FORM 2 - Corporate Substantial Shareholder Notice
 
Form Serial Number: CS20260903E00576 
1. Date of relevant event: 31/08/2026
(dd/mm/yyyy)
2. Date when the substantial shareholder becomes aware of the relevant event / interest in the shares (if later):
(dd/mm/yyyy)
3. Stock code: 02268
4. Name of listed corporation: WuXi XDC Cayman Inc. 
5. Class of shares: Ordinary Shares 
6. Number of issued shares in class: 1,268,174,784
7. Name of substantial shareholder: WuXi AppTec Co., Ltd. (無錫藥明康德新藥開發股份有限公司) 
8. Registered office: Mashan No. 5 Bridge, Binhu District, Wuxi, Jiangsu Province, PRC
9. Principal place of business in Hong Kong: Tricor Investor Services Limited, at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong 
15. Exchange on which listed: 聯交所（股份代號：2359）及上海證券交易所（股份代號：603259）
16. Name of listed parent and exchange on which parent is listed:  
17. Details of relevant event:
  Brief description of relevant event Capacity in which shares were/are held Number of shares bought/sold or involved Currency of transaction On Exchange Off Exchange
Before relevant event After relevant event Highest price (per share) Average price (per share) Average consideration (per share) Nature of consideration
Long position
1201The percentage level of your interest in the shares has reduced because:
you completed a sale of the shares
2201Interest of corporation controlled by you
53,524,000 HKD 73.2300
3101Cash
Short position 
 
 
 		            
18. Total shares immediately before the relevant event:
 Total number of sharesPercentage figure (%)
Long position232,900,00018.36
19. Total shares immediately after the relevant event:
 Total number of sharesPercentage figure (%)
Long position179,376,00014.14
20. Capacity in which interests disclosed in Box 19 are held:
Capacity codeNumber of shares
2201Interest of corporation controlled by you
Long position179,376,000

21. Further information in respect of derivative interests:
Derivatives codeNumber of shares
  
22. Further information in relation to interests of corporations controlled by substantial shareholder:
Name of controlled corporationAddress and place of incorporationName of controlling person% controlDirect interest (Y/N)Number of shares
WuXi AppTec (Shanghai) Pharmaceutical R&D Co., Ltd. (藥明康德（上海）醫藥研發有限公司)Room 368, Unit 302, No. 211 Fute North Road, China (Shanghai) Pilot Free Trade Zone, Shanghai, PRC (Incorporated in the PRC)WuXi AppTec Co., Ltd. (無錫藥明康德新藥開發股份有限公司)100.00N
Long position179,376,000
Shanghai SynTheAll Pharmaceutical Co., Ltd. (上海合全藥業股份有限公司)No. 9 YueGong Road, Jinshan, Shanghai, PRC (Incorporated in the PRC)WuXi AppTec (Shanghai) Pharmaceutical R&D Co., Ltd. (藥明康德（上海）醫藥研發有限公司)98.90N
Long position179,376,000
STA Pharmaceutical Hong Kong Investment Limited (合全藥業香港投資有限公司)Unit 826, 8/F, Ocean Centre, Harbour City, 5 Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong (Incorporated in Hong Kong)Shanghai SynTheAll Pharmaceutical Co., Ltd. (上海合全藥業股份有限公司)100.00Y
Long position179,376,000

23. Further information in relation to interests held by substantial shareholder jointly with another person:
Name of joint shareholderAddressNumber of shares
 
24. Further information from a trustee, a beneficiary of a trust, or a person who set up a discretionary trust:
Names of trustAddressStatus codeNumber of shares
  
25. Further information from a party to an agreement under Section 317 (Please see Notes for further information required):
Names of other partiesAddressNumber of shares
 
Total number of shares in which a substantial shareholder is interested under sections 317 and 318
26. Details of person(s) in accordance with whose directions the substantial shareholder or its directors are accustomed to act:
NamesAddressRelationship CodePercentage (%)
  
 
27. Supplementary information:
28. Log/Serial Number of the previous form:
29. Number of concert party document(s) under section 317 attached/uploaded:
Date of filing this Form 2: 03/09/2026
(dd/mm/yyyy)