Notice on Details of Stock Options (New Share Acquisition Rights) to be Allocated

Listed Stock Name:Eisai Co., Ltd.
President & CEO:Mr. Haruo Naito
Headquarters:4-6-10 Koishikawa, Bunkyo-ku, Tokyo
Securities Code:4523
Listed Locations:First Sections of the Tokyo Stock Exchange
& the Osaka Securities Exchange
Inquiries:Mr. Akira Fujiyoshi
Vice President
Corporate Communications,
Investors Relations
Phone: +81-3-3817-5120

Notice on Details of Stock Options (New Share Acquisition Rights) to be Allocated

Eisai Co., Ltd. (the “Company”) hereby announces that the details of Stock Options to be allocated to Directors, Executive Officers and employees of the Company in accordance with the resolution of the Board of Directors' Meeting (see Ⅲ. below) held on June 22, 2007 have been determined as follows:

Ⅰ. Eisai Co., Ltd. Stock Options No. 6-1. (Directors and Executive Officers)

  1. Allocation Date of Stock Options:
    July 9, 2007

  2. Number of Stock Options to be issued:
    1,680 units

  3. Recipients of the allocation and the number of Stock Options allocated:
    10 Directors - 400 units in total
    24 Executive Officers - 1,280 units in total

  4. Type and the number of shares to be issued or transferred upon exercise of Stock Options:
    168,000 ordinary shares of the Company
    (The number of shares to be issued upon exercise of one Stock Option is 100.)

  5. Amounts to be contributed upon exercise of Stock Options:
    Amount contributed for each ordinary share

    of the Company (Exercise Price): ¥5,480

    Amount contributed for each Stock Option: ¥548,000

    (Exercise Price is the closing price on the Allocation Date of July 9, 2007.)

Ⅱ. Eisai Co., Ltd. Stock Options No.6-2. (Employees)

  1. Allocation Date of Stock Options:
    July 9, 2007

  2. Number of Stock Options to be issued:
    960 units

  3. Recipients of the allocation and the number of Stock Options allocated:
    32 Employees - 960 units in total

  4. Type and the number of shares to be issued or transferred upon exercise of Stock Options:
    96,000 ordinary shares of the Company
    (The number of shares to be issued upon exercise of one Stock Option is 100.)

  5. Amounts to be contributed upon exercise of Stock Options:
    Amount contributed for each ordinary share

    of the Company (Exercise Price): ¥5,480

    Amount contributed for each Stock Option: ¥548,000

    (Exercise Price is the closing price on the Allocation Date of July 9, 2007.)

Ⅲ. Contents of the Resolution of the Board of Directors on June 22, 2007

  1. Based on the resolution of the Compensation Committee Meeting on June 21, 2007 and Article 240, Paragraph 1 and Article 238, Paragraph 2 of the Corporate Law, the Company shall issue “Eisai Co., Ltd. Stock Options No. 6-1” on July 9, 2007, as compensation to Directors and Executive Officers, in accordance with Article 238, Paragraph 1 of the Corporate Law.

  2. Based on the resolution approved at the 95th General Meeting of Shareholders held on June 22, 2007 and Article 238 Paragraph 2 and Article 239 Paragraph 1 Part 1 and 2 of the Corporate Law, the Company shall issue “Eisai Co., Ltd. Stock Options No. 6-2” on July 9, 2007, in accordance with Article 238, Paragraph 1 of the Corporate Law to give an incentive to its employees to further increase the value of the Company.

(End of document)