Mason Capital Non-Registered Executive Seong Ji-yong Reports Shareholding Change Due to Capital Reduction and Stock Split


  • Mason Capital non-registered executive Seong Ji-yong disclosed that his shareholding decreased from 65,000 shares to 6,500 shares as of July 10, 2026, via a report on specific securities ownership.
  • This change resulted from a 5-to-1 capital reduction on June 9, 2026, followed by a 2-to-1 stock split on June 19, 2026. The total outstanding shares were adjusted proportionally, leaving his ownership unchanged at 0.03%.
  • This filing is a routine insider ownership update with no new capital raising or dilution impact on existing shareholders.
  • [AI Summary]The insider share change at Mason Capital is a mechanical adjustment due to capital reduction and stock split, with no material effect on the company's capital structure or shareholder value. It is considered a neutral event.

KOSDAQ Filing Information


  • Report on Ownership of Specific Securities by Executives and Major Shareholders
  • Company: Mason Capital (021880)
  • Submission: Seong Ji-yong

  • Shares: 21,218,440
  • Price: 1,609 KRW
  • Market Cap: 34.1 B KRW