TTEK - CIK 0000831641
TETRA TECH INC has filed 2,115 documents with the SEC between 1995 and 2026. The most frequent type is insider trade (1,320 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| NT 10-K | - | 2006-12-18 | 2006-10-01 |
| Major company event | 8-K | 2006-12-18 | 2006-12-15 |
| Company correspondence | CORRESP | 2006-12-15 | - |
| Company correspondence | CORRESP | 2006-12-11 | - |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-12-07 | 2006-12-05 |
| Insider trade | 4 | 2006-11-22 | 2006-11-22 |
| SEC correspondence | UPLOAD | 2006-11-22 | - |
| Insider trade | 4 | 2006-11-21 | 2005-11-23 |
| Major company event | 8-K | 2006-11-16 | 2006-11-13 |
| 3/A | - | 2006-11-14 | 2005-12-01 |
| Annual insider summary | 5 | 2006-11-01 | 2006-09-30 |
| Company correspondence | CORRESP | 2006-10-30 | - |
| SEC correspondence | UPLOAD | 2006-09-14 | - |
| Company correspondence | CORRESP | 2006-08-30 | - |
| Major company event | 8-K | 2006-08-17 | 2006-08-16 |
| Quarterly report | 10-Q | 2006-08-16 | 2006-07-02 |
| NT 10-Q | - | 2006-08-14 | 2006-07-02 |
| Major company event | 8-K | 2006-08-14 | 2006-08-11 |
| Insider trade | 4 | 2006-08-08 | 2006-08-08 |
| Company correspondence | CORRESP | 2006-08-04 | - |
| Major company event | 8-K | 2006-08-03 | 2006-08-02 |
| Insider trade (amended) | 4/A | 2006-07-06 | 2006-06-01 |
| Insider trade | 4 | 2006-06-28 | 2006-06-01 |
| Insider trade | 4 | 2006-06-28 | 2006-06-01 |
| Insider trade | 4 | 2006-06-28 | 2006-06-01 |
| Insider trade | 4 | 2006-06-28 | 2006-06-01 |
| Insider trade | 4 | 2006-06-28 | 2006-06-01 |
| Insider trade | 4 | 2006-06-28 | 2006-06-01 |
| Insider trade | 4 | 2006-06-28 | 2006-06-01 |
| SEC correspondence | UPLOAD | 2006-06-21 | - |
| Insider trade | 4 | 2006-05-17 | 2006-05-17 |
| Insider trade | 4 | 2006-05-17 | 2006-03-06 |
| Company correspondence | CORRESP | 2006-05-12 | - |
| Quarterly report | 10-Q | 2006-05-12 | 2006-04-02 |
| Major company event | 8-K | 2006-05-04 | 2006-05-03 |
| SEC correspondence | UPLOAD | 2006-04-11 | - |
| Major company event | 8-K | 2006-03-10 | 2006-03-06 |