Slide 1: ~100% Resource Growth To 1.8Moz In 6 Months
ASX |SGC For personal use only ~100% Resource Growth To 1.8Moz In 6 Months MT HENRY GOLD PROJECT, NORSEMAN, WESTERN AUSTRALIA Mineral Resource Update 14 September 2026
Slide 2: Disclaimers & Cautionary Statements
Disclaimers & Cautionary Statements GENERAL DISCLAIMER This presentation is for information purposes only and does not constitute a prospectus, offering memorandum or disclosure document under Australian, U.S ., Canadian or any other law . It does not, and does not purport to, contain all the inform
Slide 3: Corporate Snapshot
Corporate Snapshot GLOBAL BANKING & ANALYST COVERAGE For personal use only CAPITAL STRUCTURE Cash on Hand 1 $38.2m Share Price 2 $1.34 Shares Outstanding 185.6m Market Capitalisation $249M Performance Rights / Options 65.8M / 1.25M SHAREHOLDER SUMMARY 3 Institutional Ownership (Global) ~30% Westgold
Slide 4: Large, Shallow Resource in Tier 1 Western Australia
Large, Shallow Resource in Tier 1 Western Australia SCALE SHALLOW GROWTH DEVELOPMENT For personal use only 1.8Moz ~90% 5 rigs Simple, Shallow Drilling ongoing, focused @ 1.2g/t Au within ~ 2 0 0m of surface Open - pit potential on growth • ~100% growth in 6 months. • Broad and thick (up to 50m). • O
Slide 5: A High Density of Shallow Ounces And Still OPEN
A High Density of Shallow Ounces And Still OPEN The Mt Henry Gold Project Ounces per Vertical Metre For personal use only Ounces per Vertical Metre 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 0 20 40 60 80 Vertical Depth Below Surface (RL) 100 120 140 160 180 200 200m RL 220 240 OPEN at depth Dri
Slide 6: Mt Henry Is A Proven Gold Producer
Mt Henry Is A Proven Gold Producer Mt Henry History 1,2 For personal use only • Historic feasibility study completed (Panoramic, 2015) 2 • Mt Henry was acquired by Metals X • Developed and mined by Metals X / Westgold • Open - pit mining operations (2016 to 2019) • Average recovered grade ~1.7 g/t A
Slide 7: Years of Limited Drilling. Now That's Changing.
30 Years of Limited Drilling. Now That’s Changing. 1.8Moz @ 1.2g/t Au For personal use only 50,000 Drill metres / yr 8,000 Interim MRE Gold price (A$/oz) Sinclair’s Maiden 50,000m 7,000 CY26 Drill Program Only 20,000m drilling 40,000 6,000 Included in the 1.8Moz MRE 5,000 Gold Price (A$) Drill metre
Slide 8: 1.8Moz Defined Across A Much Larger Gold System
1.8Moz Defined Across A Much Larger Gold System 16km Corridor Deposits remain OPEN Significant untested areas Multiple growth options Extensive BIF hosted 1.8Moz within Mt Henry, Large gaps and strike extensions Clear pathways for ongoing For personal use only mineralized trend Selene & North Scotia
Slide 9: ~100% Growth in Months. More Growth To Come
~100% Growth in 6 Months. More Growth To Come December 2025 Feb - March 2026 March - Sept 2026 INTERIM RESOURCE For personal use only UPDATE TRANSACTION ANNOUNCED MOBILISATION RAPID EXPANSION 48Mt @ 1.2g/t Au ✓ Four rigs on site. ✓ Acquisition of Mt Henry announced ✓ Completed transaction. ✓ First r
Slide 10: Selene: Strong Growth And Still Open
Selene: Strong Growth And Still Open AT ACQUISITION INTERIM RESOURCE WHAT DRILLING DELIVERED For personal use only 0.7M oz Au 0.9Moz Au Resource growth Increased scale 19Mt @ 1.1g/t Au ~25Mt @ 1.1g/t Au Further growth Increased confidence potential Never mined RAPID GROWTH Assays pending for 10 hole
Slide 11: Selene: Thick, Consistent, Shallow Gold Deposit
Selene: Thick, Consistent, Shallow Gold Deposit Birthday Gift 60m @ 1.7g/t Au Selene Oblique View from 100m ~1km (looking north - east) Selene is a thick, consistent shallow dipping, orebody A’ 36m @ 1.6g/t Au For personal use only 59m @ 1.3g/t Au from 31m Plutus Oblique cross section (looking North
Slide 12: Selene: Drilling Continuing Well Beyond The MRE
Selene: Drilling Continuing Well Beyond The MRE Birthday Gift Selene Oblique View ~1km (looking north - east) Plutus For personal use only ~200m Plutus Southern Thickness Target OPEN Trend OPEN PLUTUS • 20m @ 2.2 g/t Au • 20m @ 2.6 g/t Au Legend OPEN Indicated MRE Inferred MRE 200m CY26 drill area A
Slide 13: Mt Henry: Strong Growth And Still Open
Mt Henry: Strong Growth And Still Open AT ACQUISITION INTERIM RESOURCE WHAT DRILLING DELIVERED For personal use only 0.2M oz Au 0.9Moz Au Resource growth Increased scale 4.8Mt @ 1.5g/t Au ~2 2 Mt @ 1.2 g/t Au Further growth Increased confidence potential Historic open - pit mine RAPID GROWTH Assays
Slide 14: Mt Henry: Significant Growth Across 2km Strike
Mt Henry: Significant Growth Across 2km Strike Artemis Mt Henry Oblique View Mt Henry has multiple mineralized lodes within the 50m (looking east) horizon For personal use only Birthday Gift 0m Cross Section (looking North) 300m 26m @ 1.4g/t Au 50m from 29m 22m @ 2.4g/t Au OPEN from 87m 100m 1.0m @
Slide 15: Mt Henry: Drilling Continuing Well Beyond The MRE
Mt Henry: Drilling Continuing Well Beyond The MRE Artemis Mt Henry Oblique View Artemis Target 50m (looking north - east) For personal use only Birthday Gift 300m Birthday Gift OPEN ARTEMIS • 12m @ 6.1 g/t Au • 12m @ 4.3 g/t Au OPEN • 2m @15.8 g/t Au OPEN OPEN BIRTHDAY GIFT N 200m • 10m @ 88.2 g/t A
Slide 16: The Next Generation of Potential Growth
The Next Generation of Potential Growth Birthday Gift Long Section (looking east) 20m @ 2.6g/t 23m @ 1.9g/t 27m @ 1.0g/t 17m @ 1.9g/t 2m @ 15.8g/t 2m @ 46.3g/t 10m @ 88.2g/t 5m @ 7.7g/t For personal use only 25m @ 1.3g/t 9m @ 3.2g/t 0m 50m OPEN 100m OPEN Legend OPEN 150m +25 gm +5 gm OPEN +10 gm <5
Slide 17: Are We Seeing The Start of Something Much Bigger?
Are We Seeing The Start of Something Much Bigger? What if the current Resource areas and regional prospects grow towards For personal use only each other and at depth… N ARTEMIS MT HENRY BIRTHDAY GIFT SELENE PLUTUS (~1.5km) (~2km) (~2.5km) ~50m ~300m ~1km (~1.5km) ~200m (~1km) OPEN OPEN OPEN OPEN OP
Slide 18: Delivering On Our Commitments
Delivering On Our Commitments What we said we would do: What we have said we will do next: For personal use only Deliver meaningful Resource growth Target further Resource growth. Next before the end of CY26 MRE update before the end of FY27 What we delivered: 1.8Moz @ 1.2g/t Au ~100% Resource growt
Slide 19: For personal use only
For personal use only REGISTERED OFFICE Level 2, 8 Richardson Street West Perth WA 6005 PHONE +61 (0) 8 6279 9425 info@sinclairgold.com EMAIL sinclairgold.com ASX | SGC sinclairgold.com ASX | SGC 19
Slide 20: Appendix: Mineral Resources as at July 2026
APPENDIX 1 Mineral Resources are as at 31 July 2026 JORC (2012) Cut - off Grade Deposit Tonnes (Mt) Grade (g/t Au) Contained Gold (koz) Classification (g/t Au) For personal use only Indicated 12.8 1.3 521 0.5 Mt Henry Inferred 9.2 1.2 364 Total Mt Henry 0.5 22.0 1.3 885 Indicated 20.1 1.1 710 0.5 Se