Exclusive: US shale producer Gulfport Energy to name Dell'Osso as CEO, sources say | ReutersExclusive news, data and analytics for financial market professionalsLearn more aboutRefinitivCompaniesFollowFollowNEW YORK, May 5 (Reuters) - Gulfport Energy(GPOR.N), opens new tab is poised to name Domenic Dell'Osso as the next chief executive of the U.S. natural gas-focused producer, people familiar with the matter said on Tuesday.The appointment of Dell'Osso, who served as CEO of larger rival Expand Energy(EXE.O) ...