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News Release

FOR IMMEDIATE RELEASE
May 14, 2002

Notice Concerning Acquisition of the Company's Own Shares in the Market
(Based on Japanese Commercial Law 210 Concerning Share Acquisition)

  Listed Stock Name : Eisai Co., Ltd.
  President & CEO : Mr. Haruo Naito
  Head Office Location :  4-6-10 Koishikawa Bunkyo-ku, Tokyo
  Securities Code : 4 5 2 3
  Listed Locations : First Sections of the Tokyo Stock Exchange
& the Osaka Securities Exchange
  Inquiries: Mr. Nobuo Deguchi
Corporate Officer (Vice President)
Public Relations & Legal Affairs
Phone 81-3-3817-5190
Notice Concerning Acquisition of the Company's Own Shares in the Market
(Based on Japanese Commercial Law 210 Concerning Share Acquisition)

Eisai Co. Ltd. announces that at the Board of Directors' Meeting held on May 14, 2002 a resolution was approved to propose among others to the 90th General Shareholders' Meeting on June 27, 2002 the acquisition of own shares in accordance with Japanese Commercial Law 210. Details of the proposal are noted below.

I1 . Reason for the Share Acquisition

In response to changes in the external environment and in order to increase the flexibility of capital policy, the Company proposes to acquire its own shares in the market in accordance with Commercial Law 210.

II2 . Contents of the Acquisition
  (1) Share Type Acquisition Common Stock
  (2) Number of Shares to be Acquired 10 million shares (maximum)
(3.37% of total issued shares)
  (3) Total Value of Shares to be Acquired yen30 billion (maximum)

(Note)

The above proposal concerning "Acquisition of the Company's Own Shares" is subject to approval at the General Shareholders' Meeting to be held on June 27, 2002.


(Reference)
The Law concerning Company share acquisition has been partially revised (Commercial Law 79 in 2001) namely Article 3 Section 4 has replaced the prior Section 3. At the end of March 2002, the Company acquired 4.591 million shares thereunder.