Northern Star delivers solid September quarter, maintains outlook
Gold miner Northern Star Resources has reported gold sales of 381 055 oz at an all-in sustaining cost (AISC) of A$2 522/oz for the September 2025 quarter, with its growth and capital programmes continuing to advance across its Australian and North American operations.
Gold sales for the quarter comprised 202 812 oz from Kalgoorlie at an AISC of A$2 474/oz, 113 422 oz from Yandal at A$2 778/oz, and 64 821 oz from Pogo at an AISC of $1 453/oz.
All-in costs (AIC) of A$3 989/oz were higher than the prior year, reflecting ongoing investment in major growth projects, led by the KCGM mill expansion project.
The company reiterated its 2026 financial year gold sales guidance of between 1.7-million and 1.85-million ounces, as announced in July, and noted that production was progressing in line with expectations. Early in the December quarter, two separate operational events occurred at Jundee and South Kalgoorlie, with both expected to be resolved during the quarter. The temporary disruption is forecast to reduce December-quarter gold sales by up to 20 000 oz, with affected volumes scheduled for processing over the remainder of the financial year.
KCGM remains on track to deliver between 550 000 oz and 600 000 oz for the 2026 financial, with underground mined volumes at three-million tonnes a year and openpit mining productivity expected to increase as mining at Golden Pike North returns to one horizon.
Northern Star maintained its 2026 financial year AISC guidance of A$2 300/oz to A$2 700/oz, with costs reflecting inflationary pressures of about 5% across its operations, equating to a year-on-year increase of about A$100/oz.
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