China Oilfield Services Limited (CHINA OILFIELD, 02883) has issued a notice convening its 2025 Annual General Meeting for 10:00 a.m. on 22 May 2026 at Room 311, Main Building of COSL, Yanjiao Economic & Technological Development Zone, Hebei Province, PRC. Shareholders recorded on 22 May 2026 will be eligible to attend and vote; the H-share register will be closed from 19 May to 22 May 2026.

Seven ordinary resolutions will be tabled, including: • approval of the audited financial statements and auditor’s report for the year ended 31 December 2025; • approval of the 2025 profit-distribution and final-dividend plan; • acceptance of the Board of Directors’ 2025 report; • re-appointment of external auditors; • approval of a US-dollar loan extension for wholly-owned subsidiary COSL Middle East FZE, with a Company guarantee; • adoption of a Remuneration Management System for directors and senior management; • approval of the 2026 remuneration plan for directors.

Three special resolutions will also be presented: 1. a blanket guarantee arrangement covering wholly-owned subsidiaries; 2. a general mandate authorising the Board to issue, allot or transfer H shares of up to 20% of the outstanding H-share float (excluding treasury shares) during the mandate period; 3. a general mandate authorising the Board to buy back up to 10% of outstanding A shares and up to 10% of outstanding H shares (excluding treasury shares). Both the issuance and buy-back mandates will lapse at the earlier of the 2026 AGM, 12 months from approval, or any shareholder revocation.

For the proposed 2025 final dividend, the H-share register will be closed from 11 June to 16 June 2026. Share transfers must be lodged by 4:30 p.m. on 10 June 2026 to qualify for dividend entitlement.

All resolutions will be decided by poll in accordance with Hong Kong Listing Rules. Shareholders may appoint proxies, and identification will be required for meeting entry.