Glenstar to conduct geophysical survey at Green Monster

Mr. David Ryan reports GLENSTAR TO CONDUCT COMPREHENSIVE GEOPHYSICAL SURVEY AT GREEN MONSTER PROJECT Glenstar Minerals Inc. has retained Hasbrouck Geophysics Inc., of Prescott, Ariz., to conduct a hybrid-source audio-magnetotellurics survey (HSAMT) at the Green Monster project in southwestern Nevada. Survey data will be acquired at intervals of 50 metres (m) along 13 lines and will be conducted by a three-person field team from Advantage Geophysics Inc., of Phoenix, Ariz., in conjunction with Hasbrouck. Hasbrouck principal Jim Hasbrouck will design the survey, provide in-field and remote field supervision of the Advantage team, then will process, model and interpret the data to prepare the final geophysical report. The data will be processed using sophisticated software that will convert it into two- and three-dimensional cross-sections in depth and/or elevation formats. The complete data set will be interpolated into a rectangular cube and horizonal depth slices, referenced to the surface. The final report will detail the methodology, data acquisition, processing, modelling and interpretation of the data. This fieldwork and data collection is slated to begin in early November. Glenstar chief executive officer Dave Ryan stated: "The HSAMT survey will provide key information and give us a much better understanding of the geophysical structure of the polymetallic zone discovered during the recent phase 1 drill program and will be an invaluable aid to us in planning the priorities for the phase 2 drill program." Project background and recent exploration work The Green Monster property comprises 35 federal lode claims covering approximately 700 acres located in Clark county, Nevada, on the west-trending spur of the Spring Mountains, and is approximately 40 miles southwest of Las Vegas. Until the recent drill program in May of 2025, no drilling was ever conducted on the property, but the company's previous identification of robust nickel-copper with anomalous cobalt from sampling work done in 2022 indicated that several targets were ideal for shallow RC (reverse circulation) drilling (see news releases dated May 28, 2025, and July 16, 2025). Glenstar acquired the Green Monster property and conducted initial groundwork in 2022, which included reconnaissance geologic mapping, surface rock sampling, soil sampling and a drone magnetic survey. Channel sampling across the exposed back of a raise off the main shaft returned 1.18 m of 3.77 per cent Cu (copper), 3.06 per cnet Ni (nickel), 0.21 per cent Co (cobalt) and 6.83 per cent Zn (zinc). These values are well in excess of select dump samples from historical underground workings and represent in-place, vein-style mineralization. Sampling of oxide and sulphide-bearing boulders directly downhill of the patented workings has confirmed the presence of very high zinc (more than 10 per cent) and silver (more than 200 parts per million (ppm)), as well as copper, uranium and lead. (Sampling results provided above were previously published in the Green Monster project National Instrument 43-101 technical report dated June 20, 2023, Section 7.5.) About Glenstar Minerals Inc. Glenstar is a mineral exploration company with a focus on polymetallic minerals. These elements are classified as critical minerals, and are essential in the manufacturing of sophisticated electronics and other vital energy technologies. The company's mission is to leverage its knowledge and connections to explore, acquire and develop critical mineral and energy metal properties throughout the world. Glenstar's shares trade on the Canadian Securities Exchange under the symbol GSTR, on the Frankfurt Stock Exchange under the symbol VO20 and on the OTCQB in the United States under the symbol GSTRF. Robert Marvin, PGeo (Ontario), is the qualified person as defined by National Instrument 43-101 and is the independent consulting geologist for Glenstar Minerals, who has examined the Green Monster and Wildhorse properties on the ground numerous times since 2022 and 2024, respectively. All fieldwork relating to geologic observations and sampling, as reported herein, has been directly overseen by Mr. Marvin, who supervised the preparation of, and has reviewed and approved, the technical information in this news release. We seek Safe Harbor.