• Celltrion executive Yang Sung-wook increased his holding by 793 shares to 8,143 as of Oct. 30, 2026.
• He sold 2,722 common shares on Oct. 23 at 198,328 won each.
• On Oct. 26, he exercised stock options for 3,515 common shares at 68,636 won each.

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. Celltrion 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: 20261030000738), on October 30, 2026, and is solely responsible for the information contained therein.