Tetra Tech, Inc. (NASDAQ:TTEK), a global provider of high-end technical and engineering services, Leading with Science^® in water, environment and sustainable infrastructure, announced today the promotions of Lauren Springer to President of the Government Services Group and David Bohmann to President of the Commercial/International Group, our two reporting segments.

"Lauren and David are exceptional leaders who combine deep technical expertise with a strong record of operational performance and business growth," said Roger Argus, Tetra Tech Chief Executive Officer. "Their experience in high-end water and environmental services is at the core of Tetra Tech’s Leading with Science^® approach and closely aligned with our growth strategy. Both have demonstrated the ability to bring together our people and technical capabilities to address our clients’ most complex challenges, and I look forward to their leadership in these expanded roles."

Ms. Springer has nearly 30 years of consulting engineering experience, including 26 years with Tetra Tech. She has deep technical expertise in water, wastewater, and infrastructure. She has led multidisciplinary operations across the United States and has been instrumental in advancing Tetra Tech’s leadership role in advanced water treatment, digital water services, and global municipal infrastructure programs.

Mr. Bohmann has more than 25 years of consulting and engineering experience, all with Tetra Tech, and has led complex environmental, geotechnical, water, and energy programs across a broad range of markets and geographies. He brings extensive experience in developing technically differentiated environmental solutions, building collaborative teams, and expanding long-term commercial client relationships.

These appointments further align Tetra Tech’s senior operational leadership with the Company’s strategy to further expand its differentiated water, environmental, and sustainable infrastructure capabilities and capture growing opportunities across its government, commercial, and international markets.

About Tetra Tech

Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide. With more than 25,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science^® to address the entire water cycle, protect and restore the environment, and design sustainable and resilient infrastructure. For more information about Tetra Tech, please visit tetratech.com or follow us on LinkedIn and Facebook.

Any statements made in this release that are not based on historical fact are forward-looking statements. Any forward-looking statements made in this release represent management’s best judgment as to what may occur in the future. However, Tetra Tech’s actual outcome and results are not guaranteed and are subject to certain risks, uncertainties and assumptions ("Future Factors"), and may differ materially from what is expressed. For a description of Future Factors that could cause actual results to differ materially from such forward-looking statements, see the discussion under the section "Risk Factors" included in the Company’s Form 10-K and Form 10-Q filings with the Securities and Exchange Commission.

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Jim Wu, Investor Relations

Charlie MacPherson, Media & Public Relations

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