| 2020-02-24 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0292% | $95.00 | $1.52M | -2.05% | |
| 2019-12-12 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0297% | $87.49 | $1.4M | +1.38% | |
| 2019-02-21 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0289% | $59.00 | $944,008 | +39.39% | |
| 2018-02-16 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0285% | $48.00 | $768,000 | +18.72% | |
| 2017-02-09 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0283% | $41.47 | $663,570 | +12.96% | |
| 2016-02-01 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0276% | $26.58 | $425,293 | +26.34% | |
| 2015-02-17 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.026% | $24.74 | $395,821 | +3.9% | |
| 2013-11-18 | Sale | Tetra Tech, Inc. TTEK | director | 16,000 0.0252% | $29.09 | $465,366 | -4.91% | |
| 2009-08-03 | Sale | Tetra Tech, Inc. TTEK | director | 21,000 0.0345% | $29.90 | $627,900 | -18.59% |