Tetra Tech, Inc. (NASDAQ:TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today the planned dates for its second quarter 2026 results and conference call.

On Wednesday, April 29, 2026, after market close, Tetra Tech intends to announce its second quarter 2026 results. On Thursday, April 30, 2026, at 8:00 a.m. Pacific Time, Tetra Tech plans to host a conference call to present and discuss the Company's financial results and forward outlook.

Investors and other interested parties can access a live audio-visual webcast through a link posted on the Company's website at tetratech.com/investors. The webcast replay will be available following the call.

Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high-end consulting 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.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260407957687/en/

Jim Wu, Investor Relations

Charlie MacPherson, Media & Public Relations

(626) 470-2844

Tetra Tech Announces Planned Dates for Second Quarter 2026 Results and Conference Call