Perth, May 15, 2026, 05:03 AWST
Northern Star Resources’ supplier payments are likely to be delayed until May 21 after a cyber incident at a service provider left part of the Australian gold miner’s enterprise resource planning system offline.
The outage matters now because it hits back-office systems while Northern Star is trying to keep investors focused on execution at its KCGM mill expansion in Kalgoorlie, a project central to its next leg of growth.
Shares of Northern Star closed down 2.36% at A$21.13 on Thursday, underperforming Evolution Mining and Newmont’s ASX-listed CDIs, which fell 1.27% and 1.22%, respectively, as gold also softened.
The company said in a supplier notice last updated May 12 that a subset of its ERP system remained unavailable after a cyber security incident affecting its service provider. ERP, or enterprise resource planning software, is the system companies use to handle functions such as procurement, ordering, invoices and payments.
Northern Star said backups were intact and restoration work was under way, including system recovery, testing and verification. It has moved to temporary manual processes for procurement and operational needs.
The company said there was no evidence that supplier data or information held by Northern Star had been compromised. It also said its Pogo mine in the United States was not affected and continued to operate normally.
The risk is that restoration takes longer than expected, or that the company’s assessment of data exposure changes. Even without a stated production halt, delays to purchase orders and supplier payments can become a practical issue for a miner running large sites and a major construction project.
Northern Star sold 380,807 ounces of gold in the March quarter at an all-in sustaining cost of A$2,709 an ounce, a company filing showed. All-in sustaining cost is a standard mining measure that captures the cost of producing gold, including sustaining capital needed to keep operations running.
Managing Director Stuart Tonkin said in the April quarterly report that the company expected to deliver revised FY26 production guidance of above 1.5 million ounces, but added that the outlook remained “particularly dependent on mill throughput at KCGM.” NSR Limited
KCGM remains the swing factor. Northern Star said the mill expansion was on track for commissioning in early FY27, while KCGM mill expansion capital spending was revised to A$680 million-A$700 million from A$640 million-A$660 million.
Gold’s backdrop is less clean than it was. Spot gold fell 0.4% to $4,669.48 an ounce on Thursday as oil prices and the U.S. dollar rose, while Reuters quoted Zaner Metals strategist Peter Grant as saying a firmer dollar was “putting gold under some pressure.” Reuters
Prediction markets also showed little near-term relief from rates. Polymarket’s Fed rates dashboard showed traders pricing a 98% chance of no change at the June Federal Reserve meeting and only a 1% chance of a 25-basis-point cut, a rate backdrop that usually weighs on non-yielding assets such as gold.
Northern Star says it is one of the world’s leading gold producers, with operating mines and exploration programs in Western Australia and Alaska. Its latest market test is narrower but immediate: keep suppliers moving, bring systems back safely, and avoid letting an IT disruption blur the bigger KCGM story.
