Notice of Stock Split and Submission of Share Certificates

At the Extraordinary General Meeting of Shareholders held on November 12, 2025, the Company resolved to conduct a stock split, dividing one share with a par value of KRW 1,000 into ten shares with a par value of KRW 100 each. Accordingly, all shareholders and pledgees holding the old share certificates are requested to submit their certificates within one month from the day following the date of this notice.

November 12, 2025

ECO DM LAB Co., Ltd.

151-4, Gwahaksaneop 4-ro, Oksan-myeon, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Republic of Korea 28121

CEO Man Soon Yoon