Press release
Sep 6, 2010

Sosei Announces Issuance of Stock Options (Stock Acquisition Rights)

Tokyo, Japan – 6 September 2010: Sosei Group Corporation (“Sosei”; TSE, Mothers Index: 4565), a biopharmaceutical company, hereby announces that the Board of Directors today approved the issuance of 3,065 stock options that were approved at the Annual Shareholders Meeting on 22 June to directors, officers, and employees, as well as to directors and employees of its subsidiaries. The options exercisable at a price of 72,540 yen, are subject to a hold period of two years, and will expire 10 years from the date of issue.