• Coal Resources across all controlled tenements is now 5.1 billion tonnes
• Coal Reserves (ROM) formally declared and published across all controlled tenements now stand at 571 million tonnes, a 7% increase
• Total Marketable Coal Reserves are now 388 million tonnes, an 8% increase

Stanmore Resources Limited has announced an updated summary of the Company's Coal Resources and Coal Reserves for the period ending December 31, 2025. The key highlights include:- Coal Resources across all controlled tenements is now 5.1 billion tonnes- Coal Reserves (ROM) formally declared and published across all controlled tenements now stand at 571 million tonnes, a 7% increase- Total Marketable Coal Reserves are now 388 million tonnes, an 8% increase- Isaac Downs Extension Reserves have been incorporated following the successful completion of a Pre-Feasibility Study (PFS) and subsequent maiden Reserve declared in May 2025- Expanded reserve base at South Walker Creek following land access approvals granted in 4Q 2025- Coal quality information for both Resource and Reserve tonnages have been incorporated to further enhance transparency in Stanmore's reportingThe announcement provides detailed tables outlining the Coal Resources and Coal Reserves across Stanmore's various mining operations and projects, including Poitrel, South Walker Creek, Isaac Plains Complex, Millennium, Eagle Downs, and others. The report also includes information on the company's tenure interests and competent persons statements.