Sinopec Oilfield Service Corp. addresses stock volatility, confirms normal operations

Sinopec Oilfield Service Corp. (SSE:600871) reported A-share trading abnormal fluctuations, with its stock price deviation cumulative increase exceeding 20% over three consecutive trading days (October 20, 21, and 22, 2025). The company stated that its production and operations are normal, with no undisclosed material information. The controlling shareholder and actual controller also confirmed no significant matters for disclosure.

In a separate announcement regarding guarantees, Sinopec Oilfield Service Corp. disclosed that as of September 30, 2025, its total external guarantees amounted to RMB28.059 bn, representing 21.8% of its net assets from the latest audited period. The company provided credit guarantees of approximately RMB18.165 bn and performance guarantees of RMB7.94 bn for its wholly-owned subsidiaries, along with $275m in performance guarantees for joint ventures.

The guarantees, including for units with asset-liability ratios exceeding 70%, were approved by the board and shareholders within authorized limits for 2025. The company confirmed that all guarantees are within approved limits and none are overdue.