CHINA OILFIELD (02883): The CNOOC Limited group has cumulatively increased its holdings by 410,000 A shares and 17.858 million H shares of the company.

CHINA OILFIELD (02883) announced that on September 23, 2026, the Company received notice from the CNOOC Limited group that the CNOOC Limited group increased its holdings of 410,000 A shares of the Company through centralized bidding via the trading system of the Shanghai Stock Exchange, representing approximately 0.01% of the total number of issued shares of the Company, with the amount of the A share increase approximately RMB 4.981 million (excluding taxes and fees); and increased its holdings of 1.85 million H shares of the Company through on-exchange trading via the system of The Stock Exchange of Hong Kong Limited, representing approximately 0.04% of the total number of issued shares of the Company, with the amount of the H share increase approximately RMB 11.9151 million (excluding taxes and fees). Following the implementation of the above increases, the CNOOC Limited group has cumulatively increased its holdings by 410,000 A shares under this increase plan, with the cumulative amount of the A share increase approximately RMB 4.981 million (excluding taxes and fees); and has cumulatively increased its holdings by 17.858 million H shares, with the cumulative amount of the H share increase approximately RMB 92.8968 million (excluding taxes and fees). As of the date of this announcement, the CNOOC Limited group held a total of 2.429 billion shares of the Company, and its proportion of the total number of issued shares of the Company increased from approximately 50.53% before the implementation of this increase plan to approximately 50.91%.