Tetra Tech Inc (TTEK) stock

TTEKNasdaqServices-Engineering ServicesFiscal year ends September 27

Financials through Q3 FY2026, quarter ended Jun 28, 2026Last filing: 10-Q on Jul 31, 2026Score 15/305% below fair value

$38.83−0.60 (-1.52%)

Close on Nov 13, 2026Market cap $9.94BP/E 23.4Yield 0.63%

Tetra Tech EV/EBITDA

EV/EBITDA is enterprise value divided by EBITDA over the trailing twelve months.

Tetra Tech's EV/EBITDA was 15.2× on Nov 11, 2026, against 20.7× a year earlier. Over the last 5 years it ranged from 11.5× to 30.5×, with a median of 21.8×.

EV/EBITDA at the end of each year

Period	Period end	Value	Change (pts)
2026	Nov 11, 2026	15.2×	−4.8
2025	Dec 31, 2025	20.1×	+0.5
2024	Dec 31, 2024	19.6×	−3.3
2023	Dec 29, 2023	22.9×	+1.8
2022	Dec 30, 2022	21.1×	−9.3
2021	Dec 31, 2021	30.5×	+6.5
2020	Dec 31, 2020	23.9×	+1.6
2019	Dec 31, 2019	22.3×	+9.2
2018	Dec 31, 2018	13.1×	+0.6
2017	Dec 29, 2017	12.5×	−2.1
2016	Dec 30, 2016	14.6×	+2.4
2015	Dec 31, 2015	12.2×	+3.7
2014	Dec 31, 2014	8.4×	−14.2
2013	Dec 31, 2013	22.6×	+15.2
2012	Dec 31, 2012	7.5×	+0.5
2011	Dec 30, 2011	7.0×	−2.2
2010	Dec 31, 2010	9.2×	−1.4
2009	Dec 31, 2009	10.6×	–