Vault Minerals Limited ASX: VAU
Introduction
Vault Minerals Limited is an Australian intermediate gold producer operating a diversified portfolio of mines and processing infrastructure in Western Australia, together with the Sugar Zone development project in Ontario, Canada.
Vault was created in June 2024 through the merger of Red 5 Limited and Silver Lake Resources. The combined company owns the Leonora operations, including King of the Hills and Darlot, the Mount Monger operations near Kalgoorlie, the Deflector gold-copper operations in Western Australia, and the Sugar Zone gold project in Canada.
Vault produced 336,540oz of gold in FY26 and generated A$487.8M of free cash flow. It finished FY26 with A$841.6M in cash and bullion, no debt, and no remaining gold hedges. FY26 revenue from metal sales was A$1.88B, underlying EBITDA was A$953.3M, and statutory net profit after tax was A$278.4M.
Standalone FY27 guidance is 355,000-375,000oz of gold at an AISC of A$3,150-A$3,350/oz. Production is expected to increase to 380,000-400,000oz in FY28 as the King of the Hills processing expansion ramps up and Sugar Zone restarts.
However, Vault is no longer a normal standalone producer investment. On 14 July 2026, Vault and Genesis Minerals agreed to merge through a scheme of arrangement. Under the default consideration, Vault shareholders will receive 0.7629 Genesis shares plus A$0.475 cash for each Vault share. Following Genesis’s A$0.05-per-share final dividend, the cash component is expected to increase to approximately A$0.513 per Vault share.
The merger would give existing Vault shareholders approximately 40.2% of the enlarged Genesis group. The combined company is expected to produce approximately 600,000-700,000oz annually and control complementary mining and processing assets across the Leonora-Laverton district. The companies estimate approximately A$2.0B of post-tax, undiscounted potential synergies.
The fundamental assets remain attractive, but investors buying VAU today are effectively buying a merger-linked exposure to Genesis rather than a fully independent Vault Minerals growth story.
Projects / Location / MRE / Grades
Project 1: Leonora Operations, Western Australia – Flagship Production and Growth Asset
Leonora is Vault’s largest production centre and includes King of the Hills, Darlot, the KoTH processing facility, stockpiles and several satellite deposits. It produced 179,666oz in FY26 at an AISC of A$2,723/oz. FY27 guidance is 198,000-208,000oz at A$2,750-A$2,950/oz.
| Leonora Resource / Reserve | Tonnes | Grade | Contained Gold |
| M&I Resource | 128.5Mt | 1.1g/t | 4.59Moz |
| Inferred Resource | 33.8Mt | 1.6g/t | 1.73Moz |
| Total Resource | 162.4Mt | 1.2g/t | 6.32Moz |
| Proved Reserve | 24.3Mt | 0.4g/t | 332koz |
| Probable Reserve | 104.1Mt | 0.7g/t | 2.41Moz |
| Total Reserve | 128.5Mt | 0.7g/t | 2.74Moz |
| King of the Hills Item | Figure | Investment Feel |
| Total KoTH resource | 144.2Mt at 1.0g/t for 4.41Moz | Very large tonnage and the largest asset in the portfolio |
| KoTH open-pit reserve | 102.6Mt at 0.6g/t for 2.09Moz | Large but low-grade open-pit base |
| KoTH underground resource | 5.8Mt at 2.7g/t for 499koz | Higher-grade feed that improves portfolio quality |
| Processing expansion | Stage 2 was ~85% complete at 30 June 2026; >7.5Mtpa target | Strategic value increases if Genesis sends higher-grade Tower Hill ore through KoTH |
KoTH’s open-pit grade is low, but scale, infrastructure, stockpiles, underground feed and potential Genesis ore allocation make the asset strategically important. Darlot adds a 1.91Moz resource at 3.3g/t and 223koz reserves at 2.3g/t, but needs ongoing conversion and underground development.
Project 2: Mount Monger Operations, Western Australia – Established High-Grade Production Centre
Mount Monger is located near Kalgoorlie and includes the Daisy underground complex, Mount Belches, Santa, Rumbles, Aldiss deposits, the Randalls processing facility and large ore stockpiles. It produced 79,225oz in FY26 at an AISC of A$3,025/oz, with FY27 guidance of 83,000-89,000oz at A$2,950-A$3,150/oz.
| Mount Monger Item | Tonnes / Grade | Contained Gold / Feel |
| M&I Resource | 24.4Mt at 3.0g/t | 2.38Moz |
| Inferred Resource | 8.5Mt at 4.5g/t | 1.22Moz |
| Total Resource | 32.8Mt at 3.4g/t | 3.59Moz |
| Total Reserve | 11.06Mt at 1.7g/t | 602koz |
| Grade / optionality feel | Daisy high-grade underground; Santa and Rumbles open-pit feed; Mount Belches optionality | High-grade portfolio quality, but costs remain moderate rather than low |
Project 3: Deflector Gold-Copper Operations, Western Australia – High-Grade but Higher-Cost Asset
Deflector produced 77,649oz of gold in FY26 plus copper by-product production. FY26 AISC was A$3,282/oz, while FY27 guidance is A$4,300-A$4,500/oz, making Deflector the highest-cost part of Vault’s operating portfolio.
| Deflector Item | Tonnes / Grade | Contained Gold / Commentary |
| M&I Resource | 2.77Mt at 8.0g/t | 712koz |
| Inferred Resource | 1.10Mt at 5.9g/t | 208koz |
| Total Resource | 3.87Mt at 7.4g/t | 921koz plus ~14,900t copper |
| Total Reserve | 1.71Mt at 3.1g/t | 170koz plus ~3,000t copper |
| Key issue | Large gap between resource grade and reserve grade | Monitor dilution, grade reconciliation, reserve conversion, copper recovery and unit costs |
Project 4: Sugar Zone Gold Project, Ontario, Canada – Restart and Growth Project
Sugar Zone is a high-grade underground restart project in Ontario. Underground development recommenced on 1 July 2026, and production is targeted to restart in Q1 FY28. Vault’s standalone FY28 outlook includes approximately 40,000-44,000oz from Sugar Zone.
| Sugar Zone Item | Tonnes / Grade | Contained Gold / Feel |
| M&I Resource | 2.90Mt at 8.6g/t | 801koz |
| Inferred Resource | 1.91Mt at 7.3g/t | 450koz |
| Total Resource | 4.81Mt at 8.1g/t | 1.25Moz |
| Probable Reserve | 2.44Mt at 5.1g/t | 398koz |
| FY27 growth capital | Approx. A$96M | Tailings facility, infrastructure upgrades, underground development and plant restart preparation |
Group Resource, Reserve and Production Snapshot
| Operating Centre | Gold Resource | Gold Reserve | FY26 Production / FY27 Guidance |
| Leonora | 6.32Moz at 1.2g/t | 2.74Moz at 0.7g/t | 179,666oz FY26; 198,000-208,000oz FY27 |
| Mount Monger | 3.59Moz at 3.4g/t | 602koz at 1.7g/t | 79,225oz FY26; 83,000-89,000oz FY27 |
| Deflector | 921koz at 7.4g/t | 170koz at 3.1g/t | 77,649oz FY26; 74,000-78,000oz FY27 |
| Sugar Zone | 1.25Moz at 8.1g/t | 398koz at 5.1g/t | Development in FY27; restart targeted Q1 FY28 |
| Group total | 12.08Moz at 1.8g/t | 3.91Moz at 0.8g/t | 336,540oz FY26; 355,000-375,000oz FY27 |
| Cost Structure Item | Current Position | Investment Feel |
| FY26 group AISC | A$2,924/oz | Guidance achieved, but above upper end of guidance |
| FY27 group AISC guidance | A$3,150-A$3,350/oz | Not low-cost, but strong margins if gold remains high |
| Deflector FY27 AISC | A$4,300-A$4,500/oz | Major cost watch item |
| Balance sheet | A$841.6M cash and bullion; no debt; no hedges | Strong financial capacity and full spot-gold exposure |
| Capital intensity | Growth capital, deferred stripping, fleet purchases, underground development and Sugar Zone spend | Reported AISC is not the same as total free-cash-flow cost |
Share Structure / Ownership / Insiders
Capital Structure
| Capital Structure Metric | Value | Commentary |
| Basic shares outstanding | 1,034,565,895 | As at 30 June 2026 |
| Performance rights | Approx. 18.58M | Potential dilution / incentive securities |
| Approx. fully diluted shares | 1,053.15M | Used for valuation framework |
| Cash and bullion | A$841.6M | Strong balance sheet |
| Debt | Nil | No financial debt at FY26 close |
| Gold hedges | Nil | Full exposure to spot gold prices |
| FY26 buy-back | 11.98M shares / A$53.9M | Capital return during FY26 |
Vault completed a 6.5-to-1 share consolidation in November 2025. The consolidation reduced the issued share count from approximately 6.79B shares to approximately 1.04B shares without changing proportional ownership. The structure remains large, so per-share growth requires sustained cash generation, reserve replacement and successful integration if the Genesis merger completes.
Ownership / Insiders
| Ownership Item | Status | Feel |
| Director / key management ownership | Approx. 3.7M shares disclosed in FY26 annual report; well below 1% of issued shares | Weak under founder-led insider ownership scoring |
| Institutional ownership | Meaningful ASX 200-style institutional register; State Street reported 6.62% relevant interest in August 2026 | Normal for a larger producer |
| Ownership feel | More institutional than founder-led | Acceptable for producer scale, but not a high-insider-alignment junior |
People / Management
| Person | Role | Details | Management Feel |
| Luke Tonkin | Managing Director and CEO | 40+ years in mining. Former senior roles at WMC Resources and Sons of Gwalia; former MD of Mount Gibson Iron, Reed Resources / Neometals and Silver Lake Resources. | Experienced operator for a multi-mine integration story. |
| Russell Clark | Non-Executive Chairman | Mining engineer with 45+ years of operations, project development and corporate leadership. Former MD/CEO of Grange Resources and Group Executive Operations at Newmont. | Strong large-company operating background; expected chair of enlarged Genesis if merger completes. |
| Kelvin Flynn | Non-Executive Director | Chartered accountant with 35+ years across investment banking, M&A, private equity and special situations. Former Goldman Sachs and Alvarez & Marsal. | Useful capital markets and transaction experience. |
| Rebecca Prain | Non-Executive Director | Geologist with ~35 years of mining-industry experience and CEO of Advanced Mining Production Systems. | Operational improvement and resource-estimation capability. |
| Peter Johnston | Non-Executive Director | 36+ years in mining operations and project development. Former Head of Global Nickel Assets at Glencore and CEO of Minara Resources. | Deep operations and project-development experience. |
| David Quinlivan | Non-Executive Director | 50+ years in mining and executive leadership. Former CEO / executive roles across Sons of Gwalia, Mount Gibson, Alacer and Ora Banda. | Significant turnaround and operating leadership background. |
| Struan Richards | Chief Financial Officer | Responsible for financial reporting, treasury, capital management, budgeting, taxation and financial planning. | Important for multi-operation capital allocation and cash management. |
| Steve Harvey | Chief Operating Officer | Responsible for operational performance across the mining portfolio. | Central to margin control, mine execution and reserve replacement. |
Risks / Catalysts / Timeline
Key Risks
| Key Risk | Why It Matters |
| Merger completion risk | Vault’s share price now reflects the proposed Genesis transaction. Shareholder, Court, regulatory, independent-expert and other conditions could delay or prevent completion. |
| Genesis share-price risk | Most consideration is Genesis shares. A decline in Genesis Minerals directly reduces the implied value received by VAU shareholders. |
| Integration / synergy risk | The A$2.0B synergy estimate depends on successful integration of mines, mills, fleets, ore haulage, personnel, technical systems and capital allocation. Synergies are estimates, not guaranteed cash flows. |
| Gold-price risk | Vault’s earnings and merger valuation remain highly sensitive to gold prices. Lower prices would reduce margins, cash flow, reserves and market valuation. |
| Cost inflation risk | FY27 AISC is guided at A$3,150-A$3,350/oz. Labour, diesel, explosives, contractors, royalties and consumables can pressure margins further. |
| KoTH grade and expansion risk | KoTH open-pit reserve grade is ~0.6g/t. The Stage 2 processing expansion must commission and ramp up successfully to deliver the expected throughput increase. |
| Deflector cost risk | FY27 AISC guidance of A$4,300-A$4,500/oz is high. Mine development, inventory charges, grades and mine-life extension must be monitored. |
| Sugar Zone restart risk | Sugar Zone is high grade, but the prior operating history was difficult. Vault must prove stable underground mining, grades, recoveries, costs and tailings capacity. |
| Reserve life and conversion risk | Vault has 12.1Moz resources but only 3.9Moz reserves. Not all resources will convert into mineable reserves. |
| Low insider ownership | Directors and management own well below 1%, weaker than founder-led miners under the RockeTeller checklist. |
| Capital intensity and tax risk | FY27 requires major spending outside AISC, and Vault recorded an A$81.4M current tax liability payable in December 2026. |
Catalysts
| Timeline | Key Milestone |
| September 2026 | KoTH Stage 2 processing expansion commissioning |
| September-October 2026 | Expected Scheme Booklet, independent-expert report and Vault shareholder meeting |
| October-November 2026 | Expected second Court hearing and Scheme approval |
| October-November 2026 | Expected merger implementation and conversion of VAU shares into Genesis shares and cash |
| FY27 | Ramp-up of KoTH processing capacity and Leonora production growth toward 198,000-208,000oz |
| FY27 | Transition of KoTH open-pit load and haul to owner-operated mining; potential owner-operated underground mining |
| FY27 | Darlot ventilation upgrade, Deflector Contact Lode development, Rumbles mobilisation and Sugar Zone development |
| FY27 | Approximately 187km of drilling across the portfolio |
| Q1 FY28 | Targeted Sugar Zone production restart |
| FY28 | Standalone production growth to 380,000-400,000oz |
| H1 2027 | Genesis expected to release a new strategic plan for the combined portfolio |
| Medium term | Potential Tower Hill ore through KoTH and Bardoc ore through Mount Monger, subject to studies |
Expected Timeline to Full Production
| Year / Period | Focus | What It Means |
| FY26 | Existing production base | Vault produced 336,540oz and finished with A$841.6M cash and bullion, no debt and no hedges. |
| FY27 | Expansion and development | Standalone production guidance is 355,000-375,000oz. KoTH expands, Sugar Zone development ramps up and underground access/fleet work continues. |
| September 2026 | KoTH Stage 2 commissioning | Processing capacity is expected to increase by approximately 50%. |
| Q1 FY28 | Sugar Zone restart | First processing is targeted, potentially adding a fourth producing centre to the standalone portfolio. |
| FY28 | Higher production phase | Standalone output expected at 380,000-400,000oz. |
| FY29 | Stabilisation and reserve conversion | Guidance indicates 355,000-375,000oz, with upside dependent on reserve replacement and mine-life extensions. |
| Post-merger | Portfolio optimisation | Genesis expects to optimise ore allocation across KoTH, Tower Hill, Laverton, Bardoc and Mount Monger. |
Valuation / Updated Valuation Summary
Important Valuation Note
Vault’s current valuation must be considered in two different ways: transaction-linked valuation based on the Genesis merger consideration, and standalone high-gold-price valuation if Vault remained independent. The transaction-linked valuation is more relevant because Vault is expected to cease trading as an independent company if the Scheme completes.
Current Merger Consideration
Default consideration for each Vault share is 0.7629 Genesis shares plus approximately A$0.513 cash after adjustment for Genesis’s final dividend. Using Genesis’s A$7.65 closing price on 11 September 2026 implies a VAU value around A$6.35, broadly aligned with VAU’s A$6.37 trading price on the same date.
| Genesis Share Price | Share Component | Adjusted Cash | Implied VAU Value |
| A$6.00 | A$4.58 | A$0.513 | A$5.09 |
| A$7.00 | A$5.34 | A$0.513 | A$5.85 |
| A$7.65 | A$5.84 | A$0.513 | A$6.35 |
| A$8.00 | A$6.10 | A$0.513 | A$6.62 |
| A$9.00 | A$6.87 | A$0.513 | A$7.38 |
| A$10.00 | A$7.63 | A$0.513 | A$8.14 |
Standalone Valuation Treatment
| Project / Asset | Valuation Treatment |
| Leonora | Included through FY27 production and AISC guidance |
| Mount Monger | Included through FY27 production and AISC guidance |
| Deflector | Included through FY27 production and AISC guidance |
| Sugar Zone | FY27 capital included, but FY28 production not included in the core FCF estimate |
| Regional resources | No separate speculative value added |
| Genesis merger synergies | Excluded from standalone valuation |
| Cash and bullion | Added separately after transaction-related cash adjustments |
| Performance rights | Included in diluted share count |
| Gold Price | Annual FCF | FCF Multiple | Operating Value | Adjusted Cash | Total Implied Value | Implied Value / Share |
| US$6,000/oz | A$1.088B | 10x | A$10.88B | A$0.79B | A$11.67B | A$11.09 |
| US$6,000/oz | A$1.088B | 15x | A$16.33B | A$0.79B | A$17.12B | A$16.25 |
| US$6,000/oz | A$1.088B | 20x | A$21.77B | A$0.79B | A$22.56B | A$21.42 |
| US$7,000/oz | A$1.444B | 10x | A$14.44B | A$0.79B | A$15.23B | A$14.47 |
| US$7,000/oz | A$1.444B | 15x | A$21.66B | A$0.79B | A$22.46B | A$21.32 |
| US$7,000/oz | A$1.444B | 20x | A$28.89B | A$0.79B | A$29.68B | A$28.18 |
This standalone table is intentionally illustrative. It excludes realised merger synergies and does not add speculative optionality for Sugar Zone, regional resources or future reserve conversion. In practice, the current VAU price should mainly move with Genesis Minerals’ share price until completion of the Scheme.
Summary & Quick Scorecard
| Category | Assessment | Overall |
| Company Overview | Ticker: ASX: VAU. Main metal: gold. Phase: producer. Operations in Western Australia and Ontario, Canada. | – |
| 1. Management | Previous successful project / corporate transaction: Yes. Exploration-to-development experience: Yes. Big-company experience: Yes. Capital-markets record: Yes. | Strong |
| 2. Projects | High-grade deposits: Yes, especially Deflector, Sugar Zone, Daisy and Darlot. MRE above 1.5Moz: Yes. Optionality: Yes. | Strong |
| 3. Cost Structure | FY26 AISC A$2,924/oz. FY27 AISC A$3,150-A$3,350/oz. Deflector significantly higher. | Good |
| 4. Share Structure Discipline | Approx. 1.053B fully diluted shares after consolidation and performance rights. | Weak |
| 5. Insider Ownership | Executive and director ownership below 1%, excluding incentive value. | Weak |
| 6. Location | Western Australia and Ontario, Canada. Both Tier 1 mining jurisdictions. | Strong |
RT Rating, Commentary
Vault Minerals receives an RT Rating of 4 out of 5 stars.
Vault is fundamentally a strong intermediate gold producer. It owns more than 12Moz of gold resources, almost 4Moz of reserves, several established processing facilities, three producing centres, and a high-grade Canadian restart project. The company is debt-free, unhedged, highly cash-generative, and operating exclusively in Tier 1 jurisdictions.
Management is experienced, with genuine large-company, mine-operating, project-development, financing and M&A credentials. Vault also replaced depletion during FY26, expanded the KoTH processing facility, increased underground resources, advanced Sugar Zone and returned capital to shareholders.
The biggest operational weakness is cost. Vault is not a low-AISC producer. FY27 group guidance of A$3,150-A$3,350/oz is acceptable in the current gold-price environment but could become less attractive if gold weakens. Deflector’s A$4,300-A$4,500/oz guidance is particularly high.
The share structure and insider ownership are also weak under our checklist. Vault has more than one billion diluted shares, while directors and key management own well below 1% of the company.
Most importantly, the standalone investment thesis is now being replaced by the Genesis merger. At current prices, VAU trades close to the mark-to-market value of the Scheme consideration. Anyone buying VAU today must primarily be bullish on Genesis Minerals and the combined group.
The merger has strong industrial logic. KoTH’s expanded mill could process higher-grade Tower Hill ore, Genesis could avoid significant new processing capex, Mount Monger may process Bardoc feed, and the enlarged group would control strategically important infrastructure across the Leonora-Laverton district.
Overall, Vault is a good-quality producer, but it is no longer a clear independent multibagger setup. The more relevant opportunity is whether the enlarged Genesis Minerals can convert its regional infrastructure advantage into lower costs, stronger production, longer mine lives and higher per-share cash flow.
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