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Australia’s leading underground coal mining solutions partner FY26 RESULTS PRESENTATION 26 AUGUST 2026 MASTERMYNE GROUP LIMITED
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INVESTOR PRESENTATION | MASTERMYNE 2 FY26 Highlights UNDERLYING EBITDA $20.3m +47.1% vs pcp Above top end of guidance range provided at 1H FY26 results REVENUE $237.7m +13.1% vs pcp Above top end of guidance range provided at 1H FY26 results UNDERLYING NPBT $15.7m +148.0% vs pcp ORDER BOOK (30 Jun 26) $432m¹ +37.6% on FY25 NET CASH (30 Jun 26) $46.5m F25: $29.1m INVESTOR PRESENTATION | MASTERMYNE 2 ¹ Including potential contract extensions totalling $178m OPERATING CASHFLOW $20.3m +20.1% vs pcp CONTRACT MOMENTUM Glencore, Yancoal and Anglo American extensions and awards reinforce orderbook. New Dendrobium mining services contract awarded post year end valued at up to $255m. Higher activity levels across key labour solutions and strata consolidation drive strong results DISTRIBUTION AGREEMENT Extension of exclusive distribution agreement with Jennmar Holdings for critical strata consolidation products to 2047. WORKFORCE GROWTH SUPPORTING CONTRACT WINS Increased headcount from 640 to 689 on the back of new contracts and commencement and ramp-up of work at GM³’s Appin mine , while maintaining focus on safe delivery.
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INVESTOR PRESENTATION | MASTERMYNE 3 Business Overview [Brief explanation of image] Mastermyne Offices & Facilities A. Mackay B. Brisbane C. Newcastle D. Wollongong Operating through the Mastermyne and Wilson Mining brands, Mastermyne Group assists clients with safe, efficient development and production at longwall and bord & pillar underground coal mines across Australia's east coast Mastermyne is a specialist provider of underground coal mining solutions High technical capability combined with a reputation as experts in strata consolidation Tier 1 client portfolio, predominantly blue-chip mine owners Diversified project portfolio — typically active across 12–15 mines at any time Extensive coverage across all three major coal basins in New South Wales and Queensland Long-established client relationships built over many years Industry leadersWho we are
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INVESTOR PRESENTATION | MASTERMYNE 4 Market-Leading Solutions • Provides project management, technical expertise, experienced labour and specialist equipment to undertake development, production and ancillary support services e.g. ventilation, conveyors, secondary support and plant maintenance. Strata Consolidation • Enables clients to minimise longwall production downtime and enhance safety through the application of specialist cavity fill and resin injection products to consolidate the geological strata underground. Includes exclusive supply of critical products in the Australian coal sector until 2047. Products • Specialist products and materials, including fabricated steel doors and structures to manage airflow; and grouts and powders for seal construction. Innovation pathway to grow product range through offering improved operational efficiency and safety outcomes for clients. Integrated cross-sell business model Mining Services
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INVESTOR PRESENTATION | MASTERMYNE 5 Profit & Loss Revenue up 13% and EBITDA up 47% above upper end of FY26 guidance ranges provided at 1H FY26 results of $230m and $18.0m respectively 28% uplift in EBITDA margin, supported by favourable revenue mix and cost discipline Non-underlying items reduced NPAT by $8.8m (provision for $7.6m legal penalties plus costs; M&A related costs; asset impairment; and inventory adjustment) Revenue and earnings growth from continuing operations exceed upper end of guidance Change (%)FY25FY26$ Millions 13%210.2237.7Revenue 47%13.820.3Underlying EBITDA¹ 28%6.6%8.5%EBITDA Margin (%) (30%)(7.3)(5.1)Depreciation & Amortisation 135%6.515.3Results from Operating Activities 363%(0.2)0.4Net Finance Income/(Expenses) 148%6.315.7Underlying Net Profit Before Income Tax 88%(2.4)(4.7)Income Tax Expense 186%3.911.0Underlying Net Profit after Income Tax 456%(1.6)(8.8)Non-underlying Expenses (1%)2.32.2Profit from Continuing Operations 57%(0.6)(0.2)Loss from Discontinued Operations 17%1.72.0Total Comprehensive Income 1 Earnings before net finance expenses, income tax, depreciation & amortisation
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INVESTOR PRESENTATION | MASTERMYNE 6 Financial Performance 210.2 237.7 FY25 FY26 +13% Revenue ($m) 13.8 20.3 FY25 FY26 +47% Underlying EBITDA ($m) 6.3 15.7 FY25 FY26 +148% Underlying Net Profit before Tax ($m) 3.9 11.0 FY25 FY26 +186% Underlying Net Profit after Tax ($m)
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INVESTOR PRESENTATION | MASTERMYNE 7 Cash flow Strong cash conversion Change %FY25FY26$ Millions 25%18.723.4Net Cashflow from operating activities 363%(0.2)0.4Net Finance Income / (Expense) 119%(1.6)(3.5)Income Tax Paid 20%16.920.3Net Operating Cash Flow (59%)(3.7)(1.5)Net Payments for Property, Plant and Equipment (76%)(2.9)(0.7)Net Repayment of Borrowings (66%)(4.1)(1.4)Payments of Lease Liabilities (67%)0.30.1Proceeds from Sale of Entities and Business -(1.5)-Dividend Paid -(0.6)-Payments for Treasury Shares and Share Buybacks 282%4.416.8Net Increase / (Decrease) in Cash and Cash Equivalents 17%26.030.4Cash and Cash Equivalents at Beginning of Period 55%30.447.2Cash and Cash Equivalents at End of Period Operating cash flow of $20.3m up 20% on pcp Ending cash at $47.2m up $16.8m (+55%) on pcp Current Capital-light model; capex ~2% of revenue, strong free cash conversion
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INVESTOR PRESENTATION | MASTERMYNE 8 Balance sheet summary Balance sheet strength supporting growth agenda JUN-25JUN-26$ Millions 30.447.2Cash 32.539.7Receivables 10.68.5Inventory 11.810.1Property, plant and equipment 11.010.9Intangible asset and goodwill 11.28.1Other assets 107.5124.5Total Assets 17.023.4Payables 1.40.6Borrowings 2.78.7Provisions 12.415.1Other liabilities 33.547.8Total Liabilities 74.076.7Net Assets 29.146.5Net Cash 20c21cNet Tangible Assets per Share (cps) Strong balance sheet with minimal debt and net cash of $46.5m up 60% ($29.1m pcp) Total assets up $17.0m to $124.5m higher cash, receivables Net cash of $46.5m plus undrawn facilities of $30m. $76.5m capacity supports organic growth and selective M&A $30m working capital facility 2-year renewal in July and undrawn as at 30 June 26
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INVESTOR PRESENTATION | MASTERMYNE 9 Safety, People and Sustainability Continuing focus on elevating safety performance through targeted, visible leadership Safety • Safety metrics much improved over past 3 years. • ‘Elevating Safety Performance' priority project focused on improved systems, leadership training and positive safety behaviour culture People • Mastermyne all-employee survey showing strong commitment to the Company’s Keep Safe values and a high level of overall engagement. • Proven recruitment capability to manage growth • Psychosocial risk management project well progressed. Sustainability • Sustainability reporting being implemented in accordance with AASB S2 climate-related disclosures for Group 2 starting FY27. • Sustainability Risks & Opportunities framework developed to support strategic decision-making and resilience.
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INVESTOR PRESENTATION | MASTERMYNE 10 INVESTOR PRESENTATION | MASTERMYNE 10 Mastermyne’s Project Portfolio Diversified client project portfolio and longstanding relationships with blue-chip mine owners ¹ Products are typically supplied on an ongoing purchase order basis. COAL TYPEACTIVITY & CONTRACT EXPIRY ¹STATEMINE PROJECT(S)RELATIONSHIP SINCECLIENT MetallurgicalMining Services (2027); Strata Consolidation (2029); ProductsQLDAquila, Moranbah North, Grosvenor2002 ThermalStrata Consolidation (2027)NSWSpringvale2020 ThermalMining Services (2029); Strata Consolidation (ongoing); ProductsNSWUlan Complex2012 MetallurgicalMining Services (2028); Strata Consolidation (ongoing); ProductsNSWAppin, Dendrobium2025 MetallurgicalMining Services (2027); Strata Consolidation (2026); ProductsQLDCenturion2012 ThermalMining Services (2026); Strata Consolidation (2026); ProductsNSWNarrabri2017 ThermalMining Services (2028); Strata Consolidation (2028); ProductsNSWAshton, Moolarben2021
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INVESTOR PRESENTATION | MASTERMYNE 11 Order book of $432m¹ including contract extension options of $178m Strategically targeted pipeline of ~$1.5bn identified opportunities aligned with core capabilities ~$823m of pipeline considered near-term expected to be awarded in FY27 Significant opportunities expected to convert in 1H FY27 Strong FY27 revenue visibility through combination of order book and post year end contract award at Dendrobium with gross revenues of $85m in the initial two-year term and up to $255m in total Order Book and Pipeline Strong FY27 revenue visibility $823m $709m Near term² Medium term $1.5bn Up 67% from $0.9bn at 30 Jun 25 $254m $178m Current Term Extension $432m Up 38% from $314m at 30 Jun 25 Order Book @ 30 Jun 26 Pipeline @ 30 Jun 26 $254m ¹ Order book does not include Dendrobium mi ning services contract awarded post year end with gross revenues of $85m in the init ial two-year term and up to $255m in total. ² Near term refers to where a decision to award a contract is expected within 12 months
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INVESTOR PRESENTATION | MASTERMYNE 12 Strategic Direction Pursuing a disciplined strategy of growth and diversification Continuing to expand work scope and product offerings with current clients, whilst also pursuing opportunities for expansion into adjacent activities with strong strategic fit and returns Winning new work Create and convert pipeline opportunities, leveraging long- standing client relationships and strategic partnerships, further diversifying revenues across client portfolio. Cross-sell & scope expansion Expand presence at existing mines by cross-selling services and growing project scope Competitive advantage Invest in technical expertise, innovative products and efficiency improvements to drive new revenue streams and margin growth Acquisitions with strategic fit Leverage well-capitalised balance sheet and relationship with majority shareholder M Group to pursue transformative M&A that extends capabilities, geography or service lines, with selective focus on adjacent opportunities and attractive risk-adjusted returns. Disciplined capital deployment Maintain diligent financial screening — acquisitions must meet return hurdles and integrate with MYE's operating model and culture Organic Growth M&A Growth
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INVESTOR PRESENTATION | MASTERMYNE 13 Outlook CONTINUED GROWTH IS UNDERPINNED BY: Expanded order book and pipeline, with significant near- term opportunities to convert in 1H FY27, provide improved earnings visibility and reflect continued client confidence Activity levels ramping up at several Australian longwall mines, driving additional demand for mining services, strata consolidation and products Supportive industry conditions: strong coal demand, higher coal prices and rising underground mine production Long-term secure arrangements for the supply of market -leading products from strategic partners including Jennmar’s strata consolidation products exclusive to 2047. Balance sheet strength, with total liquidity available of $76.5m, provides flexibility for organic and M&A growth Momentum built through FY26 set to continue into FY27 INVESTOR PRESENTATION | MASTERMYNE 13
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INVESTOR PRESENTATION | MASTERMYNE 14 Market Profile ASX Data MYEASX Code $0.58Share Price (24 08 2026) 308.8mShares on issue $179.1mMarket Capitalisation (24 08 2026) $46.5mNet cash (30 06 2026) $132.6mEnterprise Value Shareholders 54%M Group 7%Mastermyne Co-founders 1%Employees Share Trust 38%Others INVESTOR PRESENTATION | MASTERMYNE 14 Board & Management Caroline ChanIndependent Chair Jeffrey WhitemanCEO & MD Andrew WattsNon-Executive Director Ben GargettM Group Nominee Non-Executive Directors Wayne Bull1 Matt RuhlChief Financial Officer 1 Andrew Kazakoff is Alternate Director for Wayne Bull Share Price – 12 months to 24 Aug 26 $0.00 $0.10 $0.20 $0.30 $0.40 $0.50 $0.60 $0.70
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Appendices
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INVESTOR PRESENTATION | MASTERMYNE 16 Reconciliation of underlying earnings to statutory financials Underlying earnings (non-IFRS) adjustments: › FY26 EBITDA: $9.3m comprising: $8.1m includes provision of $7.3m for legal penalties and associated costs, $2.0m impairment of legacy shuttle car assets held for sale; $1.3m for Merger & Acquisitions (M&A) related costs; ($2.0m) reversal of a prior inventory write-down; and ($0.4m) tax on adjustments › FY25 EBITDA: $1.4m inventory write-down; $0.7m of impairment of legacy assets held for sale; $0.1m for legal costs; and ($0.6m) tax effect on adjustments FY25FY26 $ million Non-recurring expensesNon-recurring expenses Underlying Results Inventory provision Impairment of EquipmentLegal costsStatutory Results Underlying Results M&A related costs Inventory provision Impairment of Equipment Legal Penalty & costs Statutory Results 210.2---210.2237.7----237.7Revenue 13.81.40.70.111.620.31.3(2.0)2.08.111.1EBITDA (7.3)---(7.3)(5.1)---(5.1)Depreciation & Amortisation 6.51.40.70.14.315.31.3(2.0)2.08.16.0Results from operating activities (0.2)---(0.2)0.4---0.4Net finance income / (expense) 6.31.40.70.14.115.71.3(2.0)2.08.16.4Profit before tax (2.4)(0.4)(0.2)(0.0)(1.8)(4.7)(0.4)0.6(0.6)(0.1)(4.2)Income tax expense 3.91.00.50.12.311.00.9(1.4)1.48.02.2Net profit after tax from continuing operations (0.6)---(0.6)(0.2)---(0.2)Loss after tax from discontinued operations 3.31.00.50.11.710.80.9(1.4)1.48.02.0Total comprehensive profit for the period
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INVESTOR PRESENTATION | MASTERMYNE 17 The following disclaimer applies to this presentation and any information provided regarding the information contained in this presentation (the Information). You are advised to read this disclaimer carefully before reading or making any other use of this presentation or any information contained in this presentation. Except as required by law, no representation or warranty, express or implied, is made as the fairness, accuracy, completeness, reliability or corre ctness of the Information, opinions and conclusions, or as to the reasonableness of any assumption contai ned in this document. By receiving this document and to the extent permitted by law, you release Mas termyne Group Limited (“Mastermyne”), and its officers, employees, agents and associates from any liability (including in respect of direct, indirect or consequential loss or damage or loss or damage arisi ng by negligence) arising as a result of the reliance by you or any other person on anything contained in or omitted from this document to the extent permitted by law. Statements contained in this material, particular ly those regarding the possible or assumed future performance, costs, dividends, retu rns, production levels or rates, prices, reserves, potential growth of Mastermyne, industry growth or other trend projections and any estimated company earnings are or may be forward looking statements. Such statements rel ate to future events and expectations and as such involve known and unknown risks and uncertainties, many of which are outside the control of, and are unknown to, Mastermyne and its officers, employees, agents or associates. In particular, factors such as variable climatic conditions and regulatory decisions and processes may cause or may affect the future operating and financial performance of Mastermyne . Actual results, performance or achievement may vary materially from any forward -looking statements and the assumptions on which those statements are based. The Information also assumes the success of Mastermyne’s businessstrategies. The success of the strategies is subject to uncertainties and co ntingencies beyond Mastermyne’s control, and no assurance can be given that the anticipated benefits f rom the strategies will be realised in the periods for which forecasts have been prepared or otherwise. Gi ven these uncertainties, you are cautioned to not place undue reliance on any such forward looking statements. Mastermyne undertakes no obligation to revise the forward-looking statements included in this presentation to reflect any future events or circumstances. In addition, Mastermyne’s results ar e reported under Australian I nternational Financial Reporting Standards, or AIFRS. This presentation i ncludes references to EBITDA, EBITA and NPAT. These references to EBITDA, EBITA and NPAT should not be viewed in isolation or considered as an indication of, or as an alternative to, AIFRS measures or as an indic ator of operating performance or as an alternative to cash flow as a measure of liquidity. To the extent permitted by law, the distribution of this information in jurisdictions outside Australia may be restricted by law and you should observe any such r estrictions. This Information does not constitute investment, legal, accounting, regulatory, taxation or other advice and the Information does not take into account any investment objectives or legal, accounti ng, regulatory, taxation or financial situation or particular needs. You are solely responsible for forming your own opinions and conclusions on such matters and the market and for making your own independent assessment of the Information. You are solely responsible for seeking independent profes sional advice in relation to the Information and any action taken on the basis of the Information. No responsibility or liability is accepted by Mastermyne or a n yo fi t so f f i c e r s ,e m p l o y e e s ,a g e n t so ra s s o c i a t e s ,nor any other person, for any of the Information or for any action taken by you or any of your officers, employees, agents or associates on the basis of the Information. Non-IFRS Financial Information Mastermyne uses non-IFRS financial information to reflect the Group’s financialperformance. For further information on non-IFRS information including a reconciliation to statutory financial information, calculation methodology and reasons why the non-IFRS financial information is useful, please refer to the Directors Report in the Mastermyne Half Year Report for December 2025. Disclaimer
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MASTERMYNE GROUP LIMITED Further Information Ben Larsen Investor and Media Relations benl@nwrcommunications.com.au +61 439 789 842 Jeff Whiteman Managing Director and CEO +61 7 4963 0400