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 Issues Unsecured Straight Bonds

TOKYO,Japan(June 17,2009)-Daiichi Sankyo Company, Limited announces that it has determined the terms of its first and second series of unsecured straight bonds (with limited inter-bond pari passu clause) as outlined below.

1.1st Series of Daiichi Sankyo Company, Limited Unsecured Straight Bonds;
 (1)Total amount of issue:
     60 billion yen
 (2)Denomination of each Bond:
     100 million yen
 (3)Transfer of Corporate Bonds, etc.:
     The provisions of the Law Concerning Book-Entry Transfer of Corporate Bonds, etc. shall apply to each Bond.
 (4)Interest rate:
     1.078% per annum
 (5)Issue price:
     100 yen per face value of 100 yen
 (6)Redemption price:
     100% of the principal amount
 (7)Maturity:5 years
     ①Maturity date:
        The principal of the Bonds shall be redeemed in a lump sum on June 24 2014.
     ②Purchase or cancel:
        The issuer may at any time purchase or cancel the Bonds from but excluding the payment date.
 (8)Interest payment dates:
     June 24 and December 24 of each year (Initial interest payment date: December 24,2009)
 (9)Offering period:
     Wednesday,June 17,2009
 (10)Payment date:
     Wednesday,June 24,2009
 (11)Method of offering:
     Public offering
 (12)Security or guarantee:
     The Bonds are not secured by any pledge, mortgage or other charge on any assets or revenues of the Company or of
     others, nor are they guaranteed. There are no assets reserved as security for the Bond.
 (13)Negative pledge:
     Applicable
 (14)Underwriters:
     Nomura Securities Co., Ltd. and Daiwa Securities SMBC Co. Ltd. shall serve as the co-lead managing underwriters for
     this syndication.
 (15)Fiscal agent:
     Mizuho Corporate Bank, Ltd.
 (16)Book-entry transfer institution:
     Japan Securities Depository Center, Inc.
 (17)Rating:
     "AA" from Rating and Investment Information, Inc.

2.2nd Series of Daiichi Sankyo Company, Limited Unsecured Straight Bonds;
 (1)Total amount of issue:
     40 billion yen
 (2)Denomination of each Bond:
     100 million yen
 (3)Transfer of Corporate Bonds, etc.:
     The provisions of the Law Concerning Book-Entry Transfer of Corporate Bonds, etc. shall apply to each Bond.
 (4)Interest rate:
     1.776% per annum
 (5)Issue price:
     100 yen per face value of 100 yen
 (6)Redemption price:
     100% of the principal amount
 (7)Maturity:
     10 years
     ①Maturity date:
        The principal of the Bonds shall be redeemed in a lump sum on June 24 2019.
     ②Purchase or cancel:
        The issuer may at any time purchase or cancel the Bonds from but excluding the payment date.
 (8)Interest payment dates:
     June 24 and December 24 of each year (Initial interest payment date: December 24,2009)
 (9)Offering period:
     Wednesday,June 17,2009
 (10)Payment date:
     Wednesday,June 24,2009
 (11)Method of offering:
     Public offering
 (12)Security or guarantee:
     The Bonds are not secured by any pledge, mortgage or other charge on any assets or revenues of the Company or
     of others, nor are they guaranteed. There are no assets reserved as security for the Bond.
 (13)Negative pledge:
     Applicable
 (14)Underwriters:
     Nomura Securities Co., Ltd. and Daiwa Securities SMBC Co. Ltd. shall serve as the co-lead managing underwriters for
     this syndication.
 (15)Fiscal agent:
     Sumitomo Mitsui Banking Corporation
 (16)Book-entry transfer institution:
     Japan Securities Depository Center, Inc.
 (17)Rating:
     "AA" from Rating and Investment Information, Inc.