Wallbridge Mining Company Limited TSX: WM / OTCQB: WLBMF

Introduction

Wallbridge Mining Company Limited is a Canadian gold exploration and development company focused on the Detour-Fenelon Gold Trend in northern Québec’s Abitibi region. The company controls a contiguous mineral-property position of approximately 598 km² extending roughly 82 km along the trend. Its principal assets are the 100%-owned Fenelon Gold Project and the nearby 100%-owned Martiniere Gold Project.

Fenelon is the flagship development asset. The March 2025 Preliminary Economic Assessment outlined a predominantly underground operation producing an average of approximately 107,000 oz of gold annually over a 16-year mine life. The PEA used a US$2,200/oz gold price and estimated an after-tax NPV5% of C$706M, after-tax IRR of 21%, initial capital of C$579M, and AISC of US$1,046/oz.

The company is now advancing Fenelon toward a Pre-Feasibility Study expected in late 2027 or early 2028. In May 2026, Wallbridge raised approximately C$56M through strategic investments from Agnico Eagle and Waratah Capital Advisors. Management states that the proceeds, together with existing funds, are expected to fully finance the Fenelon PFS. Wallbridge reported C$74.3M in cash and C$73.5M in working capital at June 30, 2026.

The investment case rests on 5 main factors:

• More than 4.1 Moz of combined indicated and inferred gold resources at Fenelon and Martiniere.

• A strong underground resource grade at Fenelon.

• A long-life PEA-stage project with relatively low projected AISC.

• Strategic ownership from Agnico Eagle, Waratah, and Eric Sprott.

• District-scale exploration optionality along the same regional structure that hosts the Detour Lake mine.

The principal weakness is capital intensity. Fenelon requires estimated initial capital of C$579M, significantly more than Wallbridge’s current market capitalization. The PEA is also preliminary, includes inferred resources, and does not establish mineral reserves. Wallbridge must complete the PFS, convert resources, advance permitting, secure construction financing, and demonstrate that PEA-level metallurgy, costs, recoveries, and grades can be delivered in practice.

A further corporate event is pending. Shareholders will vote on September 29, 2026, on a proposed consolidation of up to one post-consolidation share for every 20 existing shares and a proposed name change to Sunday Lake Gold Corp. Until approved, the company remains Wallbridge Mining Company Limited under the ticker WM.

Projects / Location / MRE / Grades

Project 1: Fenelon Gold Project, Québec (Flagship PEA-Stage Development Asset)

Fenelon is located in Québec’s Nord-du-Québec region, approximately 75 km west-northwest of Matagami and approximately 80 km east of Agnico Eagle’s Detour Lake mine. Wallbridge owns 100% of the project.

The property is accessible using existing roads and is located within an established Canadian mining region. Existing site infrastructure includes an exploration camp, road access, and underground development from previous bulk-sampling work. However, Fenelon is not a past-producing mine with a completed processing plant. The PEA assumes construction of a new 3,000-tonne-per-day mill, paste plant, tailings-management facilities, power infrastructure, water-treatment systems, camp expansion, and substantial underground development.

Wallbridge acquired Fenelon in 2016 and significantly expanded the land position through its 2020 acquisition of Balmoral Resources. More than 456,000 metres of drilling were completed at Fenelon between 2017 and the end of 2024.

The major gold zones include:

• Area 51

• Contact Tabasco Cayenne or CTC

• Gabbro zones

• Ripley

The deposit contains both broader disseminated mineralization and higher-grade vein-style mineralization. It remains open in several directions and at depth.

Fenelon Mineral Resource Estimate

The effective date of the current MRE is March 20, 2025.

Resource Area	Category	Tonnes	Gold Grade	Contained Gold
Open pit	Indicated	3.121 Mt	2.50 g/t	251,000 oz
Underground	Indicated	11.966 Mt	3.91 g/t	1,503,000 oz
Fenelon total	Indicated	15.087 Mt	3.62 g/t	1,754,000 oz
Open pit	Inferred	2.313 Mt	2.53 g/t	188,000 oz
Underground	Inferred	12.715 Mt	3.57 g/t	1,461,000 oz
Fenelon total	Inferred	15.028 Mt	3.41 g/t	1,649,000 oz

Fenelon contains approximately 1.75 Moz indicated and 1.65 Moz inferred, for a combined 3.40 Moz across both categories. Indicated and inferred resources should not be added as though they have the same geological confidence, and none of the resources are mineral reserves.

Fenelon Grade Feel

Fenelon has a strong grade profile for an underground development project. The underground indicated resource grades 3.91 g/t gold, while the underground inferred resource grades 3.57 g/t. The open-pit resource is also relatively high grade at approximately 2.50 g/t.

The 2025 PEA uses an average mined grade of 3.34 g/t. This is attractive, especially when combined with an estimated 96% recovery and US$1,046/oz AISC.

The key qualification is dilution and resource conversion. Approximately 1.65 Moz at Fenelon remains inferred. The PFS infill program must demonstrate continuity and convert enough inferred material into indicated resources to support a higher-confidence mine plan.

Fenelon PEA Economics

The March 2025 PEA assumed US$2,200/oz gold and a C$/US$ exchange rate of 1.35.

PEA Metric	Value
Pre-production period	2 years
Mine life	16 production years
Processing rate	3,000 tpd
Total material milled	16.6 Mt
Average mined grade	3.34 g/t gold
Overall gold recovery	96%
Total gold production	1.711 Moz
Average annual production	107,000 oz
Average annual production first five years	127,000 oz
Initial capital	C$579M
Sustaining capital	C$449M
Total cash cost	US$851/oz
AISC	US$1,046/oz
After-tax NPV5%	C$706M
After-tax IRR	21%
Payback from commercial production	4.0 years
Average annual after-tax cash flow	Approximately C$120M

The economics are solid at the PEA’s US$2,200/oz gold assumption. At US$3,000/oz, the company’s sensitivity table shows after-tax NPV5% increasing to approximately C$1.381B, after-tax IRR increasing to 34%, and payback falling to approximately 2.4 years.

The cost structure is a major positive. US$1,046/oz AISC would be competitive if confirmed by the PFS and later studies. The concern is the C$579M initial capital requirement. Wallbridge has enough funding for the PFS, but it does not currently have construction financing.

Fenelon Metallurgy and Processing

The PEA assumes an overall gold recovery of 96% using a relatively conventional flowsheet involving gravity recovery, carbon-in-leach processing, elution, and a gold room. Flotation of detoxified residue would be used to produce desulphurized dry-stack tailings.

Wallbridge completed seven dedicated metallurgical holes totalling 3,144 metres during 2026. The program produced 820 kg of mineralized sample material for PFS testwork. Initial results from the testing program are expected in the second half of Q4 2026.

The PFS testwork will compare three potential processing approaches:

• Whole-ore leaching.

• Whole-ore leaching with carbon.

• Flotation.

The testwork will also examine recovery variability across different grades and mining periods and assess the suitability of tailings for dry-stack storage.

Project 2: Martiniere Gold Project, Québec (Resource Growth and Satellite Optionality)

Martiniere is located approximately 30 km west of Fenelon, approximately 45 km east of the Detour Lake mine, and along the same Sunday Lake Deformation Zone. Wallbridge owns 100% of the property.

The known mineralized footprint covers approximately 2 km by 2 km. The project includes the Bug Lake, Martiniere West, Dragonfly, Horsefly, and related mineralized trends. Much of the mineralization remains open along strike and has received limited testing below approximately 400 metres.

Martiniere is not included in the Fenelon PEA. It should therefore be treated as separate exploration and development optionality rather than part of Fenelon’s published economics.

Martiniere Mineral Resource Estimate

Resource Area	Category	Tonnes	Gold Grade	Contained Gold
Open pit	Indicated	3.928 Mt	1.97 g/t	249,000 oz
Underground long-hole	Indicated	0.750 Mt	3.89 g/t	94,000 oz
Underground cut-and-fill	Indicated	0.025 Mt	4.29 g/t	3,000 oz
Martiniere total	Indicated	4.703 Mt	2.29 g/t	346,000 oz
Open pit	Inferred	1.982 Mt	2.22 g/t	142,000 oz
Underground long-hole	Inferred	1.813 Mt	4.06 g/t	237,000 oz
Underground cut-and-fill	Inferred	0.075 Mt	3.62 g/t	9,000 oz
Martiniere total	Inferred	3.870 Mt	3.11 g/t	387,000 oz

Martiniere contains 346,000 oz indicated and 387,000 oz inferred, for a total of 733,000 oz across both categories.

Martiniere Grade Feel

Martiniere has a respectable grade profile. The open-pit resource grades close to 2 g/t, while the underground long-hole resource grades approximately 3.9–4.1 g/t.

The underground grade is attractive, but Martiniere remains less advanced than Fenelon. It does not yet have a PEA, a defined mine plan, mineral reserves, capital estimates, or project-level economics.

Martiniere Exploration Upside

Wallbridge completed 4,050 metres of drilling during the first half of 2026 before regional wildfires shortened the program. The work confirmed continuity between the Dragonfly and Bug Lake zones, tested the down-plunge extension of Dragonfly, and identified northern expansion potential beyond Horsefly.

Management’s stated objective is to test whether Martiniere can grow into a resource exceeding 2 Moz. This is an exploration target, not a current mineral resource.

If Martiniere grows materially, it could support one of three strategic outcomes:

• A future standalone development.

• A satellite deposit linked to regional infrastructure.

• A strategic transaction involving another producer active along the Detour-Fenelon trend.

Project 3: Regional Detour-Fenelon Properties

District-Scale Exploration Optionality

Wallbridge’s broader portfolio includes Casault, Grasset Gold, Harri, Doigt, Nantel, and other early-stage targets along or near the Sunday Lake Deformation Zone.

Casault

Casault comprises three claim blocks covering approximately 177 km². Wallbridge has an option to earn up to a 65% interest from Midland Exploration.

The property is located approximately 35 km east of Detour Lake and 14 km west of Martiniere. Wallbridge commenced an approximately 3,000-metre drilling program in August 2026 covering ten to twelve holes.

The priority target is the Vortex gold occurrence, where historical results include:

• 1.30 g/t gold over 23.5 metres, including 3.46 g/t over 6.0 metres.

• 1.38 g/t gold over 26.5 metres, including 7.87 g/t over 2.2 metres.

Wallbridge has also identified the untested C2 structural target and other targets where the Sunday Lake Deformation Zone intersects cross-faults and intrusive contacts.

Grasset Gold Harri Doigt and Nantel

These properties provide additional early-stage optionality across Wallbridge’s regional land package. They do not currently have mineral resources or economic studies and should not be assigned the same value as Fenelon or Martiniere.

Wallbridge also owns:

• An 8.1% interest in NorthX Nickel, recorded at nil in its June 2026 financial statements.

• A 2% net-smelter-return royalty on the Detour East property sold to Agnico Eagle in 2025. Agnico has a C$4M royalty buyback provision.

• Cash, share, and exploration-payment exposure through the option of the N2 property to Formation Metals.

These assets could create future value, but they are not central to the current investment case.

Combined Mineral Resources

Deposit	Indicated Tonnes	Indicated Grade	Indicated Gold	Inferred Tonnes	Inferred Grade	Inferred Gold
Fenelon	15.087 Mt	3.62 g/t	1.754 Moz	15.028 Mt	3.41 g/t	1.649 Moz
Martiniere	4.703 Mt	2.29 g/t	0.346 Moz	3.870 Mt	3.11 g/t	0.387 Moz
Combined	19.790 Mt	Approximately 3.30 g/t	2.100 Moz	18.898 Mt	Approximately 3.35 g/t	2.036 Moz

Share Structure / Ownership / Insiders

Capital Structure Metric	Value
Common shares outstanding	1,830,849,901
Warrants	121,256,260
Stock options	36,633,989
Deferred share units	15,887,131
Restricted share units	9,450,452
Fully diluted shares	2,014,077,733
Cash at June 30, 2026	C$74.34M
Working capital at June 30, 2026	C$73.52M
Conventional interest-bearing debt	No material conventional debt disclosed
Reference share price	C$0.095
Basic market capitalization at C$0.095	Approximately C$173.9M
Fully diluted market capitalization at C$0.095	Approximately C$191.3M
Approximate cash-adjusted FD enterprise value	Approximately C$117.0M
Proposed consolidation	Up to 20 existing shares for one new share
Pro forma basic shares after 20 to 1 consolidation	Approximately 91.54M
Pro forma fully diluted shares after 20 to 1 consolidation	Approximately 100.70M

Ownership

Ownership Group	Approximate Ownership
Waratah Capital Advisors	19.9%
Agnico Eagle	19.6%
Eric Sprott	9.0%
William Day Holdings	3.2%
Insiders	0.6%
Retail and other investors	47.7%
Total	100%

People / Management

Brian W Penny, Chief Executive Officer and Director

Brian Penny has more than 30 years of mining-industry financial leadership experience. Before joining Wallbridge, he served as Executive Vice President and CFO of New Gold and as Vice President of Finance and CFO of Kinross Gold.

His board experience includes Equinox Minerals, Alamos Gold, Baffinland Iron Mines, and Maverix Metals. He has experience in capital allocation, balance-sheet management, mergers and acquisitions, and public-company finance.

Mary Montgomery, Chief Financial Officer

Mary Montgomery has held senior financial positions in the Sudbury mining sector and has a long history with Wallbridge. She served as Wallbridge’s CFO from 2007 to 2018 and later returned to the position.

She is a CPA, CA and previously served as CFO of Miocene.

Mark Petersen, Senior Geological Consultant

Mark Petersen has more than 29 years of precious- and base-metal exploration experience across the Americas. His experience covers grassroots exploration, discovery, resource development, and mine-site exploration.

He previously served as Vice President of Exploration for Metallica Resources and worked with Lac Minerals, Bond Gold, and St. Joe Gold.

Janet Wilkinson, Chair

Janet Wilkinson has more than 30 years of human-resources, corporate, consulting, and operating experience across more than 80 mining and metals businesses in approximately 30 jurisdictions.

Board and Technical Depth

The board includes Brian Christie, who previously worked at Agnico Eagle and major mining companies including Homestake, Billiton, Falconbridge, and Newmont; Danielle Giovenazzo, an experienced exploration geologist; Michael Pesner, a finance, governance, and M&A specialist; and Jeffery Snow, a mining executive and former IAMGOLD senior vice-president.

Wallbridge has also engaged experienced independent groups for the Fenelon studies, including InnovExplo, Norda Stelo, G Mining Services, BBA, Mayhew Performance, Synectiq, and Base Metallurgical Laboratories.

Risks / Catalysts / Timeline

Key Risks

Key Risk	Why It Matters
PEA-level study risk	The current economics are based on a PEA and include inferred resources. A PFS can materially change tonnage, grade, mine design, recovery, capital, operating costs, or project value.
Resource-conversion risk	Fenelon contains 1.65 Moz inferred. Additional drilling is required before inferred resources can support a higher-confidence production plan.
Initial-capital risk	Initial capex is estimated at C$579M, far above Wallbridge’s current market capitalization and cash position.
Financing and dilution risk	The PFS is funded, but construction is not. Future development could require debt, streaming, royalties, strategic investment, equity, or a partnership.
Grade-reconciliation risk	The PEA assumes an average mined grade of 3.34 g/t. Actual underground dilution, continuity, mining recovery, and grade control could differ.
Metallurgical risk	The PEA assumes 96% recovery. PFS testwork must confirm recovery across different mineralization styles, grades, and mining periods.
Infrastructure and construction risk	A new mill, paste plant, tailings facilities, power infrastructure, water treatment, camp expansion, and underground development are required.
Cost-inflation risk	The PEA uses 2025-level estimates. Labour, equipment, construction, energy, and contractor costs could rise before a construction decision.
Permitting risk	Wallbridge must complete environmental, provincial, and federal approval processes before construction. Timing has not been finalized.
Indigenous and community risk	Long-term development depends on maintaining productive relationships with affected Cree communities and regional stakeholders.
Wildfire and access risk	Wildfires interrupted exploration activity during 2026, demonstrating that seasonal field access can affect schedules.
Commodity-price risk	Fenelon is sensitive to gold prices. Lower gold prices would reduce NPV, IRR, financing flexibility, and strategic interest.
Single-development-asset risk	Fenelon provides most of the current economic value. Martiniere and the regional assets do not yet have economic studies.
Ownership concentration	Agnico and Waratah together own approximately 39.5%, giving them considerable influence over corporate and strategic decisions.
Share-consolidation risk	A consolidation may improve marketability but does not create value. Post-consolidation shares can still decline if project execution disappoints.
Long development timeline	The PFS is not expected until late 2027 or early 2028. Feasibility, permitting, financing, engineering, and construction would follow.

Catalysts

Expected Period	Catalyst
September 29, 2026	Shareholder vote on the proposed share consolidation and Sunday Lake Gold name change
Q3–Q4 2026	Resumption and expansion of Fenelon infill drilling
Q3–Q4 2026	Approximately 3,000-metre Casault drilling program
H2 Q4 2026	Initial PFS metallurgical test results
Late 2026	Additional Fenelon drilling results and assays
Late 2026 onward	Larger-scale Fenelon resource-conversion drilling
2027	Updated resource modelling for the Fenelon PFS
2027	Progress on processing, infrastructure, tailings, power, water, and mine-design trade-off studies
2027	Further Martiniere drilling and potential movement toward a larger resource
Late 2027 or early 2028	Targeted completion of the Fenelon PFS
Post-PFS	Potential feasibility study, environmental assessment, permitting, financing, and strategic-partner decisions
Longer term	Construction decision and possible development of Fenelon
Longer term	Martiniere resource expansion, standalone development, or integration into a regional strategy

Expected Timeline to Full Production

Year or Period	Focus	What It Means
2026	PFS preparation begins	Metallurgy, infill drilling, exploration, infrastructure studies, and corporate restructuring
2027	Main PFS work program	Resource conversion, mine design, cost estimates, permitting studies, and engineering
Late 2027 to early 2028	Targeted PFS completion	First higher-confidence test of the PEA economics
2028 onward	Feasibility and permitting	Timing depends on PFS results, environmental work, financing, and strategic decisions
Following approvals	Two-year pre-production period	The PEA assumes approximately two years of construction and underground development
2030s potential	Possible production period	This is an analyst inference, not company guidance; Wallbridge has not published a firm production date

Wallbridge should not currently be described as a near-term producer. It is an advanced PEA-stage developer moving toward a PFS, with several major development stages remaining.

Valuation

Important Valuation Note

The following is a simplified high-gold-price torque model, not an official Wallbridge forecast. It estimates potential valuation sensitivity at US$6,000/oz and US$7,000/oz gold.

The model is based primarily on Fenelon because it is the only Wallbridge project with a published economic study. Martiniere and the regional properties are assigned separate optionality values.

This model assumes:

• Fenelon eventually achieves the PEA production profile.

• Total payable production of approximately 1.711 Moz.

• Average payable production of approximately 106,938 oz annually.

• Base average annual after-tax cash flow of approximately C$120M at US$2,200/oz gold.

• C$/US$ exchange rate of 1.35.

• 4% royalty allowance.

• Simplified 27% effective tax allowance on incremental margin.

• Constant production and costs for sensitivity purposes.

• 2.014B fully diluted pre-consolidation shares.

• No additional construction dilution, debt, streaming, or financing charges.

These assumptions are intentionally simplified. The 15× and 20× cash-flow cases are aggressive for a finite-life single-mine asset and should be treated as high-end scenarios.

Project Valuation Treatment

Project or Asset	Valuation Treatment
Fenelon Gold Project	Main annual free-cash-flow valuation based on the PEA production profile
Martiniere	Resource and exploration optionality
Casault and regional properties	Early-stage discovery optionality
Detour East royalty and NorthX interest	Non-core corporate optionality
Cash balance	Not added separately in the main table to avoid overstating value before PFS spending and future development funding

Optionality Value Assumptions

Optionality Asset	Conservative Value	Base Value	Aggressive Value
Martiniere 733,000 oz resource optionality	C$18.3M	C$36.7M	C$55.0M
Casault and broader regional exploration	C$10.0M	C$25.0M	C$50.0M
Detour East royalty and NorthX interest	C$5.0M	C$10.0M	C$20.0M
Total optionality value	C$33.3M	C$71.7M	C$125.0M

All Projects Valuation Table

This table adds the C$71.7M base optionality value to the Fenelon cash-flow valuation.

Gold Price	Average Annual FCF	FCF Multiple	Fenelon Value	Optionality	Total Implied Value	Implied Value per Existing Share	20 to 1 Equivalent
US$6,000	C$504.5M	10×	C$5.045B	C$71.7M	C$5.116B	C$2.54	C$50.80
US$6,000	C$504.5M	15×	C$7.567B	C$71.7M	C$7.638B	C$3.79	C$75.85
US$6,000	C$504.5M	20×	C$10.089B	C$71.7M	C$10.161B	C$5.04	C$100.90
US$7,000	C$605.6M	10×	C$6.056B	C$71.7M	C$6.128B	C$3.04	C$60.85
US$7,000	C$605.6M	15×	C$9.084B	C$71.7M	C$9.156B	C$4.55	C$90.92
US$7,000	C$605.6M	20×	C$12.112B	C$71.7M	C$12.184B	C$6.05	C$120.99

Summary & Quick Scorecard

Category	Assessment	Score
Company Overview	Ticker: WM and WLBMF. Main metal: gold. Phase: advanced PEA-stage developer moving toward PFS. Country: Canada.	—
1 Management	Previous successful company and transaction experience: Yes. Exploration-to-development experience: Yes. Big-company experience: Yes, including Kinross, New Gold, Agnico, Newmont, Falconbridge, and Lac Minerals. Capital market experience: Yes	Strong
2 Projects	High grade: Yes. MRE exceeds 1.5 Moz: Yes. Multiple deposits and regional optionality: Yes.	Strong
3 Cost Structure	PEA AISC of US$1,046/oz is low. Initial capex of C$579M is high relative to company size.	Strong
4 Share Structure Discipline	Approximately 2.014B fully diluted shares before consolidation. The proposed rollback does not erase historical dilution.	Weak
5 Insider Ownership	Approximately 0.6% direct insider ownership. With 52% insider aligned.	Strong
6 Location	Canada and Québec’s Abitibi region. Tier 1 jurisdiction with strong mining history and nearby infrastructure.	Strong

RT Rating, Commentary

Wallbridge Mining is on our watchlist.

RT rating: 5 out of 5 stars.

Wallbridge has several qualities that make it stand out from a typical junior gold explorer. Fenelon is already a multi-million-ounce PEA-stage project with a strong underground grade, competitive projected AISC, a 16-year mine life, and meaningful leverage to higher gold prices. Martiniere and the broader Detour-Fenelon land package provide additional resource-growth and discovery optionality.

The strategic shareholder base is a major positive. Agnico Eagle, Waratah, and Eric Sprott collectively control close to half of the company. Agnico’s involvement is especially important because it operates Detour Lake and understands the region. The C$56M financing also leaves Wallbridge with a strong balance sheet and a funded pathway to complete the Fenelon PFS.

The biggest strength is the combination of grade and projected cost. Fenelon’s underground indicated resource grades 3.91 g/t, and the PEA estimates AISC of US$1,046/oz. If those figures survive the PFS and later studies, Fenelon could become a profitable long-life underground gold operation.

The main issue is that the project is not close to production. The PFS is not expected until late 2027 or early 2028. Feasibility work, environmental approvals, construction financing, detailed engineering, and an estimated two-year pre-production period would still follow.

The C$579M initial capital requirement is also substantial. The PFS may be funded, but the mine is not. Wallbridge will probably need a combination of strategic capital, debt, equity, royalties, streaming, or partnership funding. That creates future dilution and financing risk.

The share structure is another clear weakness. A 20-for-1 consolidation may produce a cleaner post-consolidation share count, but it does not alter the company’s valuation or repair historical dilution.

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