Announcement PDF For more information, please join ABx Group’s interactive Investor Hub: https://abxgroup.com.au/s/965068 ABx Group Limited Suite 2, Level 11, 385 Bourke Street, Melbourne, VIC 3000 ABN 14 139 494 885 P: +61 3 9692 7222 | F: +61 2 9956 7355 Amendment to ASX Announcement ABx Group Limited (ASX: ABX) (ABx or the Company) attaches an amended version of its ASX announcement titled “Rare Earths Presentation – PDAC”, originally released to the market on 3 March 2026. The following amendments have been made: • Slide 6 – inclusion of a reference to Appendix Data Sources, which provides underlying information on Mixed Rare Earth Carbonate composition comparisons, together with an explanation of the peer selection methodology and the development stage of each peer included; and • Slide 7 – inclusion of a reference to Appendix Data Sources, which provides underlying information on Rare Earth Oxide (REO) prices. This announcement has been approved for release by the Company Secretary. For further information please contact: Dr Mark Cooksey MD & CEO ABx Group +61 447 201 536 mcooksey@abxgroup.com.au www.abxgroup.com.au ASX Announcement 25 March 2026 ASX: ABX ASX:ABX Heavy Rare Earths: Supplying light and heavy rare earths from Tasmania into Western supply chains PDAC Convention Metro Toronto Convention Centre, Canada Monday, 2 March 2026 ASX:ABX DISCLAIMER This presentation has been prepared by ABx Group Limited ACN 139 494 885 (“ABx” or the “Company”). It should not be considered as an offer or invitation to subscribe for or purchase any securities in the Company or as an inducement to make an offer or invitation with respect to those securities. No agreement to subscribe for securities in the Company will be entered into on the basis of this presentation. This presentation contains forecasts and forward looking information. Such forecasts and information are not a guarantee of future performance, involving unknown risks and uncertainties. Actual results and developments will almost certainly differ materially from those expressed or implied. ABx has not audited or investigated the accuracy or completeness of the information, statements and opinions contained in this presentation. Accordingly, to the maximum extent permitted by applicable laws, ABx makes no representation and can give no assurance, guarantee or warranty, express or other implied, as to, and take no responsibility and assume no liability for, the authenticity, validity, accuracy, suitability or completeness of, or any errors in or omission, from any information, statement or opinion contained in this presentation. You should not act or refrain from acting in reliance on this presentation material. This overview of ABx does not purport to be all inclusive or to contain all information which its recipients may require in order to make an informed assessment of the Company’s prospects. You should conduct your own investigation and perform your own analysis in order to make an informed assessment of the company’s prospects. You should also conduct your own investigation and perform your own analysis in order to satisfy yourself as to the accuracy and completeness of the information, statements and opinions contained in this presentation and making any investment decision. Competent Person Statement The information in this report that relate to Exploration Information and Mineral Resources are based on information compiled by Ian Levy who is a member of The Australasian Institute of Mining and Metallurgy and the Australian Institute of Geoscientists. Mr Levy is a qualified geologist and a director of ABx Group Limited. Mr Levy has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity, which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Levy has consented in writing to the inclusion in this report of the Exploration Information in the form and context in which it appears. 2 ASX:ABX INVESTMENT PROPOSITION 3 Highest proportion of dysprosium and terbium of any clay-hosted resource in Australia  Extraction process already used commercially for several decades Team Experienced and capable Supply Shortage Massive demand growth for rare earths Mineralogy & REE Distribution No acid required for processing Balance of light and heavy REE Pathway to Production Co-located bauxite project at final stages of approval Jurisdiction Commercial forest plantation in Australia Infrastructure Less than 50 km to industrial centre and enabling infrastructure ASX:ABX DEEP LEADS RARE EARTH PROJECT Size Cut-off (ppm TREO-CeO2) Mean TREO (ppm) Mean TREO-CeO2 (ppm) DyTb4 (%TREO) 89 Mt3 350 844 652 4.3% Holes drilled Metres drilled (m) Metres assayed (m) From (m) To (m) 1,077 9,742 3,843 4.2 12.0  Upgraded to 89 Mt announced May 20241  Over 10-fold increase in 12 months  Resource based on only 29% of identified mineralised outline1  May 2025: Temple Bar discovery, 50 km east of Deep Leads2 1ABX ASX Announcement, 2 May 2024 2ABX ASX Announcement, 7 May 2025 341 Mt inferred, 42 Mt indicated and 6 Mt measured 4DyTb = Dy2O3 + Tb4O7 4 ABX ASX Announcement, 20 Jan 2026 ASX:ABX 1.Resource Size and Grade • Amount of Nd and Pr • Amount of Dy and Tb 3. Product Composition • Proportion of Nd and Pr • Proportion of Dy and Tb • Proportion of impurities 2. Processing Cost • Cost of raw materials, labour and utilities • Proportion of Nd and Pr recovered • Proportion of Dy and Tb recovered 5 MIXED RARE EARTH CARBONATE (MREC) PRODUCTION Ionic Adsorption Clay (IAC) Ore 1. Leaching 2. Impurity Removal 3. Precipitation Production Cost Production Cost Product Value Mixed Rare Earth Carbonate (MREC) MREC can be produced from ionic adsorption clay ore using existing commercial 3-step process ASX:ABX 6 MIXED RARE EARTH CARBONATE (MREC) FROM DEEP LEADS: HIGHER PROPORTION OF HEAVY RARE EARTHS 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% ABX MEI VMM BCM Percentage of TREO La2O3 CeO2 NdPr SEG DyTb Other HREO Y2O3 Compared to peers, ABx MREC has:1 • 2.8 to 4.7 times the proportion of Dy+Tb • 1.4 to 2.5 times the proportion of SEG • 3.1 to 6.0 times the proportion of Y2O3 • 3.2 to 10.3 times the proportion of other REO NdPr = Pr6O11 + Nd2O3 SEG = Sm2O3 + Eu2O3 + Gd2O3 Dy+Tb = Tb4O7 + Dy2O3 Other REO = Ho2O3 + Er2O3 + Tm2O3 + Yb2O3 + Lu2O3 1ABX ASX Announcement, 2 December 2025 DyTb Other HREO See Appendix for data sources ASX:ABX 7 MIXED RARE EARTH CARBONATE (MREC) FROM DEEP LEADS: HIGHER BASKET PRICE ABx MREC basket price is 17% to 51% higher than peers, due to higher proportions of higher value rare earths1 Price source: SMM, 26 November 2025 Other REO = La2O3 + CeO2 + Sm2O3 + Eu2O3 + Gd2O3 + Ho2O3 + Er2O3 + Tm2O3 + Yb2O3 + Lu2O3 NdPr, $21.46 NdPr, $23.74 NdPr, $29.00 NdPr, $28.10 Other REO, $7.44 Other REO, $1.47 Other REO, $2.13 Other REO, $3.10 DyTb, $14.16 DyTb, $3.38 DyTb, $4.28 DyTb, $5.48 $0 $5 $10 $15 $20 $25 $30 $35 $40 $45 $50 ABX MEI VMM BCM Basket Price (USD/kg) NdPr Other REO DyTb 1ABX ASX Announcement, 2 December 2025 See Appendix for data sources ASX:ABX 8 PATHWAY TO PRODUCTION: RAPID PROJECT ADVANCEMENT Extensive exploration for bauxite in northern Tasmania Commenced exploration drilling for rare earths on existing exploration leases Re-analysis of previous bauxite assay results Re-assaying of existing samples for rare earths First ANSTO metallurgical results, indicating ionic adsorption clay Signed MoU with Ucore Maiden rare earths resource estimate Most recent resource estimate: 89 Mt1 at 844 ppm TREO EL27/2022 & EL28/2022 exploration leases granted Mining of bauxite at Bald Hill New rare earths province discovered in EL27/2022 Maiden MREC produced EL25/2022 exploration lease granted 2021 2022 2023 2024 2020 2010 - 2019 2025 2026 First column leach results 141 Mt inferred, 42 Mt indicated and 6 Mt measured ASX:ABX 9 PERMITTING Mining (2016) Rehabilitated mine site (2017)  ABx mined bauxite in northern Tasmania from 2014 to 2020, and sold the product to cement and fertiliser plants. Customer demand is ongoing1  Similar bauxite resource overlays Deep Leads rare earth resource  Bauxite mining operations will expose rare earth mineralisation and potentially enable rare earths project to be fast tracked  Bauxite sales will provide cashflow for funding rare earths development  Bauxite mining licence application submitted  EPA approved Environmental Permit  Planning permit approved by Meander Valley Council, subject to some conditions  Mineral Resources Tasmania granted Mining Lease 2142P/M 1ABx ASX Announcement, 11 September 2023 Images of Bald Hill Project near Campbell Town, Tasmania ASX:ABX 10 DEEP LEADS: OUTSTANDING JURISDICTION AND LOCATION  Deep Leads located in =commercial hardwood plantation, close to town of Launceston and Bell Bay port  Australian supply highly attractive to global customers  ABx has conducted exploration and mining in region for over 10 years Deep Leads Commercial plantation forest area in Tasmania, Australia ASX:ABX 11 SIGNIFICANT INFRASTRUCTURE LOCALLY AVAILABLE Infrastructure Transport Less than 20 km to major highway Less than 100 km to deepwater Bell Bay port Labour Less than 50 km to Launceston (pop 65,000) Water High availability in Tasmania Energy Close to major transmission lines Greater than 90% of Tasmania energy demand generated by renewables1 12018-23, Open Electricity ASX:ABX 12 PATHWAY TO PRODUCTION: STRATEGIC & OFFTAKE PARTNERSHIPS Offtake Interest  Executed MOU1 for offtake and potential investment with Ucore, who is undertaking technology transfer from demonstration scale to commercial scale rare earth oxide separation in North America, with financial support from US Department of Defense and Canadian government Strategic Investor Interest  Engaging with deep-pocketed long-term investors with strategic interest in rare earths supply chain Government Support  Engaged with the Australian and Tasmanian governments’ critical minerals strategies – potential for the company to receive financial support Ucore RapidSX demonstration plant in Kingston, Canada 1ABx ASX Announcement, 4 September 2024 ASX:ABX 13 ANTICIPATED PROJECT MILESTONES Project Activities 2026 2027 2028 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Resource Drilling Metallurgical Studies Engineering Studies Environmental Approvals Demonstration Project Commercial Project ASX:ABX INVESTMENT PROPOSITION 14 Highest proportion of dysprosium and terbium of any clay-hosted resource in Australia  Extraction process already used commercially for several decades Team Experienced and capable Supply Shortage Massive demand growth for rare earths Mineralogy & REE Distribution No acid required for processing Balance of light and heavy REE Pathway to Production Co-located bauxite project at final stages of approval Jurisdiction Commercial forest plantation in Australia Infrastructure Less than 50 km to industrial centre and enabling infrastructure ASX:ABX 15 www.abxgroup.com.au Suite 2, Level 11, 385 Bourke St Melbourne VIC 3000 Australia Phone: +61 3 9692 7222 E: investors@abxgroup.com.au Mark Cooksey Managing Director and CEO E: mcooksey@abxgroup.com.au ASX:ABX 16 APPENDIX – DATA SOURCES Rare earth oxide (REO) prices • All REO except Tm2O3: SMM, 26 November 2025. Ex-works including 13% VAT • Tm2O3: Ginger International Trade & Investment, 27 November 2025 (SMM price not available) Rare earth oxide ABX MEI1 VMM2 BCM3 La2O3 18.19 57.60 48.16 34.70 CeO2 5.79 1.40 0.56 8.90 NdPr 27.67 30.60 36.53 36.20 SEG 11.24 4.50 5.75 8.00 DyTb 4.70 1.00 1.33 1.70 Other REO 5.36 0.52 1.00 1.70 Y2O3 27.05 4.50 6.66 8.70 Total 100.0 100.0 100.0 100.0 Stage Exploration Exploration Exploration Exploration Study Level - PFS PFS Scoping NdPr = Pr6O11 + Nd2O3 SEG = Sm2O3 + Eu2O3 + Gd2O3 DyTb = Tb4O7 + Dy2O3 Other REO = Ho2O3 + Er2O3 + Tm2O3 + Yb2O3 + Lu2O3 1Meteoric Resources, ASX Announcement, Table 2, 29 Feb 2024 2Viridis Mining & Minerals, ASX Announcement, Table 3 (Southern Complex), 12 Dec 2024 3Brazilian Critical Minerals, ASX Announcement, Figure 3, 11 Nov 2024 Peers shown are those that meet the following criteria: • Publicly reported leaching tests indicated that the resource contains a significant proportion of ionic rare earths, i.e. numerous leach tests achieving more than 50% rare earth extraction under the conditions listed in table below • An MREC sample has been produced, and the results publicly reported, by leaching under conditions listed in table below, followed by impurity removal and MREC precipitation, both by raising the pH, with no other beneficiation or processing steps; • Deposit is not in China, Myanmar or Laos Parameter Definition Leachate Salt, e.g. ammonium sulfate, magnesium sulfate pH 4 or above Temperature Room Pressure Ambient Leach Time 30 minutes maximum