FOR IMMEDIATE RELEASE February 22, 2005 ADVANTEST CORPORATION (Toshio Maruyama, President and COO) (Stock Code Number: 6857, TSE first section) (Ticker Symbol: ATE, NYSE) CONTACT: Yuichi Kurita (Executive Officer, Finance) Phone: +81-(0)3-3214-7500 Notice of the Results of Repurchase of Shares through ToSTNeT-2 We, Advantest Corporation, hereby inform you that the repurchase of shares that we announced yesterday (February 21, 2005) has been completed as stated below. Furthermore, by this repurchase, we have concluded the repurchase of shares based on the decision made at the meeting of the Board of Directors held on February 21, 2005. 1. Purpose of Repurchase: To enable swift implementation of its capital policies in response to changes in business conditions. 2. Type of Shares Repurchased: Advantest Common Stock 3. Aggregate Number of Shares Repurchased: 6,000,000 shares 4. Purchase Price of Each Share JPY 9,080 5. Repurchase Date February 22, 2005 6. Method of Repurchase: Purchase through Tokyo Stock Exchange's ToSTNeT-2 (closing price orders) (Reference): Method of repurchase as announced on February 21, 2005 Type of Shares to be Repurchased: Advantest Common Stock Aggregate Number of Shares to be Repurchased: 6,000,000 Total Purchase Price: JPY 54,480,000,000 1