Northern Star Resources Ltd · ASX:NST
Northern Star Resources — Corporate Update (August 2026)
27 slides from Northern Star Resources's corporate update, Aug 3, 2026
Slide 1: KCGM Site Visit
For personal use only KCGM Site Visit August 2026
Slide 2: Disclaimers
Disclaimers For personal use only ASX Listing Rule 5.19 and 5.23 Statement Disclaimer and Forward-Looking Statements This announcement contains current estimates of Northern Star Group and KCGM Operations’ Ore Northern Star Resources Ltd has prepared this announcement based on information available
Slide 3: KCGM: The Next Era
KCGM: The Next Era For personal use only Renewables energy location Fimiston III TSF Fimiston II (G) TSF Thermal power station Processing hub 3
Slide 4: Elevating KCGM to the next era
Elevating KCGM to the next era For personal use only 42Moz 15Moz 27Mtpa Mineral Resources Ore Reserves Processing Hub Long Mine Life Regional Growth Integrated Mining Open Pit Multi-decade production Multiple ore sources Underground Stockpiles A long-life, large-scale platform for long-term sharehol
Slide 5: Building a lower-cost operation
Building a lower-cost operation For personal use only Designed to simplify the operation and reduce costs Processing Operating Energy Efficiency Efficiency Efficiency Simple to operate More flexibility Lower use Simple to maintain More value Lower cost Structurally breaking the cost cycle 5
Slide 6: Processing Efficiency
Processing For personal use only Efficiency Simple to operate Simple to maintain • Fewer and larger units • Ease of maintenance • Systematic operation and tech-enabled Targeting significant reduction in processing cost per tonne at steady state (vs FY26)* * On a real-cost basis, excluding future inf
Slide 7: Operating Efficiency
Operating For personal use only Efficiency More flexibility More value • Integrating multiple ore sources • Handling material once • Enhancing equipment productivity Unlocking a simpler, more productive mining system 7
Slide 8: Energy Efficiency
Energy For personal use only Efficiency Lower use Lower cost • Introducing renewables • New thermal power station and distribution system • Utilising existing power station Improves operating economics with greater energy self-sufficiency and reduced emissions 8 Artistic impression of future renewab
Slide 9: Breaking the cost cycle
Breaking the cost cycle For personal use only Structural cost resets creating a sustainable cost advantage Structural cost advantage Northern Star Future cost path Mill Reduced exposure Processing Mine to future cost efficiency Operating Power inflation efficiency Energy efficiency Today Operational
Slide 10: Delivering the Next Generation
For personal use only Delivering the Next Generation Ready for production. Positioned for growth.
Slide 11: Mill commissioning and processing
Mill commissioning and processing For personal use only Commissioning the expanded mill through a disciplined, staged ramp-up Commission Ramp-up Steady State Validate as-built Optimise performance Achieve steady state Lower-grade feed Introduce full ore blend Improved recovery Validate plant perform
Slide 12: 27Mtpa Fimiston processing plant
27Mtpa Fimiston processing plant For personal use only Expanded configuration – Early September tie-in New expansion infrastructure – 18Mtpa ROM Gyratory Stockpile SAG Mill New 27Mtpa Crusher Ball Mill Fimiston – 9Mtpa Early September tie-in 27Mtpa front end ROM Gyratory Stockpile SAG Mill Crusher 1
Slide 13: Operational readiness
Operational readiness For personal use only Preparing the organisation for safe, reliable operations People Workforce | Training | Control Room + Ready Enables Systems successful to New Operating System | Maintenance | Logistics mill operate commissioning + Infrastructure Power | Water | Tailings 13
Slide 14: Simplifying the Open Pit
Simplifying the Open Pit For personal use only Multiple Sources Four open pits in the larger Super Pit Optimise Mining efficiency through simplification Fimiston South Preparing the next phase of production Consists of Great Boulder and Ivanhoe cutbacks 14
Slide 15: Scale and inventory underpins future open pit production
Scale and inventory underpins future open pit production For personal use only 18Moz Mineral Resources 429Mt at 1.3g/t 8Moz Ore Reserves 182Mt at 1.4g/t 15 The breakdown of KCGM Open Pit Mineral Resources and Ore Reserves is detailed in the appendix on page 27.
Slide 16: Stockpiles provide mill feed security
Stockpiles provide mill feed security For personal use only • Stockpiles add resilience • Ore handled once, reducing mine Northern Stocks constraints • Less rehandling of stockpiles Processing Facility Future plant feed flexibility Open Pit Improved efficiency Southern Stocks 153Mt at 0.6g/t Au 3.2M
Slide 17: A two-mine underground strategy
A two-mine underground strategy For personal use only A mature foundation. A growing future. Mt Charlotte Foundation Fimiston Underground Growth • Established production • Expanding production • Proven mining system • Next generation • Reliable mill feed • Future growth engine 17
Slide 18: Fimiston Underground to drive improved grade profile
Fimiston Underground to drive improved grade profile For personal use only Majority ore sources currently from Mt Charlotte At Fimiston Underground: • Grade expected to increase as volumes grow • Development activity remains high contributing to lower grade • 1Mt mined in FY26 of the 35Mt Ore Reserv
Slide 19: Unlocking the next decade
For personal use only Unlocking the next decade Extending mine life and supporting regional opportunities
Slide 20: Extending mine life through Resource conversion
Extending mine life through Resource conversion For personal use only Converting discoveries into decades of production Exploration Mineral Resource Ore Reserve Conversion Future Mining Areas KCGM Growth Added 27Mtpa Plant Exploration & Growth KCGM Mineral Resources KCGM Ore Reserves 45 (Moz) 15 (Mo
Slide 21: Regional growth opportunities
Regional growth opportunities For personal use only Kalgoorlie district 1,543km2 tenement package A district-scale mineral system supporting long-term growth around the expanded KCGM processing hub Near Mine: Extend existing operations Underground: Build future production Regional: Provide long-term
Slide 22: Core processing facility
Core processing facility For personal use only Future-proofing Potential to automate manual processes, reducing costs Integration of advanced technologies, increasing efficiency Faster drill-assay-data turnaround KCGM drilling continues to increase with district expansion Future-proofed to accommoda
Slide 23: Laser-induced breakdown spectroscopy
Laser-induced breakdown spectroscopy For personal use only Fast and Accurate Mineralogy Advanced chemical analysis Partnered with detailed mineral libraries creates high-resolution mineral maps Delivers fast and accurate mineral quantification 20mm Supports rock-type determination and mineralisation
Slide 24: Summary
For personal use only Summary • Creating one of the world’s largest integrated gold mining operations • A 27Mtpa processing hub delivering scale, flexibility and lower costs • A district with multiple pathways for decades of growth • Every future discovery is worth more on a larger, lower-cost platf
Slide 25: The start of KCGM's journey
For personal use only The start of KCGM’s journey www.nsrltd.com
Slide 26: Mineral Resources and Ore Reserves Summary 2022 to 2026
Appendix Mineral Resources Summary – KCGM Operations – 2022 to 2026 (inclusive) For personal use only Ore Reserves Summary – KCGM Operations – 2022 to 2026 (inclusive) MINERAL RESOURCES as at 31 March 2022 ORE RESERVES as at 31 March 2022 MEASURED INDICATED INFERRED TOTAL RESOURCES PROVED PROBABLE T
Slide 27: KCGM Operations Mineral Resources Summary as at March 2026
Appendix KCGM Operations Mineral Resources Summary as at 31 March 2026 For personal use only MINERAL RESOURCES as at 31 March 2026 MEASURED INDICATED INFERRED TOTAL RESOURCES Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces NST ATTRIBUTABLE INCLUSIVE OF RESERVE (000's)
Northern Star Resources — Corporate Update (August 2026) on 6ix