Midstates Petroleum CEO Crum to step down Midstates Petroleum announced that John Crum will step down from his positions as president, CEO and Chairman of the board in order to allow the company to pursue new leadership and strategic direction. His resignation will be effective March 31. Pending the identification and appointment of a new CEO, Peter Hill will serve as interim president and CEO. Hill has served as a member of the company’s board since April 2013. He has also served as the Non-Executive Chairman of Triangle Petroleum since February 2013 and as a Director of Triangle since December 2009.