Mr. Nicholas Campbell reports

MAYFAIR GOLD FILES TECHNICAL REPORT FOR FENN-GIB GOLD PROJECT

Mayfair Gold Corp. has filed a technical report prepared in accordance with National Instrument 43-101, Standards of Disclosure for Mineral Projects, for the Fenn-Gib gold project, located in the Timmins gold district in Northeastern Ontario. The report is titled "National Instrument 43-101 Technical Report -- Mineral Resource Estimate Update Fenn-Gib Project, Ontario, Canada." A copy of the technical report is available under the company's profile on SEDAR+.

The prior NI 43-101 technical report for the Fenn-Gib project was filed on July 26, 2023, with an effective date of April 6, 2023. The effective date of this updated mineral resource estimate is Sept. 3, 2024. The assay cut-off date for drill holes included in the mineral resource was April 30, 2024. The gold price in this updated technical report was increased from $1,765 (U.S.) per ounce (oz) gold (Au) (used in the prior technical report) to $2,000 (U.S.) per oz Au, but all other costs and recoveries are unchanged. The increase in metal price resulted in lowering the cut-off grade from 0.4 gram per tonne (g/t) Au to 0.3 g/t Au and increased the footprint of the resource pit shell. In addition, this new technical report adds further detail relating to the mineral processing and metallurgical testing completed to date as follow-on from the news release dated May 27, 2025. This mineral resource and metallurgical results will support the prefeasibility study that is currently under way and expected to be released later in 2025.

This technical report was prepared by T. Maunula & Associates Consulting Inc. and Haggarty Technical Services Corp.

About Mayfair Gold Corp.

Mayfair Gold is a Canadian mineral exploration company focused on advancing the 100-per-cent-controlled Fenn-Gib gold project in the Timmins region of Northern Ontario. The Fenn-Gib gold deposit is Mayfair's flagship asset and currently hosts an updated NI 43-101 open-pit constrained mineral resource estimate with an effective date of Sept. 3, 2024, with a total indicated resource of 181.3 million tonnes containing 4.3 million ounces at a grade of 0.74 g/t Au and an inferred resource of 8.92 million tonnes containing 140,000 ounces at a grade of 0.49 g/t Au at a cut-off grade of 0.30 g/t Au.

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