TEMPE, Ariz.--(BUSINESS WIRE)--Amkor Technology, Inc. (NASDAQ: AMKR), a leading provider of semiconductor packaging and test services, today announced financial results for the fourth quarter and full year ended December 31, 2014. “We delivered a strong finish to the year with fourth quarter operating results well above the high end of our guidance," said Steve Kelley, Amkor's president and chief executive officer. "Driven by notable strength in mobile communications using our advanced packagin