Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH – Get Free Report) Director Floyd F. Petersen sold 3,000 shares of Amphastar Pharmaceuticals stock in a transaction dated Monday, June 10th. The stock was sold at an average price of $41.40, for a total value of $124,200.00. Following the completion of the sale, the director now directly owns 78,409 shares […]