On April 22, 2026, the Board of Directors of Yunhong Green CTI Ltd. (the "Company") appointed Fred H.F. Chak, an existing member of the Board, to serve as Chairman of the Board, effective April 27, 2026. Mr. Chak succeeds Gerald D. Roberts Jr., who has served as interim Chairman of the Board since February 17, 2026. Mr. Roberts will continue to serve as a director of the Company.