• Prefeasibility Study activities progressing well with expanded drill program to capture additional upside
• Drilling continues to return wider and higher-grade tin intersections, expanding the resource
• Acceptance of new 'Ringville' exploration licence builds out the East Renison Project

Stellar Resources Limited (ASX: SRZ) has presented its quarterly activities report for the period ended 30 June 2025, highlighting key achievements centered around ongoing Prefeasibility Study activities for the Heemskirk Tin Project and the company's East Renison Project. The Heemskirk Tin Project, which ranks as the highest-grade undeveloped tin resource in Australia and the third globally, continues to advance towards development-ready status. Prefeasibility Study activities are focused on increasing metal output compared to the previous Scoping Study, with workstreams investigating increased mining rates, optimising plant size and capacity, incorporating ore sorting, and applying mining paste/fill as an alternate to tails deposition. The company's extensive diamond drill program, originally comprising 24 holes for approximately 9,500 metres, has been expanded with an additional 5 holes and wedges for 2,500 metres of drilling. This expanded program is designed to upgrade additional resources to the indicated category, provide material for metallurgical testwork, and gather geotechnical and hydrological data to enable further mine design development. Drilling at the Queen Hill deposit has continued to return highly encouraging results, including a new zone of high-grade tin mineralisation 75 metres below the existing resource. Additionally, the company has been granted a new 'Ringville' exploration licence adjacent to the Renison Tin Mine, further building out the East Renison Project. With a strong cash position, robust tin market fundamentals, and Prefeasibility work well-advanced, Stellar Resources remains focused on positioning itself as a future top-tier tin producer.

Stellar Resources remains highly focused on positioning the company as a future top-tier tin producer through the ongoing Prefeasibility Study activities and the expanded drilling program at the Heemskirk Tin Project.