Tranche Update on Sigong Tech Co., Ltd.'s Equity Buyback Plan announced on March 10, 2022.

Sigongtech Co., Ltd. is a Korea-based company engaged in the cultural exhibition business. The Company's activities include the planning, design, building and interior design of science museums, natural history museums, display exhibition halls, theme parks, public information museums, memorial halls, expositions, convention centers and others, as well as the provision of theater and screen systems, multimedia systems, preservation systems and others. In addition, it engages in the real estate rental business. The Company supplies its products within domestic market and to overseas markets.