Zai Lab Limited (再鼎醫藥有限公司 *), stock code 9688, will hold a board meeting on February 26, 2026. During this session, directors are set to review and approve the financial results for the year ended December 31, 2025, which have been prepared in accordance with U.S. GAAP and applicable SEC regulations. If approved, the results will be published on the same day via the Hong Kong Stock Exchange’s website and the company’s own investor relations page.

A teleconference call and webcast to discuss the annual results is planned for February 26, 2026, at 8:00 a.m. U.S. Eastern Time (9:00 p.m. Hong Kong Time). Interested parties may preregister using the links provided on the company’s website. A replay will be available shortly after the event.

Zai Lab Limited expects to issue a separate announcement on or before March 31, 2026, in compliance with Hong Kong Listing Rules. This disclosure will include reconciliations from U.S. GAAP to International Financial Reporting Standards, along with additional information required under local regulations.