Mr. Patrick Cruickshank reports

THISTLE RESOURCES ANNOUNCES CERTIFIED ASSAYS UP TO 14.40% ANTIMONY AND 7.59 OZ SILVER FROM ITS BRUNSWICK ANTIMONY PROJECT TRENCH PROGRAM

Thistle Resources Inc. has released certified assay results of up to 14.40 per cent antimony and 7.59 ounces silver from trench sampling at its flagship Brunswick antimony project in the world-famous Bathurst mining camp, New Brunswick, Canada. Results were received from ALS Global (certificates MN26255585 and MN26272904) for 11 samples collected during the company's 2026 trenching program.

Highlights:

• 14.40 per cent Sb in sample TRG-SB-001 -- accompanied by 1.99 oz Ag;
• 7.59 oz (236 grams per tonne) Ag in sample TRG-SB-002 -- accompanied by 4.24 per cent Sb;
• Results confirm a high-grade antimony-silver association, distinguishing Thistle's Brunswick antimony project from other North American antimony systems;
• This never drilled project lies adjacent to the world-famous Brunswick No. 12 on its eastern claim boundary;
• Bedrock trench mapping and channel sampling are under way to define the strike of the mineralized granite sediment contact and guide drill targeting.

Eleven trench samples of freshly exposed material were collected along the edge of trench area No. 1. The samples represent various styles of antimony mineralization, including disseminations, massive blebs and quartz-vein-associated masses.

Gary Lohman, PGeo, vice-president, exploration, and director, stated: "We are very pleased to have the program under way. This trenching campaign is designed to uncover the granite-sediment contact -- the boundary that hosts the antimony-silver mineralization. Previous sampling identified various styles of mineralization, mostly associated with extensive silicification and quartz veining, typical of a hydrothermal system.

"While the project shares some similarities with Lake George, the Brunswick antimony project stands out for the presence of high-grade silver in the system, accompanied by lesser gold, lead and zinc, with previous silver assays returning up to 1,300 g/t Ag. Being mineralogically complex and having already demonstrated exceptional assays for antimony, silver and local gold, we very much look forward to advancing the 2026 program and defining this unique occurrence. Once the trenches are mapped and channel sampled, the structural data will help define the strike of the contact, enabling us to best target our drilling. In mid-June, Jim Walker, PGeo, PhD, visited the site to assist in designing our program and to provide insight into the local geology, particularly the known antimony deposits of New Brunswick."

Patrick J. Cruickshank, MBA, president, chief executive officer and director, stated: "We are excited to deliver these high-grade certified results from our Brunswick antimony project trench program. Once again, the results confirm a dynamic system -- and a confirmed relationship between high-grade antimony and high-grade silver, distinguishing us from other antimony systems in North America. Antimony is a designated critical mineral in both Canada and the United States, and North American supply is scarce. This is an exciting result for our shareholders and for the Bathurst mining camp."

Analysis and quality assurance/quality control

All samples were submitted to ALS Global in Moncton, an independent commercial laboratory, for both sample preparation and assaying. Samples submitted through ALS are run through standard preparation methods and analyzed using Code ME-ICP61a, a four-acid digestion followed by ICP-AES analysis. Gold analysis is performed by standard fire assay (Au-AA23) using a 30-gram sample with an AA finish. Overlimit assays for Ag and Sb are performed using code OG62, a four-acid leach with an ICP-AES or AA finish. Antimony in samples TRG-SB-001 and TRG-SB-005 exceeded the upper reporting limit of ME-ICP61a and was redetermined by ore grade method ME-OG62, reported under certificate MN26272904. ALS undertakes its own QA/QC protocols, including coarse and pulp duplicate analysis, to ensure proper sample preparation and equipment calibration.

Thistle's QA/QC program includes regular insertion of CRM standards, duplicates and blanks into the sample stream with a stringent review of all results. QA/QC and data validation were performed, and no material errors were observed.

Qualified person

The technical and scientific information in this news release has been reviewed and approved by Mr. Lohman, PGeo, chief operating officer and vice-president, exploration, of Thistle, a qualified person as defined by National Instrument 43-101. Mr. Lohman is not independent of the company.

About Thistle Resources Inc.

Thistle is a Canadian precious metal and critical mineral exploration company operating in the world-famous Bathurst mining camp of New Brunswick, one of Canada's most prolific mining districts. The never-drilled Brunswick antimony project offers blue-sky potential -- a high-grade antimony-silver-gold discovery on the eastern flack adjacent to the world-famous past-producing Brunswick No. 12 mine property. At the flagship Middle River gold project, phase 1 and 2 drilling has confirmed gold mineralization from surface to 130 metres along a seven-kilometre trend of mineralized folds, with an untested deeper zone from 400 metres and phase 3 ahead. The portfolio also includes the Middle River volcanogenic massive sulphide, Alba Forks gold and Celtic Highland gold projects. With exploration planned across both flagships in 2026, Thistle is advancing two discovery stories in a single district.

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