• KCGM delivered strong operational performance with 2.9Mtpa annualised run rate
• FY26 production guidance of 1,700-1,850koz gold and AISC of A$2,300-2,700/oz
• KCGM Mill Expansion Project on track for early FY27 commissioning

Northern Star Resources Ltd (ASX: NST) reported its operational and financial results for the September 2025 quarter, with gold sold of 381,055oz at an all-in sustaining cost (AISC) of A$2,522/oz. The Kalgoorlie Production Centre performed well, led by KCGM, where the company maintained elevated production and development rates. Overall, costs for the quarter were better than forecast, reflecting Northern Star's continued focus on capital discipline. The KCGM Mill Expansion remains on track for early FY27 commissioning, and the company received Ministerial approval for the Fimiston South Project and associated infrastructure, which supports higher future throughput and long-term cost efficiency at KCGM. Northern Star provided FY26 guidance of 1,700-1,850koz gold sold and AISC of A$2,300-2,700/oz, with stronger grades expected at KCGM in the second half along with improved volume and grade performance across the broader portfolio. The company's growth capital expenditure in FY26 includes the KCGM Mill Expansion Project (A$530-550 million), KCGM Operational Readiness (A$315-370 million), and the Hemi Development Project (A$140-150 million). Exploration expenditure in FY26 is forecast to be approximately A$225 million.

FY26 production guidance of 1,700-1,850koz gold sold and AISC of A$2,300-2,700/oz.

Northern Star remains well positioned to deliver its full-year guidance, with stronger grades expected at KCGM in the second half along with improved volume and grade performance across the broader portfolio. Combined with growing leverage to gold prices and ongoing cost focus, the company is firmly aligned to its purpose of delivering superior returns for its shareholders.