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 |
|---|---|---|---|
| Annual insider summary | 5 | 2010-10-07 | 2010-10-03 |
| Quarterly report | 10-Q | 2010-07-30 | 2010-06-27 |
| Major company event | 8-K | 2010-07-29 | 2010-07-28 |
| Insider trade | 4 | 2010-05-05 | 2010-05-04 |
| Insider trade | 4 | 2010-05-04 | 2010-04-30 |
| Quarterly report | 10-Q | 2010-04-30 | 2010-03-28 |
| Major company event | 8-K | 2010-04-29 | 2010-04-28 |
| SEC correspondence | UPLOAD | 2010-04-19 | - |
| Company correspondence | CORRESP | 2010-04-15 | - |
| SEC correspondence | UPLOAD | 2010-04-05 | - |
| Company correspondence | CORRESP | 2010-03-29 | - |
| Annual report (amended) | 10-K/A | 2010-03-26 | 2009-09-27 |
| SEC correspondence | UPLOAD | 2010-03-16 | - |
| Company correspondence | CORRESP | 2010-03-11 | - |
| Insider trade | 4 | 2010-03-02 | 2010-03-01 |
| Major company event | 8-K | 2010-03-02 | 2010-02-25 |
| Insider trade | 4 | 2010-03-01 | 2010-03-01 |
| Insider trade | 4 | 2010-03-01 | 2010-03-01 |
| Insider trade | 4 | 2010-03-01 | 2010-03-01 |
| Insider trade | 4 | 2010-03-01 | 2010-03-01 |
| Insider trade | 4 | 2010-03-01 | 2010-03-01 |
| SEC correspondence | UPLOAD | 2010-02-22 | - |
| Insider trade | 4 | 2010-02-16 | 2010-02-12 |
| Passive ownership stake | SC 13G | 2010-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 2010-02-12 | - |
| Insider trade | 4 | 2010-02-09 | 2010-02-05 |
| Quarterly report | 10-Q | 2010-01-29 | 2009-12-27 |
| Passive ownership stake | SC 13G | 2010-01-29 | - |
| Major company event | 8-K | 2010-01-28 | 2010-01-27 |
| Proxy statement | DEF 14A | 2010-01-11 | 2010-02-25 |
| Insider trade | 4 | 2009-12-11 | 2009-12-11 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-12-08 | 2009-12-04 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |
| Insider trade | 4 | 2009-11-17 | 2009-11-13 |