Sangdeok Seo reduces HeunguOil stake by 2.77%p (7.36%→4.59%)
Major shareholder Sangdeok Seo reduced his stake in HeunguOil from 1,104,183 shares (7.36%) to 687,775 shares (4.59%) via off-block sale on May 13, 2026, a decrease of 416,408 shares (2.77%p).
The disposal price per share was 14,408 won (parentheses indicate disposal price), reported as a simple disposal.
The holding purpose is simple investment, not for influencing management.