Trailbreaker Commences Maiden Drill Program At Its 100% Owned, District-Scale ATSUTLA Gold Project, British Columbia

13:45 Uhr  |  The Newswire

June 29, 2026 - Trailbreaker Resources Ltd. (TBK.V) ("Trailbreaker" or "the Company") is pleased to announce the commencement of its maiden drill program at the Company's 100%-owned, 300 km² Atsutla Gold project in northwestern British Columbia (BC). 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 (Figure 1), with quartz veins containing coarse visible gold assaying up to 630 g/t Au and 1,894 g/t Ag.

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Figure 1: High-grade gold occurrences across the Atsutla West region are located within potentially continuous shear structures within a 5.0 km x 4.3 km area (see January 8, 2026 news release).

Daithi Mac Gearailt, CEO 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 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 1 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 x

4.3 km (see Figure 1). 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 BC. For further details of these programs, see the May 25, 2026 news release.

More about the Atsutla Gold project

The Atsutla Gold project is centered 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 kilometers. These are:

• HighlandsZone-A2.0 kmby1.5kmareainthewesternAtsutlaGoldprojectregion,withveins containing coarse visible gold assaying up to 630 g/t Auand 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 multi-element soil geochemical anomaly (Au-Cu-Ag-arsenic [As]-molybdenum [Mo]-antimony [Sb]-bismuth [Bi]), with rock grab samples grading up to 11.7 g/t Au, 212 g/t Ag, and 0.81% Cu. The geochemical anomalyiscoincidentwitha 2.1 km x 1.4 km donut-shaped chargeability high(definedbya2024 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

Trailbreaker Resources is a mining exploration company focused primarily on mining-friendly British Columbia and Yukon Territory, 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 track record as explorers and developers throughout the Yukon Territory, British Columbia, Alaska and Nevada.

ON BEHALF OF THE BOARD

Daithi Mac Gearailt

President and Chief Executive Officer

Carl Schulze, P. Geo., Consulting Geologist with Aurora Geosciences Ltd, is a qualified person as defined by National Instrument 43-101 for Trailbreaker's BC and Yukon exploration projects, and has reviewed and approved the technical information in this release.

Other

For new information about the Company's projects, please visit Trailbreaker's website at TrailbreakerResources.com and sign up to receive news. For further information, follow Trailbreaker's tweets at Twitter.com/TrailbreakerLtd, use the 'Contact' section of our website, or contact us at (604) 681-1820 or at info@trailbreakerresources.com.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Statements

Statements contained in this news release that are not historical facts are "forward-looking information" or "forward-looking statements" (collectively, "Forward-Looking Information") within the meaning of applicable Canadian securities legislation and the United States Private Securities Litigation Reform Act of 1995. Forward-Looking Information includes, but is not limited to, disclosure regarding possible events, conditions or financial performance that is based on assumptions about future economic conditions and

courses of action; expectations regarding future exploration and drilling programs and receipt of related permitting. In certain cases, Forward-Looking Information can be identified by the use of words and phrases such as "anticipates", "expects", "understanding", "has agreed to" or variations of such words and phrases or statements that certain actions, events or results "would", "occur" or "be achieved". Although Trailbreaker has attempted to identify important factors that could affect Trailbreaker and may cause actual actions, events or results to differ materially from those described in Forward-Looking Information, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. In making the forward-looking statements in this news release, if any, Trailbreaker has applied several material assumptions, including the assumption that general business and economic conditions will not change in a materially adverse manner. There can be no assurance that Forward-Looking Information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on Forward-Looking Information. Except as required by law, Trailbreaker does not assume any obligation to release publicly any revisions to Forward-Looking Information contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

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