YSB Inc. — M&A Activity 2026

Mar 23, 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.

YSB Inc.

藥師幫股份有限公司

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 9885)

UPDATES ON THE ACQUISITION OF THE TARGET COMPANY INVOLVING ISSUE OF CONSIDERATION SHARES UNDER GENERAL MANDATE

References are made to the announcements of YSB Inc. (the "Company", together with its subsidiaries and consolidated affiliated entities, the "Group") dated 15 October 2024, 28 October 2024, 26 November 2024, and 14 January 2025 (the "Announcements"), in relation to, among others, the acquisition of the Target Company involving issue of consideration shares under general mandate. Terms used herein shall have the same meanings as defined in the Announcements unless otherwise stated.

The Board is pleased to provide the following updates on the latest status of the Acquisition and the Target Group:

1. The Group has effectively advanced the acquisition and consolidation of the Target Group, with resource reuse and channel synergy continuously translating into concrete results, in line with the expectations of the Group at the time of the Acquisition;
2. In 2025, both of the CBOR Growth Rate and Net Profit of the Target Group reached the annual performance targets set at the time of the Acquisition, demonstrating a robust growth momentum;
3. The 2025 performance targets of Part I Contingent Consideration have been successfully achieved. There has been no material adverse change which occurred after the date of the Agreement and continuing at the time of the completion of 2025 performance targets of Part I Contingent Consideration which adversely affected the business of the Target Group;
4. All the key managers have remained with the Target Group and continued to devote themselves to the Target Group's continued growth; and

---

1. Accordingly, as of the date of this announcement, a total of 2,475,547 Consideration Shares, as the Part I Contingent Consideration payable in 2025, were allotted and issued to the Founder Sellers (and/or its nominee(s)).

The above fully demonstrated that this strategic acquisition by the Group has significant synergistic value in expanding market share, optimising supply chain costs, and enhancing service capabilities.

As at the time of publication of this announcement, the Company has issued the results of the Group for the year ended 31 December 2025. For details of the annual results of the Group for the year ended 31 December 2025, Shareholders and potential investors of the Company could refer to the annual results announcement of the Company.

The Company will make further announcement(s) in relation to the Acquisition as and when appropriate. Shareholders and potential investors are reminded to exercise caution when dealing in the Shares of the Company.

By order of the Board

YSB Inc.

Mr. Buzhen Zhang

Chairman and executive Director

Hong Kong, 23 March 2026

As of the date of this announcement, the Board comprises Mr. Buzhen Zhang and Mr. Fei Chen as executive Directors, Mr. Ziyang Zhu as non-executive Director, and Ms. Rong Shao, Mr. Sam Hanhui Sun and Mr. Hongqiang Zhao as independent non-executive Directors.

• 2 -