Highlights

  • Deep Yellow shares rose 14.36% to AUD 1.73 during the session.
  • Detailed engineering at Tumas was 79% complete at the end of the June quarter.
  • Two major civil and concrete construction contracts have been awarded for Tumas.
  • Deep Yellow is targeting a Tumas final Investment decision in the fourth quarter of 2026, subject to market conditions.

Deep Yellow Ltd (ASX:DYL) shares moved sharply higher as the uranium developer continues preparations for the next major decision point at its Tumas Project in Namibia.

DYL shares were trading at AUD 1.73, up 14.36%, giving the company a Market Capitalisation of approximately AUD 1.69 billion. The stock has gained 14.74% over the past year.

Operational attention is centred on Tumas, while the company also progresses a revised development study for Mulga Rock in Western Australia.

Tumas Moves Closer to Construction Readiness

Deep Yellow ended the June quarter with detailed engineering at Tumas approximately 79% complete.

Bulk earthworks had also been completed, while the company continued engineering, procurement and site-readiness activities ahead of a potential final investment decision.

In July, Deep Yellow awarded two major civil and concrete construction contracts, with mobilisation scheduled from August 2026.

The work is intended to create multiple construction fronts and improve execution readiness without changing the planned 24-month construction schedule following FID.

Tumas currently has a total uranium resource of about 137 million pounds of U3O8 and an ore reserve of 79.5 million pounds.

FID Remains the Major Decision Point

Deep Yellow has targeted a final investment decision for Tumas in the fourth quarter of 2026, subject to uranium market conditions.

The company has adopted a staged development approach after previously deferring the decision to commit to full plant construction.

At 30 June 2026, Deep Yellow held approximately AUD 160 million in cash and cash equivalents, providing funding for ongoing development and exploration work.

Mulga Rock Adds Development Optionality

In Western Australia, Deep Yellow is progressing a revised Definitive Feasibility Study for the Mulga Rock Project.

The work is assessing a broader polymetallic development concept incorporating uranium alongside critical minerals and rare earth elements.

The company intends Mulga Rock to follow Tumas in its broader multi-mine development strategy.

What Could Drive Deep Yellow Shares Next?

The Tumas FID remains one of the clearest future milestones.

Additional engineering progress, construction-readiness updates, uranium market conditions and the revised Mulga Rock study could also influence expectations.

Deep Yellow Outlook

Deep Yellow is moving Tumas through engineering and early construction-readiness work while retaining Mulga Rock as a second advanced development option. The timing and outcome of the Tumas FID will remain central to DYL’s transition from developer towards potential uranium production.