Semitool to Present at the Seventh Annual Needham Growth Conference

    Business Editors/Technology Editors
    7th Annual Needham Growth Conference

    KALISPELL, Mont.--(BUSINESS WIRE)--Jan. 5, 2005--Semitool, Inc. (NASDAQ:SMTL), a manufacturer of wafer processing technology and equipment for the integrated circuit industry, announced today that it will be presenting at the Seventh Annual Needham Growth Conference at the New York Palace Hotel in New York, NY on January 12, 2005 at 1:30 p.m. ET. Speaking from management will be Tim Dodkin, executive vice president, and Larry Viano, chief financial officer.
    The presentation will be webcast live on Semitool's website at www.semitool.com. A replay of the presentation will be available for a period of 90 days.

    About Semitool, Inc.

    Semitool designs, manufactures and supports highly engineered, multi-chamber single-wafer and batch wet chemical processing equipment used in the fabrication of semiconductor devices. The company's primary suites of equipment include electrochemical deposition systems for electroplating copper, gold, solder and other metals; surface preparation systems for cleaning, stripping and etching silicon wafers; and wafer transport container cleaning systems. The company's equipment is used in semiconductor fabrication front-end and back-end processes, including wafer level packaging.
    Headquartered in Kalispell, Montana, Semitool maintains sales and support centers in the United States, Europe and Asia. The company's stock trades on the Nasdaq National Market under the symbol SMTL. For more information, please visit the company's website at www.semitool.com.

    Semitool is a registered trademark of Semitool, Inc.

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CONTACT: Semitool, Inc. Larry Viano, 406-752-2107 lviano@semitool.com or Lippert/Heilshorn & Associates, Inc. Moriah Shilton, 415-433-3777 ir@semitool.com

KEYWORD: MONTANA NEW YORK TRACK INDUSTRY KEYWORD: HARDWARE COMPUTERS/ELECTRONICS MANUFACTURING TRADESHOW CONFERENCE CALLS SOURCE: Semitool, Inc.

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