Disclosure Date: July 17, 2026 Announcement Date: July 16, 2026 Announcement Time: 17:35:34 Company Code: 3504 Company Name: YMTC Holding Subject: Announcement of Upcoming Online Investor Briefing on July 24 Applicable Clause: Clause 12 Event Date: July 24, 2026

Details: In accordance with Clause 4, Subsection XX, Item 12: Event Date: July 24, 2026

1. Date of Investor Briefing: July 24, 2026 2. Time of Investor Briefing: 3:00 PM 3. Location: Online investor briefing via webcast 4. Briefing Highlights: Financial and business report for the first half of 2026 5. Additional Notes: None

For complete financial and business information, please visit the public information observation station under the 'Investor Briefings' section or the 'Investor Presentation' category.

FACT BOX

  • Source: PR Times
  • Category: Event