Sirnaomics Ltd. — Governance Information 2026

Apr 10, 2026

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, 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 announcement.

Sirnaomics Ltd.

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 2257)

PROPOSED AMENDMENTS TO THE EXISTING MEMORANDUM AND ARTICLES OF ASSOCIATION AND ADOPTION OF THE NEW MEMORANDUM AND ARTICLES OF ASSOCIATION

This announcement is made by Sirnaomics Ltd. (the "Company") pursuant to Rule 13.51(1) of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited (the "Listing Rules").

The board (the "Board") of directors (the "Director(s)") of the Company resolved to propose to: (i) amend the fifth amended and restated articles of association of the Company adopted by special resolution passed on August 7, 2024 (the "Memorandum and Articles of Association") for the purpose of, among others, bringing the Memorandum and Articles of Association in line with the relevant amendments made to the Listing Rules in respect of hybrid general meetings and electronic voting, as well as other housekeeping changes; and (ii) adopt the sixth amended and restated memorandum of association and articles of association of the Company incorporating and consolidating the proposed amendments to the Memorandum and the Articles of Association (the "Proposed Amendments"). The Proposed Amendments and the adoption of the sixth amended and restated memorandum of association and articles of association of the Company are subject to, and will be effective upon the passing of a special resolution by the shareholders of the Company (the "Shareholders") at the forthcoming annual general meeting of the Company (the "AGM").

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A circular containing, among other things, further details of the Proposed Amendments, together with a notice of the AGM will be despatched to the Shareholders in due course.

By order of the Board

Sirnaomics Ltd.

Poon Hung Fai

Chairman and Executive Director

Hong Kong, April 10, 2026

As at the date of this announcement, the Board comprises Dr. Poon Hung Fai as executive Director, Mr. Ouyang Yunlong and Dr. Yin Huijun as non-executive Directors, and Mr. Wong Yu Shan Eugene, Dr. Zhang Peng and Ms. Lo Yee Hang as independent non-executive Directors.

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