AMI Semiconductor to Announce First Quarter 2005 Results on April 28

    Business Editors/Technology Editors

    POCATELLO, Idaho--(BUSINESS WIRE)--April 14, 2005--AMIS Holdings, Inc. (Nasdaq:AMIS), parent company of AMI Semiconductor, will release its financial results for the first quarter ending April 2, 2005, on Thursday, April 28, after the market closes.
    The earnings release will be available on AMI Semiconductor's Web site at: www.amis.com/investor_relations/.
    President and Chief Executive Officer Christine King and Chief Financial Officer David Henry will discuss the Company's earnings and operations via a conference call and live audio webcast at 5:00 p.m. ET.
    Investors and other interested parties may listen to the conference call via the live audio webcast by visiting the investor relations section of the AMIS Web site at www.amis.com. A webcast replay will be available on the Company's Web site until close of business Thursday, May 12, 2005.

    About AMI Semiconductor

    AMI Semiconductor (Nasdaq:AMIS) is a leader in the design and manufacture of silicon solutions for the real world. As a widely recognized innovator in state-of-the-art integrated mixed-signal semiconductor products, mixed-signal foundry services and structured digital products, AMIS is committed to providing customers in the automotive, medical and industrial markets with optimal value, quick time-to-market semiconductor solutions. Offering unparalleled manufacturing flexibility and dedication to customer service, AMI Semiconductor operates globally with headquarters in Pocatello, Idaho, European corporate offices in Oudenaarde, Belgium, and a network of sales and design centers located in the key markets of the North America, Europe and the Asia Pacific region.

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CONTACT: AMI Semiconductor, Inc., Pocatello Stephen Blake, 208-234-6077 stephen_blake@amis.com or Tamera Drake, 208-234-6890 tamera_drake@amis.com

KEYWORD: IDAHO BELGIUM INTERNATIONAL EUROPE INDUSTRY KEYWORD: HARDWARE SOFTWARE NETWORKING EARNINGS CONFERENCE CALLS SOURCE: AMIS Holdings, Inc.

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