Mammoth Energy Services, Inc. (NASDAQ:TUSK – Get Free Report) CEO Arty Straehla sold 30,000 shares of Mammoth Energy Services stock in a transaction dated Monday, December 18th. The stock was sold at an average price of $4.38, for a total value of $131,400.00. Following the sale, the chief executive officer now directly owns 1,052,107 shares […]