• Feasibility Study confirms New Simberi Gold Project as long-life, low-cost asset
• Touquoy Restart and 15-Mile Processing Hub projects progress with positive study results
• Agreements signed with Lingbao Gold and Kumul Minerals for Simberi expansion

St Barbara Ltd has reported on its activities for the second quarter of fiscal year 2026, highlighting progress on its key development projects. The company's New Simberi Gold Project in Papua New Guinea has delivered a positive Feasibility Study, confirming a long-life, low-cost asset with annual production exceeding 200,000 ounces at an all-in sustaining cost (AISC) of US$1,100-1,400 per ounce over a 13-year mine life. The Papua New Guinea government has also approved the extension of the Mining Lease for the project to 2038. In Nova Scotia, Canada, the company has announced Pre-Feasibility Study results for the 15-Mile Processing Hub, outlining a highly attractive long-life project with over 100,000 ounces per annum production at an AISC of US$708-1,432 per ounce. The Touquoy Restart Study also demonstrated a near-term, low-capital and low-cost restart opportunity. Financially, St Barbara has signed binding agreements with Lingbao Gold and Kumul Minerals to acquire interests in the New Simberi Gold Project, and completed a A$58 million institutional placement to advance its development projects. The company expects to make a Final Investment Decision on the Simberi expansion at the end of the third quarter of fiscal year 2026.

St Barbara expects annual gold production from the New Simberi Gold Project to increase to over 200,000 ounces at an AISC of US$1,100-1,400 per ounce from fiscal year 2029 onwards, based on the Feasibility Study results. The 15-Mile Processing Hub in Nova Scotia is expected to produce over 100,000 ounces per annum at an AISC of US$708-1,432 per ounce.

St Barbara is on track to be fully funded for its share of the New Simberi Gold Project development costs, and is anticipating operating cash inflows in time to progress the 15-Mile Processing Hub through permitting and into development. The company expects gold production at Simberi to lift more than 50% in the second half of fiscal year 2026 compared to the second quarter.