BeOne Medicines Ltd. Officer Stock Sale for Tax Withholding

This Form 4 filing reports that Henry Lee Chan, SVP and General Counsel of BeOne Medicines Ltd., sold 871 American Depositary Shares (ADS) representing approximately 11,323 ordinary shares on June 8, 2026. The sales were executed at weighted average prices of $270.2362 and $271.2575 per ADS, generating total proceeds of approximately $235,500. The transactions were mandatory sales to cover tax withholding obligations related to the vesting of restricted share unit awards granted to the officer. Following these sales, the officer still holds 307,047 ordinary shares directly. The filing includes footnotes detailing that the sales were executed pursuant to tax withholding provisions in the award agreement and that the shares were sold in multiple transactions within specific price ranges.