Infineon Expects Weak Start into Fiscal Year 2013 and Will Define Measures to Improve Profitability

Neubiberg, Germany – September 25, 2012 – Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) today announces preliminary financial data for revenue and Segment Result Margin of the fourth quarter of the fiscal year 2012 and for the outlook of the first quarter of the fiscal year 2013. Infineon expects the revenue of the fourth quarter of fiscal year 2012 to be slightly down compared to the third quarter with a Segment Result Margin close to 12 percent of revenue. These results lead to the low end of the outlook provided on July 31, 2012. For the first quarter of fiscal year 2013 Infineon expects a revenue decline of up to ten percent relative to the fourth quarter of the 2012 fiscal year and a Segment Result Margin between five and seven percent of sales. In light of current margin levels, the management board will define and implement measures to improve profitability beyond the first quarter of the 2013 fiscal year. Infineon will announce further details regarding such measures, its reported financials and its outlook for the 2013 fiscal year during its Annual Press Conference on November 14, 2012. D I S C L A I M E R This press release contains forward-looking statements about the business, financial condition and earnings performance of the Infineon Group. These statements are based on assumptions and projections resting upon currently available information and present estimates. They are subject to a multitude of uncertainties and risks. Actual business development may therefore differ materially from what has been expected. Beyond disclosure requirements stipulated by law, Infineon does not undertake any obligation to update forward-looking statements.

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 2011 fiscal year (ending September 30), the company reported sales of Euro 4.0 billion with close to 26,000 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). Further information is available at www.infineon.com.