Sosei Co., Ltd. Announces Company Name Change Of Two Affiliates  
5/15/2006 10:47:07 AM

TOKYO and LONDON, May 15 /PRNewswire-FirstCall/ -- Sosei Co. Ltd. announced today that its two affiliate companies, Arakis Ltd. in the UK and Kosei, Inc. in the US, change their company names to unify corporate identification within the Sosei Group.

Detail of the company name change 1: Current company name Arakis Limited. New company name Sosei R&D Ltd. Business Biopharmaceutical Research and Development Address Chesterford Research Park Little Chesterford, Saffron Walden Essex CB10 1XL, United Kingdom Representative Robin Bannister, Managing Director Effective 1 June, 2006 2: Current company name Kosei, Inc. New company name Sosei Inc. Business US base Address 630 Fifth Avenue, Suite 2005 New York, NY 10111, USA Representative John Daffurn, President and CEO Effective 28 April, 2006

Sosei Co Ltd

CONTACT: Sosei Co. Ltd., Ichiban-cho FS Bldg., 8 Ichiban-cho, Chiyoda-ku,Tokyo 102-0082 Japan, Hiroki Maekawa, Vice President of Corporate Planning,E-mail:, Tel: +81-3-5210-3399, Fax: +81-3-5210-3291.Sosei Co. Ltd. London office, Centro 3, 19 Mandela Street, London NW1 0DU,UK, Julian Gilbert, Chief Business Officer, E-mail:,Tel: +44-207-529-8392, Fax: +44-207,529-8401