Headquarters: Bunkyo City, Tokyo, JapanEisai Co., Ltd. is a Japanese pharmaceutical company headquartered in Tokyo, Japan. It has some 10,000 employees, among them about 1,500 in research. Eisai is listed on the Tokyo Stock Exchange and is a member of the Topix 100 and Nikkei 225 stock indices.
Subsidiaries: Eisai Korea Inc., Eisai Australia Pty. Ltd, MORE
CEO: Haruo Naito (1988–)
Employees number: 10,419 (consolidated, as of March 31, 2014)