• COSL disclosed its eight-member board and committee assignments on October 23, 2026, including three independent nonexecutive directors.
• Chairman and CEO Liu Jianzhong chairs the Strategy Investment and ESG Committee and serves on the Nomination Committee.
• Zhao Lijuan chairs the Audit Committee and serves on the other three board committees.
• Guo Linguang chairs the Remuneration and Assessment Committee and serves on the other three board committees.
• Yao Xin chairs the Nomination Committee and serves on the other three board committees.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. COSL - China Oilfield Services Limited published the original content used to generate this news brief via IIS, the regulatory disclosure system operated by the Hong Kong Stock Exchange (HKex) (Ref. ID: HKEX-EPS-20261023-12381142), on October 23, 2026, and is solely responsible for the information contained therein.