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Tetra Tech Inc SEC Filings
What Tetra Tech Inc has told the SEC happened, by the 8-K items and forms it filed under: when it reported results, who joined or left, what it bought or sold, and whether its auditor or its accounts ever changed.
TTEK overview →Filings on file
112
since Nov 10, 2016
Warning signs
0
none filed
Last results
Jul 29, 2026
8-K item 2.02
Industry
Services-Engineering Services
SIC 8711
Newest first
Each label is a form type or an 8-K item as filed; each row links to the filing.
| Filed | What it reports | Document |
|---|---|---|
| Mar 26, 2026 | Executive or director change 8-K | Read ↗ |
| Feb 20, 2026 | Executive or director changeShareholder vote 8-K | Read ↗ |
| Jan 6, 2026 | Executive or director change 8-K | Read ↗ |
| Dec 22, 2025 | Executive or director change 8-K | Read ↗ |
| Oct 7, 2025 | Executive or director change 8-K | Read ↗ |
| Feb 28, 2025 | Executive or director changeShareholder vote 8-K | Read ↗ |
| Aug 2, 2024 | Executive or director change 8-K | Read ↗ |
| May 24, 2024 | Executive or director change 8-K | Read ↗ |
| May 8, 2023 | Executive or director change 8-K | Read ↗ |
| Nov 15, 2022 | Executive or director change 8-K | Read ↗ |
| Aug 2, 2022 | Executive or director change 8-K | Read ↗ |
| Feb 22, 2022 | Executive or director change 8-K | Read ↗ |
| Oct 2, 2019 | Executive or director change 8-K | Read ↗ |
| Nov 7, 2018 | Executive or director changeResults announced 8-K | Read ↗ |
| Aug 1, 2018 | Executive or director changeResults announcedMaterial agreement 8-K | Read ↗ |
| Mar 9, 2018 | Executive or director changeShareholder vote 8-K | Read ↗ |
| Jan 22, 2018 | Executive or director change 8-K | Read ↗ |
| Nov 9, 2017 | Executive or director changeResults announced 8-K | Read ↗ |
| Nov 10, 2016 | Executive or director changeResults announced 8-K | Read ↗ |
Source: Tetra Tech Inc's EDGAR filing history, the last ten years. The labels are the form types and 8-K item numbers the company filed under, not a reading of what it wrote — an item 5.02 can be a chief executive fired or a director retiring on schedule — so each row links to the filing.
More on TTEK
Company overviewEverything on TTEK in one place, with the price.Insider tradingWhat TTEK's own officers and directors buy and sell.Who owns itEvery manager reporting a position in TTEK.Funds holding itWhich funds and ETFs hold TTEK, and how big a bet.LobbyingWhat TTEK spends lobbying Congress, and on what.Who lobbies for itThe lobbyists on TTEK's account, and who they worked for.PatentsWhat TTEK is filing at the patent office.