• Tongyang executive Koh Hyun-gu raised his common-share stake to 12,750 shares from 11,750, a net increase of 1,000.
• The change came from an on-market purchase settled on Sept. 30, 2026 at KRW 1,151 per share.
• His ownership remained at 0.01% of outstanding shares as of Oct. 7, 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. Tongyang Inc. 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: 20261007000102), on October 07, 2026, and is solely responsible for the information contained therein.