Mammoth Energy Services announced that the Board of Directors appointed Paul Heerwagen as a director effective immediately. Mr. Heerwagen will replace Aaron Gaydosik, who resigned from the Board effective January 4, 2017 to pursue other business opportunities. Mr. Heerwagen serves as Vice President, Corporate Development for Gulfport Energy Corporation, where he oversees corporate strategy.  Since joining Gulfport in May 2007, Mr. Heerwagen has served in multiple roles, including as the Director of Investor Relations and Corporate Affairs.  In addition, Mr. Heerwagen was involved in the formation of the Stingray entities in 2012 where he served as their President from 2012 to 2014 and oversaw their business operations.