Uni-Bio Science Group Limited — Proxy Solicitation & Information Statement 2026

Apr 27, 2026

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this notice, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this notice.

聯康集團

Uni-Bio Science

UNI-BIO SCIENCE GROUP LIMITED

聯康生物科技集團有限公司*

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 0690)

NOTICE OF EXTRAORDINARY GENERAL MEETING

NOTICE IS HEREBY GIVEN that the extraordinary general meeting (“EGM”) of Uni-Bio Science Group Limited (“Company”) will be held at 11:00 a.m. on Tuesday, 26 May 2026 at Unit 502, 5/F, No. 20 Science Park East Avenue, Hong Kong Science Park, Shatin, New Territories, Hong Kong for the following purposes:

ORDINARY RESOLUTIONS

1. To consider and, if thought fit, pass with or without amendments, the following resolution as an ordinary resolution:

“THAT subject to and conditional upon The Stock Exchange of Hong Kong Limited (“Stock Exchange”) granting the listing of and permission to deal in such number of shares of the Company (“Shares”) which may fall to be allotted and issued pursuant to the exercise of the share options which may be granted under the new share option scheme of the Company (“New Share Option Scheme”), a copy of which is tabled at the EGM and signed by the chairman of the EGM for the purpose of identification, representing the Scheme Mandate Limit (as defined in the New Share Option Scheme), the New Share Option Scheme and the Scheme Mandate Limit, representing an amount up to 10% of the total number of Shares in issue (excluding treasury shares) as at the date of passing of this resolution, be and are hereby approved and adopted and the board of directors of the Company (“Directors”) or a committee thereof be and is

• For identification purposes only

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hereby authorised to grant options and to allot, issue and deal with the Shares pursuant to the exercise of any option granted thereunder and to take all such acts and enter into all such transactions, arrangements and agreements as they may consider necessary or expedient to implement or give full effect to the New Share Option Scheme, including without limitation:

(i) to administer the New Share Option Scheme at its absolute discretion to grant options to subscribe for Shares in accordance with the rules of the New Share Option Scheme;

(ii) to modify and/or amend the New Share Option Scheme from time to time provided that such modification and/or amendment is effected in accordance with the provisions of the New Share Option Scheme relating to modification and/or amendment and the requirements of the Rules Governing the Listing of Securities on the Stock Exchange;

(iii) to allot, issue, and deal with from time to time such number of Shares as may be required to be issued pursuant to the exercise of options under the New Share Option Scheme in accordance with the rules of the New Share Option Scheme and subject to the Rules Governing the Listing of Securities on the Stock Exchange and in each case, subject to the Scheme Mandate Limit and, where applicable, the Service Provider Sublimit (as defined in the New Share Option Scheme); and

(iv) to take all such steps as may be necessary, desirable or expedient to carry into effect the New Share Option Scheme."

1. To consider and, if thought fit, pass with or without amendments, the following resolution as an ordinary resolution:

“THAT the existing share option scheme of the Company adopted on 26 September 2016 (“Existing Share Option Scheme”) be and is hereby terminated upon the New Share Option Scheme coming into effect, without prejudice to the rights and benefits of and attached to any outstanding options which, if any, have been granted under the Existing Share Option Scheme prior to the date of the passing of this resolution.”

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1. To consider and, if thought fit, pass with or without amendments, the following resolution as an ordinary resolution:

“THAT conditional upon the passing of resolution numbered 1 above, the Service Provider Sublimit, representing 1% of the Shares in issue (excluding treasury shares) as at the date of passing of this resolution, be and is hereby approved and adopted and the board of Directors or a committee thereof be and is hereby authorised to take all such steps and attend all such matters, approve and execute (whether under hand or under seal) such documents and do such other things, for and on behalf of the Company, as it may consider necessary, desirable or expedient to effect and implement the Service Provider Sublimit.”

Yours faithfully
On behalf of the Board
Uni-Bio Science Group Limited
Kingsley Leung
Chairman and Executive Director

Hong Kong, 28 April 2026

Registered office:
Cricket Square
Hutchins Drive
P.O. Box 2681
Grand Cayman, KY-1111
Cayman Islands

Head office and principal place of business in Hong Kong:
Unit 502, 5/F
No. 20 Science Park East Avenue
Hong Kong Science Park
Shatin
New Territories
Hong Kong

Notes:

1. In order to ascertain the entitlement to attend and vote at the meeting convened by the above notice (“EGM”), the register of members of the Company will be closed from Wednesday, 20 May 2026 to Tuesday, 26 May 2026, both days inclusive, during which period no transfer of Shares of the Company will be registered. In order to qualify for the entitlement to attend and vote at the EGM, all transfer documents of Shares accompanied by the relevant shares certificates must be lodged with the Company’s branch share registrar and transfer office in Hong Kong, Tricor Investor Services Limited at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong by 4:30 p.m. (Hong Kong time) on Tuesday, 19 May 2026 for registration.

2. A member of the Company entitled to attend and vote at the EGM shall be entitled to appoint another person as his/her/its proxy to attend and vote instead of him/her/it. A member who is the holder of two or more Shares of the Company may appoint more than one proxy to represent him/her/it and vote on his/her/its behalf at the EGM. A proxy need not be a member of the Company.

3. In the case of joint holders of Shares, any one of such joint holders may vote, either in person or by proxy, in respect of such Share as if he/she/it were solely entitled thereto, but if more than one of such joint holders are present at the EGM, personally or by proxy, that one of the said persons so present whose name stands first in the register in respect of such Shares shall alone be entitled to vote in respect thereof.

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1. In order to be valid, the form of proxy must be in writing including electronic or otherwise, as the Board may determine and in the absence of such determination, shall be in writing, which may include electronic writing signed by the appointer or of his attorney duly authorised in writing, or if the appointer is a corporation, either under seal, or signed by an officer or attorney duly authorised, and must be deposited with the Company's branch share registrar and transfer office in Hong Kong, Tricor Investor Services Limited at 17/F, Far East Finance Centre, 16 Harcourt Road, Hong Kong (together with the power of attorney or other authority, if any, under which it is signed or a certified copy thereof) by 11:00 a.m., on Friday, 22 May 2026 or not less than 48 hours before the time appointed for the holding of the adjourned EGM (as the case may be).

2. Delivery of an instrument appointing a proxy should not preclude a member from attending and voting at the EGM or any adjournment thereof and in such event, the instrument appointing a proxy shall be deemed to be revoked.

3. As required under the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited, all resolutions as set out in this notice to be put to vote at the EGM will be decided by way of poll.

As at the date of this notice, the Board consists of four executive Directors, namely Mr. Leung Kingsley (Chairman), Mr. Chen Dawei (Vice-Chairman), Mr. Zhao Zhi Gang (Chief executive) and Dr. Wen Yalei (Chief Operating Officer), two non-executive Directors, namely Mr. Yau Kwok Wing Tony and Ms. Zhang Qing and three independent non-executive Directors, namely Mr. Chow Kai Ming, Mr. Ren Qimin and Mr. Ma Qingshan.

This notice, for which the Directors collectively and individually accept full responsibility, includes particulars given in compliance with the Listing Rules for the purpose of giving information with regard to the Company. The Directors, having made all reasonable enquiries, confirm that to the best of their knowledge and belief the information contained in this notice is accurate and complete in all material respects and not misleading or deceptive, and there are no other matters the omission of which would make any statement herein or this notice misleading.

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