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/

Notice on Details of the Share OptionsTOKYO, Japan (July 12, 2011) – Daiichi Sankyo Company, Limited has announced that the subscription amount and other details of its No.5 share options were decided today. As previously announced, the Board of Directors had reached a decision on June 27, 2011 to issue the said share remuneration-type stock options (share options) to remunerate Directors (excluding Outside Directors) and Corporate Officers

1. Name of share options

Daiichi Sankyo Company, Limited No. 5 share options

2. Total number of share options

2,328 share options (100 shares per one share option) Breakdown

Six (6) Directors: 1,102 share options

Eighteen (18) Corporate Officers: 1,226 share options

3. Subscription amount for share options

111,200 yen per share option

(1,112 yen per share)

Reference

Date of Board of Directors resolution: June 27, 2011

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