SinoMab BioScience Limited — Board/Management Information 2022

Nov 17, 2022

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

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SinoMab BioScience Limited 中國抗體製藥有限公司

(Incorporated in Hong Kong with limited liability)

(Stock code: 3681)

CHANGE OF COMPANY SECRETARY

The board of directors (the ‘‘Board’’) of SinoMab BioScience Limited (the ‘‘Company’’) announces that Ms. WONG Pui Yin Peony (‘‘Ms. Wong’’) has tendered her resignation as the company secretary of the Company with effect from 17 November 2022. Ms. Wong has confirmed that she has no disagreement with the Board and there is no matter relating to her resignation which needs to be brought to the attention of the shareholders of the Company.

The Board further announces that Ms. CHAN Sze Ting (‘‘Ms. Chan’’) has been appointed to replace Ms. Wong as the company secretary of the Company with effect from 17 November 2022.

Ms. Chan is an associate director of the corporate services division of Tricor Services Limited, which is a global professional services supplier specializing in integrated business, corporate and investor services. Ms. Chan has over 16 years of experience in the corporate secretarial field and has been providing professional corporate services to Hong Kong listed companies as well as multinational, private and offshore companies. Ms. Chan is a Chartered Secretary (CS), a Chartered Governance Professional (CGP) and an Associate of both The Hong Kong Chartered Governance Institute (HKCGI) and The Chartered Governance Institute (CGI) in the United Kingdom. Ms. Chan holds a bachelor of arts from Hong Kong Polytechnic University and a bachelor’s degree in law from the University of London, Britain.

The Board would like to take this opportunity to express its sincere gratitude to Ms. Wong for her valuable contribution to the Company during her tenure of service and also extend a warm welcome to Ms. Chan on her new appointment.

By Order of the Board

SinoMab BioScience Limited Dr. Shui On LEUNG

Executive Director, Chairman and Chief Executive Officer

Hong Kong, 17 November 2022

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As at the date of this announcement, the executive director of the Company is Dr. Shui On LEUNG, the non-executive directors of the Company are Dr. Haigang CHEN, Mr. Xun DONG, Ms. Wenyi LIU, Ms. Jie LIU and Mr. Lei SHI, and the independent non-executive directors of the Company are Mr. George William Hunter CAUTHERLEY, Mr. Ping Cho Terence HON, Dr. Chi Ming LEE and Mr. Dylan Carlo TINKER.

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