Vault Minerals Limited has reported group ore reserves of 3.9 million ounces of gold as of 30 June 2026, marking a 9% year-on-year increase after accounting for 398,800 ounces of mine depletion during the fiscal year.

The updated position compares with group ore reserves of 2.6 million ounces reported in the company's 30 June 2023 statement. While reserves expanded over the period, group mineral resources remained materially consistent year-on-year at 12.1 million ounces of gold. All mineral resources and ore reserves are situated within established operations in tier 1 mining jurisdictions, leveraging existing mining, processing and services infrastructure.

The expanded reserve base now underpins a three-year standalone production outlook stretching out to fiscal 2029, supported by substantial mineral inventory and established tenement positions proximal to infrastructure.

At the Leonora operations, ore reserves increased by 7% post-depletion to reach 2.7 million ounces. This regional growth was driven by Darlot, where reserves rose 48% net of depletion, and the replacement of mine depletion at the King of the Hills underground mine. King of the Hills underground mineral resources delivered a 30% increase net of depletion and a 16% increase in absolute terms, reaching 499,000 ounces. That growth reflects accelerated underground drilling, with 346 holes completed for 62,524 metres during fiscal 2026, alongside contributions from the primary granodiorite host unit and proximal sedimentary units.

Reserves also expanded across other operating centers. Deflector underground ore reserves rose 58% net of depletion to 141,000 ounces within a broader regional reserve of 170,000 ounces, supported by 51,830 metres of underground drilling. Mount Monger ore reserves increased by 15% net of depletion to 602,000 ounces, driven by growth at the Rumbles open pit and reserve replacement at the Daisy Complex. Meanwhile, restart activities at the Sugar Zone are progressing with underground development commencing on 1 July 2026, backed by reserves of 398,000 ounces.

To sustain development and resource conversion, Vault has approved an exploration investment of $44 million for fiscal 2027, covering a total of 187 kilometres of drilling across the portfolio, with financial capacity to accelerate follow-up programs subject to exploration success. Operational expansion at King of the Hills also continues to advance, with the Stage 2 plant upgrade scheduled to deliver 7.5 million tonnes per annum processing throughput capacity from late in the second quarter of fiscal 2027.

Read the full announcement: 2026 Resource and Reserve Statement