Mabpharm Limited (Mabpharm) has scheduled its 2026 Annual General Meeting (AGM) for 2:00 p.m. on Friday, 26 June 2026, at No. 301 Libing Road, Zhangjiang Hi-Tech Park, Pudong New District, Shanghai.

Key items on the AGM agenda include:

1. 2025 Financial Statements • Shareholders will receive and consider the audited consolidated financial statements and accompanying directors’ and auditors’ reports for the year ended 31 December 2025.

2. Board Composition and Remuneration • Re-election of four executive directors—Mr Li Yunfeng, Mr Tao Jing, Dr Hou Sheng—and one independent non-executive director, Mr Leung, Louis Ho Ming. • Authorisation for the board to determine directors’ remuneration.

3. Auditor Re-appointment • Proposal to re-appoint Ernst & Young as external auditor and authorise the board to fix its remuneration.

4. Share Repurchase Mandate • Directors seek a general mandate to repurchase up to 10% of Mabpharm’s issued share capital, equivalent to a maximum of 412.41 million shares, subject to prevailing regulations. • The authority will remain effective until the earlier of: (i) the conclusion of the next AGM, (ii) the expiry of the statutory period for holding the next AGM, or (iii) revocation by shareholders.

5. Share Issuance Mandate • Directors seek a separate mandate to allot, issue or deal with additional shares up to 20% of the company’s issued share capital, excluding any treasury shares. • An extension is proposed to increase this limit by the number of shares repurchased under the buyback mandate, capped at an additional 10% of issued shares.

6. Amendments to Constitutional Documents • Shareholders will vote on the adoption of an amended and restated Memorandum and Articles of Association to replace the existing version.

Administrative Details • All resolutions will be decided by poll. • The share register will close from 23 June 2026 to 26 June 2026 (both days inclusive); only shareholders on record as of 26 June 2026 may vote. • Proxy forms must be lodged with Computershare Hong Kong Investor Services Limited by 2:00 p.m. on 24 June 2026.

The notice was issued in Hong Kong on 27 April 2026 and signed by Chairman Mr Jiao Shuge.