SinoMab BioScience Limited — Board/Management Information 2020

Mar 23, 2020

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 AND COMPOSITION OF THE AUDIT COMMITTEE

The board of directors (the “ Board ”) of SinoMab BioScience Limited (the “ Company ”) announces that Ms. Mei Chun CHENG (“ Ms. Cheng ”) has tendered her resignation as the company secretary of the Company with effect from 1 April 2020. Ms. Cheng 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. Pui Yin Peony WONG (“ Ms. Wong ”) has been appointed to replace Ms. Cheng as the company secretary of the Company with effect from 1 April 2020.

Ms. Wong is currently a senior manager of Corporate Services of Tricor Services Limited.

Ms. Wong has over 20 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. Wong is a member of the Hong Kong Institute of Certified Public Accountants and a member of the CPA Australia. She holds a Bachelor of Commerce (Accounting and Finance) and a Master of Business Administration from the University of New South Wales.

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

The Board also announces that Mr. George William Hunter CAUTHERLEY, an existing independent non-executive director of the Company, has been appointed as a member of the Audit Committee of the Company with effect from 1 April 2020.

By Order of the Board SinoMab BioScience Limited Dr. Shui On LEUNG Executive Director, Chairman and Chief Executive Officer

Hong Kong, 23 March 2020

As at the date of this announcement, the executive Directors are Dr. Shui On LEUNG and Mr. Jing QIANG, the non-executive Directors are Ms. Wenyi LIU, Dr. Haigang CHEN, Mr. Senlin LIU, Mr. Huiyuan MA and Mr. Xun DONG, and the independent non-executive Directors are Mr. Dylan Carlo TINKER, Mr. Michael James Connolly HOGAN, Mr. Ping Cho Terence HON and Mr. George William Hunter CAUTHERLEY.