Mammoth Energy Services, Inc. (NASDAQ:TUSK – Get Free Report) CEO Arty Straehla sold 25,000 shares of Mammoth Energy Services stock in a transaction dated Wednesday, December 13th. The stock was sold at an average price of $4.39, for a total transaction of $109,750.00. Following the sale, the chief executive officer now directly owns 1,177,107 shares […]