Tetra Tech, Inc. (TTEK)
NASDAQ: TTEK · Real-Time Price · USD
29.26
+0.82 (2.88%)
At close: Jun 26, 2026, 4:00 PM EDT
29.39
+0.13 (0.44%)
After-hours: Jun 26, 2026, 6:18 PM EDT
Tetra Tech Employees
Tetra Tech had 25,000 employees as of September 28, 2025. The number of employees decreased by 5,000 or -16.67% compared to the previous year.
Employees
25,000
Change (1Y)
-5,000
Growth (1Y)
-16.67%
Revenue / Employee
$176,125
Profits / Employee
$17,610
Market Cap
7.59B
Employees Chart
Employees History
| Date | Employees | Change | Growth |
|---|---|---|---|
| Sep 28, 2025 | 25,000 | -5,000 | -16.67% |
| Sep 29, 2024 | 30,000 | 3,000 | 11.11% |
| Oct 1, 2023 | 27,000 | 6,000 | 28.57% |
| Oct 2, 2022 | 21,000 | 0 | - |
| Oct 3, 2021 | 21,000 | 1,000 | 5.00% |
| Sep 27, 2020 | 20,000 | 0 | - |
| Sep 29, 2019 | 20,000 | 3,000 | 17.65% |
| Sep 30, 2018 | 17,000 | 1,000 | 6.25% |
| Oct 1, 2017 | 16,000 | 0 | - |
| Oct 2, 2016 | 16,000 | 3,000 | 23.08% |
| Sep 27, 2015 | 13,000 | -1,000 | -7.14% |
| Sep 28, 2014 | 14,000 | 0 | - |
| Sep 29, 2013 | 14,000 | 1,000 | 7.69% |
| Sep 30, 2012 | 13,000 | 0 | - |
| Oct 2, 2011 | 13,000 | 1,000 | 8.33% |
| Oct 3, 2010 | 12,000 | 2,000 | 20.00% |
| Sep 27, 2009 | 10,000 | 800 | 8.70% |
| Sep 28, 2008 | 9,200 | 1,400 | 17.95% |
| Sep 30, 2007 | 7,800 | 500 | 6.85% |
| Oct 1, 2006 | 7,300 | -400 | -5.19% |
| Oct 2, 2005 | 7,700 | -900 | -10.47% |
| Oct 3, 2004 | 8,600 | -300 | -3.37% |
| Sep 28, 2003 | 8,900 | 1,408 | 18.79% |
| Sep 29, 2002 | 7,492 | 92 | 1.24% |
| Sep 30, 2001 | 7,400 | 799 | 12.10% |
| Oct 1, 2000 | 6,601 | 1,158 | 21.28% |
| Oct 3, 1999 | 5,443 | 1,781 | 48.63% |
| Oct 4, 1998 | 3,662 | 1,400 | 61.89% |
| Sep 28, 1997 | 2,262 | 373 | 19.75% |
| Sep 29, 1996 | 1,889 | - | - |
Sources: Annual number of employees according to filings submitted to the U.S. Securities and Exchange Commission (SEC). Data is also manually gathered from company press releases, IPO filings, and other official sources.
Related Stocks
| Company Name | Employees |
|---|---|
| AECOM | 51,000 |
| Stantec | 26,000 |
| Fluor | 22,995 |
| Primoris Services | 18,526 |
| Everus Construction Group | 9,400 |
| MYR Group | 9,000 |
| Arcosa | 6,390 |
| Granite Construction | 2,500 |
TTEK News
- 1 day ago - Tetra selected for $49M multiple-award U.S. Army Corps of Engineers contract - TheFly
- 1 day ago - Tetra Tech Selected for $49 Million Multiple-Award U.S. Army Corps of Engineers Contract - Business Wire
- 3 days ago - Tetra Tech awarded digital systems integration contract from California’s EWA - TheFly
- 3 days ago - Tetra Tech Awarded Digital Systems Integration Contract for Wastewater Authority in California - Business Wire
- 10 days ago - Tetra Tech selected by Scotland Excel - TheFly
- 10 days ago - Tetra Tech Secures Positions on Scotland Excel Engineering and Technical Consultancy Framework - Business Wire
- 17 days ago - Tetra Tech selected as lead design engineer for Hydropower Dam modernization - TheFly
- 17 days ago - Tetra Tech Selected as Lead Designer for Hydropower Dam Modernization Contract - Business Wire