CNOOC Oilfield Services (02883) A shares experienced abnormal fluctuations in stock trading, and there is no significant undisclosed information that should be disclosed.

CNOOC Oilfield Services (02883) announced that the company's A shares had a cumulative deviation of more than 20% in the closing prices on March 2, 2026 and March 3, 2026, for two consecutive trading days. According to the relevant provisions of the Shanghai Stock Exchange Trading Rules, this constitutes abnormal stock trading fluctuations. After a self-check by the company and written inquiries to the controlling shareholder, it is confirmed that there is no significant information that should have been disclosed but has not been disclosed by the company or its controlling shareholder as of the date of this announcement. Recently, the trading price of the company's stock has fluctuated significantly. Investors are advised to pay attention to the risks of trading in the secondary market, make rational decisions, and invest prudently.