Ag Express Electronics, a Des Moines-based agricultural electronics provider, announced that Derek Stocking has joined the company as its chief financial officer. Stocking most recently served as CFO at Diamond Oil Co. and previously held the CFO role at Library Binding Service. He holds an MBA in finance from the University of Iowa Tippie College of Business and a bachelor’s degree in finance and economics from Drake University. “Derek brings a wealth of experience and a proven track record of success. His drive and industry knowledge will be a tremendous asset as we continue to shape our future success,” Eric Randolph, interim CEO of Ag Express Electronics, said in a prepared statement.