Sinopec Oilfield Service Corporation (Sinopec SSC, HKEX: 01033) reported no changes in its share structure for April 2026, maintaining both authorised and issued share capital levels across A- and H-share classes.

Total authorised and registered share capital remained at 18.96 billion shares with a par value of RMB 1.00 each. This comprises: • 13.55 billion A-shares listed on the Shanghai Stock Exchange; • 5.41 billion H-shares listed on The Stock Exchange of Hong Kong.

Issued shares were unchanged at the end of April: • A-shares in issue (excluding treasury shares): 13.55 billion; • H-shares in issue (excluding treasury shares): 5.41 billion. No treasury shares were recorded.

The company confirmed compliance with Hong Kong’s public-float rules. Public shareholders held 14.85 % of the issued H-share class—comfortably above the 5 % minimum threshold required for PRC issuers with multiple share classes.

During the month, Sinopec SSC reported no new share options, warrants, convertibles, or other equity-linked instruments, and no share repurchases or cancellations.

The monthly return was filed on 6 May 2026 by Company Secretary Shen Zehong, affirming adherence to all relevant regulatory and listing obligations.