Hong Kong Exchanges and Clearing Limited

FORM 2 - Corporate Substantial Shareholder Notice

Form Serial Number:

CS20260629E00478

1. Date of relevant event:

24/06/2026
(dd/mm/yyyy)

2. Date when the substantial shareholder becomes aware of the relevant event / interest in the shares (if later):

26/06/2026
(dd/mm/yyyy)

3. Stock code:

03759

4. Name of listed corporation:

Pharmaron Beijing Co., Ltd. - H Shares

5. Class of shares:

H Shares

6. Number of issued shares in class:

359,977,887

7. Name of substantial shareholder:

JPMorgan Chase & Co.

8. Registered office:

270 Park Avenue, New York, New York, NY, 10017, United States

9. Principal place of business in Hong Kong:

N/A

15. Exchange on which listed:

New York Stock Exchange

16. Name of listed parent and exchange on which parent is listed:

N/A

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

1001	You first acquire a notifiable interest because: you purchased the shares

2201	Interest of corporation controlled by you

2201	Interest of corporation controlled by you

1,242,632

HKD

16.6200

16.3360

16.3480

3101

Cash

Short position

1403	You came to have a short position of 1% or more in the shares, or the percentage level of your short position in such shares increased because: any other event (you must briefly describe the relevant event in the Supplementary Information box)

2201	Interest of corporation controlled by you

2201	Interest of corporation controlled by you

1,132,464

18. Total shares immediately before the relevant event:

	Total number of shares	Percentage figure (%)
Long position	17,653,131	4.90
Short position	5,746,657	1.59
Lending Pool	5,598,622	1.55

19. Total shares immediately after the relevant event:

	Total number of shares	Percentage figure (%)
Long position	18,895,763	5.24
Short position	6,879,121	1.91
Lending Pool	5,598,022	1.55

20. Capacity in which interests disclosed in Box 19 are held:

Capacity code

Number of shares

2101	Beneficial owner

Long position	7,026,336
Short position	6,879,121

2102	Investment manager

Long position	425,600
Short position	0

2106	Person having a security interest in shares

Long position	5,845,805
Short position	0

2502	Approved lending agent

Long position	5,598,022
Short position	0

21. Further information in respect of derivative interests:

Derivatives code

Number of shares

4105	Unlisted derivatives - Physically settled

Long position	79,319
Short position	158,638

4106	Unlisted derivatives - Cash settled

Long position	219,500
Short position	4,238,475

22. Further information in relation to interests of corporations controlled by substantial shareholder:

Name of controlled corporation

Address and place of incorporation

Name of controlling person

% control

Direct interest (Y/N)

Number of shares

J.P. Morgan Securities LLC

270 Park Avenue New York NY 10017 United States

J.P. Morgan Broker-Dealer Holdings Inc.

100.00

Long position	5,739,745
Short position	0

JPMORGAN ASSET MANAGEMENT (UK) LIMITED

60 Victoria Embankment London EC4Y0JP England

JPMORGAN ASSET MANAGEMENT INTERNATIONAL LIMITED

100.00

Long position	282,600
Short position	0

J.P. Morgan Investment Management Inc.

270 Park Avenue New York NY 10017 United States

JPMorgan Asset Management Holdings Inc.

100.00

Long position	79,900
Short position	0

J.P. Morgan Prime Inc.

270 Park Avenue New York NY 10017 United States

J.P. Morgan Securities LLC

100.00

Long position	154,360
Short position	48,300

JPMorgan Asset Management (Taiwan) Limited

20F & 21, No.1 Song Zhi Rd, Xin Yi District, Taipei City, Taiwan. Taipei 110 Taiwan (Province of China)

JPMorgan Asset Management (Asia) Inc.

100.00

Long position	63,100
Short position	0

JPMorgan Chase Bank, National Association

1111 Polaris Parkway Columbus OH 43240 United States

JPMorgan Chase & Co.

100.00

Long position	5,598,022
Short position	0

J.P. MORGAN SECURITIES PLC

25 Bank Street Canary Wharf London E14 5JP England

J.P. MORGAN CAPITAL HOLDINGS LIMITED

100.00

Long position	6,978,036
Short position	6,830,821

J.P. Morgan Broker-Dealer Holdings Inc.

4 Chase Metrotech Center 4th Floor Brooklyn NY 11245 United States

JPMorgan Chase Holdings LLC

100.00

Long position	5,894,105
Short position	48,300

JPMorgan Chase Holdings LLC

270 Park Avenue New York NY 10017 United States

JPMorgan Chase & Co.

100.00

Long position	6,319,705
Short position	48,300

JPMORGAN ASSET MANAGEMENT INTERNATIONAL LIMITED

60 Victoria Embankment London EC4Y0JP England

JPMorgan Asset Management Holdings Inc.

100.00

Long position	282,600
Short position	0

JPMorgan Asset Management Holdings Inc.

270 Park Avenue New York NY 10017 United States

JPMorgan Chase Holdings LLC

100.00

Long position	425,600
Short position	0

J.P. Morgan Securities LLC

270 Park Avenue New York NY 10017 United States

J.P. Morgan Broker-Dealer Holdings Inc.

100.00

Long position	154,360
Short position	48,300

JPMorgan Asset Management (Asia) Inc.

270 Park Avenue New York NY 10017 United States

JPMorgan Asset Management Holdings Inc.

100.00

Long position	63,100
Short position	0

J.P. MORGAN CAPITAL HOLDINGS LIMITED

25 Bank Street Canary Wharf London E14 5JP England

J.P. Morgan International Finance Limited

100.00

Long position	6,978,036
Short position	6,830,821

J.P. Morgan International Finance Limited

270 Park Avenue New York NY 10017 United States

JPMorgan Chase Bank, National Association

100.00

Long position	6,978,036
Short position	6,830,821

JPMorgan Chase Bank, National Association

1111 Polaris Parkway Columbus OH 43240 United States

JPMorgan Chase & Co.

100.00

Long position	6,978,036
Short position	6,830,821

23. Further information in relation to interests held by substantial shareholder jointly with another person:

Name of joint shareholder	Address	Number of shares

24. Further information from a trustee, a beneficiary of a trust, or a person who set up a discretionary trust:

Names of trust	Address	Status code	Number of shares

25. Further information from a party to an agreement under Section 317 (Please see Notes for further information required):

Names of other parties	Address	Number 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:

Names	Address	Relationship Code	Percentage (%)

27. Supplementary information:

JP Morgan Chase & Co. came to have a short position of 1% or more in the shares, or the percentage level of your short position in such shares increased.

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:

29/06/2026
(dd/mm/yyyy)