Atheros Communications Announces Proposed Initial Public Stock Offering

SUNNYVALE, Calif., December 2, 2003 – Atheros Communications, Inc. announced today that it has filed with the Securities and Exchange Commission a registration statement relating to the proposed initial public offering of shares of its common stock.  The filing provides for an offering of up to $100 million of common stock.  All of the shares will be sold by the Company.  The shares will be offered by an underwriting group managed by sole bookrunner Morgan Stanley & Co. Incorporated, with co-lead manager Lehman Brothers Inc. and co-managers Banc of America Securities LLC and Thomas Weisel Partners LLC.

Atheros Communications develops semiconductor solutions for secure wireless local area networks. Atheros’ technology is incorporated into products provided by many wireless equipment manufacturers.

A preliminary prospectus relating to these securities is not currently available.  When available, a preliminary prospectus may be obtained from Morgan Stanley & Co. Incorporated, 1585 Broadway, New York, NY 10036, Attn: Prospectus Department.

A registration statement relating to these securities has been filed with the 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 in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such State.

Contact Information: Deborah Stapleton, Stapleton Communications
650-470-0200