Sinopec Oilfield Service Corporation (stock code: 01033), listed in Hong Kong and on the Shanghai Stock Exchange (A shares stock code: 600871), published its monthly return for the period ended 28 February 2026. The total authorized share capital remained at 18.96 billion shares, par value RMB 1 each, with no changes during the reporting month.

The company maintained 13.55 billion issued A shares and 5.41 billion issued H shares, with zero treasury shares on both markets. It confirmed compliance with the applicable 5% public float threshold, noting that 14.85% of its H shares in issue were publicly held during the reporting period. There were no new share issuances, warrants, share options, or convertible securities.