Seres Group Co., Ltd. disclosed a Next Day Disclosure Return on 24 April 2026, confirming the on-market buyback of 550,600 A-shares on the Shanghai Stock Exchange the same day.

The shares were repurchased at prices between RMB 90.43 and RMB 91.00, with a volume-weighted average cost of RMB 90.76 per share. Aggregate consideration amounted to RMB 49.97 million. The repurchased shares represent 0.03% of Seres Group’s issued share capital.

The company’s total issued shares remained at 1,633,366,086 as of the close of 24 April 2026. The 550,600 shares are earmarked for cancellation and, pending that process, no treasury shares are held.

The disclosure fulfills Rule 13.25A requirements of the Hong Kong Stock Exchange and Rule 10.06(4)(a) on share repurchases.