Exhibit 99.1

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Total Voting Rights

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Hong Kong, Shanghai & Florham Park, NJ — Tuesday, September 30, 2025: HUTCHMED (China) Limited (“HUTCHMED”) (Nasdaq/AIM:​HCM; HKEX:​13) hereby notifies the market that as at September 30, 2025, the issued share capital of HUTCHMED consisted of 872,148,995 ordinary shares of US$0.10 each, with each share carrying one right to vote and with no shares held in treasury.

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The above figure of 872,148,995 may be used by shareholders as the denominator for the calculations by which they could determine if they are required to notify their interest in, or a change to their interest in, HUTCHMED shares under the Financial Conduct Authority’s Disclosure Guidance and Transparency Rules.

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For illustrative purposes only, the 872,148,995 ordinary shares would be equivalent to 872,148,995 depositary interests (each equating to one ordinary share) which are traded on AIM or, if the depositary interests were converted in their entirety, equivalent to 174,429,799 American depositary shares (each equating to five ordinary shares) which are traded on Nasdaq.

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About HUTCHMED

HUTCHMED (Nasdaq/AIM:​HCM; HKEX:​13) is an innovative, commercial-stage, biopharmaceutical company. It is committed to the discovery and global development and commercialization of targeted therapies and immunotherapies for the treatment of cancer and immunological diseases. Since inception it has focused on bringing drug candidates from in-house discovery to patients around the world, with its first three medicines marketed in China, the first of which is also approved around the world including in the US, Europe and Japan. For more information, please visit: www.hutch-med.com or follow us on LinkedIn.

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