• Company to host conference call and webcast on November 6, 2025, at 8:00 a.m. ET (9:00 p.m. HKT)

SHANGHAI & CAMBRIDGE, Mass. / Oct 15, 2025 / Business Wire / Zai Lab Limited (NASDAQ: ZLAB; HKEX: 9688) today announced that it will report its third quarter 2025 financial results and provide recent corporate updates on November 6, 2025, before the opening of U.S. equity markets. The announcement will be followed by a conference call and webcast at 8:00 a.m. ET (9:00 p.m. HKT).

Conference Call and Webcast Information

The live webcast can be accessed by visiting the Company's website at http://ir.zailaboratory.com. Participants must register in advance of the conference call.

Details are as follows:

• Registration link for webcast (preferred): https://edge.media-server.com/mmc/p/svanah67
• Registration link for dial-in: https://register-conf.media-server.com/register/BIc22945ac95b04071a1d7c0d81eb32021

All participants must use the link provided above to complete the online registration process in advance of the conference call. Dial-in details will be in the confirmation email which the participant will receive upon registering. A replay will be available shortly after the call and can be accessed by visiting the Company's website.

About Zai Lab

Zai Lab (NASDAQ: ZLAB; HKEX: 9688) is an innovative, research-based, commercial-stage biopharmaceutical company based in China and the United States. We are focused on discovering, developing, and commercializing innovative products that address medical conditions with significant unmet needs in the areas of oncology, immunology, neuroscience, and infectious disease. Our goal is to leverage our competencies and resources to positively impact human health.

For additional information about Zai Lab, please visit www.zailaboratory.com or follow us at https://x.com/ZaiLab_Global.