Mr. David Ryan reports

PHASE 2 DRILL PROGRAM COMPLETED AT GREEN MONSTER PROJECT IN NEVADA. VISUAL EVALUATION CONFIRM CONSIDERABLE FRACTURING AND ALTERATION IN THE ROCK

The phase 2 drill program at Glenstar Minerals Inc.'s Green Monster project in Nevada has been completed, and all of the extracted rock was prepared, bagged and sent to ALS Chemex in Vancouver, B.C., for assay analysis.

The final plan for the phase 2 program consisted of six holes at various depths from 500 feet to 585 feet, and angles from vertical to 65 degrees. A track-mounted reverse circulation drill was utilized for this second round of drilling, and preliminary observations by project geologist Bob Marvin in the field indicate that three of the six holes drilled contained highly fractured rock with abundant clay alteration and brightly coloured orange and red oxide minerals and decalcification.

This phase 2 drill program was composed of 3,320 feet over six holes, which were collared at three drill pads. Three holes were drilled at the site of the blind discovery hole that was encountered in the phase 1 drill program that was conducted in May, 2025 (see news release dated May 28, 2025). Two of these holes are considered to be of significant interest while the third hole did not exhibit the same level of fracturing and alteration, but is thought to be of interest nevertheless. One hole was collared approximately 90 metres to the southwest of the discovery hole, and the rock recovered from this hole also indicates substantial fracturing and alteration of the rock with abundant clay alteration and bright orange and red oxide minerals. This hole is also considered to be of significant interest. Visual inspection of the rock from two holes drilled at the initial area of interest is considered to be unremarkable.

Glenstar geologist Bob Marvin stated: "We are extremely pleased with the initial visual evaluation of the six holes drilled during phase 2 of our ongoing drill plan. The fact that three of the six holes drilled showed significant alteration and fracturing, and a fourth hole with good potential as well, continues to support Glenstar's belief that the polymetallic zone we're drilling could represent a significant discovery. Only assays and time will tell."

The phase 1 drill program, which was conducted in May, 2025 (see news release dated July 16, 2025), encountered a new mineralized zone that is approximately 10 metres (32 feet) wide and is centred on a very high-grade zinc occurrence that is greater than 30 per cent, and a significant assay result of up to 177 parts per million of silver (5.7 ounces per ton), 523 ppm of nickel (0.0523 per cent), cobalt up to 91.9 ppm (0.0019 per cent) and copper that is greater than 0.36 per cent according to assay results provided by ALS in Vancouver, B.C. The nickel and cobalt percentages reported are subjectively classified as highly anomalous for the geological structure as well. Mineralization in this hole was intersected at depths from approximately 131 metres (approximately 430 feet) to approximately 142 metres (approximately 465 feet) and occurs in the hangingwall of the Green Monster fault zone (see news release dated July 16, 2025).

Project background and recent exploration work

The Green Monster property is composed of 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 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 that 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 metres of 3.77 per cent copper, 3.06 per cent nickel, 0.21 per cent cobalt and 6.83 per cent 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 (greater than 10 per cent) and silver (greater than 200 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 Over-the-Counter market (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, 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 release.

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