Eisai Co., Ltd.

We give first thought to patients and their families, and to increasing the benefits health care provides

May 18, 2012: EISAI TO PRESENT NEW RESEARCH ON ONCOLOGY PRODUCT PORTFOLIO AND PIPELINE AT 48^th ASCO ANNUAL MEETING
May 15, 2012: Proposed Changes in Representative Officers
May 15, 2012: Issuance of Stock Acquisition Rights for the Purpose of Granting Stock Options to the Company’s Employees

May 16, 2012: IR “Annual Financial Results Explanation for the Fiscal Year Ended March 31, 2012 [Material, Webcast] ”
May 15, 2012: IR “Annual Financial Results for the Fiscal Year Ended March 31, 2012 ”
May 7, 2012: Access to Medicines “Eisai's advocacy activities ”
March 30, 2012: Commitment & Passion for hhc “Interacting with Cancer Patients at Kawashima Industrial Park-Experiencing Patient Emotions Firsthand ”

May 16, 2012: Haruo Naito Assumes Role of President of the Federation of Pharmaceutical Manufacturers' Associations of Japan
May 15, 2012: Corporate Governance Report Updated
May 10, 2012: CORRECTION TO NEWS RELEASE ISSUED AUGUST 2, 2011
April 13, 2012: Revised Eisai's Corporate Governance Guidelines

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