Shanghai Junshi Biosciences Co., Ltd. — Proxy Solicitation & Information Statement 2025

May 29, 2025

君实生物

TopAlliance

SHANGHAI JUNSHI BIOSCIENCES CO., LTD.*

上海君實生物醫藥科技股份有限公司

(a joint stock company incorporated in the People's Republic of China with limited liability)

(Stock code: 1877)

FORM OF PROXY FOR THE 2024 ANNUAL GENERAL MEETING

TO BE HELD ON FRIDAY, 20 JUNE 2025

I/We, (Note 1)

of (Note 1)

being the registered holder(s) of (Note 2) A Shares/H Shares (Note 3) of Shanghai Junshi Biosciences Co., Ltd.* (the "Company"),

HEREBY APPOINT THE CHAIRMAN OF THE MEETING (Note 4) or

of

as my/our proxy to attend and vote for me/us on my/our behalf at the 2024 annual general meeting ("AGM") of the Company to be held at 15th Floor, Building 7, No. 6, Lane 100, Pingjiiajiao Road, Pudong New Area, Shanghai, the People's Republic of China on Friday, 20 June 2025 at 2:30 p.m. or any adjournment thereof for the purpose of considering and, if thought fit, passing the resolutions as set out in the notice convening the AGM as indicated below or if no such indication is given, as my/our proxy thinks fit and in respect of any other business that may properly come before the AGM and/or at any adjournment thereof.

Unless otherwise stated, capitalized terms used herein shall have the same meanings as that defined in the circular of the Company dated 29 May 2025.

ORDINARY RESOLUTIONS		FOR (Notes 5 & 6)	AGAINST (Notes 5 & 6)	ABSTAIN (Notes 5 & 6)
1.	The proposal in relation to the 2024 Report of the Board of Directors
2.	The proposal in relation to the 2024 Report of the Board of Supervisors
3.	The proposal in relation to the 2024 Annual Report and its summary
4.	The proposal in relation to the 2024 Financial Accounts Report
5.	The proposal in relation to the 2024 Profit Distribution Plan
6.	The proposal in relation to the application for financing and credit lines from financial institution(s) for 2025
7.	The proposal in relation to the remuneration of Directors for 2025
8.	The proposal in relation to the remuneration of Supervisors for 2025
9.	The proposal in relation to the appointment of the PRC and overseas auditors for 2025
10.	The proposal in relation to the changes in and adjustment of amounts of certain investment sub-projects of the 2022 Issuance of A Shares
SPECIAL RESOLUTIONS		FOR (Notes 5 & 6)	AGAINST (Notes 5 & 6)	ABSTAIN (Notes 5 & 6)
11.	The proposal in relation to the estimated external guarantee quota for 2025
12.	The proposal in relation to the grant of the general mandate to issue domestic and/or overseas debt financing instruments
13.	The proposal in relation to the general mandate to issue additional A Shares and/or H Shares

Date: _______

Signature (Note 7): _______

Notes:

1. Please insert full name(s) and address(es) (as shown in the register of members) in BLOCK CAPITALS.
2. Please insert the number of shares of the Company registered under your name(s). If no number is inserted, this form of proxy will be deemed to relate to all the shares of the Company registered under your name(s).
3. Please delete as appropriate.
4. Any member of the Company entitled to attend and vote at the meeting is entitled to appoint one or more persons as his/her proxy(ies) to attend and vote on his/her behalf. A proxy need not be a member of the Company but must attend the meeting in person to represent the member. If a proxy/provider other than the Chairman is preferred, strike out the words "THE CHAIRMAN OF THE MEETING" and insert the full name(s) and address(es) of the proxy (or proxies) desired in the space provided. A member of the Company who is the holder of two or more shares may appoint more than one proxy to represent him/her and vote on his/her behalf at the meeting provided that if more than one proxy is so appointed, the appointment shall specify the number and class of shares in respect of which each such proxy is so appointed. IF NO NAME IS INSERTED, THE CHAIRMAN OF THE MEETING WILL ACT AS YOUR PROXY. ANY ALTERATION MADE TO THIS FORM OF PROXY MUST BE INITIALED BY THE PERSON WHO SIGNS THIS FORM.
5. IMPORTANT: IF YOU WISH TO VOTE FOR ANY RESOLUTION, PLEASE TICK (,) THE APPROPRIATE BOXES MARKED "FOR". IF YOU WISH TO VOTE AGAINST ANY RESOLUTION, PLEASE TICK (,) THE APPROPRIATE BOXES MARKED "AGAINST". IF YOU WISH TO ABSTAIN FROM VOTING ON ANY RESOLUTION, PLEASE TICK (*,) THE APPROPRIATE BOXES MARKED "ABSTAIN". Failure to complete any or all the boxes will entitle your proxy to cast his/her votes at his/her discretion. Your proxy will also be entitled to vote at his/her discretion on any resolution properly put to the meeting other than that referred to in the notice convening the meeting.
6. The resolution will be put to vote by way of poll at the meeting. Every member of the Company present in person (in the case of a member being a corporation, by its duly authorized representative) or by proxy shall have one vote for every fully paid share of which he/she is the holder. A person entitled to more than one vote on a poll need not use all his/her votes or cast all the votes he/she uses in the same way and in such cases, please state the relevant number of shares in the appropriate box(es) above.
7. This form of proxy must be signed by you or your attorney duly authorized in writing or, in the case of a corporation, must be either under its common seal or under the hand of an officer, attorney or other person authorized to sign the same.
8. To be valid, this form of proxy together with the power of attorney (if any) or other authority (if any) under which it is signed or a certified copy thereof, must be deposited at the Company's H Share registrar, Tricor Investor Services Limited at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong (for holders of H Shares) not later than 24 hours before the time appointed for this AGM or any adjournment thereof.
9. Where there are joint registered holders of any share, any one of such persons may vote at the meeting, either in person or by proxy, in respect of such share and be deemed solely entitled thereto; but if more than one of such joint holders be present at the meeting, the vote of the senior holder who tenders a vote, whether in person or by proxy, shall be accepted to the exclusion of the votes of the other joint holders and, for this purpose, seniority shall be determined by the order in which the names stand in the register of members of the Company in respect of the joint holding.
10. Completion and return of the form of proxy will not preclude you from attending and voting at the meeting in person or any adjournment thereof and, in such event, the form of proxy shall be deemed invalid.
11. Shareholders or their proxy(ies) attending this AGM should produce their identification documents.
12. Reference to times and dates in this form of proxy are to Hong Kong local times and dates.

PERSONAL INFORMATION COLLECTION STATEMENT

"Personal Data" in this statement has the same meaning as "personal data" defined in the Personal Data (Privacy) Ordinance (Chapter 486 of the laws of Hong Kong) (the "PDPO"), which may include but not limited to your name, contact telephone number, email address and mailing address. Your supply of Personal Data is on a voluntary basis for the purpose of receiving Corporate Communications in the manner chosen. Your Personal Data will be retained for such period as may be necessary for our verification and record purposes.

You have the right to request access to and/or correction of the respective Personal Data in accordance with the provisions of the PDPO. Any such request for access to and/or correction of the Personal Data should be in writing by either of the following means:

By mail to: Privacy Compliance Officer
Tricor Investor Services Limited
17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong

By email to: is-enguires@vistra.com

• For identification purpose only.