Tetra Tech Inc SEC filings TTEK
Tetra Tech Inc has 1,000 filings in SEC EDGAR's recent list, going back to Jan 8, 2015. Its latest annual report, Form ARS, was filed on Jan 9, 2026 for the period ended Sep 28, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 31, 2026, covering the quarter ended Jun 28, 2026. The most recent current report (Form 8-K) was filed on Sep 10, 2026 (other events). The company's fiscal year ends on September 27.
| Form | Description | Filed | Period |
|---|---|---|---|
| UPLOAD | Letter from the SEC | Apr 5, 2024 | — |
| CORRESP | Letter to the SEC | Apr 5, 2024 | — |
| UPLOAD | Letter from the SEC | Mar 13, 2024 | — |
| CORRESP | Letter to the SEC | Mar 1, 2024 | — |
| UPLOAD | Letter from the SEC | Jan 30, 2024 | — |
| UPLOAD | Letter from the SEC | Apr 19, 2016 | — |
| CORRESP | Letter to the SEC | Apr 15, 2016 | — |
| UPLOAD | Letter from the SEC | Mar 28, 2016 | — |
| CORRESP | Letter to the SEC | Mar 17, 2016 | — |
| UPLOAD | Letter from the SEC | Feb 18, 2016 | — |
| UPLOAD | Letter from the SEC | Apr 14, 2015 | — |
| CORRESP | Letter to the SEC | Apr 10, 2015 | — |
| UPLOAD | Letter from the SEC | Mar 31, 2015 | — |
| CORRESP | Letter to the SEC | Mar 27, 2015 | — |
| UPLOAD | Letter from the SEC | Feb 27, 2015 | — |
Showing 15 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Engineering Services (SIC 8711)
- Listed as
- TTEK (Nasdaq)
- Fiscal year ends
- September 27
- Incorporated in
- DE
- Headquarters
- Pasadena, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 831641
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.