• Kim Joong-Kun’s stake in Bookook Securities rose to 3,660,173 shares, or 35.3%, as of Sept. 23, from 35.29%.
• Increase of 960 shares followed on-market purchases by the filer and a related party.
• Disclosure cites an intent to influence management as the holding purpose.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Bookook Securities Co. Ltd. published the original content used to generate this news brief via DART, the regulatory disclosure system operated by the South Korea Financial Supervisory Service (FSS) (Ref. ID: 20260923000629), on September 23, 2026, and is solely responsible for the information contained therein.