• Gold production guidance of 54-70koz for Simberi Operations in FY26
• AISC guidance of A$4,000-A$4,400/oz for Simberi Operations in FY26
• Touquoy care and maintenance costs of A$11-A$12 million, and reclamation costs of A$4-A$5 million in FY26

St Barbara Limited ('St Barbara' or the 'Company') (ASX:SBM) has provided gold production and All-in Sustaining Costs ('AISC') guidance for the 2026 financial year ('FY26'). For the Simberi Operations, the Company expects gold production of 54,000 to 70,000 ounces, with an AISC of A$4,000 to A$4,400 per ounce (US$2,100 to US$2,400 per ounce at an AUD/USD exchange rate of 0.66). The Company's internal forecast indicates the anticipated spread of gold production across the quarters, with the second half of the year typically seeing higher production due to fewer planned shutdowns. The arrival of the Company's owned Volvo A60H units in Q1 September FY26 is expected to support increased production. Guidance on growth capital investment in the Simberi Expansion Project and on Simberi sustaining capital will be determined once the Company finalizes a date for a Final Investment Decision, which is dependent on the resolution of revised tax assessments from the PNG Internal Revenue Commission and the approval of the Simberi Mining Lease 136 extension. For the Touquoy operation, the Company has provided annual guidance for FY26 care and maintenance costs of between A$11 and A$12 million, and reclamation costs of between A$4 and A$5 million (down from A$12 million in FY25 as reclamation activities slow).

Gold production guidance of 54,000 to 70,000 ounces and AISC guidance of A$4,000 to A$4,400 per ounce (US$2,100 to US$2,400 per ounce at an AUD/USD exchange rate of 0.66) for the Simberi Operations in FY26.