Horizon Gold’s annual report presents Gum Creek as a potential 880,000-ounce gold operation, but flags a material uncertainty over its ability to continue without further funding. The company is targeting a Final Investment Decision in Q2 2027 and first gold in the second half of 2028.
- 880koz recovered gold targeted over a 10-year mine life
- A$350 million pre-production capital requirement
- A$1.307 billion pre-tax NPV5 at A$5,500/oz gold
- A$24.045 million cash balance at year end
- Auditor highlights material going-concern uncertainty
Gum Creek clears the feasibility hurdle
Horizon Gold Limited (ASX:HRN) has used its 2026 annual report to frame the 100%-owned Gum Creek Gold Project as a development proposition rather than an exploration story. The July 2026 Definitive Feasibility Study supports a 2.4 million tonne per year carbon-in-leach operation producing 880,000 ounces of recovered gold over an initial 10-year mine life.
At the study’s base-case gold price of A$5,500 per ounce, Gum Creek is forecast to generate A$1.854 billion in pre-tax free cash flow, a pre-tax NPV5 of A$1.307 billion and a pre-tax IRR of 53.1%. Pre-production capital is estimated at A$350 million, with an all-in sustaining cost of A$2,995 per ounce and a projected 23-month payback from first production. Those figures are forecasts, not operating results, and depend on approvals, financing, construction and the gold-price assumption.
Funding remains the decisive constraint
The annual report’s most important qualification sits in the audit section. HLB Mann Judd issued an unmodified audit opinion but drew attention to a material uncertainty that may cast significant doubt on Horizon’s ability to continue as a going concern. The company ended June with A$24.045 million in cash and a working-capital surplus of A$20.909 million, yet directors state that additional funding will be required over the next 12 months to maintain normal activities and advance the project.
That gap is substantial: the estimated pre-production capital alone is A$350 million. Horizon raised A$41.069 million through equity issues during the financial year, while exploration and evaluation spending reached A$13.357 million and operating activities consumed a further A$1.432 million. The board says it will work with a financial adviser to arrange project finance, but the report acknowledges that future funding could take the form of debt, equity, hybrids or other capital and may dilute existing shareholders.
A large resource supports the mine plan
Gum Creek’s November 2025 Mineral Resource stands at 37.97 million tonnes grading 1.89 grams per tonne for 2.30 million ounces of gold, including 1.63 million ounces in the Indicated category. The maiden open-pit Ore Reserve contains 18.2 million tonnes at 1.24 grams per tonne for 728,000 ounces, all classified as Probable.
The 25.1 million tonne Production Target contains 962,000 ounces, with 76% of its ounces underpinned by Probable Ore Reserves, 18% by Indicated Resources outside the reserve and 6% by Inferred Resources. Horizon says the Inferred component is not a determining factor in project viability, although the report also acknowledges the lower geological confidence attached to Inferred Resources and the uncertainty around ultimately realising the target.
Exploration keeps the upside case alive
The company completed 119 reverse-circulation holes, 22 diamond holes and 24 water bores during the financial year, with drilling across Howards, Kingfisher, Omega, Goldfinch, Swift, Eagle and other prospects. Results included 39 metres at 4.58 grams per tonne gold at Howards, 4 metres at 11.35 grams per tonne at Kingfisher and 14 metres at 2.87 grams per tonne at Omega.
Much of that exploration sits outside the current DFS mine plan. Horizon is also assessing underground opportunities at Swan/Swift, Kingfisher, Omega and Wilsons, where the existing resource includes 400,200 ounces at 4.31 grams per tonne. The company’s DORA platform, developed with VRIFY, has identified additional targets across the Gum Creek greenstone belt, though those targets remain subject to field validation and further drilling.
Q2 2027 decision sets the next test
Horizon is targeting FID in the second quarter of 2027, with early works, detailed engineering, contractor engagement and long-lead procurement planned before construction is expected to begin in the fourth quarter of 2027. First gold is targeted for the second half of 2028, subject to environmental approvals, financing and project implementation.
For shareholders, the next chapter is therefore less about whether Gum Creek has a study and more about whether the study can be funded and converted into a buildable project. The resource and DFS provide the platform; the funding package, approvals and final investment decision will determine how much of the forecast value survives contact with construction.
Bottom Line?
Gum Creek now has a defined mine plan and attractive study economics, but financing the A$350 million build remains the immediate test before the Q2 2027 investment decision.
Questions in the middle?
- Can Horizon secure project finance on terms that limit dilution before the targeted Q2 2027 FID?
- How will approvals, detailed engineering and contractor pricing affect the A$350 million capital estimate?
- Will ongoing drilling convert exploration upside into additional reserves or extend the 10-year mine plan?