Ryuk-Il C&S CEO Gu Ja-ok Reports Decrease in Specific Securities by 384,468 Shares Due to Expiration of Convertible Bond Call Option

As of the report base date July 14, 2026, CEO Gu Ja-ok's ownership ratio of specific securities decreased from 42.14% to 40.47%, a drop of 1.67 percentage points.
The decrease is due to the expiration of the call option contract related to the 3rd convertible bond signed in 2024, which lapsed on January 10, 2026, eliminating 384,468 shares of rights.
While the expiration removes the potential for future share acquisition through this option, existing common share holdings remain unchanged and no new funding or dilution occurred.
This is a routine periodic ownership report with no material financial shock or change in control risk.
[AI Summary]This filing is a routine disclosure of changes in a major shareholder's specific securities, primarily the expiration of a convertible bond call option. No capital raising or dilution is involved, and the impact on shareholder value is minimal.