Antengene Corporation Limited disclosed a repurchase of 91,500 ordinary shares on 13 July 2026, executed on the Hong Kong Stock Exchange. The transaction was completed at prices ranging from HKD 4.23 to HKD 4.31 per share, resulting in a volume-weighted average cost of HKD 4.29 and an aggregate consideration of HKD 0.39 million.

Following this buyback: • Issued shares (excluding treasury shares) decreased to 678.67 million, representing a 0.0135% reduction. • Treasury stock rose to 780,000 shares. • Total issued shares remained unchanged at 679.45 million, as the repurchased shares are being held in treasury rather than cancelled.

Repurchases to date under the mandate approved on 10 June 2026 now stand at 577,500 shares—0.085% of the company’s issued share count on the mandate date—leaving capacity to repurchase up to 67.35 million additional shares. In accordance with Hong Kong listing rules, Antengene is subject to a moratorium on new share issues or sales of treasury shares until 12 August 2026.