• GiantStep reported no material information to disclose regarding unusual stock trading activity in its Oct. 21, 2026, response.
• The response addressed the Korea Exchange's Oct. 20, 2026, disclosure inquiry.

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. GiantStep 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: 20261021900421), on October 21, 2026, and is solely responsible for the information contained therein.