AMI Semiconductor Files Initial Public Offering Registration Statement

POCATELLO, Idaho--Aug. 1, 20035, 2003--AMIS Holdings, Inc., parent company of AMI Semiconductor, Inc. (AMIS), announced today that it has filed a registration statement with the Securities and Exchange Commission (SEC) for the proposed initial public offering of its common stock. Credit Suisse First Boston, Goldman, Sachs & Co. and Lehman Brothers will be the managing underwriters for the proposed offering.

AMIS is a leader in the design and manufacture of customer specific integrated mixed signal semiconductor products. AMIS focuses on the automotive, medical and industrial markets, which have many products with significant real world, or analog, interface requirements.

A registration statement relating to these securities has been filed with the SEC but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

Copies of the prospectus, when available, can be obtained from Credit Suisse First Boston's Prospectus Department by calling 212-325-2580 at 11 Madison Avenue, New York, NY 10010 and Goldman, Sachs & Co. at 85 Broad Street, New York, NY 10004, 212-902-1000.