Key Takeaways

  • Carnaby holders would receive 0.0682 Evolution shares per Carnaby share, about A$0.772 at Evolution's 24 July close - a 60.4% premium to Carnaby's A$0.48 close and 31.4% above its 30-day VWAP.
  • The consideration is entirely scrip, so holders would swap a single-asset copper explorer for roughly 0.9% of an ASX-50 gold and copper producer, taking on Evolution share-price risk.
  • The scheme still needs ACCC clearance, court approval, a favourable independent expert report and 75% of votes cast. It is agreed and recommended, but not completed.

Why Carnaby is suddenly in focus

Carnaby Resources (ASX: CNB) told the market late on 26 July 2026 that it had signed a binding scheme implementation deed with Evolution Mining (ASX: EVN). If it completes, the scheme ends Carnaby's run as an independent explorer at Greater Duchess, its copper-gold project in north-west Queensland.

The stock had closed at A$0.48 on 24 July. It traded up towards the implied offer value of about A$0.772 when the market reopened on 27 July, while Evolution.

The terms, precisely

Carnaby shareholders would receive 0.0682 new Evolution shares for each Carnaby share. Against Evolution's A$11.29 close on 24 July, that implies A$0.772 a share and equity value of about A$213 million fully diluted. There is no cash component for ordinary shares.

The premium is 60.4% to the last close, 46.2% to the 15-day volume weighted average price of A$0.53 and 31.4% to the 30-day VWAP of A$0.59. Carnaby's 5.52 million unlisted options are cancelled for cash.

Because the exchange ratio is fixed, the value Carnaby holders finally receive moves with Evolution's.

What Carnaby actually owns

Greater Duchess sits roughly 70 kilometres south-east of Mount Isa and about 75 kilometres from Cloncurry, across close to 1,900 square kilometres of iron oxide copper-gold tenure.

The mineral resource estimate, dated 27 January 2026, stands at 29.2 million tonnes at 1.3% copper and 0.2 grams per tonne gold, or 1.5% copper equivalent, for 380,300 tonnes of contained copper, 230,200 ounces of gold and 440,500 tonnes of copper equivalent. Of that, 17.0 million tonnes is indicated and 12.2 million tonnes inferred.

A maiden ore reserve declared on 16 March 2026 covers 8.4 million tonnes at 1.7% copper and 0.3 grams per tonne gold, entirely probable, split evenly between open pit and underground. Named deposits include Mount Hope, Nil Desperandum, Lady Fanny and Trekelano, plus Burke and Wills, Duchess, Inheritance and the newer Trek 1 and Miniboom lodes.

The study that made it developable

The pre-feasibility study released with that reserve was built around toll treatment: crushed ore hauled by road train to Glencore's Mount Isa facilities under binding tolling and offtake agreements. Avoiding a plant cut the pre-production capital estimate to just A$11 million.

On base-case assumptions of A$16,500 a tonne copper and A$6,000 an ounce gold, it indicated a post-tax net present value of A$322 million at a 7% discount rate, payback of about 1.1 years and a 12-year life yielding 141,000 tonnes of copper and 62,000 ounces of gold. C1 cash costs were A$8,722 a tonne of payable copper and all-in sustaining costs A$9,583.

Those are study estimates, not guidance. No final investment decision was taken and Evolution intends an updated feasibility study over 12 to 18 months.

Why an existing mill changes the economics

Evolution's interest is not the orebody in isolation. It is the fit with Ernest Henry, its copper-gold operation in the same Cloncurry district, which carries latent mill capacity. Evolution says Greater Duchess could add about 10,000 tonnes a year of copper there.

Feeding third-party ore into an existing plant sidesteps the largest cost and longest delay in any greenfield mine: the processing facility. No new concentrator means no multi-hundred-million-dollar capital bill, a far narrower permitting scope, no new tailings storage and no commissioning ramp-up.

The trade-off is that whoever owns the mill captures the milling margin. Carnaby's study paid that margin to Glencore. Those tolling and offtake agreements are now to be terminated, with Carnaby issuing about 28.6 million shares, roughly 9.4% of enlarged capital, to Glencore.

The balance sheet Carnaby was working with

Carnaby held A$13.0 million in cash at 31 March 2026, down from A$16.0 million at 31 December 2025. For a pre-revenue explorer running drill rigs and a feasibility study, that is about a year of activity at recent burn rates, not development funding.

Even with an A$11 million pre-production capital estimate, working capital, pre-strip, haulage mobilisation and closure bonding would have needed more than the treasury held. Independence therefore implied equity raising and dilution, debt, or a partner - relevant context when judging the premium.

What the price implies per tonne of copper

On the disclosed figures, A$213 million of equity value against 380,300 tonnes of contained copper works out at roughly A$560 a tonne, or about A$0.25 a pound in the ground, before crediting the 230,200 ounces of gold.

Netting off the A$13.0 million cash brings it closer to A$526 a tonne; against 440,500 tonnes of copper equivalent it is nearer A$484. This is arithmetic from disclosures, not a valuation: resource-stage metal is not reserve-grade metal and share and copper prices move continuously.

The vote, the conditions and the register

The scheme requires 75% of votes cast and a majority of shareholders voting, ACCC merger clearance, two court approvals, an independent expert concluding it is in shareholders' best interests and no material adverse change. No FIRB condition was disclosed; both parties are Australian.

The board recommends the scheme unanimously, subject to no superior proposal and the expert's conclusion and directors holding about 7.3% of shares intend to vote in favour. Managing director Rob Watkins said the board had judged the Evolution proposal the most compelling risk-adjusted value for shareholders.

Exclusivity is conventional: no-shop and no-talk with a fiduciary carve-out, notification and matching rights. A reimbursement fee of A$2,134,412 runs each way. Earlier substantial holder notices identified United Super and Hammer Metals. The booklet goes to ASIC in early September, with implementation targeted for mid-November.

Risks Carnaby holders should weigh

The first risk is the plainest: this is an agreed and recommended transaction, not a completed one. The regulator, the courts, the independent expert and the shareholder vote all sit ahead of it and schemes can fail.

The second is scrip. A fall in Evolution's shares cuts the value received and no collar or floor was disclosed. Holders would end up with about 0.9% of Evolution, exposed to a producing portfolio rather than one Queensland project.

Third, no competing bidder has emerged. Absent one, the alternative is independence with a A$13 million treasury, only 8.4 million tonnes of probable reserve converted from a 29.2 million tonne resource, a terminated tolling pathway to replace and copper price exposure through a long feasibility process.

What to watch from here

The independent expert's report in the scheme booklet matters most for Carnaby holders. It must value Greater Duchess on an Ernest Henry processing case rather than the Glencore tolling case the study assumed and that comparison will frame whether 0.0682 Evolution shares is fair and reasonable.

Until then, Evolution's. The gap between Carnaby's traded price and the implied offer value is the market's running estimate of completion risk. None of this is advice and prices change continuously.