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PLEXUS CONFIDENTIAL FISCAL FOURTH QUARTER AND FISCAL 2026 HIGHLIGHTS October 28, 2026 1
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PLEXUS CONFIDENTIAL Some of the statements made and information provided during our call as well as information included in the supporting materials will be forward looking statements, including, without limitation, those regarding revenue, gross margin, selling and administrative expense, operating margin, other income and expense, taxes, cash cycle, capital allocation and future business outlook. Forward-looking statements are not guarantees since there are inherent difficulties in predicting future results, and actual results could differ materially from those expressed or implied in the forward-looking statements. For a list of factors that could cause actual results to differ materially from those discussed, please refer to the Companyʼs periodic SEC filings, particularly the risk factors in our Form 10K filing for the fiscal year ended September 27, 2025, as supplemented by the Safe Harbor and Fair Disclosure statement in our press release detailing our quarterly results. SAFE HARBOR AND FAIR DISCLOSURE STATEMENT 2
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PLEXUS CONFIDENTIAL OUR VISION WE HELP CREATE THE PRODUCTS THAT BUILD A BETTER WORLD OUR MISSION THE LEADER IN HIGHLY COMPLEX PRODUCTS AND DEMANDING REGULATORY ENVIRONMENTS FISCAL FOURTH QUARTER AND FISCAL 2026 THEMES F26 record revenue of $5B, with robust wins and substantial funnel expansion. Now forecasting F27 revenue growth in the mid- to upper-teens. F26 operating margin of 6.2% exceeded our 6.0% goal. Anticipate continued operating margin expansion for F27 in pursuit of new 6.5%7.0% operating margin goal. F26 ROIC exceeded 15% enduring goal. Forecast strong F27 ROIC performance from sustained working capital efficiency and disciplined capital spending. 3
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PLEXUS CONFIDENTIAL FINANCIAL RESULTS Excludes stock-based compensation expense ● Record Q4F26 revenue exceeded guidance ● Q4F26 revenue growth of 9% sequentially and 35% year over year ● Q4F26 Non-GAAP operating margin of 6.7% and Non-GAAP EPS of $2.84 exceeded guidance 4
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PLEXUS CONFIDENTIAL WINS AND FUNNEL HIGHLIGHTS ● Strong Q4F26 wins of $290 million, with broad-based market sector contribution ● Exciting new customer programs and relationships added in support of growth technologies in Aerospace/Defense, Healthcare/Life Sciences and Industrial ● Record funnel of qualified manufacturing opportunities 5 * Inclusive of sustaining services
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PLEXUS CONFIDENTIAL SUSTAINABILITY | Q4F26 HIGHLIGHTS ● Honored by Eaton for Overall Supplier Excellence and GE Vernova for Lean Manufacturing Excellence ● Awarded Manufacturing Business of the Year at the 2026 Scottish Borders Business Excellence Awards and earned High Commendations for both Innovation in Business and Large Business of the Year ● 34,821 paid Volunteer Time Off hours supported by the global Plexus team in F26. Plexusʼ Community Foundation donated $1.5 million in F26. ● Reduced absolute Scope 1 and 2 emissions by 50% across global manufacturing sites versus F23 baseline INNOVATING RESPONSIBLY FOR AND THROUGH OUR PEOPLE, OUR SOLUTIONS & OUR OPERATIONS - BUILT ON A FOUNDATION OF TRUST & TRANSPARENCY -6 DELIVERING EXCELLENCE CELEBRATING OUR EATON SUPPLIER EXCELLENCE AWARD
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PLEXUS CONFIDENTIAL FINANCIAL GUIDANCE ● Q1F27 revenue of $1.410 billion to $1.460 billion ● Q1F27 Non-GAAP EPS of $2.46 to $2.62 ● Anticipate mid- to upper-teens revenue growth and non-GAAP operating margin expansion for F27 ● Sustained working capital efficiency Excludes stock-based compensation expense Represents midpoint of guidance 7
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PLEXUS CONFIDENTIAL MARKET SECTOR PERFORMANCE AEROSPACE/DEFENSE ● Q4F26 wins grew 60% year over year ● Wins highlights: ○ New defense customer supporting combat training ○ Flight refueling system for defense applications Q1F27 Expectations Up high single digits ● Q4F26 missed guidance on materials timing ● F26 revenue growth of 23% ● F27 revenue growth expected to exceed 20% on program ramps, market share gains and broad-based end market demand strength 8 Q4F26 vs. Q3F26 - 4%
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PLEXUS CONFIDENTIAL MARKET SECTOR PERFORMANCE HEALTHCARE/LIFE SCIENCES Q1F27 Expectations Up low single digits Q4F26 vs. Q3F26 + 6% ● Q4F26 beat guidance on ability to support stronger customer demand ● F26 revenue growth of 19% ● F27 expected revenue growth of high single digits 9 ● Wins highlights: ○ New surgical robotics relationship leveraging Plexusʼ expertise in surgical technologies ○ Plexusʼ medical device, regulatory and regionalization expertise brings new relationship supporting cardiac defibrillation
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PLEXUS CONFIDENTIAL ● Q4F26 beat guidance on stronger customer demand and supply chain/operational excellence ● F26 revenue growth of 27% ● F27 revenue growth expected to exceed 20% with strong core industrial growth and sustained robust semicap growth MARKET SECTOR PERFORMANCE INDUSTRIAL Q1F27 Expectations Down low single digits Q4F26 vs. Q3F26 + 17% 10 ● Wins highlights: ○ New customer supporting smart grid battery energy storage system ○ Execution continuing to support semicap relationship expansion
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PLEXUS CONFIDENTIAL Funnel Expansion of 33% Year Over Year to Another Record 11 QUALIFIED MANUFACTURING FUNNEL TRENDS* Inclusive of sustaining services
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PLEXUS CONFIDENTIAL INCOME STATEMENT Q4F25 Q3F26 Q4F26 Actual Q4F26 Guidance Revenue $1.058 billion $1.305 billion $1.427 billion $1.330 billion to $1.380 billion Gross margin 9.9% 10.1% 10.2% 10.0% to 10.3% Selling & administrative expense * $51.7 million $70.1 million $59.7 million $57.5 to $58.5 million GAAP operating margin * 5.0% 4.7% 6.0% 5.5% to 5.9% Non-GAAP operating margin 5.8% 6.3% 6.7% 6.1% to 6.5% Non-operating expense $3.4 million $4.8 million $5.8 million Approximately $6.3 million GAAP diluted EPS * $1.87 $1.58 $2.51 $2.18 to $2.34 Non-GAAP diluted EPS $2.14 $2.32 $2.84 $2.47 to $2.63 Includes stock-based compensation expense12
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PLEXUS CONFIDENTIAL CASH FLOW AND BALANCE SHEET Q4F25 Q3F26 Q4F26 Free cash flow $97.2 million $0.7) million $6.4 million Share repurchases $21.5 million $20.6 million $21.4 million Cash balance $307 million $315 million $281 million Total debt $138 million $275 million $261 million Return on invested capital 14.6% 14.9% 15.8% Cash cycle days 63 days 62 days 62 days 13
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PLEXUS CONFIDENTIAL WORKING CAPITAL TRENDS Q4F25 Q1F26 Q2F26 Q3F26 Q4F26 Days in Accounts Receivable 57 58 55 56 60 Days in Contract Assets 13 13 12 13 13 Days in Inventory 118 124 120 116 119 Days in Accounts Payable 70 71 74 76 81 Days in Advanced Payments 55 55 49 47 49 Net Cash Cycle Days 63 69 64 62 62 14
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PLEXUS CONFIDENTIAL 15 NONGAAP OPERATING MARGIN Increasing Non-GAAP Operating Margin Goal to 6.5%7.0% Excludes stock-based compensation expense
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PLEXUS CONFIDENTIAL FISCAL FIRST QUARTER 2027 GUIDANCE Q1F26 Q4F26 Q1F27 Guidance Revenue $1.070 billion $1.427 billion $1.410 billion to $1.460 billion GAAP diluted EPS * $1.51 $2.51 $2.16 to $2.32 Non-GAAP diluted EPS $1.78 $2.84 $2.46 to $2.62 Gross margin 9.9% 10.2% 9.7% to 10.0% Selling & administrative expense * $51.7 million $59.7 million $61.0 to $62.0 million GAAP operating margin * 5.1% 6.0% 5.5% to 5.9% Non-GAAP operating margin 5.8% 6.7% 6.0% to 6.4% Depreciation and amortization $19.2 million $19.7 million Approximately $21 million Non-operating expense $3.4 million $5.8 million Approximately $6.8 million Non-GAAP effective tax rate 17% 14% 16% to 18% Diluted weighted average shares outstanding 27.3 million 27.2 million 27.1 million Cash cycle days 69 62 66 to 70 days Includes stock-based compensation expense16
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PLEXUS CONFIDENTIAL Q&A Thank you 17