China Oilfield Services to hold Q3 2025 results briefing

China Oilfield Services Limited (COSL) will host a teleconference on October 30, 2025, from 16:30 to 17:30 to discuss its 2025 third-quarter results. The company plans to release its Q3 2025 report on the Shanghai Stock Exchange website on October 29, 2025, ahead of the briefing. This session aims to provide a comprehensive overview of the company's financial performance and operational highlights for the period, addressing questions from investors.

Interested investors can participate by teleconference, with dial-in numbers provided for mainland China (4008 063 263) and Hong Kong ((852) 3018 3602). To join, participants should contact SPRG_COSL@sprg.com.hk or call (852) 2864 4890, (852) 2114 2825, or (852) 2864 4894 to obtain the conference access code.

Questions for the management team can be submitted via email to cosl@cosl.com.cn by 23:59 on October 24, 2025. COSL's management will address commonly raised questions during the teleconference, facilitating direct engagement with the investment community regarding the third-quarter performance and operational outlook.