Lam Announces Date for Releasing March Quarter Financial Results
March 28, 2005

FREMONT, Calif., March 28, 2005--Lam Research Corporation (Nasdaq: LRCX), Fremont, Calif., today announced it will release the March 2005 quarter financial results on Wednesday, April 13, 2005. Management's quarterly company update will be held on April 13, beginning at 2:00 p.m. Pacific Time.

Attend by Telephone

Dial 303/262-2193 approximately 10 minutes prior to the start of the meeting and an operator will connect you to the conference call.

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Replay Information

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Contact Information

Contact the Lam Investor Relations Department by email at or by telephone at 510/572-2106 with questions.

The date and time are subject to change. Please visit the Investors section of Lam's web site and select the Calendar/Webcasts button to view the latest presentation schedule, or select the Email Alerts button and register your email address to receive automated notifications of upcoming webcasts, news releases, and SEC filings.

Lam Research Corporation is a major 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

Lam Research Corporation Contact:
Julie Cimino, Investor Relations, phone: 510/572-1615, e-mail: