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July 30, 2026 Investor Presentation 1Q FY27 New image that dials up robotics
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This presentation and the accompanying oral remarks contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements other than statements of historical facts contained in this presentation and the accompanying oral remarks, including statements regarding our future results of operations and financial position, business strategy, prospective products and the plans and objectives of management for future operations, including, among others, statements regarding the liquidity, growth and profitability strategies and factors and trends affecting our business, including the projected size and growth of markets in which we operate or may operate, are forward-looking statements. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward- looking statements. Without limiting the foregoing, in some cases, you can identify forward-looking statements by terms such as “aim,” “may,” “will,” “should,” “expect,” “exploring,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “would,” “contemplate,” “believe,” “estimate,” “predict,” “potential,” “seek,” or “continue” or the negative of these terms or other similar expressions, although not all forward-looking statements contain these words. No forward-looking statement is a guarantee of future results, performance, or achievements, and one should avoid placing undue reliance on such statements. Forward-looking statements are based on our management’s current expectations, beliefs and assumptions and on information currently available to us. Such beliefs and assumptions may or may not prove to be correct. Additionally, such forward-looking statements are subject to a number of known and unknown risks, uncertainties and assumptions, and actual results may differ materially from those expressed or implied in the forward-looking statements due to various factors, including, but not limited to, those identified in Part II, Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and Part I, Item 1A. "Risk Factors" in our Annual Report on Form 10-K for the year ended March 27, 2026, as any such factors may be updated from time to time in our Quarterly Reports on Form 10-Q and our other filings with the Securities and Exchange Commission (the “SEC”). These risks and uncertainties include, but are not limited to: downturns or volatility in general economic conditions; our ability to compete effectively, expand our market share and increase our net sales and profitability; our reliance on a limited number of third-party semiconductor wafer fabrication facilities and suppliers of other materials; any failure to adjust purchase commitments and inventory management based on changing market conditions or customer demand; the cyclical nature of the semiconductor industry, including the analog segment in which we compete; any downturn or disruption in the automotive market or industry; our ability to successfully integrate the acquisition of other companies or technologies and products into our business; our ability to maintain or improve our gross margins may be adversely affected by decreases in average selling prices of our products, increases in input costs or shifts in product, customer or channel mix; our ability to manage any sustained yield problems or other delays at our third-party wafer fabrication facilities or in the final assembly and test of our products; our ability to accurately predict our quarterly net sales and operating results and meet the expectations of investors; our dependence on manufacturing operations in the Philippines; our reliance on distributors to generate sales; events beyond our control, including conflicts in the Middle East, impacting us, our key suppliers or our manufacturing partners or other third-party suppliers of components, materials or subassemblies; our ability to develop new product features or new products in a timely and cost-effective manner; our dependence on growth in the end markets that use our products, and the impact that slowdowns in such growth, including as a result of volatility in demand for emerging technologies or changes in government incentives, could have on our financial results; the loss of one or more significant customers; our ability to identify, enter and expand in new markets, and to generate returns on such investments; uncertainties related to the design win process and our ability to recover design and development expenses and to generate timely or sufficient net sales or margins; changes in government trade policies, including the imposition of export restrictions and tariffs; our exposures to warranty claims, product liability claims and product recalls; our dependence on international customers and operations; risks, liabilities, costs and obligations related to governmental regulations and other legal obligations, including export/trade control, privacy, data protection, information security, cybersecurity, consumer protection, environmental and occupational health and safety, antitrust, anti-corruption and anti-bribery, product safety, environmental protection, employment matters and tax; the volatility of currency exchange rates; our ability to raise capital to support our growth strategy; our indebtedness may limit our flexibility to operate our business; our ability to retain key and highly skilled personnel; the impact on the market price of our common stock from future sales of our common stock by large stockholders, or the perception that such sales could occur; the impact of restructuring activities on our business and operating results; our ability to protect our proprietary technology and inventions through patents or trade secrets; our ability to commercialize our products without infringing third-party intellectual property rights; disruptions or breaches of our information technology systems or confidential information or those of our third-party service providers; the risks presented by the use of artificial intelligence, machine learning and automated decision-making technologies by us and others; any failure to maintain effective internal control over financial reporting; changes in tax rates or the adoption of new tax legislation; the negative impacts of sustained inflation on our business; and other events beyond our control. Moreover, we operate in an evolving environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to predict all risk factors and uncertainties. You should read this presentation and the documents that we reference completely and with the understanding that our actual future results may be materially different from what we expect. We qualify all of our forward-looking statements by these cautionary statements. All forward-looking statements speak only as of the date of this presentation, and except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements, whether as a result of any new information, future events, changed circumstances or otherwise. This presentation and the accompanying oral remarks include certain non-GAAP financial measures as defined by the SEC rules. These non-GAAP financial measures are provided in addition to, and not as a substitute for or superior to measures of, financial performance prepared in accordance with U.S. GAAP. There are a number of limitations related to the use of these non-GAAP financial measures versus their nearest GAAP equivalents. For example, other companies may calculate non-GAAP financial measures differently or may use other measures to evaluate their performance, all of which could reduce the usefulness of the presented non-GAAP financial measures as tools for comparison. Visuals in this presentation are for representative purposes only and may not be accurate representations of actual or future products or designs. This presentation may not be reproduced, forwarded to any person or published, in whole or in part. Forward-looking statements 2
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Financial & Business Update 3
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▪ Net Sales and Gross Margin above the high end of guidance ▪ EPS at the high end of guidance ▪ Free Cash Flow3 of $14M ▪ Bookings increased quarter-over-quarter 1QFY27 Non-GAAP Financial Highlights 1QFY27 Financial and Business Highlights 1. The May 7, 2026 guidance for 1QFY27 included in this presentation has not been updated and is for historical reference only. 2. Contains non-GAAP financial measures. Allegro has not provided a reconciliation of its 1QFY27 guidance for non-GAAP Gross Margin, non-GAAP Operating Expenses, and non-GAAP Diluted Earnings per Share because estimates of all the reconciling items cannot be provided without unreasonable efforts. It is difficult to reasonably provide a forward-looking estimate between such forward-looking non-GAAP measures and the comparable forward-looking U.S. generally accepted accounting principles (“GAAP”) measures. Certain factors that are materially significant to Allegro’s ability to estimate these items are out of its control and/or cannot be reasonably predicted. 3. Gross Margin, Free Cash Flow and EPS are Non-GAAP measures. Reconciliations of these numbers to the most comparable GAAP measures can be found in the Appendix. Business Highlights Guidance1, 2 Actual3 Net Sales $245M - $255M $259M Gross Margin % 50% - 51% 51.1% EPS $0.19 - $0.23 $0.23 Q1FY27 vs. Q4FY26 Sales grew 7% ▪ Industrial and Other increased 18% ▪ Data Center reached a new quarterly record of 17% of sales, growing 32% QoQ ▪ Auto sales increased 1% with Focus Auto growing 3% Q1FY27 vs. Q1FY26 Sales grew 27% ▪ Industrial and Other sales increased 59% ▪ Design wins in China and North America with large robotics customers ▪ Auto sales increased 15% ▪ Focus Auto sales grew 11% ▪ FQ1 Design wins increased 30% versus a year ago 4
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New Products Industry’s First ASIL-D Power Management IC (PMIC) with Integrated Wheel Speed Sensor Interface • Single-chip power and sensing foundation for next-generation brake-by-wire systems • Simplifies electromechanical braking design by eliminating up to 9 external components • Combines Allegro's deep knowledge in Magnetic Sensors with Power IC excellence to provide application leading solutions 5
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Midpoint of Sales Guidance Implies 26% Year-Over-Year Growth Midpoint of EPS Guidance Implies 88% Year-Over-Year Growth 2QFY27 Financial Guidance 1. The guidance for 2QFY27 included in this presentation is as of July 30, 2026 and has not been updated. Inclusion of the guidance should not be construed as an update or reaffirmation of this guidance as of any later date. 2. Contains non-GAAP financial measures. Allegro has not provided a reconciliation of its 2QFY27 guidance for non-GAAP Gross Margin, non-GAAP Operating Expenses, and non-GAAP Diluted Earnings per Share because estimates of all the reconciling items cannot be provided without unreasonable efforts. It is difficult to reasonably provide a forward-looking estimate between such forward-looking non-GAAP measures and the comparable forward-looking U.S. GAAP measures. Certain factors that are materially significant to Allegro’s ability to estimate these items are out of its control and/or cannot be reasonably predicted. Non-GAAP Guidance1,2 Sales $265M - $275M Gross Margin % 50.75% - 51.75% EPS $0.23 - $0.26 6
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Company Overview Company Overview 7
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Why Allegro Differentiated & durable ALGM technology: #1 in Magnetic Sensing, leading-edge Power ICs Mid-teens sales growth from content expansion and share gains in high growth xEV, ADAS, AI, Data Center, and Robotics markets Extending Magnetic Sensing share with TMR Isolated gate drivers and intelligent motor driver ICs lead share gains in Power Enhanced R&D alignment to megatrends, and a 2x increase in new products, creates a powerful growth engine Target financial model with mid-teens sales growth, gross margins >55%, prudent OPEX management, and >$2.00 earnings per share 8
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Balanced Sales Mix Across Products, Markets, and Geography 1. Reflects Trailing Twelve Months, FQ2 FY26 through FQ1 FY27, actuals. 2. Omdia, MEMS & Sensors Competitive Analysis Database – May 2026. Magnetic Sensing 59% Power 41% #1 Magnetic Sensing Market Leader² Auto 69% Industrial & Other 31% >30 Years Automotive Experience Rest of Asia 29% China 27% Japan 17% Americas 14% Europe 13% 58% | 42% Distribution | Direct Mix Sales by Product¹ Sales by End Market¹ Sales by Geography¹ 9
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Combining Precision Sensing with Integrated Power Leadership Creating differentiated, “sticky” solutions that expand dollar content and drive sustained share gains Magnetic Sensors: Precision Sensing Leadership #1 Market Share Leader Power ICs: Integrated Power Advantage Engineered for Efficiency and Reliability Complete sensing portfolio: Hall, GMR, TMR, Inductive _________________________________________________________________________________________________ Industry-leading accuracy, bandwidth, and power density, enabling precision motor control _________________________________________________________________________________________________ XtremeSense TMR delivers highest accuracy, bandwidth, and greater energy efficiency _________________________________________________________________________________________________ Automotive-grade reliability for accuracy and performance over lifetime _________________________________________________________________________________________________ Proprietary packaging underpins a durable competitive position 1. Third party data and internal estimates. Proven 120V BCD silicon, optimized for true 48V and high-voltage applications _________________________________________________________________________________________________ Unique power innovation delivering high power density and simpler system design _________________________________________________________________________________________________ Single-chip integration—fewer components, faster design cycles _________________________________________________________________________________________________ Best-in-class motor control: quieter, smarter, more efficient 10
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Differentiated Technology & Products Drive Outsized Growth & Share Potential We have a proven track record of leveraging differentiated & durable IP to deliver rapid business growth TMR XtremeSense Tunneling Magnetoresistance 50% fewer components Up to 40% higher efficiency Lower noise, easy to design Power-Thru Isolated Gate Drivers (IGD) Higher accuracy Higher bandwidth Lower power Share gains for position + current sensors 16-bit resolution for smoother motor control _________________________________________________________________________________________ 10MHz current sensors for SiC & GaN _________________________________________________________________________________________________ Longer battery life in robots & wearables _________________________________________________________________________________________________ Unlocks significant smart sensor opportunities Share gains in xEV power + data center power supplies Power conversion with market-leading power density _________________________________________________________________________________________________ Smaller sensor & power ICs to enhance system efficiency _________________________________________________________________________________________________ IGDs that drive either SiC or GaN in 400 to 800V+ systems >$1.0B SAM¹ $3.0B SAM¹ 1. Third party data and internal estimates. 11
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AI Automation ELECTRIFICATION xEV & Energy Infrastructure AUTOMATION ADAS & Robotics An Even Brighter Future: Enhanced Growth Through Stronger Alignment to Megatrends Megatrends fuel strong market growth & rapidly expanding Allegro dollar content AI Data Centers ADVANCED ROBOTICS Humanoids 12
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Megatrends fuel strong market growth & rapidly expanding dollar content We are Leaders in High Growth Automotive & Industrial Markets 1. Based internal estimates and third party data; 2. FY26 – FY31 CAGR Automotive Focus Auto: xEV and ADAS xEV $3.4B SAM¹, 23% CAGR² ADAS $1.5B SAM¹, 10% CAGR² Conventional Powertrain (ICE) $1.2B SAM¹, -5% CAGR² Safety, Comfort and Convenience (SCC) $1.7B SAM¹, 2% CAGR² Industrial & Other Focus Industrial: Data Centers and Robotics Data Center $1.7B SAM¹, 22% CAGR² Broad Industrial $1.5B SAM¹, 9% CAGR² Automation & Robotics $1.8B SAM¹, 34% CAGR² Energy Infrastructure $0.9B SAM¹, 7% CAGR² Focus Areas $8.4B, 21% CAGR Other $5.3B, 2% CAGR Total SAM¹ $13.7B SAM¹, 12% CAGR² 13
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Higher Growth DISRUPTIVE NEW BUSINESSES Mid-teens SHARE GAINS Executing on innovations, driving strong growth potential in >20% CAGR¹ focus markets and applications Innovation & Action Drive ALGM Mid-Teens Sales Growth New Strategies & Focus Drive Share Gains to Support Mid-Teens Sales Growth Growth-oriented, individual sales teams for Auto and Industrial markets ___________________________________________________________________ Greater allocation of R&D $ to megatrend markets and applications ___________________________________________________________________ More innovations & wins in systems with 2-30x dollar content gains² ___________________________________________________________________ Share gains from new TMR Sensors and Isolated Gate Drivers (IGDs) ___________________________________________________________________ Growth from disruptive new business investments begins in FY29+ 1. FY26 to FY31. 2. Internal estimates FY26 FY31 12% SAM GROWTH ¹ CONTENT/VOLUME GAINS 14
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Automotive Broadly trusted by our customers for quality, reliability, efficiency, and performance 15
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Electrification and driving automation fueling Allegro’s growth opportunity FY31 Market Opportunity $7.8B SAM¹, 8% CAGR² 1 Third-party data and internal estimates; 2 FY26 to FY31 Focus Auto $4.9B¹ 18% CAGR² Other Auto $2.9B¹ -1% CAGR² Other Auto Focus Auto Advanced Driver Assist Systems ADAS SAM¹ $1.5B ____________________________________________________ 10% CAGR² Hybrid & Battery Electric Powertrain xEV SAM¹ $3.4B ____________________________________________________ 23% CAGR² Safety, Comfort & Convenience SCC SAM¹ $1.7B ____________________________________________________ 2% CAGR² Internal Combustion Engine ICE SAM¹ $1.2B ____________________________________________________ -5% CAGR² Allegro’s Focus Automotive Markets Offer a $4.9B SAM¹ Growing at 18%² 16
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Broadly trusted by our customers for quality, reliability, efficiency, and performance Over 30 Years of Automotive Innovation xEV Powertrain SCC Safety, Comfort & Convenience Cabin pumps & fans LED lightingHeadlight position Heating/cooling (HVAC) Seat (belts, cooling, motors) Window lift motors Trunk latch position ADAS Advanced Driver Assist Systems Battery management DC-DC converter Electrohydraulic braking (EHB) Electromechanical braking (EMB) On-board chargerHeat pump Electronic parking brake (EPB) Anti-lock braking (ABS) PTC heaters xEV transmission Electric power steering (EPS) Driver monitoringPedal position Traction inverter Starter/generator Brake fluid levelSteer-by-Wire (SbW) Suspension position ICE Powertrain Camshaft Crankshaft Throttle position Clutch/fork position Engine cooling fan Transmission Turbochargers Valve position (EGR) Water pump/valve Vehicle Architectures Zonal Architecture 48V Electrical Architecture 17
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1 S&P Global Powertrain Forecast, Nov. 2025, ICE = ICE, ICE S/S, MHEV, and FCEV, FHEV = FHEV and PHEV, BEV = BEV, REEV, and S eries. 2. Auto Semis & SIA Monthly, TD Cowen, January 2025 & July 2025. Shift to xEV and ADAS Fuels Content Opportunity Expansion and Sales Growth Driving sales growth well beyond vehicle production volume Rapid hybrid and battery electric adoption accelerates demand __________________________________________________________ Advanced ADAS penetration further amplifies content growth xEV Growth and ADAS Adoption² Outpace vehicle production¹ growth FY21 FY26 FY31e ICE FHEV BEV ADAS 18
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xEV and ADAS content expansion drives IC growth Allegro Content Opportunity Per Vehicle is Structurally Increasing 1 Third-party data and internal estimates. FY21 ICE, ADAS, and SCC FY26 xEV, ADAS, and SCC FY31e xEV, ADAS, SCC, 48V, Zonal ~$60 per vehicle¹ ~$40 per vehicle¹ ~$100 per vehicle¹ Current Sensors Isolated Gate Drivers Current Sensors Isolated Gate Drivers Position Sensors Speed Sensors Motor Drivers Position Sensors Speed Sensors Motor Drivers Position Sensors Speed Sensors Motor Drivers 19
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48V Architecture Advantage over 12V 4x Lower current required ___________________________________ 5x Lighter with thinner wires ___________________________________ 16x Less heat generated Catalyst for Allegro’s power IC leadership opening new opportunities Allegro Leading the Shift to True 48V Electrical Architecture 48V IS NOT LIMITED TO JUST AUTOMOTIVE. IT’S POWERING INNOVATIONS ACROSS AI DATA CENTERS, ROBOTICS, AND MANY OTHER INDUSTRIAL SEGMENTS Allegro’s Leadership in 48V Robust Process Technology Automotive-qualified 120V wafer process for reliable, true 48V performance _____________________________________________________________________________________________ Expansive 48V Portfolio Motor drivers, power management ICs, current sensors, and gate drivers designed for fast integration _____________________________________________________________________________________________ Deep Application Expertise Decades of automotive experience enable us to optimize 48V system solutions 48V 12V 20
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Innovations Engineered for Safety-Critical & High-Voltage Environments xEV & ADAS solutions deliver superior accuracy, higher power density, better efficiency, and smaller footprints Automotive Grade by Design Purpose-built, proprietary wafer, packaging, and memory tech Qualified for extreme heat, voltage transients, and ASIL-D Long product lifecycles → trusted by OEMs & Tier-1s Differentiated Technology TMR current sensors accelerate next-gen SiC/GaN power designs Isolated gate drivers reduce size, weight, and design complexity Proprietary 120V BCD process enables true 48V systems Durable Competitive Advantage Innovations deliver safety and reliability for fail-safe operation Sticky design wins in safety- critical applications System level value based on performance and technology 21
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Industrial & Other Allegro delivers innovation, quality, world - wide presence, and customer intimacy 22
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Allegro’s Focus Industrial Markets Offer $3.5B SAM¹ Growing at 27% CAGR² Allegro delivers innovation, quality, world-wide presence, and customer intimacy FY31 Market Opportunity $5.9B SAM¹ at 17% CAGR² 1 Third-party data and internal estimates. 2 FY26 to FY31. AI / Data Center Other Industrial Focus Industrial Automation & Robotics Energy Infrastructure 2-Wheelers, Medical, Power Tools, Consumer, Drones, Appliances SAM¹ $1.8B ____________________________________________________ 34% CAGR² SAM¹ $1.7B ____________________________________________________ 22% CAGR² SAM¹ $1.5B ____________________________________________________ 9% CAGR² SAM¹ $0.9B ____________________________________________________ 7% CAGR² Focus Industrial $3.5B¹ 27% CAGR² Other Industrial $2.4B¹ 8% CAGR² 23
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More fans in the data center, and a strong ramp in current sensor and isolated gate driver adoption AI / Data Center Market Opportunity = $1.7B¹ Growing at >20% CAGR² 1 Third-party data and internal estimates. 2 FY26 to FY31. Up to $425 per rack¹ Up to $150 per rack¹ Up to $20 per rack¹ Motor Drivers Motor Drivers Current Sensors Motor Drivers Isolated Gate Drivers Current Sensors Data Center 2023 12V AI / Data Center 2025 12V & 48V AI / Hyperscaler 2028 48V & 800V 24
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Data Center Innovations Engineered for Power Density and Thermal Efficiency Data centers demand robust, reliable solutions with performance over lifetime Automotive Grade Reliability Proven wafer and packaging technology built for extreme heat, voltage, and noise Long lifetimes in mission-critical industrial environments Solutions to support 48V to 800V architectures Differentiated Technology Current sensing portfolio to meet accuracy, power density, and bandwidth challenges Isolated gate drivers enable more efficient SiC/GaN power systems with 40% space reduction High-efficiency, multi-phase fan drivers Durable Competitive Advantage 10MHz current sensor switches fast to protect critical infrastructure Embedded algorithms in motor drivers deliver low noise, power efficient cooling in air and liquid cooled systems 25
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Household and factory automation opportunity $400M¹ within our target $1.8B SAM¹ Advent of AI Drives 30-fold¹ Content Growth in Robotics 1 Third-party data and internal estimates. Position Sensors Motor Drivers Current Sensors Position Sensors Motor Drivers Current Sensors Position Sensors Motor Drivers Current Sensors Advanced Force & Touch Sensors Household Robot 2023 12V Factory Robot 2026 12V & 48V Humanoid Robot 2030 48V+ Over $150 per robot¹ About $55 per robot¹ About $5 per robot¹ 26
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Robotics Innovations Engineered for Efficiency, Precision, and Reliability Robotics require the same safety-critical solutions we’ve designed for ADAS applications Automotive Grade Reliability 48V technology used in electrified vehicles is the same power architecture being used in many robots Steering and braking solutions, validated over billions of miles, are the same devices delivering high- precision joint actuation Differentiated Technology TMR delivers higher accuracy, better efficiency, and precise motion control in miniaturized packages Integrated, miniaturized chip that combines motor drivers and TMR sensors in a single package Durable Competitive Advantage Embedded algorithms in motor drivers provide smooth, reliable operation Advanced force sensing technology facilitates grip strength management Few TMR solutions with the same technical specs on the market 27
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New Sales growth Mid-Teens Growth Automotive targeted to grow >10% led by 18% ADAS and xEV SAM growth. Industrial targeted to grow at high-teens led by 27% Data Center & Robotics SAM growth. Gross margin²,³ >55% Return to above historical average through operating leverage, efficiency, mix, new products, cost innovations, and China for China manufacturing strategy. Operating margin²,³ >32% Mid-teens sales growth combined with operating leverage. EPS² >$2.00 Continue to reduce interest expense. Non-GAAP tax rate of 8% in FY26, increasing by 100-150 bps/year to low teens. Free cash flow²,³,⁴ 20%-25% Capex at ~5%; working capital growth in-line with sales growth. 3-5 Year Target Model¹ Target Financial Model 1. These long-term targets are forward-looking, are subject to significant business, economic, regulatory and competitive uncertainties and contingencies, many of which are beyond the control of the Company and its management and are based upon assumptions with respect to future decisions, which are subject to change. Actual results may vary, and those variations may be material. Nothing in this presentation should be regarded as a representation by any person that these objectives will be achieved, and the Company undertakes no duty to update its objectives as circumstances change. For more information, please refer to the Disclaimers on Page 2 and the sections entitled “Risk Factors” and “Forward Looking Statements” in the Company’s Annual Report on Form 10-K for the fiscal year ended March 27, 2026. 2. Denotes a Non-GAAP measure. A reconciliation of the non- GAAP financial measures included in this chart to the corresponding GAAP measures is not available without unreasonable effort. Refer to the Appendix for historical adjustments from GAAP to Non-GAAP measures, which have been significant in prior periods. 3. As a percentage of sales. 4. Assumes 25% cash tax rate. 28
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FY26 FY28-FY29 FY30-FY32 Significant sales growth in focus areas and continued growth in other areas nets out to mid-teens sales growth Strategic Execution Poised to Deliver Mid-Teens Sales Growth for Allegro Allegro Sales Outlook¹ 1. Internal estimates. xEV, ADAS, AI Data Center Current Sensors, Position Sensors, Motor Drivers, TMR +Robotics, +48V, +Advanced ADAS Systems +Isolated Gate Drivers, +Inductive Sensors Focus Areas Other Areas Product Drivers Market Drivers 29
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Defined Strategies and Actions to Return to >55% Gross Margins² Operating Leverage • Internal Philippines assembly and test facility Factory efficiencies • Automation, OEE, and cycle time improvements Improve on healthy variable contribution margins • Mix (more higher margin Industrial) • New products (TMR, IGD) • Product cost innovation (example: gold to copper and die size reductions) • China-for-China supply chain • Disciplined pricing strategy FY21-FY24 AVG FY25 FY26¹,² Operating Leverage Target ModelFactory Efficiency 3%-5% 1%-2% >1% 55% 48% 49.4% >55%FY24 56% GM INVENTORY CORRECTION Optimize VCM incremental GM (60-65%) VCM Mix ASPs New Products Product Cost China for China 1. FY26 reflects actual Non-GAAP results 2. Non-GAAP gross margin is a Non-GAAP measure. Reconciliations of these numbers to the most comparable GAAP measures can be found in the Appendix. 30
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Investment and Capital Allocation Strategy¹ 1. These strategies are forward-looking, are subject to significant business, economic, regulatory and competitive uncertainties and contingencies, many of which are beyond the control of the Company and its management and are subject to change. For more information, please refer to the Disclaimers on Page 2 and the sections entitled “Risk Factors” and “Forward Looking Statements” in the Company’s Annual Report on Form 10-K for the fiscal year ended March 27, 2026. Capital Returns Maintain Strong Balance Sheet M&A with Specific Criteria Investments in Organic Growth • Deliver significant free cash flow • Maintain strong balance sheet and liquidity • Have reduced debt by $165 million during FY25 and FY26 • Net leverage below 1:1 exiting FY26 • Complementary to our technical expertise • Accelerate sales growth in Focus Areas • Accretive to TargetFinancial Model • R&D innovation that extends technology leadership and optimizes product cost • Sales investments in fast-growing markets and regions • Focus on high ROI organic investments • Opportunistic share repurchases that benefit our shareholders 31
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Appendix 32
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($ in millions) Fiscal Year ended March 26, 2021 (FY’21) Fiscal Year ended March 25, 2022 (FY’22) Fiscal Year ended March 31, 2023 (FY’23) Fiscal Year ended March 29, 2024 (FY’24) Fiscal Year ended March 28, 2025 (FY’25) Fiscal Year ended March 27, 2026 (FY’26) Total Net Sales $591.2 $768.7 $973.7 $1,049.4 $725.0 $890.1 Cost of goods sold 312.3 361.2 427.6 474.8 403.5 478.1 Gross Profit (GAAP) $278.9 $407.5 $546.1 $574.5 $321.5 $412.0 GAAP Gross Margin (% of net sales) 47.2% 53.0% 56.1% 54.8% 44.3% 46.3% Transaction-related costs — — — 1.1 — — Purchased intangible amortization 0.7 1.1 1.9 9.3 19.6 20.4 Restructuring costs 10.8 3.3 — 0.2 4.1 2.8 Stock-based compensation 5.2 3.2 5.1 5.4 2.9 4.0 Other costs 0.2 1.1 — — — 0.9 Non-GAAP Gross Profit $295.7 $416.1 $553.0 $590.4 $348.1 $440.1 Non-GAAP Gross Margin (% of net sales) 50.0% 54.1% 56.8% 56.3% 48.0% 49.4% GAAP to Non- GAAP Gross Profit and GrossMargin Reconciliations1 1. Sum of items may not total due to rounding. 33
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($ in millions) Fiscal Qtr ended September 26, 2025 (F2Q’26) Fiscal Qtr ended December 26, 2025 (F3Q’26) Fiscal Qtr ended March 27, 2026 (F4Q’26) Fiscal Qtr ended June 26, 2026 (F1Q’27) Trailing Twelve Months (TTM) ended June 26, 2026 Total Net Sales $214.3 $229.2 $243.2 $259.2 $945.9 Cost of goods sold 115.0 122.1 128.9 133.6 499.7 GAAP Gross Profit $99.3 $107.1 $114.3 $125.6 $446.3 GAAP Gross Margin (% of net sales) 46.3% 46.7% 47.0% 48.5% 47.2% Purchased intangible amortization 5.1 5.1 5.1 5.1 20.4 Restructuring costs 0.8 0.7 0.7 0.1 2.2 Stock-based compensation 1.0 1.0 1.0 1.2 4.2 Other costs — 0.4 0.4 0.4 1.4 Non-GAAP Gross Profit $106.2 $114.3 $121.6 $132.4 $474.5 Non-GAAP Gross Margin (% of net sales) 49.6% 49.9% 50.0% 51.1% 50.2% GAAP to Non- GAAP GrossProfit and Gross Margin Reconciliation¹ 1. Sum of items may not total due to rounding. 34
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($ in millions) Fiscal Qtr ended September 26, 2025 (F2Q’26) Fiscal Qtr ended December 26, 2025 (F3Q’26) Fiscal Qtr ended March 27, 2026 (F4Q’26) Fiscal Qtr ended June 26, 2026 (F1Q’27) TTM Ended June 26, 2026 GAAP Operating Income $6.2 $9.6 $5.4 $25.5 $46.7 GAAP Operating Margin (% of net sales) 2.9% 4.2% 2.2% 9.8% 4.9% Transaction-related costs — — 0.5 — 0.5 Impairment of assets held for sale — — 6.6 — 6.6 Purchased intangible amortization 5.6 5.6 5.7 5.6 22.5 Restructuring costs 3.5 5.4 5.0 0.7 14.6 Stock-based compensation 13.7 12.8 10.6 17.2 54.4 Other costs 0.6 1.9 4.0 1.4 8.0 Non-GAAP Operating Income $29.7 $35.3 $37.8 $50.4 $153.3 Non-GAAP Operating Margin (% of net sales) 13.9% 15.4% 15.6% 19.4% 16.2% GAAP to Non- GAAP Operating Income and Operating Margin Reconciliations¹ 1. Sum of items may not total due to rounding. 35
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(in millions, except per share) Fiscal Qtr ended September 26, 2025 (F2Q’26) Fiscal Qtr ended December 26, 2025 (F3Q’26) Fiscal Qtr ended March 27, 2026 (F4Q’26) Fiscal Qtr ended June 26, 2026 (F1Q’27) TTM ended June 26, 2026 GAAP Net (Loss) Income Attributable to Allegro MicroSystems, Inc. $6.5 $8.3 ($16.5) $15.9 $14.2 GAAP Diluted weighted average common shares 186.3 186.2 185.3 187.8 187.2 GAAP Diluted (Loss) Income per Share $0.03 $0.04 ($0.09) $0.08 $0.08 Transaction-related costs — 0.1 0.5 — 0.5 Transaction-related interest 0.6 0.2 0.2 0.2 1.3 Impairment of assets held for sale — — 6.6 — 6.6 Purchased intangible amortization 5.6 5.6 5.7 5.6 22.5 Restructuring costs 3.7 5.4 5.1 0.7 14.8 Stock-based compensation 13.7 12.8 10.6 17.2 54.4 Other costs 4.3 6.4 7.7 5.9 24.4 Tax effect of adjustments to GAAP results (10.7) (10.0) 11.6 (3.1) (12.2) Non-GAAP Net Income Attributable to Allegro MicroSystems, Inc. $23.8 $28.8 $31.6 $42.5 $126.6 Non-GAAP Diluted weighted average common shares 186.3 186.2 187.1 187.8 187.2 Non-GAAP Diluted Earnings per Share $0.13 $0.15 $0.17 $0.23 $0.68 GAAP to Non- GAAP Earnings per Share Reconciliations¹ 1. Sum of items may not total due to rounding. 36
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($ in millions, except for shares) Fiscal Qtr ended September 26, 2025 (F2Q’26) Fiscal Qtr ended December 26, 2025 (F3Q’26) Fiscal Qtr ended March 27, 2026 (F4Q’26) Fiscal Qtr ended June 26, 2026 (F1Q’27) TTM ended June 26, 2026 GAAP Operating Expenses $93.0 $97.5 $108.9 $100.1 $399.6 Research and Development Expenses (GAAP) $50.9 $52.9 $55.5 $55.2 $214.5 Restructuring costs 1.6 2.7 1.7 0.1 6.1 Stock-based compensation 4.9 3.6 4.4 6.6 19.5 Other costs 0.1 0.2 1.0 0.5 1.8 Non-GAAP Research and Development Expenses $44.2 $46.4 $48.5 $47.9 $187.0 Non-GAAP Research and Development Expenses (% of net sales) 20.6% 20.2% 19.9% 18.5% 19.8% Selling, General and Administrative Expenses (GAAP) $42.2 $44.6 $46.7 $45.0 $178.5 Transaction-related costs — — 0.5 — 0.5 Purchased intangible amortization 0.5 0.5 0.6 0.5 2.2 Restructuring costs 1.2 2.0 2.6 0.4 6.3 Stock-based compensation 7.8 8.2 5.2 9.4 30.6 Other costs 0.5 1.3 2.6 0.5 4.9 Non-GAAP Selling, General and Administrative Expenses $32.2 $32.6 $35.2 $34.1 $134.1 Non-GAAP Selling, General and Administrative Expenses (% of net sales) 15.0% 14.2% 14.5% 13.1% 14.2% Impairment of assets held for sale — — 6.6 — 6.6 Non-GAAP Operating Expenses $76.5 $79.0 $83.7 $82.0 $321.1 Non-GAAP Operating Expenses (% of net sales) 35.7% 34.5% 34.4% 31.6% 34.0% GAAP to Non- GAAP Operating Expense Reconciliations1 1. Sum of items may not total due to rounding. 37
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($ in millions) Fiscal Qtr ended September 26, 2025 (F2Q’26) Fiscal Qtr ended December 26, 2025 (F3Q’26) Fiscal Qtr ended March 27, 2026 (F4Q’26) Fiscal Qtr ended June 26, 2026 (F1Q’27) GAAP Operating Cash Flow $20.4 $45.4 $35.7 $22.0 GAAP Operating Cash Flow (% of net sales) 9.5% 19.8% 14.7% 8.5% Purchases of property, plant and equipment (6.4) (4.1) (17.0) (8.0) Non-GAAP Free Cash Flow $13.9 $41.3 $18.7 $14.0 Non-GAAP Free Cash Flow (% of net sales) 6.5% 18.0% 7.7% 5.4% GAAP to Non- GAAP Free Cash Flow Reconciliations¹ 1. Sum of items may not total due to rounding. 38