• Y-Biologics CEO Park Young woo raised his stake to 3,545,022 shares, lifting voting rights to 23.01% as of Oct. 14.
• The holding increased by 2,500 shares from the prior report dated Aug. 5.
• The purchase was made on-market at KRW 7,017 per share.

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. Y-Biologics 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: 20261014000095), on October 14, 2026, and is solely responsible for the information contained therein.