Item Departure Item Other On March 27, 2026, the Board of Directors of Yunhong Green CTI Ltd. (the “ Company”) appointed Fred H. F. Chak as a Director. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: YUNHONG March 31, 2026 GREEN CTI LTD. ───────────────────────────────────────────────────────────── By: /s/ Name: Jana Title: Chief