CStone Pharmaceuticals — Proxy Solicitation & Information Statement 2025

Jun 3, 2025

1951

基石药业

CSTONE

PHARMACEUTICALS

CStone Pharmaceuticals

基石藥業

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 2616)

FORM OF PROXY FOR ANNUAL GENERAL MEETING

I/We (Name) _________ (Block capitals, please)

of (Address) _________

being the holder(s) of _________ (see Note 1) shares of US$0.0001 each in the capital of CStone Pharmaceuticals

(the "Company") hereby appoint (Name) _________

of (Address) _________

or failing him/her (Name) _________

of (Address) _________

or failing him/her, the chairman of the meeting (see Note 2) as my/our proxy to attend and vote for me/us and on my/our behalf at the annual general meeting of the Company to be held at Floor 32, Building B, The New Bund World Trade Center Phase I, No. 5, Lane 255, Dong Yu Road, Pudong New District, Shanghai, China on Wednesday, June 25, 2025 at 10:00 a.m., and at any adjournment thereof or on any resolution or motion which is proposed thereat. My/our proxy is authorised and instructed to vote as indicated (see Note 3) in respect of the undermentioned resolutions:

Ordinary Resolutions (see Note 3)		For	Against
1.	To receive and consider the audited consolidated financial statements of the Company and the reports of the directors ("Directors") and auditor of the Company for the year ended December 31, 2024
2.	(i) To re-elect Dr. Wei Li as a non-executive Director
	(ii) To re-elect Ms. Yip Betty Ho as an independent non-executive Director
3.	To authorise the board of Directors to fix the remuneration of the Directors
4.	To re-appoint Deloitte Touche Tohmatsu as auditor of the Company and authorise the board of Directors to fix their remuneration
5.	To grant a general mandate to the Directors to allot, issue and deal with additional shares (including any sale or transfer of treasury shares out of treasury) not exceeding 20% of the total issued shares of the Company (excluding any treasury shares of the Company)
6.	To grant a general mandate to the Directors to buy back shares not exceeding 10% of the total issued shares of the Company (excluding any treasury shares of the Company)
7.	To extend the authority given to the Directors pursuant to ordinary resolution no. 5 to issue shares by adding to the issued shares of the Company the number of shares bought back under ordinary resolution no. 6

Dated this __ day of __ 2025

Signature(s) _________ (see Note 5)

Notes:

1. Please insert the number of shares registered in your name(s); if no number is inserted, this form of proxy will be deemed to relate to all the shares in the capital of the Company registered in your name(s).

2. A member may appoint more than one proxy of his/her own choice. If such an appointment is made, strike out the words "the chairman of the meeting", and insert the name(s) of the person(s) appointed as proxy in space provided. Any alteration made to this form of proxy must be initialled by the person who signs it.

3. IMPORTANT: IF YOU WISH TO VOTE FOR ANY RESOLUTION, PLEASE TICK THE BOX MARKED "For". IF YOU WISH TO VOTE AGAINST ANY RESOLUTION, PLEASE TICK THE BOX MARKED "Against". Failure to tick a box will entitle your proxy to cast your vote 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 those referred to in the notice convening the meeting.

4. If the appointor is a corporation, this form must be under common seal or under the hand of an officer, attorney, or other person duly authorised on that behalf.

5. In the case of joint holders, the signature of any one holder will be sufficient but the names of all the joint holders should be stated. Where there are joint holders of any share of the Company, any one of such joint holders may vote at the meeting, either in person or by proxy, in respect of such share as if he/she were solely entitled thereto, but if more than one of such joint holders be present at the meeting, the vote of the senior who tenders a vote, whether in person or by proxy, will be accepted to the exclusion of the votes of the other joint holders, and for this purpose seniority shall be determined as that one of the said persons so present whose name stands first on the register in respect of such share shall alone be entitled to vote in respect thereof.

6. To be valid, this form of proxy must be completed, signed and deposited at the Company's Share Registrar in Hong Kong, Computershare Hong Kong Investor Services Limited, at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong together with the power of attorney or other authority (if any) under which it is signed (or a notarially certified copy thereof), not less than 48 hours before the time for holding the meeting (i.e. by no later than 10:00 a.m. on Monday, June 23, 2025). The completion and return of the form of proxy shall not preclude shareholders of the Company from attending and voting in person at the above meeting (or any adjourned meeting thereof) if they so wish.

7. A proxy need not be a shareholder of the Company.

PERSONAL INFORMATION COLLECTION STATEMENT

Your supply of your and your proxy's (or proxies') name(s) and address(es) is on a voluntary basis for the purpose of processing your request for the appointment of a proxy (or proxies) and your voting instructions for the above meeting of the Company (the "Purposes"). We may transfer your and your proxy's (or proxies') name(s) and address(es) to our agent, contractor, or third party service provider who provides administrative, computer and other services to us for use in connection with the Purposes and to such parties who are authorised by law to request the information or are otherwise relevant for the Purposes and need to receive the information. Your and your proxy's (or proxies') name(s) and address(es) will be retained for such period as may be necessary to fulfil the Purposes. Request for access to and/or correction of the relevant personal data can be made in accordance with the provisions of the Personal Data (Privacy) Ordinance and any such request should be in writing by mail to Computershare Hong Kong Investor Services Limited at the above address.