Investor Presentation November 2023

Montrose's Commitment to Reducing Our Own GHG Impacts Identify & Manage Climate- Related Risks NOW GHG Reduction Targets 2030 Net Zero GHG Emissions 2040 In addition to helping our clients identify and manage climate-related risks through the work we conduct supporting the transition to a low-carbon future, we anticipate significant climate- related opportunities through our solutions as new regulations are enacted regarding GHG emissions. • As part of this commitment, we will also set near-term (e.g., 2030) GHG reduction targets, and our near-term targets and our long-term goal will be validated by SBTi. Once our targets are set, we will develop emissions reduction action plans to enable target and goal achievement. • With the support of our Executive Leadership and Board, we have committed to achieving net zero GHG emissions by 2040. We are committing to net zero via the Science Based Target Initiative (SBTi). © 2023 Montrose Environmental Group, Inc. Proprietary. | 18

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