Tongyang executive Ko Hyun-gu raises stake to 12,750 shares
Tongyang executive Koh Hyun-gu increased his common-share stake to 12,750 shares from 11,750, a net increase of 1,000 shares. The purchase was 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.