On 02 June 2026, Sinopec Oilfield Service Corporation (SINOPEC SSC) submitted its monthly return for the period ended 31 May 2026, indicating no changes to either its authorised or issued share capital.

Authorised Share Capital • A-shares: 13.55 billion shares with a par value of RMB 1.00 each, listed on the Shanghai Stock Exchange. • H-shares: 5.41 billion shares with a par value of RMB 1.00 each, listed on the Hong Kong Stock Exchange. • Total authorised share capital remained at RMB 18.96 billion.

Issued Share Capital and Treasury Shares • Issued A-shares: 13.55 billion; issued H-shares: 5.41 billion. • The company held no treasury shares in either class. • No share issuances, cancellations, conversions, or repurchases occurred during the month.

Public Float Compliance • Public float for H-shares stood at 14.85 %, comfortably above the 5 % minimum required for PRC issuers with other listed shares. • The company confirmed full compliance with Main Board Rule 13.32D(1).

Corporate Actions • The filing reported no outstanding share options, warrants, convertible securities, or other agreements that could alter the share count. • No Hong Kong Depositary Receipts are in issue.

Governance Confirmation • The company secretary affirmed that all listing rule, legal, and procedural requirements continue to be met with respect to its share capital.

Overall, SINOPEC SSC maintained a stable capital structure throughout May 2026, with sufficient public float and no equity-related corporate actions recorded.