• Opus One Investment Partnership disclosed a new 7.15% stake in ADBiotech, equal to 2,225,932 voting shares.
• The position was built via an OTC purchase of convertible bonds, then converted into voting shares on Sept. 1, 2026.
• The filing cited passive investment intent.

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. ADBiotech Co. Ltd. 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: 20260923000174), on September 23, 2026, and is solely responsible for the information contained therein.