WuXi Biologics Cayman : POSITIVE PROFIT ALERT

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WUXI BIOLOGICS (CAYMAN) INC.

藥明生物技術有限公司*

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 2269)

POSITIVE PROFIT ALERT

This announcement is made by WuXi Biologics (Cayman) Inc. (the "Company", together with its subsidiaries, the "Group") pursuant to Rule 13.09 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules") and the Inside Information Provisions (as defined under the Listing Rules) under Part XIVA of the Securities and Futures Ordinance (Cap. 571 Laws of Hong Kong).

The board (the "Board") of directors (the "Directors") of the Company wishes to inform the shareholders (the "Shareholders") and the potential investors of the Company that, based on the preliminary assessment of the unaudited consolidated management accounts of the Group (prepared in accordance with International Financial Reporting Standards (IFRS)) for the six months ended June 30, 2020, it is expected that the profit attributable to equity shareholders of the Company for the six months ended June 30, 2020 will increase more than 58% compared with the profit attributable to equity shareholders of the Company for the corresponding period of last year. Such increase was primarily attributable to (i) immediate and effective implementation of Business Continuity Plan to minimize the impact of the COVID-19 pandemic on its business and operations; (ii) more client projects were added into the Group's pipeline expediting the development and manufacturing of potential treatments related to COVID-19 in support of its global clients; (iii) utilization improvement of our existing capacities, which were partially offset by the ramp-up of new sites, and by the increase of administrative expenses in line with the Group's business growth; and

1. gains from investments, foreign exchange, tax refund from prior years and other non- operating income recorded.

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The Company is still in the process of finalizing the interim results of the Group for the six months ended June 30, 2020. The information contained in this announcement is only based on the preliminary assessment of the unaudited consolidated management accounts of the Group for the six months ended June 30, 2020, which are subject to finalization and other potential adjustments, if any, and have not been reviewed or confirmed by the auditors of the Group or the audit committee of the Board. Shareholders and potential investors of the Company should refer to the interim results announcement of the Group for the six months ended June 30, 2020, which is expected to be published by the middle of August 2020.

Shareholders and potential investors of the Company are advised to exercise caution when dealing in the shares of the Company.

By order of the Board

WuXi Biologics (Cayman) Inc.

Dr. Ge Li

Chairman

Hong Kong, July 29, 2020

As at the date of this announcement, the Board comprises Dr. Zhisheng Chen and Dr. Weichang Zhou as executive Directors; Dr. Ge Li, Mr. Edward Hu, Mr. Yibing Wu and Mr. Yanling Cao as non-executive Directors; and Mr. William Robert Keller, Mr. Teh-Ming Walter Kwauk and Mr. Kenneth Walter Hitchner III as independent non-executive Directors.

*For identification purpose only

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