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TETRA TECH INC

For the period ended Sep 28, 2025. Filed Nov 20, 2025.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Nov 20, 2025

TTEK$40.29-0.7%Stored close · as of Nov 6, 2026

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Reportable Segments

We manage our operations under two reportable segments. Our Government Services Group ("GSG") reportable segment primarily includes activities with U.S. government clients (federal, state and local) and all activities with development agencies worldwide. Our Commercial/International Services Group ("CIG") reportable segment primarily includes activities with U.S. commercial clients and international clients other than development agencies. These reportable segments allow us to capitalize on our growing market opportunities and enhance the development of high-end consulting and technical solutions to meet our growing client demand.

The following table presents the percentage of our revenue by reportable segment:

Fiscal Year
Reportable Segment202520242023
GSG49.1%47.8%47.7%
CIG52.353.653.6
Inter-segment elimination(1.4)(1.4)(1.3)
100.0%100.0%100.0%

For additional information regarding our reportable segments, see Note 19, "Reportable Segments" of the "Notes to Consolidated Financial Statements" included in Item 8. For more information on risks related to our business, reportable segments and geographic regions, including risks related to foreign operations, see Item 1A, “Risk Factors” of this report.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.