MILPITAS, Calif. (July 19, 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 a conference call to review its fourth quarter and full fiscal year 2010 operating results on Thursday, July 29, 2010 at 2:00 p.m. Pacific Daylight Time.

The live webcast will be available on the Investor Relations page of KLA-Tencor's website at http://ir.kla-tencor.com, and a replay of the webcast will remain available on KLA-Tencor’s Investor Relations web page for twelve months following the conference call.

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, LED, 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 more than 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)