TTEK News
Official issuer or fund updates, exact SEC current reports, and large established publisher coverage, newest first. Every lawfully retained item remains in the corpus; each public page contains at most 100 rows. Headlines open the exact source; summaries are concise descriptions and not investment recommendations. Captured 2026-08-31.
| Date | Type | Publisher | Headline | Summary |
|---|---|---|---|---|
| 2026-07-29 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2026-04-29 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2026-03-26 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2026-02-20 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,5.07,9.01. |
| 2026-01-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2026-01-06 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2025-12-22 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2025-11-12 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2025-10-07 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2025-07-30 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2025-05-07 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,2.02,2.03,3.03,8.01,9.01. |
| 2025-02-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,5.07. |
| 2025-01-30 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2025-01-17 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 8.01,9.01. |
| 2024-11-13 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2024-09-06 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.03,9.01. |
| 2024-08-02 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2024-07-31 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2024-05-24 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02. |
| 2024-05-01 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2024-03-01 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2024-01-31 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2023-11-15 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2023-11-15 | Current report | SEC filing | TETRA TECH INC filed Form 8-K/A | TETRA TECH INC filed Form 8-K/A covering items 5.07. |
| 2023-08-22 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,2.03,3.02,8.01,9.01. |
| 2023-08-09 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2023-05-10 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2023-05-08 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02. |
| 2023-04-10 | Current report | SEC filing | TETRA TECH INC filed Form 8-K/A | TETRA TECH INC filed Form 8-K/A covering items 2.01,9.01. |
| 2023-03-03 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2023-02-01 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2023-01-24 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.01,7.01,9.01. |
| 2022-12-12 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 7.01,9.01. |
| 2022-11-15 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2022-11-10 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.03,9.01. |
| 2022-11-09 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2022-11-03 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 7.01,9.01. |
| 2022-10-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,1.02,3.03,8.01,9.01. |
| 2022-10-12 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 7.01,9.01. |
| 2022-10-11 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,3.03,8.01,9.01. |
| 2022-09-26 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,2.03,8.01,9.01. |
| 2022-08-03 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2022-08-02 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2022-05-04 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2022-03-04 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2022-02-22 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,3.03,8.01,9.01. |
| 2022-02-22 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2022-02-02 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2021-11-17 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2021-10-07 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 8.01,9.01. |
| 2021-07-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2021-04-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2021-02-25 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2021-01-27 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2020-11-12 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2020-07-29 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2020-06-09 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,9.01. |
| 2020-04-29 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2020-02-27 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2020-01-29 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2019-11-13 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2019-10-02 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01,9.01. |
| 2019-07-31 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2019-05-01 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2019-03-01 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2019-01-30 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2018-11-07 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,5.02,8.01,9.01. |
| 2018-08-01 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,2.02,3.03,5.02,8.01,9.01. |
| 2018-05-02 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2018-03-09 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,5.07,9.01. |
| 2018-01-31 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2018-01-22 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,8.01. |
| 2017-11-09 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,5.02,8.01,9.01. |
| 2017-08-03 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2017-05-04 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2017-03-03 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2017-02-02 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2016-11-10 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,5.02,8.01,9.01. |
| 2016-07-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2016-04-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2016-03-04 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2016-01-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2016-01-19 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 8.01,9.01. |
| 2015-11-12 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2015-10-14 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 8.01,9.01. |
| 2015-07-30 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2015-06-02 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,9.01. |
| 2015-05-13 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02. |
| 2015-04-30 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2015-04-09 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02. |
| 2015-03-06 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2015-01-29 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2014-11-13 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2014-09-25 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,9.01. |
| 2014-07-31 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,7.01,9.01. |
| 2014-06-24 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 1.01,9.01. |
| 2014-05-01 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,8.01,9.01. |
| 2014-02-28 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.07. |
| 2014-01-30 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 2.02,7.01,9.01. |
| 2013-11-18 | Current report | SEC filing | TETRA TECH INC filed Form 8-K | TETRA TECH INC filed Form 8-K covering items 5.02,9.01. |