Press release
May 12, 2011

Sosei Announces Collaboration with Toa Pharmaceuticals and Nitto Medic

Tokyo, Japan – 12 May 2011: Sosei Group Corporation (“Sosei”; TSE Mothers Index: 4565), announced today that it and its wholly owned subsidiary Activus Pharma (“Activus”) have entered into a Joint Development Agreement with Toa Pharmaceuticals Co., Ltd (“Toa”) and its subsidiary Nitto Medic Co., Ltd (“Nitto”).

Under the terms of the agreement, Toa and Nitto, both which has proven track-record and know-how in the manufacturing and sales of medical products, and Sosei and Activus will jointly conduct research and development to assess the feasibility of developing various ophthalmic solutions applying Activus Pure Nano-particle Technology (“APNT”).

Once a product has been identified for development, a separate agreement towards commercialization will be executed.