Mr. David Ryan reports

GLENSTAR DRILLING PROGRAM UPDATE AT WILDHORSE PROJECT CURRENTLY UNDERWAY IN NEVADA

The phase 1 reverse circulation drill program at Glenstar Minerals Inc.'s Wildhorse project in Mineral county, Nevada (see news release dated April 14, 2026), is under way, and work is currently focused on the Rattlesnake zone. Drilling began at the Coca Cola zone, and four holes were completed in the target area during week 1 of the planned three-week program. A number of narrow intervals of strong alteration with local copper oxide mineralization were encountered prior to the drill rig being moved to the Rattlesnake zone, which lies approximately 1,600 feet to the northeast of the Coca Cola zone.

Hole RTSRC-1 intersected several multimetre-scale intervals of strong oxide alteration/mineralization from surface to 345 feet. From 345 to 385 feet, a partially oxidized zone of strong sulphide mineralization, quartz veinlets and silicification was intersected. Field-identified sulphide minerals include chalcopyrite and fine-grained silver-grey minerals. The mineralized interval emits a strong odour of hydrogen sulphide. Sulphide abundance is estimated at 5 per cent. Oxide minerals are present on fracture and range in colour from yellow to orange to bright blue.

Hole RTSRC-2 indicates multimetre gossanous orange and red zones are prevalent from surface to 215 feet downhole (150 feet below the surface). From 215 feet to 245 feet, a 30-foot downhole interval returned an intense zone of oxide mineralization where abundant quartz veinlets were intersected. Preliminary conclusions of the drilling at Rattlesnake thus far indicate that the company has intersected the main Rattlesnake mineralized zone in a downdip position located 320 feet east of outcropping mineralized positions.

Project geologist and exploration manager Robert Marvin enthusiastically remarked: "To have intersected such a robust zone of polysulphide mineralization in our first hole at Rattlesnake is very encouraging. It is becoming clear that a well-foliated, fine-grained, grey hornfels formation at Rattlesnake is an excellent mineralization host rock, based on the early visual results of the drill program. This rock type lies in the hangingwall of a thrust fault, which daylights at a polymetallic zone, worked historically by several shallows and declines. Strong quartz veinlet development and sulphide mineralization are contained within and above the thrusted contact. RTSRC-1 intersected 10-plus metres (downhole interval) of strong silicification, veining and partially oxidized sulphide mineralization in a position 105 metres downdip of the historic workings. This validates our target model, and we are hopeful of further success in the remainder of the phase 1 drill program at Rattlesnake."

All observations of intervals of alteration and sulphide mineralization represent downhole intervals, and it should be noted that Glenstar does not have sufficient data to report true intercept widths at this time. The drilling at Wildhorse is expected to continue for another seven to 10 days, at which time all of the samples will be shipped to Paragon Geochemical Inc. in Sparks, Nev., for assay analysis.

Project background

The Wildhorse property is composed of 89 mineral claims, representing 1,780 acres (720 hectares) in Mineral county, Nevada, and was initially targeted after compilation of all available data, including notes of a 1975 field examination contained in the Anaconda Company archives housed at the University of Wyoming. The claims show historical workings that appear to date from the late 1800s and early 1900s. Other claim stakes that the geological team discovered on the property indicate the last time the area was staked was 2011; however, these claims were never registered with the Bureau of Land Management. Preliminary geological assessment of the claims and the area in general indicate there are a series of east-dipping mineralized zones. Initial field examination of the property identified and sampled a quartz veinlet zone containing in excess of one gram per ton gold, 1 per cent copper and 6,100 parts per million of antimony. It was also reported that outcropping zones also contain bismuth and tungsten, which point to a focused intrusive source for the epidote skarn alteration and polymetallic system (see news release dated Feb. 11, 2025).

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.

We seek Safe Harbor.