Alligator Energy (ASX: AGE) Hits 30Mlbs Uranium Milestone at Samphire as Expansion Story Gains Momentum

Key Highlights

• Samphire uranium resource grows 67% to 30 million pounds U₃O₈
• Maiden Plumbush resource adds 12 million pounds located just 5km from Blackbush
• New land access agreement unlocks immediate exploration upside
• Aggressive drilling campaign planned for the second half of 2026
• Bankable Feasibility Study remains on track for mid-2027

Australia’s uranium sector received another boost this week as Alligator Energy (ASX: AGE) expanded the resource base at its flagship Samphire Uranium Project in South Australia, pushing total resources to the important 30 million pound milestone.

The company unveiled a maiden Mineral Resource Estimate (MRE) for the Plumbush deposit containing 12 million pounds of uranium oxide (U₃O₈), lifting the total Samphire resource from 18 million pounds to 30 million pounds. The result represents a 67% increase and strengthens Samphire’s position among Australia’s emerging uranium development projects.

The timing is notable. Uranium demand continues to gather momentum globally as countries seek reliable, low-carbon electricity generation. From the United States to Europe and Asia, governments are increasingly turning back to nuclear power as part of long-term energy security strategies.

Against that backdrop, scale matters.

At the time of writing this article, AGE shares were trading at A$ 0.04, down by 23.81%.  Source: MarketIndex 

Samphire gets bigger

The newly defined Plumbush resource contains 14.9 million tonnes grading 370 parts per million U₃O₈ and sits just 5 kilometres south of the existing Blackbush deposit.

That proximity could prove valuable.

Rather than developing standalone operations, the two deposits may ultimately share infrastructure, processing facilities and operational expertise, potentially improving project economics and extending mine life.

Importantly, Alligator generated the entire maiden resource largely through the reinterpretation of historical drilling data from 2009 to 2011. By applying geological knowledge gained from Blackbush, the company was able to create significant value without extensive new drilling.

In an exploration industry where drilling budgets can quickly escalate, that efficiency stands out.

A project built for low-cost uranium production

One of Samphire’s key advantages is its suitability for In-Situ Recovery (ISR) mining.

Unlike conventional open-pit or underground mining operations, ISR extracts uranium by circulating solutions through permeable sandstone formations. The process generally requires lower capital investment, smaller surface infrastructure and reduced environmental disturbance.

South Australia already hosts successful ISR uranium operations including Beverley and Four Mile, providing a well-established regulatory and operational framework.

According to Alligator, 100% of the Plumbush resource occurs within permeable geological units considered suitable for ISR extraction using acidic lixiviant solutions.

As uranium developers compete globally for capital, projects with lower development costs and simpler processing routes often attract greater attention.

Land access deal opens the next chapter

Alongside the resource upgrade, Alligator announced a binding call option agreement over the Mullaquana Crown Lease with Joyce Pastoral Pty Ltd.

The structure appears strategically designed.

The company will pay a modest $500,000 option fee on 1 July 2026, securing immediate and unrestricted exploration access for 18 months. During that period, Alligator can exercise an option to acquire the lease for $6.75 million.

The arrangement allows the company to continue proving up the broader mineralised system before committing significant acquisition capital.

For explorers, flexibility is often as important as funding.

Management sees more growth ahead

Chief Executive Officer and Managing Director Andrea Marsland-Smith said the maiden resource confirms the broader geological model emerging across Samphire.

“This maiden MRE for Plumbush provides further validation of our geological model and the expansion potential of the Samphire Project. Delivering a 12 Mlbs MRE located within 5 km from Blackbush materially enhances the scale of Samphire, with immediate drill-ready targets now accessible following the finalisation of access arrangements with the landholder.”

She added that the enlarged resource base strengthens the foundation for the ongoing feasibility work.

“Importantly, with an MRE of 30 Mlbs, it now provides the Company with a stronger foundation, as we advance our BFS. We are well positioned to diligently deliver further MRE growth and conversion to Indicated and Measured categories, via our upcoming aggressive drilling campaign.”

What comes next?

The next 12 months could be pivotal.

Multiple drilling rigs are expected to begin work during the second half of 2026, targeting resource growth between Blackbush and Plumbush while also upgrading resource confidence categories.

An updated Mineral Resource Estimate is planned for early 2027, followed by the release of the Bankable Feasibility Study in mid-2027.

For Alligator Energy, crossing the 30 million pound threshold is not the finish line. It is another step in transforming Samphire from a promising uranium discovery into a potentially significant future producer at a time when global demand for nuclear fuel is steadily rising.

Source: Alligator Energy ASX Announcement, 19 June 2026; Company presentations and resource update disclosures.