| 2023-11-22 | Sale | Tetra Tech, Inc. TTEK | SVP, General Counsel | 1,050 0.002% | $165.22 | $173,483 | +10.45% | |
| 2023-11-21 | Sale | Tetra Tech, Inc. TTEK | SVP, General Counsel | 1,395 0.0026% | $164.13 | $228,965 | +10.48% | |
| 2022-11-21 | Sale | Tetra Tech, Inc. TTEK | SVP, General Counsel | 3,616 0.0069% | $157.52 | $569,592 | -2.09% |