Mr. Robert Cameron reports

ENDURO METALS IDENTIFIES NEW GOLD SKARN IN BEDROCK, EXPANDS 5.5 KM GOLD-COPPER TARGET AT OCTOBER DOME PROJECT, BC

Enduro Metals Corp. has released results from its 2025 sampling program at its 100-per-cent-owned October Dome project in central British Columbia. Strongly mineralized gold skarn has been identified in bedrock, extending a large gold-copper target to 5.5 kilometres. The project is located near the town of Likely, 10 kilometres north of Imperial Metals Corp.'s Mount Polley porphyry copper gold mine, and seven km to the southeast of the past-producing QR gold mine. Historical work by previous operators identified two areas of alteration consistent with an alkalic porphyry copper-gold system. In 2013 drill hole OD-6 intersected nine metres of massive magnetite skarn grading 0.71 gram per tonne gold with semi-massive pyrite layers accompanied by chalcopyrite, epidote and garnet at the sediment/basalt contact (estimated true thickness). Work in 2025 has successfully identified this skarn horizon in bedrock 500 metres to the southeast of the original projection of the horizon.

2025 highlights:

• Gold skarn identified in bedrock for the first time;
• Float and bedrock samples returned values ranging from background to 0.54 gram per tonne gold over a 600-metre trend;
• Soil samples from the same area defined a 450-metre gold anomaly ranging from 74 parts per billion to 912 ppb gold, with copper values up to 0.13 per cent;
• Overall gold/copper target area now spans 5.5 kilometres.

Rob Cameron, chief executive officer of Enduro Metals, commented: "Work at October Dome in 2025, for the first time, identified strongly mineralized gold skarn in bedrock. This new discovery falls within a large 5.5 km long gold-copper anomaly that has only seen limited historical drilling. With only one historical drill hole intersecting similar skarn mineralization, we believe the scale and gold potential of this system is only beginning to be understood."

2025 work program

A total of 46 rock samples and nine soil samples were collected while geological mapping and prospecting new exposures created by increased placer mining activity.

Rock samples collected in 2025 were primarily grab samples and are selective in nature. While not necessarily representative of the overall mineralized system, they are effective in identifying areas of potential cohesive mineralization. One-third of rock samples returned greater than 100 ppb gold and 30 per cent exceeded 400 ppm copper. Many samples contained visible chalcopyrite, pyrite, magnetite and epidote -- minerals typically associated with skarn systems.

Soil samples were collected from a scree slope buried beneath till and comprise colluvium and fine rocks debris. Samples returned elevated gold and copper values, summarized in Table 1.

October Dome property

The October Dome property was acquired in June, 2025, through the merger with Commander Resources. The property is centrally located midway between the operating Mt. Polley copper gold open pit mine and the past-producing open pit and underground QR gold mine property.

Historical exploration at October Dome focused on alkalic-style porphyry copper-gold systems associated with monzonite and diorite intrusions, with the best drill results returning 69.5 metres grading 0.183 gram per tonne gold and 0.1 per cent copper (unverified, core length, true thickness unknown). In 2013, drilling by a previous operator returned nine metres of massive magnetite, pyrite and epidote skarn grading 0.71 g/t gold (DDH OD-6, estimated true thickness) geologically located at a major basalt/sediment contact, a setting similar to the QR gold mine property. Both the porphyry and skarn targets fall within a well-defined and robust copper and gold soil geochemical anomaly that coincides with strong magnetic and chargeability anomalies. Bedrock exposure across the property is limited to less than 1 per cent due to thick glacial till, highlighting the importance of new exposures identified during the 2025 program.

Next steps

The company is currently evaluating follow-up exploration, including additional surface work and drill targeting along the expanded skarn corridor. The scale of the anomaly and limited historical drilling provide significant opportunity for future discovery. October Dome is one a several drill-ready projects the company obtained through its acquisition of Commander Resources. The focus for Enduro is its flagship Newmont Lake project in the Golden Triangle of British Columbia and intends to seek partnerships on these additional assets.

Qualified person

Robert Cameron, PGeo, Enduro's chief executive officer, is the company's qualified person as defined by National Instrument 43-101 -- Standards of Disclosure for Mineral Projects, and has reviewed and approved the technical aspects of this release. Fieldwork was supervised by Stephen Wetherup, PGeo, VPX, for Enduro Metals.

QA/QC (quality assurance/quality control) and data verification

All project analytical work was performed by Bureau Veritas in Vancouver, B.C. At the laboratory rocks were pulverized, split into smaller aliquots and analyzed by fire assay (code FA330) for Au and 38 elements with a four-acid digestion and 38-element inductively coupled plasma and mass spectrometer process (ICP-MS, code MA250). Soils were dried, sieved to smaller size fractions (negative 80 mesh) which utilized an aqua regia digestion and finished with a multielement ICP-MS analysis (AQ250) to produce the assays.

Mineral exploration data collected on the October Dome property has been compiled from a variety of sources and previous operators covering a period of 41 years. Work was completed by Dome Exploration Canada Ltd., Valley High Ventures Ltd., Bearing Resources Ltd. and Commander Resources. Work programs (excluding that of Dome Exploration) and the data produced have been verified as accurate by Stephen Wetherup (current Enduro VPX and qualified person) or by Robert Cameron (current Enduro chief executive officer and qualified person). Mr. Cameron was also the qualified person for Valley High Ventures and Bearing Resources. Mr. Wetherup and Mr. Cameron are qualified persons under National Instrument 43-101 -- Standards of Disclosure for Mineral Projects.

Historical drill core from Dome Exploration activities is not available and the company is treating this data as valid for exploration purposes, but not compliant with NI 43-101 standards of disclosure for use in future resource estimates. These drill collars have been relocated and surveyed and in addition were observed at the time of drilling by Mr. Cameron.

See news dated Nov. 24, 2011, Nov. 7, 2012, Dec. 3, 2013 (under Bearing Lithium), posted on SEDAR+ for detailed technical disclosure.

About Enduro Metals Corp.

Enduro Metals is an exploration company focused on its Newmont Lake project; a 688-square-kilometre property located within the heart of British Columbia's Golden Triangle. Building on prior results, Enduro Metals' geological team has outlined multiple deposit environments of interest across the Newmont Lake project including high-grade epithermal/skarn gold along the McLymont Fault, and copper-gold alkalic porphyry systems at Burgundy and Andrei. The company maintains a broader portfolio of mineral projects across Canada including the advanced Burn porphyry copper and gold project in Northern British Columbia.

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