中外製薬（4519） – Partial Corrections to “Notice of Convocation of the Annual General Meeting of Shareholders”

To Shareholders March 28, 2022 Osamu Okuda Representative Director, President CHUGAI PHARMACEUTICAL CO., LTD. Partial Corrections to “Notice of Convocation of the Annual General Meeting of Shareholders” Chugai Pharmaceutical Co., Ltd. (the “Company”) announces the partial corrections to “Notice of Convocation of the 111th Annual General Meeting of Shareholders for the Business Term Ended December 31, 2021,” dated February 28, 2022. The parts which have been corrected are as follows: Corrected Parts: Candidate No.1 Osamu Okuda Summary of career and positions at the Company (Page 12 of the Notice of Convocation) [Currently] Oct. 2008 General Manager of Lifecycle Management Dept. II and Head of Lifecycle of the Company [After correction] Oct. 2008 General Manager of Lifecycle Management Dept. II Jun. 2009 General Manager of Lifecycle Management Dept. II and Head of Lifecycle of the Company Candidate No.2 Hisafumi Yamada Summary of career and positions at the Company (Page 13 of the Notice of Convocation) Senior Vice President, Head of Research Div. of the Company [After correction] Apr. 2016 Senior Vice President, Head of Research Div. of the Company Corrected Parts: [Currently] Apr. 2017 Corrected Parts: Page 50 of the Notice of Convocation [Currently] [After correction] total shareholders return of the Company for the evaluation period between fiscal year 2019 and fiscal year 2021 is 0.77% total shareholders return of the Company for the evaluation period between fiscal year 2019 and fiscal year 2021 is +77% End.