This paper examines the association between ownership structure and the extent of Web disclosure of 1056 listed companies of differential privatization stage in China. Literature suggests that state controlled economies are expected to have restricted forms of information disclosure and blockholder’s equity can reduce the needs for information disclosure. Our results show that state ownership will curtail the extent of Web disclosure in the post-privatization stage and private block shareholding is positively related to Web disclosure for low privatization firms, but not for highly privatized companies. The findings indicate that state and private blockholders have diverse Web reporting policies during ownership evolution and information asymmetry may exist in post-privatization stage. The results suggest that reinforcement of the institutional environment and continuous scrutiny of a company’s reporting practices in the post-privatization stage should be emphasized.