Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-04-30 2:01 pm Purchase | 2026-03-31 | 13G | TETRA TECH INC TTEK | Vanguard Capital Management | 13,656,856 5.230% | 13,656,856 (New Position) | Filing History |
| 2026-03-27 1:33 pm Sale | 2026-03-13 | 13G | TETRA TECH INC TTEK | VANGUARD GROUP INC | 0 0.000% | -27,185,795 (Position Closed) | Filing History |
| 2025-10-17 1:09 pm Sale | 2025-10-16 | 13D | TETRA TECH INC TTEK | PICTET ASSET MANAGEMENT SA | 13,006,243 4.900% | -1,452,106 (-10.04%) | Filing History |
| 2025-04-15 2:06 pm Unchanged | 2025-04-15 | 13D | TETRA TECH INC TTEK | PICTET ASSET MANAGEMENT SA | 14,458,349 5.300% | 0 (Unchanged) | Filing History |
| 2025-04-07 11:51 am Purchase | 2025-03-31 | 13G | TETRA TECH INC TTEK | VANGUARD GROUP INC | 27,185,795 10.140% | 1,416,530 (+5.50%) | Filing History |
| 2025-02-11 09:44 am Purchase | 2024-12-31 | 13G | TETRA TECH INC TTEK | PICTET ASSET MANAGEMENT SA | 14,018,887 5.200% | 381,437 (+2.80%) | Filing History |
| 2025-02-06 4:12 pm Sale | 2024-12-31 | 13G | TETRA TECH INC TTEK | BlackRock Inc. BLK | 26,026,773 9.700% | -1,675,607 (-6.05%) | Filing History |
| 2024-11-21 06:04 am Sale | 2024-11-21 | 13G | TETRA TECH INC TTEK | PICTET ASSET MANAGEMENT SA | 13,637,450 5.100% | -311,060 (-2.23%) | Filing History |
| 2024-02-14 3:11 pm Sale | 2024-02-14 | 13G | TETRA TECH INC TTEK | ALLIANCEBERNSTEIN L.P. | 12,898,840 5.000% | -1,568,105 (-10.84%) | Filing History |
| 2024-02-13 5:15 pm Sale | 2023-12-29 | 13G | TETRA TECH INC TTEK | VANGUARD GROUP INC | 25,769,265 9.680% | -915,240 (-3.43%) | Filing History |
| 2024-01-31 10:38 am Purchase | 2023-12-29 | 13G | TETRA TECH INC TTEK | PICTET ASSET MANAGEMENT SA | 13,948,510 5.200% | 336,525 (+2.47%) | Filing History |
| 2024-01-24 09:47 am Sale | 2023-12-31 | 13G | TETRA TECH INC TTEK | BlackRock Inc. BLK | 27,702,380 10.400% | -948,660 (-3.31%) | Filing History |
| 2023-02-13 6:47 pm Purchase | 2023-02-14 | 13G | TETRA TECH INC TTEK | ALLIANCEBERNSTEIN L.P. | 14,466,945 5.600% | 14,466,945 (New Position) | Filing History |
| 2023-02-09 11:35 am Purchase | 2022-12-30 | 13G | TETRA TECH INC TTEK | VANGUARD GROUP INC | 26,684,505 10.070% | 50,050 (+0.19%) | Filing History |
| 2023-02-07 2:10 pm Sale | 2022-12-31 | 13G | TETRA TECH INC TTEK | BlackRock Inc. BLK | 28,651,040 10.800% | -6,558,215 (-18.63%) | Filing History |
| 2023-02-03 11:46 am Sale | 2022-12-31 | 13G | TETRA TECH INC TTEK | PICTET ASSET MANAGEMENT SA | 13,611,985 5.110% | -321,160 (-2.31%) | Filing History |
| 2022-12-12 3:09 pm Purchase | 2022-11-30 | 13G | TETRA TECH INC TTEK | VANGUARD GROUP INC | 26,634,455 10.050% | 425,950 (+1.63%) | Filing History |
| 2022-02-10 11:09 am Sale | 2022-02-10 | 13G | TETRA TECH INC TTEK | PICTET ASSET MANAGEMENT SA | 13,933,145 5.170% | -349,275 (-2.45%) | Filing History |
| 2022-02-10 08:42 am Purchase | 2021-12-31 | 13G | TETRA TECH INC TTEK | VANGUARD GROUP INC | 26,208,505 9.730% | 487,400 (+1.89%) | Filing History |
| 2022-01-27 11:13 am Unchanged | 2021-12-31 | 13G | TETRA TECH INC TTEK | BlackRock Inc. BLK | 35,209,255 13.100% | 0 (Unchanged) | Filing History |