president of strategic development. Prior to joining Nine, she worked for SCF Partners, a private-equity firm supporting the oilfield services and equipment industries. Fox also has experience as an investment banking analyst and as a Marine, where she served several tours of duty in Iraq on a team that reported directly to Gen. David Petraeus. She received a bachelor’s degree in diplomacy and security in world affairs from Georgetown University and a master’s in business administration from Harvard University.