Investment Rating - The report maintains a positive outlook on Zai Lab with a reaffirmed full-year revenue guidance of USD 560-590 million for 2025 [1][5]. Core Insights - Zai Lab reported a net product revenue of USD 109 million in 2Q25, representing a 9% year-over-year increase, with a gross margin of 60.7% [1][5]. - The core product, efgartigimod, achieved sales of USD 26.5 million, up 14% year-over-year and 46% quarter-over-quarter, driven by extended treatment duration and improved market penetration [2][7]. - The company narrowed its net loss to USD 40.7 million from USD 80.3 million in the same quarter last year, with adjusted operating loss improving by 37% year-over-year to USD 34.2 million [1][5]. Financial Performance - The R&D expense ratio decreased to 46.0% of revenue, down 15.3 percentage points year-over-year, while SG&A expenses decreased to 64.6%, down 14.7 percentage points year-over-year [1][5]. - As of the end of 2Q25, Zai Lab had a strong cash position of USD 860 million [1][5]. Key Milestones - Anticipated milestones for 2H25 include the submission of a Biologics License Application (BLA) for bemarituzumab for first-line gastric cancer treatment and a marketing authorization application for tumor treating fields in first-line pancreatic cancer treatment [2][7]. - Initiation of a global registrational study for ZL-1310 monotherapy in second-line extensive-stage small cell lung cancer (ES-SCLC) is also planned [2][7].