WuXi Biologics Cayman : (1) PROPOSED RE-ELECTION OF RETIRING DIRECTORS (2) PROPOSED ELECTION OF NEW DIRECTOR (3) CONNECTED TRANSACTION INVOLVING GRANT OF RESTRICTED SHARES TO CONNECTED PERSONS PURSUANT TO SPECIFIC MANDATE (4) PROPOSED GRANT OF GENERAL MANDATES TO ISSUE SHARES AND TO REPURCHASE SHARES AND (5) NOTICE OF ANNUAL GENERAL MEETING

THIS CIRCULAR IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION

If you are in any doubt as to any aspect of this circular or as to the action to be taken, you should consult a stockbroker or other registered dealer in securities, a bank manager, solicitor, professional accountant or other professional advisor.

If you have sold or transferred all your shares in WuXi Biologics (Cayman) Inc., you should at once hand this circular, together with the enclosed form of proxy, to the purchaser or transferee or to the bank, stockbroker or other agent through whom the sale or transfer was effected for transmission to the purchaser or transferee.

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this circular, 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 circular.

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)

1. PROPOSED RE-ELECTION OF RETIRING DIRECTORS
2. 1. PROPOSED ELECTION OF NEW DIRECTOR

1. CONNECTED TRANSACTION INVOLVING GRANT OF RESTRICTED SHARES TO CONNECTED PERSONS PURSUANT

TO SPECIFIC MANDATE

1. PROPOSED GRANT OF GENERAL MANDATES TO ISSUE SHARES AND TO REPURCHASE SHARES

AND

(5) NOTICE OF ANNUAL GENERAL MEETING

Independent Financial Advisor to the Independent Shareholders

The notice convening the Annual General Meeting of WuXi Biologics (Cayman) Inc. to be held at the meeting room of Sheraton Shanghai Waigaoqiao Hotel, 28 Jilong Road, Pilot Free Trade Zone, Shanghai, China on Wednesday, June 16, 2021 at 3:00 p.m. is set out in this circular.

Whether or not you are able to attend the Annual General Meeting, you are advised to read the notice and to complete and sign the enclosed form of proxy for use at the Annual General Meeting in accordance with the instructions stated thereon and return it to the Company's Hong Kong branch share registrar, Tricor Investor Services Limited, at Level 54, Hopewell Centre, 183 Queen's Road East, Hong Kong as soon as possible but in any event not less than 48 hours before the time appointed for the holding of the Annual General Meeting (i.e. not later than 3:00 p.m. on Monday, June 14, 2021, Hong Kong time) or any adjournment thereof. Completion and return of the form of proxy will not preclude Shareholders from attending and voting in person at the Annual General Meeting if they so wish. In such event, the form of proxy shall be deemed to be revoked.

This circular together with the form of proxy are also published on the websites of Hong Kong Exchanges and Clearing Limited (www.hkexnews.hk) and the Company (www.wuxibiologics.com).

A letter from the Board is set out on pages 6 to 26 of this circular. A letter from Opus Capital, the Independent Financial Advisor, containing its advice to the Independent Shareholders, is set out on pages 27 to 53 of this circular.

* For identification purpose only

May 17, 2021

	CONTENTS
		Page
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1
Letter from the Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
1.	Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
2.	Proposed Re-election of Retiring Directors . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
3.	Proposed Election of New Director . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8

4. Connected Transaction Involving Grant of Restricted Shares to

	Connected Persons pursuant to Specific Mandate. . . . . . . . . . . . . . . . . . . . . .	9
5.	Proposed Grant of General Mandate to Issue Shares . . . . . . . . . . . . . . . . . . . . .	24
6.	Proposed Grant of General Mandate to Repurchase Shares . . . . . . . . . . . . . . . .	24
7.	Annual General Meeting and Proxy Arrangement . . . . . . . . . . . . . . . . . . . . . . .	25
8.	Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	26
Letter from Opus Capital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	27
Appendix I	-	General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
Appendix II	-	Details of the Directors Proposed to be Re-elected and
			Elected at the Annual General Meeting . . . . . . . . . . . . . . . . . . . .	62
Appendix III	-	Explanatory Statement on the Share Repurchase Mandate. . . . . . .	67
Notice of Annual General Meeting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	71

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DEFINITIONS

In this circular, unless the context otherwise requires, the following expressions shall have the following meanings:

"Annual General Meeting"	the annual general meeting of the Company to be held at
	the meeting room of Sheraton Shanghai Waigaoqiao Hotel,
	28 Jilong Road, Pilot Free Trade Zone, Shanghai, China on
	Wednesday, June 16, 2021 at 3:00 p.m., to consider and, if
	appropriate, to approve the resolutions contained in the
	notice of the meeting which is set out on pages 71 to 77 of
	this circular, or any adjournment thereof
"Articles of Association"	the articles of association of the Company currently in
	force
"associate(s)"	has the meaning ascribed thereto under the Listing Rules
"Board"	the board of Directors
"China" or "PRC"	the People's Republic of China excluding, for the purpose
	of this circular, Hong Kong, Macau Special Administrative
	Region of the People's Republic of China and Taiwan
"Company"	WuXi Biologics (Cayman) Inc., a company incorporated in
	the Cayman Islands with limited liability, the Shares of
	which are listed on the Main Board of the Stock Exchange
"Connected Grantee(s)"	the Grantee(s) who are connected person(s) of the
	Company, namely, Dr. Zhisheng Chen, Dr. Weichang Zhou,
	Mr. William Robert Keller, Mr. Teh-Ming Walter Kwauk,
	Mr. Kenneth Walton Hitchner III, Mr. Jian Dong, Mr.
	Angus Scott Marshall Turner and Mr. Brendan McGrath
"connected person(s)"	has the meaning ascribed thereto in the Listing Rules
"Connected Restricted Shares"	1,493,141 Restricted Shares granted by the Company to the
	Connected Grantees
"Director(s)"	the director(s) of the Company

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	DEFINITIONS
"Eligible Participant(s)"	any Director or employee of the Group
"ESG Committee"	the environmental, social and governance committee of the
	Board
"EU"	a politico-economic union of 27 member states that are
	located primarily in Europe
"Grant"	the grant of the 6,229,361 Restricted Shares to the Grantees
	on March 24, 2021
"Grantee(s)"	the selected Eligible Participant(s) granted or proposed to
	be granted the 6,229,361 Restricted Shares under the
	Scheme
"Group"	the Company and its subsidiaries
"HK$"	Hong Kong dollars, the lawful currency of Hong Kong
"Hong Kong"	the Hong Kong Special Administrative Region of the PRC
"Independent Financial Advisor" or	Opus Capital Limited, a corporation licensed to conduct
"Opus Capital"	Type 1 (dealing in securities) and Type 6 (advising on
	corporate finance) regulated activities under the SFO, the
	independent financial advisor appointed to advise the
	Independent Shareholders in respect of the issue and
	allotment of the Connected Restricted Shares to the
	Connected Grantees, the Specific Mandate and the
	transactions contemplated thereunder
"Independent Shareholders"	the independent Shareholders other than the Connected
	Grantees and their respective associates
"Latest Practicable Date"	May 12, 2021, being the latest practicable date prior to the
	printing of this circular for ascertaining certain information
	in this circular

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	DEFINITIONS
"Listing Rules"	the Rules Governing the Listing of Securities on The Stock
	Exchange of Hong Kong Limited as amended from time to
	time
"Non-connected Grantee(s)"	the Grantee(s) who are not connected person(s) of the
	Company
"Nomination Committee"	the nomination committee of the Board
"Remuneration Committee"	the remuneration committee of the Board
"Restricted Shares"	any Shares that may be offered by the Company to any
	selected Eligible Participant under the Scheme
"RMB"	Renminbi, the lawful currency of the PRC
"RSU Grant Announcement"	the announcement of the Company dated March 24, 2021 in
	relation to, among others, the grant of the 6,229,361
	Restricted Shares to the Grantees and the appointment of
	the Independent Financial Advisor
"Rules"	the rules governing the Scheme adopted by the Board
"Scheme"	the Restricted Share Award Scheme adopted by the Board
	on January 15, 2018 whereby awards of Restricted Shares
	may be made to Eligible Participants under the Scheme
	(such Shares being subscribed or purchased by the Trustee)
"SFO"	the Securities and Futures Ordinance, Chapter 571 of the
	Laws of Hong Kong
"Share(s)"	the ordinary share(s) in the capital of the Company with
	nominal value of US$1/120,000 each
"Shareholder(s)"	the holder(s) of the Shares

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