Sinopec Oilfield Service Corporation (Sinopec SSC) has issued a proxy form for its first H-shareholders meeting for 2026, set for 22 May 2026 at 10:15 a.m. in Conference Room 7, 3rd Floor, Beijing Kuntai Royal Hotel, Chaoyang District, Beijing, PRC.

The agenda lists one special resolution: authorising the Board to repurchase the company’s domestic shares and/or overseas-listed foreign shares. Shareholders may vote “For,” “Against” or “Abstain”; unticked items will be decided at the proxy’s discretion, and abstentions will be counted in the total vote tally.

H-shareholders may appoint the meeting chairman or another individual as proxy. Completed proxy forms, together with notarised powers of attorney or other authorisation documents, must be lodged with Computershare Hong Kong Investor Services Limited or the company’s business address no later than 10:15 a.m. on 21 May 2026 (Hong Kong time).

Identification documents and the signed proxy form are required for proxy attendance. The proxy materials should be read in conjunction with the circular related to the 2025 annual general meeting.