Genscript Biotech Corporation — Board/Management Information 2026

Mar 15, 2026

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.

Genscript Biotech Corporation

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 1548)

CHANGE OF COMPANY SECRETARY AND AUTHORISED REPRESENTATIVE UNDER THE COMPANIES ORDINANCE

The board (the "Board") of directors (the "Director(s)") of Genscript Biotech Corporation (the "Company") announces that Ms. Wong Wai Ling ("Ms. Wong") has resigned as the company secretary of the Company (the "Company Secretary") and the authorised representative of the Company under Part 16 of the Companies Ordinance (Chapter 622 of the Laws of Hong Kong) (the "Authorised Representative under the Companies Ordinance") with effect from 15 March 2026.

Ms. Wong confirmed that she has no disagreement with the Board and there is no matter relating to her resignation that needs to be brought to the attention of The Stock Exchange of Hong Kong Limited (the "Stock Exchange") and the shareholders of the Company.

The Board further announces that Ms. Lam Wai Yee Sophie ("Ms. Lam") has been appointed as the Company Secretary and the Authorised Representative under the Companies Ordinance with effect from 15 March 2026.

Ms. Lam is currently a Vice President of the Listed Corporate Secretarial Department at SWCS Corporate Services Group (Hong Kong) Limited, primarily responsible for company secretarial and compliance services for listed clients. With over 20 years of experience in the company secretarial and compliance profession, Ms. Lam has served as the Company Secretary and a Joint Company Secretary of several companies listed on the Main Board of the Stock Exchange.

Ms. Lam holds a Bachelor of Arts (Honours) in Translation and a Postgraduate Diploma in Corporate Administration. She is a Chartered Secretary, a Chartered Governance Professional and a Fellow of The Chartered Governance Institute in the United Kingdom and The Hong Kong Chartered Governance Institute, and holds a Practitioner's Endorsement from The Hong Kong Chartered Governance Institute.

The Board would like to take this opportunity to express its gratitude to Ms. Wong for her contribution to the Company during her tenure of service, and to welcome Ms. Lam on her new appointments.

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By order of the Board
Genscript Biotech Corporation
Robin Meng
Chairman and Executive Director

Hong Kong, 15 March 2026

As at the date of this announcement, the executive Directors are Mr. Jiange Meng (“Mr. Robin Meng”), Dr. Fangliang Zhang (“Dr. Frank Zhang”), Dr. Li Zhu and Ms. Ye Wang (“Ms. Sally Wang”); and the independent non-executive Directors are Dr. Alphonse Galdes, Mr. Yiu Leung Andy Cheung (“Mr. Andy Cheung”), Mr. Jiuan Pan (“Mr. Ethan Pan”), Dr. John Quelch, Dr. Ross Grossman and Dr. Chenyang Shi (“Dr. Victor Shi”).

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