Mr. Daithi Mac Gearailt reports

TRAILBREAKER COMMENCES MAIDEN DRILL PROGRAM AT ITS 100% OWNED, DISTRICT-SCALE ATSUTLA GOLD PROJECT, BRITISH COLUMBIA

Trailbreaker Resources Ltd. has commenced its maiden drill program at the company's 100-per-cent-owned, 300-square-kilometre (km) Atsutla gold project in northwestern British Columbia. The phase 1 drill campaign has been designed to define the subsurface extent of the surface high-grade gold (Au), silver (Ag) and copper (Cu) showings initially discovered at the Highlands zone in 2020. The Highlands zone covers a 2.0 km by 1.5 km area in the western Atsutla gold project region, with quartz veins containing coarse visible gold assaying up to 630 grams per tonne (g/t) Au and 1,894 g/t Ag.

Daithi Mac Gearailt, chief executive officer of Trailbreaker, commented: "Commencing the first-ever drill program at the Highlands zone is a significant milestone for Trailbreaker and a testament to the systematic exploration work our team has carried out at Atsutla since 2020. From initial discovery through surface mapping, sampling and now diamond drilling, the project has matured into one of the most compelling high-grade gold targets in our portfolio. The Highlands gold system sits within a much larger mineralized corridor and we look forward to the results of this campaign as we advance toward defining the full potential of the Atsutla gold project."

Highlands zone drill target

Initial drilling will target the Highlands zone, where the highest assay grades and greatest density of gold-bearing quartz veins have been mapped on the property to date. Surface sampling has identified quartz veins from 10 to 60 centimetres (cm) wide containing coarse visible gold at surface and assaying up to 630 g/t Au and 1,894 g/t Ag. Veins appear to be located within a shallow-dipping shear zone cutting granodiorite and traced on surface for over one km. The planned drill program will consist of multiple drill holes testing the geometry, continuity and precious metal grades along a 600-metre strike length of the auriferous shear zone exposed at surface.

Mineralization at the Highlands zone is interpreted to be part of a much larger system (Atsutla West), which includes the Christmas Creek and Snook zones. Combined, these zones cover an area of 5.0 km by 4.3 km. Trailbreaker's technical team interprets the shear structure delineated at the Highlands zone to be continuous, with similar auriferous structures identified at the other zones within Atsutla West. This supports the district-scale potential of the project and provides numerous drill-ready targets for a planned phase 2 campaign.

The company anticipates this preliminary drill program will improve the understanding of mineralization controls and the overall deposit model at the Highlands zone, to support the design of future, more targeted drill campaigns.

Other future drilling in 2026

Upon completion of the Highlands drill program, Trailbreaker will commence drilling at the Swan zone, a Cu-Au-Ag porphyry target located 26 km to the east. In September, 2026, Trailbreaker plans to drill Cu-Au porphyry targets at the Coho property, located 30 km northwest of the Mt. Milligan mine in central British Columbia. For further details of these programs, see the May 25, 2026, news release.

More about the Atsutla gold project

The Atsutla gold project is centred over the regional-scale Teslin-Thibert fault system, which marks the contact between the Quesnel and Cache Creek terranes. Gold mineralization is associated with Mesozoic batholitic intrusions that are the predominant geological unit on the property. Since discovery in 2020, Trailbreaker has outlined five significant zones of gold mineralization on the property, across a span of 26 kilometres. These are:

• Highlands zone: A 2.0 km by 1.5 km area in the western Atsutla gold project region, with veins containing coarse visible gold assaying up to 630 g/t Au and 1,894 g/t Ag;
• Christmas Creek zone: Gold-bearing quartz veins 1.5 km east of the Highlands zone, with rock samples assaying up to 102 g/t Au and 524 g/t Ag;
• Snook zone: High-grade veins 3.5 km northeast of the Highlands zone, with rock samples assaying up to 53.3 g/t;
• Willie Jack zone: 1.25 km long gold-in-soil anomaly with soil samples assaying up to 3.77 g/t Au and rock samples up to 9.9 g/t Au;
• Swan zone: A Cu-Au-Ag porphyry target defined by a 1.5 km x 1.5 km multielement soil geochemical anomaly (Au-Cu-Ag-As-Mo-Sb-Bi (gold-copper-silver-arsenic-molybdenum-antimony-bismuth)), with rock grab samples grading up to 11.7 g/t Au, 212 g/t Ag and 0.81 per cent Cu. The geochemical anomaly is coincident with a 2.1 km by 1.4 km donut-shaped chargeability high (defined by a 2024 induced polarization survey), as well as a zone of elevated potassium marked by a magnetic low signature indicated from a 2024 airborne magnetic and radiometric survey.

About Trailbreaker Resources Ltd.

Trailbreaker Resources is a mining exploration company focused primarily on mining-friendly British Columbia and Yukon, Canada. Trailbreaker is committed to continuous exploration and research, allowing maintenance of a portfolio of quality mineral properties which in turn provides value for shareholders. The company has an experienced management team with a proven record as explorers and developers throughout Yukon, British Columbia, Alaska and Nevada.

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