AIM Vaccine Co., Ltd. — Proxy Solicitation & Information Statement 2026

May 18, 2026

全国艾美疫苗全产业链疫苗集团

AIM Vaccine Co., Ltd.

艾美疫苗股份有限公司

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

(Stock Code: 06660)

FORM OF PROXY OF HOLDERS OF H SHARES

FOR USE AT THE ANNUAL GENERAL MEETING TO BE HELD ON JUNE 10, 2026

I/We (Note 1)

of

being the holder(s) of ________ overseas listed foreign

share(s) ("H Share(s)") (Note 2) of AIM Vaccine Co., Ltd. (the "Company"), hereby appoint the chairman of the annual general meeting (the "AGM")

or

of

as my/our proxy to attend the AGM of the Company to be held at meeting room, 10/F, Gangwu Building, No. 1 Fenghe Road, Lujiazui Street, Pudong New District, Shanghai, the PRC at 10:00 a.m. on Wednesday, June 10, 2026 and to vote for me/us as indicated below. Unless otherwise stated, capitalized terms used herein shall have the same meanings as that defined in the circular of the Company dated May 19, 2026 (the "Circular").

Please tick or insert the number of H Shares in the appropriate boxes to indicate how you wish your vote(s) to be cast on a poll (Note 3).

ORDINARY RESOLUTIONS		For	Against	Abstain
1.	To consider and approve the report of the Directors for the year 2025.
2.	To consider and approve the 2025 annual report of the Company.
3.	To consider and approve the final settlement of accounts of the Company for the year 2025.
4.	To consider and approve the audited financial statements of the Group for the year 2025.
5.	To consider and approve the grant of authorization to the Board to approve the financial budget of the Group for the year 2026.
6.	To consider and approve the profit distribution plan of the Company for the year 2025.
7.	To consider and approve the re-appointment of Ernst & Young as auditor of the Company for the year 2026.
8.	To consider and approve the appointment of the following Directors:
a.	Ms. Ling LIU as an executive Director.
b.	Mr. Hui OUYANG as an independent non-executive Director.
c.	Mr. Weicai SHAO as an independent non-executive Director.
SPECIAL RESOLUTIONS		For	Against	Abstain
9.	To consider and approve the resolution on the proposed amendments to the Articles of Association and the Rules of Procedure of the Board of Directors.
10.	To grant the Board a general mandate to allot, issue or otherwise deal with new Shares not exceeding 20% of the total number of Shares in issue as at the date of passing the special resolution according to special resolution No. 10 set out in the Circular.
11.	To grant the Board a general mandate to repurchase H Shares not exceeding 10% of the total number of H Shares in issue as at the date of passing the special resolution according to special resolution No. 11 set out in the Circular.

Signed this __ day of __ 2026

Signature(s) (Note 4): ________

Notes:

1. Full name(s) and address(es) (as shown in the register of members of H Shares) to be inserted in BLOCK CAPITALS.
2. Please insert the number of H Shares registered in your name(s). If no number is inserted, this form of proxy will be deemed to relate to all the H Shares registered in your name(s).
3. IMPORTANT: If you wish to vote for any resolution, tick in the box marked "For". If you wish to vote against any resolution, tick in the box marked "Against". If you wish to abstain from voting on any resolution, tick in the box marked "Abstain". Any abstain vote at the AGM shall be disregarded as voting rights for the purpose of calculating the result of that resolution, but will be counted in the total number of voting shares. If you wish to vote only part of the H Shares in respect of which the proxy is so appointed, please state the exact number of H Shares in lieu of a tick in the relevant box. A tick in the relevant box indicates that the votes attached to all the H Shares to which this form relates will be cast accordingly. Unless you have indicated otherwise in this form, your proxy will also be entitled to vote at his discretion on any resolution properly put to the AGM other than those referred to in the notice convening the AGM.
4. This proxy form must be signed by you or your attorney duly authorized in writing or, in the case of a corporation, must either be executed under its common seal or under the hand of an officer or attorney duly authorized. Any alteration made to this form of proxy must be initialed by the person(s) who signs it.
5. In case of joint holders, the vote of the joint holder whose name stands first in the register of members of H Shares and who tenders a vote, whether in person or by proxy, will be accepted to the exclusion of the votes of other joint holder(s), and for this purpose seniority shall be determined by the order in which the names stand in the register of members of H Shares in respect of such joint holding.
6. In order to be valid, this form of proxy together with the power of attorney 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 at least 24 hours before the AGM (no later than 10:00 a.m. on Tuesday, June 9, 2026).
7. Completion and delivery of this form of proxy will not preclude you from attending and voting at the AGM if you so wish.
8. All references to date and time herein refer to Hong Kong date and time.
9. The description of the resolutions is by way of summary only. The full text appears in the notice convening the AGM, which is set out in the Circular.

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 AGM 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 authorized 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 Tricor Investor Services Limited at the above address.