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Tetra Tech TTEK Business Segments

TTM Q4 '25TTM Q3 '25TTM Q2 '25TTM Q1 '25TTM Q4 '24
Revenue by Geography
Australia$489.1M-2.0%$499.11M-2.0%$509.11M-1.9%$519.11M-1.9%$529.11M+3.9%
Canada$512.3M+0.7%$508.87M+0.7%$505.44M+0.7%$502.01M+0.7%$498.58M+3.2%
Other Countries$223.63M-4.0%$232.86M-3.8%$242.09M-3.7%$251.32M-3.5%$260.55M+9.3%
United Kingdom$771.72M+2.0%$756.7M+2.0%$741.67M+2.1%$726.64M+2.1%$711.62M+4.0%
United States$3.45B+1.8%$3.38B+1.9%$3.32B+1.9%$3.26B+1.9%$3.2B+2.7%

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Questions, answered.

How does Tetra Tech break its business down?
Tetra Tech (TTEK) reports segment reporting, other segment item, amount by business across 2 parts — CIG and GSG. Each is extracted from the segment footnotes and tracked over time.
Where does Tetra Tech's segment data come from?
Segment breakdowns are pulled from the segment footnotes in Tetra Tech's SEC filings (the XBRL dimensional tags), so every line ties back to a reported figure. Switch between quarterly, annual, and TTM, or open any segment for its full history.