• Director and 10% shareholder Choi Jae won lifted his stake in Clean & Science to 932,000 shares from 925,217.
• Ownership rose to 14.34% from 14.23% as of Sept. 23, 2026.
• Change reflected open-market purchases on Sept. 22-23 totaling 6,783 shares at about 3,203 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. Clean & Science 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: 20260923000452), on September 23, 2026, and is solely responsible for the information contained therein.