| 2022-03-17 | Sale | Tetra Tech, Inc. TTEK | 318 0.0006% | $164.54 | $52,325 | -14.21% | ||
| 2021-11-24 | Sale | Tetra Tech, Inc. TTEK | director | 2,310 0.0043% | $188.98 | $436,551 | -24.22% | |
| 2021-11-23 | Sale | Tetra Tech, Inc. TTEK | director | 410 0.0007% | $186.03 | $76,272 | -24.33% | |
| 2021-09-07 | Sale | Tetra Tech, Inc. TTEK | director | 5,400 0.01% | $147.88 | $798,566 | +1.81% | |
| 2020-11-24 | Sale | Tetra Tech, Inc. TTEK | director | 4,182 0.0078% | $123.29 | $515,598 | +9.33% | |
| 2020-11-16 | Sale | Tetra Tech, Inc. TTEK | director | 21,000 0.0387% | $122.83 | $2.58M | +7.16% | |
| 2019-12-03 | Sale | Tetra Tech, Inc. TTEK | director | 16,060 0.0295% | $86.35 | $1.39M | +1.16% | |
| 2019-09-03 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.029% | $80.62 | $1.29M | +5.04% | |
| 2019-02-19 | Sale | Tetra Tech, Inc. TTEK | director | 7,560 0.0136% | $58.46 | $441,958 | +40.11% | |
| 2018-02-23 | Sale | Tetra Tech, Inc. TTEK | director | 8,802 0.0157% | $50.16 | $441,523 | +14.54% | |
| 2017-02-06 | Sale | Tetra Tech, Inc. TTEK | director | 35,480 0.0618% | $41.34 | $1.47M | +11.28% | |
| 2016-05-02 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0275% | $30.14 | $482,246 | +27.18% | |
| 2013-05-14 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0244% | $27.40 | $438,400 | -1.86% | |
| 2010-05-04 | Sale | Tetra Tech, Inc. TTEK | director | 3,600 0.0059% | $24.39 | $87,810 | -6.1% | |
| 2009-05-07 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0269% | $24.60 | $393,646 | +8.87% | |
| 2008-05-19 | Sale | Tetra Tech, Inc. TTEK | director | 13,369 0.0227% | $24.76 | $331,012 | -8.55% | |
| 2007-06-04 | Sale | Tetra Tech, Inc. TTEK | director | 70,840 0.122% | $22.57 | $1.6M | -5.85% | |
| 2006-03-02 | Tetra Tech, Inc. TTEK | director | 3,900 0.0067% | $17.95 | $70,005 | -2.63% |