Star Royalties Highlights Positive Copperstone Construction Decision and PFS Results by Minera Alamos

May 29, 2026, TORONTO, ON - TheNewswire – Star Royalties Ltd. (“ Star Royalties ”, or the “ Company ”) (TSXV: STRR, OTCQX: STRFF) is pleased to highlight the positive construction decision and results of the Pre‑Feasibility Study (“ PFS ”) announced by Minera Alamos Inc. (“ Minera Alamos ”) (TSXV: MAI, OTCQX: MAIFF) for its 100%-owned Copperstone Gold Project (“ Copperstone ”) in La Paz County, Arizona. The PFS confirms a robust, low‑capital, high‑return underground gold project with initial production expected mid-2027. Star Royalties holds a 4% gold stream on Copperstone. All amounts are in U.S. dollars, unless otherwise indicated. Neither TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this release. Highlights