Xometry Mergers and Acquisitions Presentation Deck

Accelerates Growth of Xometry's Digital Manufacturing Marketplace Transaction Details Xometry Transaction Structure Strategic Rationale Financial Benefits Closing and Pro Forma Updates ● ● ● ● ● ● Xometry is acquiring Thomas on a cash-free, debt-free basis for $300 million Consideration of $198.5 million in cash and $101.5 million in Xometry common stock ● Accelerates growth of Xometry's marketplace Creates unparalleled scale of buyers and sellers Establishes end-to-end suite of seller services Enhances margins and accelerates path to profitability Including the benefits of synergies, in 2022 pro forma company will maintain revenue growth in-line with Xometry standalone Accelerates Xometry's path to profitability, with full year profitability anticipated in 2023 Immediately accretive to gross margin and Adjusted EBITDA margin¹ Transaction is expected to close by December 10, 2021 • Pro forma basic shares outstanding of 43.8 million post acquisition 1. We define Adjusted EBITDA as net income (loss) excluding interest income (expense), income tax (expense) benefit, and certain other non-cash or non-recurring items impacting net loss from time to time, principally comprised of depreciation and amortization, stock-based compensation, equity method income (loss) charitable contributions and impairment charges. © 2021 Xometry, Inc and/or its affiliates. All rights reserved. Confidential 17

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