XMTR Q3 2025 Earnings Presentation

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Safe Harbor This presentation contains forward-looking statements. All statements other than statements of historical facts contained in this presentation, including statements regarding the Company’s future results of operations, financial position and cash flows, expectations regarding its growth and margin expansion, including in international markets, ability to achieve and maintain profitability, business strategy, ability to maintain existing, and establish new, strategic partnerships or other arrangements with Buyers or Suppliers on the Company’s platform, the potential for acquisitions, and the Company’s share of the market, the impact of macroeconomic factors, including tariffs, on the Company’s business, the potential market size for the Company’s platform and other solutions and plans and objectives of management for future operations are forward-looking statements. These statements involve known and unknown risks, uncertainties and other important factors that may cause the Company’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Because forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified and some of which are beyond the Company’s control, you should not rely on these forward-looking statements as predictions of future events. Risks regarding the Company's business are described in detail in its Securities and Exchange Commission (SEC) filings, including its Annual Report on Form 10-K for the year ended December 31, 2024, and its other filings with the SEC, including the Company’s Quarterly Report for the quarter ended September 30, 2025. The events and circumstances reflected in the Company’s forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Except as required by applicable law, the Company does not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances or otherwise. This presentation also contains estimates and other statistical data from both independent third parties and the Company relating to market size and growth and other data about the Company’s industry. This data involves a number of assumptions and limitations, and you are cautioned not to give undue weight to such estimates. While the Company believes the estimates and statistical data from these independent third parties are reliable as of the date of this presentation, it has not independently verified, and makes no representation as to the adequacy, fairness, accuracy or completeness of any information obtained from these third parties. Neither the Company nor any other person makes any representation as to the accuracy or completeness of such data or undertakes any obligation to update such data after the date of this presentation. In addition, projections, assumptions and estimates of the Company’s future performance and the future performance of the markets in which the Company operates are necessarily subject to a high degree of uncertainty and risk. In light of the foregoing, you are urged not to rely on any forward-looking statement or third-party data in reaching any conclusion or making any investment decision about any securities of the Company. This presentation contains non-GAAP financial measures and key metrics relating to the Company’s past performance. These non-GAAP financial measures are presented 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 its 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 Company’s non-GAAP financial measures as a tool for comparison. The Company has provided a reconciliation of measures to the most directly comparable GAAP measures, which is available in the Appendix. 2

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. 3 1. Active Buyers defined as the number of Buyers who have made at least one purchase on Xometry’s marketplace during the last twelve months. 2. Active Suppliers defined as the Suppliers that have used Xometry’s platform at least once during the last twelve months to manufacture a product. $643M LTM Revenue → Q3 2025 Revenue increased +28% YoY → Q3 2025 Marketplace growth +31% YoY $11.2M LTM Adj. EBITDA → Q3 2025 Adj. EBITDA $6.1M → Q3 2025 Adj. EBITDA +$6.8M YoY $253M LTM Gross Profit → Q3 2025 Gross Profit +29% YoY → Q3 2025 Marketplace Gross Profit +40% YoY Rapid Growth, Digitizing and Transforming Manufacturing 78K+ Q3 2025 Active Buyers1 → Large, rapidly growing, diverse Buyers → Active Buyers +21% YoY 4,375 Q4 2024 Active Suppliers2 → Leading global Supplier network → Active Suppliers +28% YoY

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. 4 Strong Q3 2025 Financial Performance Record revenue of $181M +28% YoY driven by 31% Marketplace revenue growth. Record gross profit of $72.0M +29% YoY driven by 40% Marketplace gross profit growth. Strong Marketplace gross margin of 35.7% +210 bps YoY powered by AI pricing & selection. Strong Supplier Services gross margin of 88.7% via Thomas core advertising. Expanding Adj. EBITDA margin, Q3 Adj EBITDA of $6.1M +$6.8M YoY. Progress on Key Growth Initiatives Financial Highlights Expanding networks of Buyers and Suppliers with Active Buyers +21% in Q3 driven by increasing enterprise penetration and Teamspace adoption. Active Suppliers +28% YoY in 2024. Driving enterprise engagement as Accounts with LTM spend >$500K exceeded 100 in FY24 and grew revenue by >40% YoY. Expanding marketplace platforms with launch of Workcenter mobile app and Injection Molding Auto Quoting. Enhanced AI powered DFM capabilities. International growth +23% YoY, driven by Europe and expanding Asia Pacific. Launched a new Thomas advertising model to improve monetization and advertiser penetration, with dynamic ad serving technology. Strong durable growth outlook given significant global TAM/low penetration rates. Increasing market share through key growth initiatives. Increasing marketplace gross margin on an annual basis, driving faster gross profit dollar growth. Targeting 20% Incremental Adj. EBITDA margins as we scale to $1BN. Improving cash flow conversion with asset light marketplace model, low CAPEX and limited working capital requirements. Q3 2025 Results and Financial Highlights

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Significant Growth at Scale $303 $395 $486$381 $463 $546 FY 2022 FY 2023 FY 2024 $127 $167 $142 $181 Q3 2024 Q3 2025 Annual Revenue 5 → $546M FY24 Total Revenue, +18% YoY → $486M FY24 Marketplace Revenue, +23% YoY → $181M Q3 2025 Total Revenue, +28% YoY → $167M Q3 2025 Marketplace Revenue, +31% YoY $ in millions Quarterly Revenue $ in millions Supplier ServicesMarketplace

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Active Suppliers2 Large and Growing Marketplace of Buyers and Suppliers Marketplace growth has been driven by efficiently matching Supplier capacity with Buyer demand 6 2,529 3,429 4,375 FY 2022 FY 2023 FY 2024 40,567 55,325 68,267 64,851 78,282 FY 2022 FY 2023 FY 2024 Q3 2024 Q3 2025 1. Active Buyers defined as the number of Buyers who have made at least one purchase on Xometry’s marketplace during the last twelve months. 2. Active Suppliers defined as the Suppliers that have used Xometry’s platform at least once during the last twelve months to manufacture a product. +21% YoY +28% YoY Active Buyers1

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Rapidly Growing International Revenue → Q3 International revenue growth of 23% YoY, 18% of Marketplace revenue. → Long-term target is for International to represent 30-40% of Marketplace revenue. International 2% U.S. 98% International 18% U.S. 82% EU HQ: Munich, Germany ASIA HQ: Shanghai, China ASIA EUROPE 18 Languages 6 Currencies 7© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. International Expansion and Increasing Percentage of Marketplace Revenue 2020 2024 7

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. 96% 96% 97% 97% 98% FY 2022 FY 2023 FY 2024 Q3 2024 Q3 2025 1,027 1,331 1,495 1,506 1,724 FY 2022 FY 2023 FY 2024 Q3 2024 Q3 2025 Accounts with LTM Spend of $50K or More1 Revenue from Existing Xometry Accounts2 Expanding Wallet Share, Sticky Buyer Base 8 → Growth in Marketplace Accounts with LTM spend of at least $50K reflects emerging Enterprise Account opportunity. → Reliable land and expand Buyer dynamics drive the high percentage of revenue from existing Buyers. 1. Accounts with Last Twelve-Month, or LTM, Spend of at Least $50,000 defined as an account that has spent at least $50,000 on Xometry’s marketplace during the last twelve months. 2. Existing Accounts defined as an account where at least one Buyer has made a purchase on Xometry’s marketplace. +14% YoY

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Strong Gross Profit Growth, Q3 Marketplace GP +40% YOY $ in millions 9 Annual Gross Profit and Margin Quarterly Gross Profit and Margin $42.6 $59.5 $55.8 $72.0 3Q24 3Q25 $85.4 $121 $163$146 $178 $215 2022 2023 2024 Marketplace Total Marketplace Total Supplier ServicesMarketplace 28.2% 38.3% 30.8% 38.5% 33.5% 39.5% 33.6% 39.4% 35.7% 39.9% +40% YoY Marketplace Gross Profit +34% YoY Marketplace Gross Profit Supplier Services 89.6% 88.7%Supplier Services 78.0% 82.7% 89.0%

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Strong Buyer Growth, Improving Advertising Efficiency 10 Advertising % of Marketplace Revenue 64,851 68,267 71,454 74,777 78,282 3Q24 4Q24 1Q25 2Q25 3Q25 Net Active Buyer Adds 3,321 3,416 3,187 3,323 3,505 3Q24 4Q24 1Q25 2Q25 3Q25 6.3% 5.6% 4.5% 5.6% 5.0% 3Q24 4Q24 1Q25 2Q25 3Q25 Active Buyers1 1. Active Buyers defined as the number of Buyers who have made at least one purchase on Xometry’s marketplace during the last twelve months. → Advertising spend down 130 bps YoY to 5.0% → Q3 2025 Net Buyer Adds of 3,505 → Q3 2025 Active Buyer +21% YoY

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Non-GAAP Expenses as % of Revenue 20.7% 18.4% 17.8% 17.3% 15.9% FY22 FY23 FY24 3Q24 3Q25 10.8% 9.5% 9.0% 8.8% 8.2% FY22 FY23 FY24 3Q24 3Q25 6.0% 5.0% 4.5% 4.1% 3.4% FY22 FY23 FY24 3Q24 3Q25 12.6% 11.7% 10.2% 9.8% 9.1% FY22 FY23 FY24 3Q24 3Q25 50.1% 44.6% 41.5% 40.0% 36.6% FY22 FY23 FY24 3Q24 3Q25 11 Strong Q3 2025 Leverage 1. Excludes stock-based compensation, payroll taxes related to stock-based compensation, depreciation, amortization, and restructure charges. 2. Excludes charitable contributions, amortization of in-place lease assets, lease abandonments, executive severance and acquisition and other adjustments. 3. Excludes one-time, non-cash adjustment related to purchase accounting. 4. Excludes costs associated with reduction in workforce and costs to exit the tools and materials business. Note: See the appendix for reconciliation to the nearest GAAP measures. Sales and Marketing1,3,4 Operations and Support1,4 Product Development1,4 G&A1,2,4Total Non-GAAP Operating Expenses 11

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Strong Incremental Adj. EBITDA Margin of 20%+ 12 $381 $463 $546 $142 $181 FY22 FY23 FY24 3Q24 3Q25 Revenue Adj. EBITDA → ~$600M annual revenue run rate delivered positive Adj. EBITDA. → Strong Adj EBITDA margin flow through of 20%+ above $600M. → Asset light model, expect CAPEX of ~$8-9M/quarter (capitalized software). → Expect strong cash flow conversion from Adj. EBITDA. Financial Drivers $(44.8) $(27.5) $(9.7) $(0.6) $6.1 FY22 FY23 FY24 3Q24 3Q25 FY22-23 FY23-24 YTD 25 ~20% ~22% ~21%Adj. EBITDA ∆ / Revenue ∆ 12© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. $ in millions $ in millions Note: See the appendix for reconciliation to the nearest GAAP measures.

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Raising FY2025 Outlook 13 → For Q4 2025, expect revenue of $182-184M, representing 23-24% growth YoY. → For Q4 2025, expect Adj. EBITDA of $6-$7M, an improvement from an Adjusted EBITDA of $1.0M in Q4 2024. → For FY 2025, we are raising our revenue guidance to $676-$678M. → For FY 2025, we are raising our Adj. EBITDA guidance to $16-17M. Q4 2025 FY 2025 1. Reconciliation of Adjusted EBITDA on a forward-looking basis to net loss, the most directly comparable GAAP measure, is not available without unreasonable efforts due to the high variability and complexity and low visibility with respect to certain charges excluded from this non-GAAP measure, including interest and dividend income, benefit for income taxes, charitable contributions of common stock and impairment of assets. Xometry expects the variability of theseitems could have a significant, and potentially unpredictable, impact on its future GAAP financial results.

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Adjusted EBITDA Reconciliation $ in thousands 15 1. Represents depreciation expense of the Company’s long-lived tangible assets and amortization expense of its finite-lived intangible assets, as included in the Company’s GAAP results of operations. 2. Represents the non-cash expense related to stock-based awards granted to employees, as included in the Company’s GAAP results of operations. 3. In the second quarter of 2024, we changed the definition of Adjusted EBITDA to exclude payroll tax expense related to stock-based compensation. For prior periods, this amount was considered de minimus and, accordingly, we have not adjusted the Adjusted EBITDA amounts for such periods. 4. Amount is recorded in general and administrative. 5. Includes adjustments related to purchase accounting, the revaluation of contingent consideration, transaction costs, and executive severance. 6. Costs associated with a reduction in workforce.

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Reconciliation of Non-GAAP Operating Expenses – Sales and Marketing $ in thousands 16 1. Represents depreciation expense of the Company’s long-lived tangible assets and amortization expense of its finite-lived intangible assets, as included in the Company’s GAAP results of operations. 2. Represents the non-cash expense related to stock-based awards granted to employees, as included in the Company’s GAAP results of operations. 3. Includes adjustments related to purchase accounting, the revaluation of contingent consideration, transaction costs, and executive severance. 4. Costs associated with a reduction in workforce.

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Reconciliation of Non-GAAP Operating Expenses – Operations and Support $ in thousands 17 1. Represents depreciation expense of the Company’s long-lived tangible assets and amortization expense of its finite-lived intangible assets, as included in the Company’s GAAP results of operations. 2. Represents the non-cash expense related to stock-based awards granted to employees, as included in the Company’s GAAP results of operations. 3. Includes adjustments related to purchase accounting, the revaluation of contingent consideration, transaction costs, and executive severance. 4. Costs associated with a reduction in workforce.

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Reconciliation of Non-GAAP Operating Expenses – Product Development $ in thousands 18 1. Represents depreciation expense of the Company’s long-lived tangible assets and amortization expense of its finite-lived intangible assets, as included in the Company’s GAAP results of operations. 2. Represents the non-cash expense related to stock-based awards granted to employees, as included in the Company’s GAAP results of operations. 3. Costs associated with a reduction in workforce. 4. Includes adjustments related to purchase accounting, the revaluation of contingent consideration, transaction costs, and executive severance.

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Reconciliation of Non-GAAP Operating Expenses – General and Administrative $ in thousands 19 1. Represents depreciation expense of the Company’s long-lived tangible assets and amortization expense of its finite-lived intangible assets, as included in the Company’s GAAP results of operations. 2. Represents the non-cash expense related to stock-based awards granted to employees, as included in the Company’s GAAP results of operations. 3. Amount is recorded in general and administrative. 4. Includes adjustments related to purchase accounting, the revaluation of contingent consideration, transaction costs, and executive severance. 5. Costs associated with a reduction in workforce.

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© 2025 Xometry and/or its affiliates. All rights reserved. Proprietary. Reconciliation of Non-GAAP Cost of Revenue $ in thousands 20 1. Represents depreciation expense of the Company’s long-lived tangible assets and amortization expense of its finite-lived intangible assets, as included in the Company’s GAAP results of operations.

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