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Powering Australia's AI-Driven Future Through Innovative Electrical Infrastructure Solutions AGM Presentation | October 2025 1
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We are the essential enablers of Australia’s electrified future While the world focuses on new technologies, such as solar farms, high-speed data networks, and electric vehicles, we build the fundamental infrastructure that makes them work. Our business is built on a simple truth: nothing happens without power, and power needs a reliable, intelligent network to be distributed. We are a manufacturer and solutions provider that is integral to this critical network, providing the essential electrical backbone for major projects across energy, data, and defence. Mayfield is not just a supplier; we are the foundation upon which progress is built. 2
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Mayfield is involved across the Key Phases of the Electrification Journey Design → Install → Service & Maintain → Modernise → Replace 3
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History • Established in 1936 as F.R. Mayfield Pty Ltd, a South Australian switchboard builder serving oil and gas, mining, and processing industries • 80+ years building a reputation for dependability and technical expertise in Australia's most demanding electrical environments • Management buyout 2012 repositioned the business for growth • ASX listing 2020 as Mayfield Group Holdings, integrating manufacturing, product solutions, and services under one platform • Today our heritage of solving complex electrical infrastructure challenges positions us to serve critical infrastructure across data centres, renewable energy, defence, and industrial operations 4
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The Essential Infrastructure Behind Australia's Progress Mayfield Group Holdings (ASX: MYG) Australia's leading manufacturer and service provider of critical electrical infrastructure 5 Business Units Capital Structure ASX Code MYG ASX Share Price $ 1.651 IPO Date 18 Nov 2020 Shares on issue 95.2 m 2 Market Cap $ 157.98 m1 1 As at Wednesday 22nd October 2025 2 Figure includes BE Switchcraft allocation Mayfield Industries: Manufacturing & integrated services BE Switchcraft: Commercial sector electrical solutions Power Parameters: Critical power equipment & testing A TI Australia: Communications & control systems Perth Adelaide Melbourne Sydney Brisbane Manufacturing Service Operations 2 Year Share Price $0.00 $0.20 $0.40 $0.60 $0.80 $1.00 $1.20 $1.40 $1.60 $1.80 $2.00 Aug 2024 Dividend $0.020 Jan 2025 Dividend $0.010 Special Dividend $0.053 Jun 2025 Announce acquisition of BE Switchcraft Aug 2025 Dividend $0.022
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FY25 Performance 6
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FY25 Financial Snapshot Revenue: $118.1M (↑37.9% from FY24: $85.7m) EBITDA: $11.5M (↑73% from FY24: $6.65m) Profit Before Tax: $9.9M (↑more than doubled from FY24) Net Profit After Tax: $6.8M (↑32% from FY24: $5.1m) Strong Cash Position: $16.9M providing strategic flexibility Total dividends: 8.3c per share, including 5.3 cents special dividend Manufacturing Revenue Growth: 54% driving overall performance Share Price Appreciation: From $0.67 to $1.05 over the reporting period 7
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FY25 Operational Highlights • Order Book: $115 million with $850 million near-term prospects as at 30th Sep 2025 • Margin Enhancement: Achieved as project risk profiles matured and operational efficiencies delivered cost reductions • Data Centre Expansion: AI infrastructure projects emerged as major revenue contributors • LEAN Implementation: Enhanced production capabilities for larger, more complex projects • Strategic Acquisition: BE Switchcraft ($7m), completed end August 2025 • Capacity Expansion: 20,000 sqm Perth development site secured for Western Australia growth 8
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Our Business 9
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Delivering Profitable Growth & Returns 10 0 2 4 6 8 10 12 0 2 4 6 8 10 12 14 FY2023 FY2024 FY2025 EBITDA Performance & Margin EBITDA ($m) EBITDA Margin (%) 0 20 40 60 80 100 120 140 FY2023 FY2024 FY2025 Revenue Growth ($m) 0 20 40 60 80 100 120 140 160 FY2023 FY2024 FY2025 Work Won / Order Book ($m) 0 1 2 3 4 5 6 7 8 9 FY2023 FY2024 FY2025 Dividend Track Record (c) 2025 Dividend Included a special dividend of 5.3c
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Why Invest in Mayfield? 11 • Exceptional Growth Trajectory • 38% revenue growth FY24-FY25 from $85.7M to $118.1M • 73% EBITDA growth FY24-FY25 with expanding margins (7.76% to 9.74%) • Massive Market Opportunity • $965M pipeline opportunity ($115m Order Book + $850m in near-term prospects) • Positioned in high-growth sectors: Data Centres, Renewables, Defence • Strong Financial Foundation • Debt-free balance sheet with $16.3M cash as at 30 June 2025 • Consistent track record of sharing strong financial performance with shareholders • Unique Market Position • Only ASX-listed pure-play electrical infrastructure manufacturer • 80+ year heritage with blue-chip customer relationships • Clear Growth Catalysts • AI/Data centre boom driving unprecedented power demand • Manufacturing expansion completed, communications growth phase commencing • Strategic M&A pipeline with strong balance sheet capacity
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Transformational Value Creation Mayfield’s transformation has been driven by successful investment and optimisation to unlock value and provide a strong foundation for growth across Australia’s buoyant data, electrification and critical control and communications sectors. Our strategic advancement has streamlined and strengthened our business units, delivered more comprehensive offerings to our customers, expanded our manufacturing capabilities, and created a scalable platform for growth. 12
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The 3-Pillar Strategy Pillar 1: Manufacture • Ongoing demand for switchboards • Infrastructure scaled (34,400m²) • Customer base expanded • Operational excellence achieved • Status: Generating returns Pillar 2: Product Solutions • Comprehensive power portfolio • National service capability • Technology partnerships secured • Integration with manufacturing • Status: Supporting growth Pillar 3: Critical Control & Communications • High-growth market opportunity • Leveraging manufacturing success • Customer relationships established • Technology capabilities ready • Status: Unlocking new growth 13
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Our Integrated Ecosystem 14 Mayfield Industries • Designs, manufactures, and services the physical hubs of any electrical system, including switchboards, transportable switchrooms, and kiosks. We now integrate our maintenance and commissioning services directly with our manufacturing arm for a seamless, whole-of-life solution. BE Switchcraft • This recent acquisition strengthens our manufacturing capabilities and provides direct entry into the commercial sector. BE Switchcraft's expertise in energy management systems and building automation is a perfect complement to our heavy industrial focus. A TI Australia • Provides the communications and control systems, enabling remote monitoring and management of assets. Power Parameters • Supplies the critical power components like UPS systems, batteries, and test instruments, ensuring a reliable network. We are not a single-product company . We are a total solutions provider, building and maintaining the foundational systems that power Australia's future.
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Balanced Portfolio Across High-Growth Sectors 15 Data Centres • AI driving unprecedented demand • Hyperscale & edge deployments • Critical power & cooling systems • Customers: Major cloud providers Energy & Renewables • Grid-scale solar & wind farms • BESS integration & control • Transmission infrastructure • $37B investment nationwide Resources & Mining • Mine site electrification • Processing plant infrastructure • Remote power systems • Critical minerals focus Defence & Government • DISP accredited supplier • Sovereign capability priority • Critical infrastructure Infrastructure • Hospitals, airports, transport • Essential services • Education facilities • Water & utilities
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Future Growth Strategy 16 Organic Growth InitiativesWA Expansion: 20,000m² facility development LEAN Implementation: Targeting 15% efficiency gains in SA Service Growth: Leveraging installed base for recurring revenue Product Development: BESS and advanced control systems Strategic M&A Program East Coast: Manufacturing footprint expansion Integration: BE Switchcraft demonstrating successful model Capacity: $16.3M cash and very low debt as at 30 June 2025 Market Expansion Commercial Sector: Via BE Switchcraft platform Communications: Leveraging Pillar 3 growth opportunity Geographic: East Coast infrastructure boom We are achieving growth through strategic expansion of our manufacturing, product and service capabilities to meet high demand in the sectors we operate in.
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Our Competitive Advantage 17 Our differentiation in the market is not based on a single factor, but on a combination of strategic skills and assets that create a significant moat around our business. Integrated Model: • Unlike many competitors who focus on a single product or service, we offer a "whole-of- project-life" solution, from initial design and manufacturing to ongoing maintenance and service. Australian Manufacturing Capability: • With local manufacturing facilities in Edinburgh, SA, and Henderson, WA, we control our supply chain, ensuring quality, reliability, and security. This is a critical advantage for our clients in Defence and other national security sectors. T echnical Expertise: • We have over 80 years of heritage and a deep reservoir of intellectual property, including licensing agreements with global leaders like Schneider Electric. This allows us to deliver high-quality, type- tested solutions that meet the most stringent standards. Financial Strength: • Our debt-free balance sheet provides us with the agility to pursue organic growth and strategic acquisitions without the constraints of external financing.
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Experienced Leadership, Strong Governance Board of Directors Simon Higgins (Chairman): Former CEO EC&M (acquired by ASX:GNP), extensive infrastructure experience Andrew Rowe (MD/CEO): Public and private engineering & energy sector leadership Lindsay Phillips: Private equity expertise, chartered accountant Alan Steele: Schneider Electric executive, operational excellence, inaugural CEO Management T eam Deep industry expertise across all business units Proven track record of operational improvement Successfully integrated BE Switchcraft acquisition Delivered manufacturing expansion on time and budget Governance Standards Independent board majority ASX Corporate Governance Principles ISO 9001, 14001, 45001 certifications and DISP accreditation Regular stakeholder engagement Ownership Nightingale Partners: 41.9% Board & Management: Aligned interests Institutional & Retail: Growing register 18
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Environmental, Social, and Governance (ESG) • Environmental Leadership: Our products are key enablers of the renewable energy transition. We are also investing in our own sustainability, with a 200kW solar and battery installation planned for our main facility. • Social Impact: We are a significant employer in Australia, supporting over 322 employees and investing in apprenticeship programs to build local skills. • Governance Excellence: We adhere to the highest standards of ASX governance, with an independent board and a strong focus on risk management, transparency, and compliance. We have an ISO 14001 certification for environmental management. 19
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Compelling Value Proposition - Why Now? ✓ Platform For The Future • Manufacturing expansion complete and delivering profitable returns • Communications growth phase commencing in high growth sector • Profitability and margins expanding ✓ Multiple Growth Catalysts • AI/Data centre boom accelerating • Energy transition infrastructure spend • Increased defence spending • M&A possibilities ✓ Proven Execution • Delivered on strategic promises • Successfully integrated acquisitions • Consistent financial improvement • Strong operational metrics ✓ Attractive Valuation • Trading at a discount to the growth rate • Below the replacement cost of assets • Good dividend yield • Re-rating potential as growth accelerates 20
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Mayfield Group Holdings offers investors unparalleled exposure to Australia's electrification journey, surging energy demand driven by AI, data centres, and transport networks. With our three-pillar strategy, Australian manufacturing advantage, and strategic positioning across high-growth sectors, we provide a unique opportunity to capitalise on the nation's digital transformation and increasing power requirements. 21
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Disclaimer 22 Some of the information contained in this presentation contains “forward-looking statements” which may not directly or exclusively relate to historical facts. These forward-looking statements reflect the current intentions, plans, expectations, assumptions and beliefs of Mayfield Group Holdings (“MYG”) about future events and are subject to risks, uncertainties and other factors, many of which are outside the control of MYG. Important factors that could cause actual results to differ materially from the expectations expressed or implied in the forward-looking statements include known and unknown risks. Because actual results could differ materially from MYG’s current intentions, plans, expectations, assumptions and beliefs about the future, you are urged to view all forward-looking statements contained in this presentation with caution and not to place undue reliance on them. No representation is made or will be made that any forward-looking statements will be achieved or will prove to be correct. MYG does not undertake to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise. Past performance information given in this presentation is given for illustrative purposes only and should not be relied upon as (and is not) an indication of future performance. This presentation is for information purposes only. It is not financial product or investment advice or a recommendation, offer or invitation by MYG or any other person to subscribe for or acquire MYG shares or other securities. The presentation has been prepared without considering the objectives, financial situation or needs of the reader. Before making an investment decision, prospective investors should consider the appropriateness of the information having regard to their own objectives, financial situation and needs, and seek the appropriate professional advice. Statements made in this presentation are made as at the date of the presentation unless otherwise stated. The information in this presentation is of a general background nature and does not purport to be complete. It should be read in conjunction with MYG’s other periodic and continuous disclosure announcements.
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ASX:MYG | mayfieldgroup.com.au 23