Q4 FY 2011 Total Segment Result of Euro 195 million and flat sales complete the record 2011 fiscal year

Quarterly sales of Euro 1.038 billion almost flat sequentially; Total Segment Result margin of 18.8 percent 2011 fiscal year: 21 percent sales growth to Euro 4.0 billion at 19.7 percent Total Segment Result margin with Group net income in excess of Euro 1 billion mark all-time highs for the current portfolio. Euro 308 million of cash returned to the capital markets, diluted share count reduced by circa 2.5 percent Outlook for the first quarter of the 2012 fiscal year: sales to decline about ten percent; Total Segment Result margin to be 13 to 14 percent FY 2012 outlook: Revenue expected to be down a mid single digit percentage versus the 2011 fiscal year with a low to mid teens percentage for Total Segment Result margin Neubiberg, Germany – November 16, 2011 – Infineon Technologies AG today reported results for the fourth quarter as well as the whole 2011 fiscal year, ended September 30, 2011. Full version of this news release (incl. financial data)

About Infineon Infineon Technologies AG, Neubiberg, Germany, offers semiconductor and system solutions addressing three central challenges to modern society: energy efficiency, mobility, and security. In the 2010 fiscal year (ending September 30), the Company reported sales of Euro 3,295 million with approximately 26,650¹ employees worldwide. Infineon is listed on the Frankfurt Stock Exchange (ticker symbol: IFX) and in the USA on the over-the-counter market OTCQX International Premier (ticker symbol: IFNNY). ¹ Mentioned number of employees contains about 3,075 employees of the Wireless mobile phone business (Wireless Solutions), which was sold to Intel Corporation.