Press Release


O2Micro Announces Depositary Receipt Program

Friday November 25, 5:49 pm ET


SANTA CLARA, Calif. & GEORGE TOWN, Grand Cayman--(BUSINESS WIRE)--Nov. 25, 2005--O2Micro® International Limited (NASDAQ:OIIM - News), a leading supplier of innovative power management, and security components and systems for the Computer, Consumer, Industrial, and Communications markets, today announced the implementation of its American depositary receipt program effective November 28, 2005.

Under the ADR program, each O2Micro International American depositary receipt (ADR) represents fifty (50) ordinary shares after the fifty for one (50 for 1) share split, as described in the press release dated November 14, 2005. The symbol for the O2Micro ADRs will be "OIIMD" for the first 20 trading days, and then revert to "OIIM", according to NASDAQ Stock Market rules.


The Bank of New York's Depositary Receipt Division has been selected as the sponsor for the American depositary receipt program and the depositary for the program.


The timing of the future proposed global offering and listing on the HKSE, described in the press release dated November 14, 2005, has not been finalized. There can be no assurance that such an offering and listing will take place, and it is subject to the approval of the HKSE and the board's determination based on market conditions and other factors.


A registration statement relating to the securities proposed to be offered by the company in the U.S. has been filed with the U.S. Securities and Exchange Commission 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 or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.


The proposed global offering will be made only by means of prospectus, a copy of which may be obtained, when available, from: Gil Goodrich, O2Micro International Limited, Director of Investor Relations, Phone: 408-987-5920, Ext. 8013.


About O2Micro


Founded in April 1995, O2Micro develops and markets innovative power management, and security components and systems for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management, SmartCardBus® and Security products, such as VPN/Firewall system solutions.


O2Micro International maintains an extensive portfolio of intellectual property with 3,156 patent claims granted, and over 5,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.


O2Micro, the O2Micro logo, SmartCardBus and combinations thereof are registered trademarks of O2Micro.




Gil Goodrich, 408-987-5920 ext. 8013