• Cho Hyun-joon increased his stake in Hyosung Heavy Industries to 10.03% from 10%.
• He bought 1,905 common shares through an after-hours trade on October 21, 2026, bringing his holdings to 934,810 shares.

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. Hyosung Heavy Industries Corporation 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: 20261026000231), on October 26, 2026, and is solely responsible for the information contained therein.