Movement Alert|HBM HOLDINGS-B Rises 5.02% in Regular Trading, Core Pipeline HBM9378 Posts Positive Phase II Interim Data in Asthma and Initiates Phase III

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Yesterday

On September 9, HBM HOLDINGS-B rose 5.02% in regular trading, trading at HKD 15.27 per share, with turnover of approximately HKD 63.46 million.

The rally was driven by partner Windward Bio AG announcing on September 8 that HBM9378/WIN378 achieved positive Phase II interim results in the global Phase II/III POLARIS-1 clinical study for asthma, with Phase III now formally initiated. HBM9378/WIN378 is a fully human ultra-long-acting monoclonal antibody targeting TSLP with a unique dual-epitope binding mechanism. Pharmacokinetic data show a half-life of up to 75 days, supporting a twice-yearly dosing regimen. The Phase III portion is evaluating two dosing regimens versus placebo, with annualized asthma exacerbation rate as the primary endpoint. Safety data showed no treatment-related serious adverse events, with injection-site reactions below 1%.

Additionally, the company's shares were officially included in the Hang Seng Composite Index and became eligible for Shanghai-Hong Kong and Shenzhen-Hong Kong Stock Connect trading from September 7, which is expected to broaden the investor base and enhance liquidity.

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