Lam Research Corporation Appoints Ferdinand Seemann as Vice President of North America Field Operations
January 18, 2002

Lam Research Corporation Appoints Ferdinand Seemann as Vice President of North America Field Operations FREMONT, Calif., January 18, 2002—Lam Research Corporation (Nasdaq: LRCX) today announced the appointment of Ferdinand Seemann as vice president of North America field operations. In this position, Seemann will oversee Lam's field operations in North America, including sales, marketing, and service. Previously, he directed the global sales and services organization for Mattson Technologies. He reports to Steve Lindsay, vice president of global field operations and corporate marketing.

In addition to managing global field services at Mattson, Seemann also managed merger and acquisition activities. Seemann has more than 15 years of executive and technical experience in the semiconductor industry.

"We are extremely pleased that Ferdinand has joined the Lam executive team. His extensive growth management experience and understanding of customer needs should prove invaluable as we position for the next upturn," said Lindsay.

This press release contains certain forward-looking statements which are subject to the Safe Harbor provisions created by the Private Securities Litigation Reform Act of 1995. Such forward-looking statements include those relating to the projection of future market conditions, growth expectations and economic trends. Such statements are based on current expectations and are subject to risks, uncertainties, and changes in condition, significance, value and effect including those risks detailed in documents filed with the Securities and Exchange Commission, and specifically the report on Form 10-K for the fiscal year ended June 24, 2001 and the Form 10-Q for the quarter ended September 23, 2001, which could cause actual results to vary from expectations. The company undertakes no obligation to update the information in this Press Release.

Lam Research Corporation is a leading supplier of wafer fabrication equipment and services to the world's semiconductor industry. Lam's common stock trades on the Nasdaq National Market under the symbol LRCX. The Company's World Wide Web address is