MILPITAS, Calif., February 12, 2010 —KLA-Tencor Corporation (NASDAQ: KLAC), the world’s leading supplier of process control and yield management solutions for the semiconductor and related industries, today announced that the company will provide a live audio webcast of its investor presentation at the 2010 Goldman Sachs Technology and Internet Conference on February 23, 2010 at 2:00 pm (PDT) in San Francisco, California.

The live webcast will be available on the Investor Relations page of KLA-Tencor’s web site at http://ir.kla-tencor.com/, and a replay of the webcast will be available on KLA-Tencor’s Investor Relations page following the conference presentation.

About KLA-Tencor:
KLA-Tencor Corporation, a leading provider of process control and yield management solutions, partners with customers around the world to develop state-of-the-art inspection and metrology technologies. These technologies serve the semiconductor, data storage, compound semiconductor, photovoltaic, and other related nanoelectronics industries. With a portfolio of industry-standard products and a team of world-class engineers and scientists, the company has created superior solutions for its customers for over 30 years. Headquartered in Milpitas, California, KLA-Tencor has dedicated customer operations and service centers around the world. Additional information may be found at www.kla-tencor.com. (KLAC-F)

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