SINOPEC SSC (01033) has issued an announcement stating that the A-shares of SINOPEC Oilfield Service Corporation (the "Company") experienced cumulative closing price deviations exceeding 20% over three consecutive trading days on February 27, March 2, and March 3, 2026. According to the relevant regulations of the Shanghai Stock Exchange Trading Rules, this constitutes an abnormal fluctuation in stock trading.

The production and operations of the Company and its controlled subsidiaries are currently normal. There have been no significant adjustments in the market environment or industry policies, and no substantial fluctuations in production costs or sales. Internal production and operational order remains normal.

As of now, neither the Company, its controlling shareholder, nor its actual controller has any major undisclosed matters requiring announcement. This includes, but is not limited to, major asset restructurings, share issuances, significant transaction-related matters, business reorganizations, share buybacks, equity incentive plans, bankruptcy restructuring, major business collaborations, or the introduction of strategic investors.

As of the date of this announcement, the Company has not identified any media reports or market rumors that could influence its stock trading price, nor is it involved in any hot concept-related matters. No other significant events that could materially affect the Company's share price have been discovered.

Furthermore, the Company's directors, senior management, controlling shareholder, and parties acting in concert did not trade the Company's shares on the secondary market during the period of abnormal trading volatility.