Duoback heir Jeong Kwan-young stake drops to 0% in voting rights disclosure after inheritance transfer

• Duoback’s voting-rights disclosure shifted as controlling shareholder Jeong Kwan-young’s stake moved to his spouse via inheritance.
• Jeong’s reported holding fell to 0 shares from 5,216,710 shares, equal to 43.59%, as of Sept. 18, 2026.
• The filing cites Jeong’s death on Aug. 17, 2026; the share transfer was registered on Sept. 18, 2026.

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. Duoback 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: 20260928000061), on September 28, 2026, and is solely responsible for the information contained therein.