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FALL2026 INVESTOR PRESENTATION
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This presentation contains, or may be deemed to contain, "forward- looking statements" (as defined in the US Private Securities Litigation Reform Act of 1995) which reflect our current views with respect to future events and financial performance. We use words such as "anticipates," “projection,” “outlook,” “forecast,” "believes," "plan," "expect," "future," "intends," "may," "will," "estimates," “see,” "predicts," “should” and similar expressions to identify these forward-looking statements. Forward looking statements included in this press release include our expectations about the semiconductor capital equipment market and outlook. All forward- looking statements address matters that involve risks and uncertainties. Accordingly, the Company’s actual results may differ materially from the results predicted or implied by these forward-looking statements. These risks, uncertainties and other factors also include, among others, those identified in "Risk Factors,” "Management's Discussion and Analysis of Financial Condition and Results of Operations'' and elsewhere in our annual report on Form 10-K as filed with the Securities and Exchange Commission. Ultra Clean Holdings, Inc. undertakes no obligation to publicly update or review any forward-looking statements, whether as a result of new information, future developments or otherwise unless required by law. Non-GAAP Management uses non-GAAP gross margin, non-GAAP operating margin and non-GAAP net income to evaluate the Company's operating and financial results. We believe the presentation of non-GAAP results is useful to investors for analyzing our core business and business trends and comparing performance to prior periods, along with enhancing investors' ability to view the Company's results from management's perspective. The presentation of this additional information should not be considered a substitute for results prepared in accordance with GAAP. Tables presenting reconciliations from GAAP results to non-GAAP results are included in the appendix. Safe Harbor 2
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Enabling Technology for 30 Years 3 SOLVING COMPLEX PROBLEMS THROUGH GENERATIONS OF INNOVATION
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Proven Growth Strategy 4 JULY•2015 Purchase Price $22.8M Revenue Growth: +325% GM Expansion: +7% FEBRUARY•2015 Purchase price $43.6M Revenue: +200% GM: +8% MARCH•2021 Purchase Price $351M Revenue: +50% GM: +5% AUGUST•2018 Purchase Price $342.0 Revenue: +40% GM: +8% APRIL•2019 Purchase Price $30.0M EV/EBITDA ~5.4 OCTOBER•2023 Purchase Price $50M EV/EBITDA ~8.3
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FAB CONSTRUCTION SUPPORT ▪ChemTrace: Cleanrooms & Sub-fab Analysis ▪Fab Infrastructure – Facilities Gas & Water, Effluent Abatement & Treatment Our Role in the Lifecycle of Chip Manufacturing 5 EQUIPMENT BUILDOUT ▪Wafer Fab Production Equipment ▪New Part Cleaning ▪WFE & Sub-Fab Support Equipment – Pumps, Gas & Chemical Cabinets PRODUCTION SERVICES ▪Part Recycling & Refurb ▪Part Cleanliness Analytics
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DEPOSITION ETCH LITHOGRAPHY IMPLANT CMP Supplying Critical Process Capabilities 6 EPITAXY ANNEAL INSPECTION WAFER CLEAN 1,000+ STEPSPER DEVICE 100’S OF TOOLSPER FAB
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Diversified Path To Market Expansion 7
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Lam 39% Applied 22% Other OEM 25% Non - semi 4% Service * 10% Foundry & Logic WFE 52% Memory WFE 34% Non - semi 4% Service * 10% Industry and Customer Footprint (Q3’26) 8 * Includes low single digit OEM service revenue
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Strategic Global Footprint 9 CALIFORNIA OREGON ARIZONA COLORADO TEXAS MAINE UK KOREA CHINA PHILIPPINES TAIWAN SINGAPORE MALAYSIA CZECH REPUBLIC PRODUCTS* * Primary operational site ISRAEL SERVICES
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Total Available Market 10 $40B $155 - 160B $2.5B $1.5T+
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UCT 3.0: Powering Performance, Innovation & People 11 Transform Business • AI • NPX Drive Operational Excellence • Ramp Readiness • Flawless Execution Expand Margin • Vertical Integration • Regional Alignment Grow Share and SAM • Technical Partnerships • Mergers & Acquisitions
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End Market Update 12 Foundry AI DEMAND OUTPACING SUPPLY – Steep 2nm ramp sustaining record leading-edge capex – Leading-edge footprint expanding across regions – Advanced packaging constrained; OSAT capex accelerating Logic STEADY , AI-LED LOGIC INVESTMENT – Edge AI & data center compute supporting node upgrades – Capacity additions paced to customer demand – Regional self-sufficiency goals underpinning local fab spend 3D NAND AI STORAGE FUELING NEW CAPACITY – Data center now largest NAND market, plans for greenfield fabs – Node transitions & AI SSD demand driving sustained NAND spend DRAM DRAM TO LEAD 2027 WFE GROWTH – HBM committed through 2027; tight into 2028 – Fab pull-ins accelerating to address DDR5 & HBM shortages – Record pricing funding commodity DRAM expansion
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FINANCIAL UPDATE FALL2026
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PRODUCTS Revenue • $681.9M Gross Margin* • 15.9% Operating Margin* • 8.5% SERVICES Revenue • $77.1M Gross Margin* • 30.1% Operating Margin* • 13.6% Q3’26 Key Takeaways 14 *Non-GAAP results - Excluding intangible amortization expense, non -recurring costs and SBC TOTAL REVENUE $759.0M GROSS MARGIN* 17.3% OPERATING CASH FLOW $(42.3)M OPERATING MARGIN* 9.0% CASH BALANCE $270.9M EPS* $1.15
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Q4’26 Guidance 15 REVENUE $800M • $860M EPS $1.11 • $1.35
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Thank You
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Reconciliation: GAAP Net Income (loss) to Non-GAAP Net Income 17 * Refer to 10k $ IN MILLIONS FY24 FY25 Q1’26 Q2’26 Q3’26 Net income (Loss) per GAAP basis 23.7 (181.2) (17.9) 8.7 39.1 Amortization of intangible assets (1) 30.4 28.1 6.9 6.8 6.8 Restructuring charges (2) 2.3 17.1 4.8 0.7 0.6 Stock-based compensation expense (3) 17.8 19.2 4.0 8.1 6.9 Legal-related costs (4) 2.7 1.9 - - 0.6 Acquisition related costs* (5) 1.0 - - - - Fair value related adjustments (6) (29.1) (0.1) - - - VAT settlement (7) - (0.2) - - - Debt refinancing costs expensed (8) 4.0 1.1 3.0 0.7 - Impairment of goodwill (9) - 151.1 - - - Unrealized (gain) loss on foreign exchange (10) 2.7 (0.3) (1.1) (1.9) 2.6 Income tax effect of non-GAAP adjustments (11) (6.7) (45.7) (3.5) (2.9) (3.5) Income tax effect of valuation allowance (12) 18.5 56.5 18.3 12.1 0.1 Non-GAAP net income 67.3 47.5 14.5 32.3 53.2
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Reconciliation: GAAP to Non-GAAP Earnings Per Diluted Share 18* Refer to 10k FY24 FY25 Q1’26 Q2’26 Q3’26 Net income (Loss) per GAAP basis $0.52 $(4.00) $(0.40) $0.19 $0.85 Amortization of intangible assets (1) $0.67 $0.62 $0.15 $0.15 $0.15 Restructuring charges (2) $0.05 $0.38 $0.10 $0.01 $0.01 Stock-based compensation expense (3) $0.39 $0.42 $0.09 $0.18 $0.15 Legal-related costs (4) $0.06 $0.04 - - $0.01 Acquisition related costs* (5) $0.02 - - - - Fair value related adjustments (6) $(0.64) - $0.00 - - VAT settlement (7) - - - - - Debt refinancing costs expensed (8) $0.09 $0.02 $0.06 $0.01 - Impairment of goodwill (9) - $3.32 - - - Unrealized (gain) loss on foreign exchange (10) $0.06 $(0.01) $(0.02) $(0.04) $0.06 Income tax effect of non-GAAP adjustments (11) $(0.14) $(1.01) $(0.08) $(0.06) $(0.08) Income tax effect of valuation allowance (12) $0.41 $1.24 $0.40 $0.26 $0.00 Impact of dilutive shares (13) - $0.02 $0.01 - - Non-GAAP net earnings $1.49 $1.04 $0.31 $0.70 $1.15 Weighted Avg. number of diluted shares (in Millions) 45.3 45.5 46.3 46.0 46.2