For Immediate Release

Company name: DAIICHI SANKYO COMPANY, LIMITED
Representative: Takashi Shoda, President and Representative Director
(Code no.: 4568, First Section, Tokyo, Osaka and Nagoya Stock Exchanges)
Please address inquiries to Toshiaki Sai, General Manager,
Corporate Communications Department
Telephone: +81-3-6225-1126
http://www.daiichisankyo.com/

DAIICHI SANKYO Announces Cancellation of Treasury Stocks

Tokyo, August 29, 2008 - DAIICHI SANKYO COMPANY, LIMITED has announced today that its Board of Directors reached a decision to cancel the Company's treasury stocks, pursuant to Article 178 of the Japanese Corporate Law.

Details of the Cancellation
1. The class of shares to be cancelled is common stock.
2. Number of shares to be cancelled is 26 million shares, corresponding to 3.54% of common shares issued prior to cancellation.
3. The shares will be cancelled on September 8, 2008.

(Reference)
1. The Company will have 709,011,343 issued shares following the cancellation.
2. Total number of the Company's treasury stocks after cancellation will be5,054,802.

(Estimated numbers of shares described above in reference 1 and 2 were calculated based on the Company's shares as of July 31, 2008, respectively.)