Mayfair Gold Reports Early High-Grade Drill Results at Ontario Fenn-Gib Project

Mayfair Gold Corp. ("Mayfair", "Mayfair Gold", or the "Company") (TSXV:MFG) (NSYE: MINE) is pleased to announce the initial results from the tight-spaced, grade control drilling program ("Grade Control Program" or "Program") at the Fenn-Gib Project in Northern Ontario.

Nick Campbell, CEO of Mayfair Gold commented, "These initial results increase our confidence in the highest‑grade, early years of the Fenn‑Gib mine. While preliminary, they indicate potential for positive grade reconciliation, support the PFS early‑year assumptions, and are providing important data to advance project financing. Remaining assays are expected in Q1 2026."

The Grade Control Program comprised 56 diamond drill holes totaling approximately 4,200 metres. All holes were drilled vertically on a 10 m x 10 m spacing pattern to a target depth of 75 metres. The program was completed within the core of the Phase 1 starter pit and represents roughly one million tonnes of material anticipated to form part of the initial plant feed once construction is complete.

The objective of the program was to simulate grade control drilling and provide additional data to support delineation of the near‑surface portion of the orebody.  This news release reports results from 36 of the 56 drill holes; assays for the remaining holes are pending.

These results are considered interim in nature until all data from the complete Program is received and all QAQC results have been verified. No conclusions are being drawn currently regarding potential impacts on the overall mineral resource estimate or mine plan. In addition, the drill results disclosed herein were not incorporated into the Company's 2026 Pre-Feasibility Study, published on 8 January 2026 and titled "Fenn-Gib Project: NI 43101 Technical Report and Pre-Feasibility Study." A copy of the technical report is available under the Company's profile on SEDAR+.

According to Jean-Francois Metail, Mayfair's Mineral Resource consultant, "In these interim results, the grade control program is already providing a high level of confidence in the block model within the starter pit. Just as importantly, it is generating critical, mining‑scale information on ore geometry, dilution, and potential ore loss that will be hugely useful as the operation moves toward start‑up and early production."

The objectives of the Grade Control Program were to:

• Validate near‑surface grade distribution and ore geometry using closely spaced grade‑control drilling
• Compare drilling results directly against the existing resource block model to assess local grade variability
• Improve definition of ore–waste boundaries to support efficient mining (i.e., reduce dilution and metal‑loss in both planning and operations)
• Increase confidence in grades and production during the ramp-up and early years of operations
• Contribute to broader strategy of de‑risking the Project following the PFS
• Enhance confidence for potential lenders as part of the Fenn-Gib project financing