Xometry Mergers and Acquisitions Presentation Deck

Delivering Strong Growth 26,187 Q3 Active Buyers ¹ 1 16,266 || 3Q20 18,846 Xometry 4Q20 21,345 1Q21 23,942 2Q21 26,187 61% YOY Growth 3Q21 603 Q3 Accounts with LTM Spend of at Least $50K² 361 3Q20 389 4Q20 412 1Q21 508 2Q21 603 67% YOY Growth 3Q21 1. We define Active Buyers as the number of buyers who have made at least one purchase on our marketplace in the twelve months ended September 30, 2021. 2. We define Accounts with Last Twelve-Month, or LTM, Spend of at Least $50,000 as an account that has spent at least $50,000 on our marketplace in the last twelve months. 3. For the year ended December 31, 2020. We define Active Sellers as the sellers that have used our platform at least once during the last twelve months to manufacture a product or buy tools or supplies. 1,410 Active Sellers 3 774 2019 1,410 +82% YOY Growth 2020 © 2021 Xometry and/or its affiliates. All rights reserved. Confidential 6

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