Oceana Metals Limited · ASX:OCN
Oceana Metals — Diggers and Dealers 2026
20 slides from Oceana Metals's conference presentation, Aug 3, 2026
Slide 1: Transformative Acquisition - Serra Negra REE Project, Brazil
For personal use only Transformative Acquisition - Serra Negra REE Project, Brazil August 2026 Booth 1 #23
Slide 2: Important Information and Disclaimers
IMPORTANT INFORMATION AND DISCLAIMERS The following notice and disclaimers applies to this investor presentation (“Presentation”) and investors are advised to read this carefully before reading or making any other use of this Presentation. This Presentation is dated 3 August 2026 and has been prepar
Slide 3: Investment Highlights
SERRA NEGRA INVESTMENT HIGHLIGHTS For personal use only GRADE SCALE SIGNIFICANT RARE EARTH ELEMENT (REE) DISTRICT-SCALE CARBONATITE COMPLEX (10KM MINERALISATION IDENTIFIED, WITH DIAMETER) DEMONSTRATED POTENTIAL FOR GRADE AND WIDTHS TEAM ADDRESS HIGHLY SUCCESSFUL AND CREDENTIALED BOARD LOCATED IN TIE
Slide 4: Team with a Proven Track Record
TEAM WITH A PROVEN TRACK RECORD Our Backers Board of Directors Maddison Cramer For personal use only Joint Company Secretary Alexandra Hughes Joint Company Secretary Steve Parsons Michael Naylor Mick Wilson Russell Curtin Hamish Halliday Rodrigo Roso Senior Management Corporate Consultant Corporate
Slide 5: Project Highlights
SERRA NEGRA PROJECT HIGHLIGHTS Carbonatite-hosted REE + Niobium systems are highly scalable and historically underpin world-class mines For personal use only BRAZIL Tier-1 Carbonatite Complex 10km diameter intrusive complex, largest known carbonatite in the district Comparable geology to proven Braz
Slide 6: One of Brazil's Largest Carbonatite Systems
SERRA NEGRA One of Brazil’s Largest Carbonatite Systems Alto Paranaíba Igneous Province (APIP) • One of the world’s most concentrated clusters of carbonatite For personal use only complexes • The Serra Negra Complex is the largest and least-studied alkaline-carbonatite complex in the APIP • ~10 km i
Slide 7: Confirmed High-Grade REE Mineralisation
SERRA NEGRA Confirmed High-Grade REE Mineralisation Initial sampling of historic drill core NORTH SOUTH For personal use only 26m missing To be core 50m @ 1m @ sampled 4.0% TREO 4.7% TREO REE in Target 22m @ 4.7% in 80m @ 1.0% Horizon TREO 114m @ 2.3% TREO in TREO (note) 84m @ 2.1% TREO 3m missing c
Slide 8: District-Scale REE Target Footprint
SERRA NEGRA District-Scale REE Target Footprint For personal use only A *REE Mineralisation in pXRF open in multiple directions (including EOH) Emphasizes large scale potential B A B *Refer to ASX announcement dated 28 April 2026 oceanametals.com 8
Slide 9: Regional REE Targets - approximately 8,000m of Core for Re-Assay
Regional REE Targets - approximately 8,000m of Core for Re-Assay • ~8,000m historic core available for re- For personal use only LG02 assay - drilled at spacings broader than LG10 LG16 300m up to 1km apart LG15 • 29 holes sampled and submitted for re- assay so far FSN2A FSN3A LG30 • Brazil technical
Slide 10: Targeting REE Grade and Scale
SERRA NEGRA Targeting REE Grade and Scale State of Play For personal use only 8.0% LEGEND • Limited western Global Rare Earth Projects (Hard Rock Only)* aligned hard-rock REE • Mine and Producer production 7.0% • Neighbouring Project Mountain Pass (MP-US) • Processing and • Deposit and Developers se
Slide 11: Execution-Led Exploration Program
SERRA NEGRA EXECUTION-LED EXPLORATION PROGRAM Accelerated drilling to establish Initial REE resource, rapid growth and additional REE and Nb discoveries For personal use only Confirmation sampling Q2 Q3 Q4 Q1 Q2 Re-logging, sampling and assaying historic core to validate results and May Jun Jul Aug
Slide 12: Brazil Team – Field Activities underway
Brazil Team – Field Activities underway For personal use only oceanametals.com 12
Slide 13: Corporate Snapshot
CORPORATE SNAPSHOT Pro-forma balance sheet following completion of the Serra Negra acquisition and Capital Raise 255.4M A$88M ~A$16.7M NIL For personal use only ORDINARY SHARES ON ISSUE 1 MARKET CAPITALISATION 2 CASH IN BANK (POST COMPLETION) 3 DEBT SHAREHOLDER SUMMARY Steve Parsons 6.2% TOP 20 Mike
Slide 14: Catalysts 2026–2027
Catalysts 2026–2027 2026 Priorities 2027 Outlook For personal use only ▪ Geophysics targeting district- ▪ Accelerated drill programs ▪ Re-assaying 8,000m of scale carbonatite ▪ Early maiden resource base historic core ▪ Tier 1 resource base ▪ Initial Met Studies ▪ Drilling-led growth & district- ▪ I
Slide 15: Booth #23
For personal use only Booth #23 Oceana Metals Limited T: +61 8 6370 3139 E: info@oceanametals.com Principal and Registered Office L2/8 Richardson Street W: www.oceanametals.com West Perth WA 6005 Australia ACN 654 593 290
Slide 16: Serra Negra Acquisition Terms
APPENDIX 1 - TRANSFORMATIVE ACQUISITION Serra Negra Acquisition Terms For personal use only • Oceana to acquire 100% of the Brazilian entity which holds 100% of the Serra Negra Project • The Company has agreed to pay US$2.95m cash plus 20m OCN Shares at A$0.36 per share, upon completion of the trans
Slide 17: Brazil - Tier 1 Jurisdiction, Strong Investment, World-Class Infrastructure
APPENDIX 2 - BRAZIL - TIER 1 JURISDICTION, STRONG INVESTMENT, WORLD-CLASS INFRASTRUCTURE Stable Regulatory Framework • The Mining Code (1967) and recent reforms (creation of ANM in 2018) provide a stable and predictable environment with modernised oversight. For personal use only • Brazil officially
Slide 18: Serra Negra - Hardrock REE State of Play
APPENDIX 3 - SERRA NEGRA - Hardrock REE State of Play Major Global Carbonatite hosted REE deposits For personal use only Market Company Project R&R Tonnage TREO Grade MREO % of TREO Capitalisation1 ~US$10.8b MP Materials Mountain Pass (USA) ≈30–35 Mt2 ~6% TREO2 ~15–17%MREO2 (A$15.4b) Lynas Rare Eart
Slide 19: Major Global Carbonatite hosted REE deposits
Appendix 4 – Major Global Carbonatite hosted REE deposits For personal use only Company information Project info Measured Indicated Inferred Total Ticker Name Project Location Equity Type Tonnage Grade Contained Tonnage Grade Contained Tonnage Grade Contained Tonnage Grade Contained Project stage Mt
Slide 20: Major Global Carbonatite hosted REE deposits - Sources
Appendix 5 – Major Global Carbonatite hosted REE deposits For personal use only Ticker Company Name Project Source ASX:LYC Lynas Rare Earths Mt Weld Lynas' ASX announcement dated 5 August 2024, titled "2024 Mineral Resource and Ore Reserve Update" (JORC-2012) NYSE:MP MP Materials Mountain Pass MP Ma