Investor Presentation November 2023

Acquisitions Remain Core To Our Strategy and Highly Accretive MONTROSE ENVIRONMENTAL Successfully completed five value-enhancing acquisitions in 2023 Consistently targeted additive services, geographies, clients and technologies Demonstrated ability to effectively integrate, cross-sell and create revenue and cost synergies Acquisition pipeline remains robust Strong balance sheet and ample liquidity to further execute M&A strategy VANDRENSNING.COM GreenPath A Montrose Environmental Company FRONTIER ANALYTICAL LABORATORY Matrix Solutions Inc. A Montrose Environmental Company ENVIRONMENTAL ALLIANCE A Montrose Environmental Company © 2023 Montrose Environmental Group, Inc. Proprietary. | 11.

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