Mayfair Gold – Expedited Development Plan; Scalable Resource Base

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Author: Atrium Research August 18, 2026

Nicholas Cortellucci, CFA | Equity Research Analyst | [email protected] | 647-391-3314

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What you need to know:

  • Mayfair is quickly advancing the Fenn-Gib Project in the Timmins Gold Camp via a strategic development plan, targeting production in 2030.
  • Fenn-Gib hosts a 4.3Moz Indicated resource at 0.74 g/t, while the 2026 PFS includes ~1Moz at 1.29 g/t yielding ~64Kozpa over 14.3 years.
  • The PFS displays strong gold leverage, returning an NPV5% of >$1B and payback of under 2 years at US$4,100/oz gold.
  • Expediting production with a smaller operation lowers risk, while pulling forward FCF generation that creates optionality to fund any organic or inorganic growth opportunities at the asset or in the region.

Mayfair Gold Corp. (MFG:TSXV, MINE:NYSE) is a gold developer advancing its FenGibb Project in Ontario’s Timmins Gold Camp, which hosts a 4.3Moz Indicated resource at 0.74 g/t. MFG plans to strategically expedite development to production, creating a cash flowing platform that can potentially be reinvested towards growth to exploit a scalable resource base, prospective land package, and fragmented region ripe for consolidation. We are initiating coverage on Mayfair Gold with a BUY rating and a target price of $8.25/share.

Investment Thesis Summary

2026 PFS Highlights Strong Economics Highly Leveraged to Gold. The January study is based on a high-grade reserve pit of ~1Moz at 1.29 g/t (0.8 g/t cut-off vs. 0.3 g/t in MRE) outlining 64.1Kozpa over a 14.3-year LOM. An even higher-grade starter pit yields 71.3Kozpa for the first 6 years expediting early cash flows. At a base case gold price of US$3,100/oz, the PFS highlights an NPV5% of $652M, IRR of 24.1%, and 2.7-year payback. This increases to >$1B, >34%, and a payback under 2 years at a gold price of US$4,100/oz.

Strategic, Scalable Development Plan. The mine plan is intentionally based on throughput of 4.8Ktpd to take advantage of Ontario’s new ‘One Project, One Process’ (1P1P) provincial permitting framework, while keeping capex at a manageable $450M. By staying <5Ktpd federal involvement is avoided allowing development approval to stay at the provincial level, potentially expediting the timeline to production by ~5 years and reducing execution and finance risk. MFG has already submitted its application for 1P1P, and approval is anticipated in the coming weeks. First production is ultimately targeted for 2030 following a ~2028 construction decision, and FCF will allow MFG to fund future growth opportunities.

Opportunity to Re-Rate in this Gold Cycle. That said, MFG is positioned to quickly advance across the development curve to production and FCF, providing investors with an opportunity for a shorter window to realize gains from an Ontario gold project re-rating to producer status. This is particularly enticing in the current gold price environment, with quality single asset producers trading toward ~1x NAV, and Fenn-Gib’s PFS plan outlining an NPV >$1B at current gold prices

Substantial Upside Beyond PFS. The mine plan only reflects ~25% of Indicated resources, leaving ~3.2Moz of gold that can support potential future expansion we forecast could be funded internally. Low hanging fruit includes a stockpile that is mined in the PFS containing ~450Koz at ~0.5 g/t. Ultimately, we see an opportunity for Fenn-Gib to support a large-scale, long-life operation; however, taking a disciplined approach and putting a smaller operation into production as quickly as possible reduces risk while creating a platform for growth.

Catalysts

  • 1P1P Permitting Approval – H2 2026
  • Project Debt Financing/Indigenous Agreements – 2027
  • Construction Decision – 2028

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