For Immediate Release
Company name: DAIICHI SANKYO COMPANY, LIMITED Representative: Joji Nakayama, President and CEO
(Code no.: 4568, First Section of Tokyo, Osaka and Nagoya Stock Exchanges) Please address inquiries to Toshiaki Sai, Corporate Officer, Vice President, Corporate Communications Department Telephone: +81-3-6225-1126 http://www.daiichisankyo.com/

Daiichi Sankyo Announces Organizational Restructuring as of April 1, 2012 Tokyo, Japan (March 7, 2012) - Daiichi Sankyo Company, Limited (hereafter; Daiichi Sankyo), today announced the following organizational changes taking place from April 1, 2012. 1. DAIICHI SANKYO CO., LTD. I. Corporate organization

Corporate (the global corporate office and Japan Company Administration Division) will be integrated and divided by category based on function into the Corporate Strategy Division, the Corporate Management Division, the General Affairs & Human Resources Division and the Legal Affairs & CSR Division to consolidate organizational functions and enhance closer cooperation. By increasing coordination of local/global and short/mid to long-term, Daiichi Sankyo seeks to ensure high-level linkage among the four divisions and realize the full application of Corporate's resources.

1) Corporate Strategy Division

The Corporate Strategy Division will be created to consolidate mid to long-term business planning and the strategic planning and promotion functions. The division will comprise the Corporate Strategy Department (new), the Business Development & Licensing Department, the Global Brand Strategy Department (new), and the Intellectual Property Department.