Tetra Tech Inc (TTEK) · Insider trading
What Tetra Tech's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$50,179
1 insider, 1 trade
Sold, 12 months
$401,455
1 insider, 0% under a plan
Net, 12 months
−$351,276
bought less sold
Latest filing
2026-08-06
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Carter Brian NSVP, Corporate Controller | – | $401,455 | 1 | 2026-02-04 | 46,496 |
| Volpi Kirsten MDirector | – | $347,329 | 3 | 2025-02-04 | 68,641 |
| Birkenbeuel GaryDirector | – | $86,040 | 1 | 2025-08-14 | 37,725 |
| Feeler Jeffrey RDirector | $50,179 | – | 1 | 2026-05-15 | 1,900 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-15 | Feeler Jeffrey RDirector | Buy | 1,900 | 26.41 | $50,179 | 1,900 | Form 4 |
| 2026-02-04 | Carter Brian NSVP, Corporate Controller | Sale | 9,979 | 40.23 | $401,455 | 46,496 | Form 4 |
| 2025-08-14 | Birkenbeuel GaryDirector | Sale | 2,390 | 36.00 | $86,040 | 37,725 | Form 4 |
| 2025-02-04 | Volpi Kirsten MDirector | Sale | 1,671 | 34.41 | $57,499 | 68,641 | Form 4 |
| 2025-02-04 | Volpi Kirsten MDirector | Sale | 4,100 | 34.33 | $140,753 | 64,541 | Form 4 |
| 2025-02-04 | Volpi Kirsten MDirector | Sale | 4,345 | 34.31 | $149,077 | 60,196 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
73 × option exercise37 × shares withheld for tax22 × grant or award2 × gift1 × other
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-04 | Volpi Kirsten MDirector | Option exercise M | +2,300 | 9.59 | 74,218 | Form 4 |
| 2026-06-04 | Volpi Kirsten MDirector | Option exercise M | +1,700 | 9.59 | 71,918 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +4,500 | – | 149,908 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +2,250 | – | 152,158 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +1,925 | – | 154,083 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +2,910 | – | 156,993 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +2,050 | – | 159,043 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +795 | – | 159,838 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +795 | – | 160,633 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +1,900 | – | 162,533 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +2,125 | – | 164,658 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Option exercise M | +1,718 | – | 166,376 | Form 4 |
| 2026-03-16 | Ritrievi Kimberly EDirector | Grant or award A | +25,883 | – | 192,259 | Form 4 |
| 2026-02-19 | Obiaya ChristianaDirector | Option exercise M | +495 | – | 9,666 | Form 4 |
| 2026-02-10 | Volpi Kirsten MDirector | Option exercise M | +1,000 | 9.59 | 70,218 | Form 4 |
| 2026-02-06 | Burdick Steven MEVP, CFO | Gift G | −11,100 | – | 138,251 | Form 4 |
| 2026-01-12 | Ritrievi Kimberly EDirector | Grant or award A | +2,208 | – | 145,408 | Form 4 |
| 2026-01-12 | Birkenbeuel GaryDirector | Option exercise M | +1,590 | – | 46,635 | Form 4 |
| 2026-01-12 | Birkenbeuel GaryDirector | Grant or award A | +4,397 | – | 51,032 | Form 4 |
| 2025-11-30 | Batrack Dan LDirector, Chairman and CEO | Option exercise M | +21,255 | – | 335,564 | Form 4 |
| 2025-11-30 | Batrack Dan LDirector, Chairman and CEO | Option exercise M | +19,330 | – | 354,894 | Form 4 |
| 2025-11-30 | Batrack Dan LDirector, Chairman and CEO | Shares withheld for tax F | −22,396 | 34.74 | 332,498 | Form 4 |
| 2025-11-30 | Burdick Steven MEVP, CFO | Option exercise M | +3,645 | – | 149,581 | Form 4 |
| 2025-11-30 | Burdick Steven MEVP, CFO | Option exercise M | +3,682 | – | 153,263 | Form 4 |
| 2025-11-30 | Burdick Steven MEVP, CFO | Shares withheld for tax F | −4,044 | 34.74 | 149,219 | Form 4 |
| 2025-11-30 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +3,035 | – | 325,846 | Form 4 |
| 2025-11-30 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +3,682 | – | 329,528 | Form 4 |
| 2025-11-30 | Shoemaker Leslie LEVP, Chief Sustainability | Shares withheld for tax F | −3,707 | 34.74 | 325,821 | Form 4 |
| 2025-11-30 | Carter Brian NSVP, Corporate Controller | Option exercise M | +1,520 | – | 56,747 | Form 4 |
| 2025-11-30 | Carter Brian NSVP, Corporate Controller | Option exercise M | +1,228 | – | 57,975 | Form 4 |
| 2025-11-30 | Carter Brian NSVP, Corporate Controller | Shares withheld for tax F | −1,500 | 34.74 | 56,475 | Form 4 |
| 2025-11-30 | Volpi Kirsten MDirector | Option exercise M | +1,718 | – | 68,218 | Form 4 |
| 2025-11-30 | Argus Roger RPresident | Option exercise M | +2,735 | – | 40,300 | Form 4 |
| 2025-11-30 | Argus Roger RPresident | Option exercise M | +2,455 | – | 42,755 | Form 4 |
| 2025-11-30 | Argus Roger RPresident | Shares withheld for tax F | −2,865 | 34.74 | 39,890 | Form 4 |
| 2025-11-30 | Hopson PrestonEVP, Chief Legal/Human Capital | Option exercise M | +2,735 | – | 82,731 | Form 4 |
| 2025-11-30 | Hopson PrestonEVP, Chief Legal/Human Capital | Option exercise M | +2,455 | – | 85,186 | Form 4 |
| 2025-11-30 | Hopson PrestonEVP, Chief Legal/Human Capital | Shares withheld for tax F | −2,044 | 34.74 | 83,142 | Form 4 |
| 2025-11-30 | Obiaya ChristianaDirector | Option exercise M | +1,718 | – | 9,171 | Form 4 |
| 2025-11-30 | Gandhi PrashantDirector | Option exercise M | +1,718 | – | 16,553 | Form 4 |
| 2025-11-28 | Volpi Kirsten MDirector | Option exercise M | +1,000 | 9.59 | 69,218 | Form 4 |
| 2025-11-18 | Carter Brian NSVP, Corporate Controller | Option exercise M | +995 | – | 50,219 | Form 4 |
| 2025-11-18 | Carter Brian NSVP, Corporate Controller | Option exercise M | +1,265 | – | 51,484 | Form 4 |
| 2025-11-18 | Carter Brian NSVP, Corporate Controller | Shares withheld for tax F | −1,234 | 35.69 | 50,250 | Form 4 |
| 2025-11-18 | Carter Brian NSVP, Corporate Controller | Grant or award A | +10,954 | – | 61,204 | Form 4 |
| 2025-11-18 | Carter Brian NSVP, Corporate Controller | Shares withheld for tax F | −5,977 | 35.69 | 55,227 | Form 4 |
| 2025-11-18 | Batrack Dan LDirector, Chairman and CEO | Option exercise M | +14,030 | – | 239,897 | Form 4 |
| 2025-11-18 | Batrack Dan LDirector, Chairman and CEO | Option exercise M | +19,015 | – | 258,912 | Form 4 |
| 2025-11-18 | Batrack Dan LDirector, Chairman and CEO | Shares withheld for tax F | −18,235 | 35.69 | 240,677 | Form 4 |
| 2025-11-18 | Batrack Dan LDirector, Chairman and CEO | Grant or award A | +164,285 | – | 404,962 | Form 4 |
| 2025-11-18 | Batrack Dan LDirector, Chairman and CEO | Shares withheld for tax F | −90,653 | 35.69 | 314,309 | Form 4 |
| 2025-11-18 | Burdick Steven MEVP, CFO | Option exercise M | +2,520 | – | 133,635 | Form 4 |
| 2025-11-18 | Burdick Steven MEVP, CFO | Option exercise M | +3,170 | – | 136,805 | Form 4 |
| 2025-11-18 | Burdick Steven MEVP, CFO | Shares withheld for tax F | −3,141 | 35.69 | 133,664 | Form 4 |
| 2025-11-18 | Burdick Steven MEVP, CFO | Grant or award A | +27,384 | – | 161,048 | Form 4 |
| 2025-11-18 | Burdick Steven MEVP, CFO | Shares withheld for tax F | −15,112 | 35.69 | 145,936 | Form 4 |
| 2025-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +2,520 | – | 310,510 | Form 4 |
| 2025-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +3,170 | – | 313,680 | Form 4 |
| 2025-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Shares withheld for tax F | −3,141 | 35.69 | 310,539 | Form 4 |
| 2025-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Grant or award A | +27,384 | – | 337,923 | Form 4 |
| 2025-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Shares withheld for tax F | −15,112 | 35.69 | 322,811 | Form 4 |
| 2025-11-18 | Volpi Kirsten MDirector | Grant or award A | +4,104 | – | 66,500 | Form 4 |
| 2025-11-18 | Argus Roger RPresident | Option exercise M | +2,055 | – | 27,747 | Form 4 |
| 2025-11-18 | Argus Roger RPresident | Option exercise M | +2,535 | – | 30,282 | Form 4 |
| 2025-11-18 | Argus Roger RPresident | Shares withheld for tax F | −2,533 | 35.69 | 27,749 | Form 4 |
| 2025-11-18 | Argus Roger RPresident | Grant or award A | +21,902 | – | 49,651 | Form 4 |
| 2025-11-18 | Argus Roger RPresident | Shares withheld for tax F | −12,086 | 35.69 | 37,565 | Form 4 |
| 2025-11-18 | Hopson PrestonEVP, Chief Legal/Human Capital | Option exercise M | +2,055 | – | 65,986 | Form 4 |
| 2025-11-18 | Hopson PrestonEVP, Chief Legal/Human Capital | Option exercise M | +2,535 | – | 68,521 | Form 4 |
| 2025-11-18 | Hopson PrestonEVP, Chief Legal/Human Capital | Shares withheld for tax F | −1,807 | 35.69 | 66,714 | Form 4 |
| 2025-11-18 | Hopson PrestonEVP, Chief Legal/Human Capital | Grant or award A | +21,902 | – | 88,616 | Form 4 |
| 2025-11-18 | Hopson PrestonEVP, Chief Legal/Human Capital | Shares withheld for tax F | −8,620 | 35.69 | 79,996 | Form 4 |
| 2025-11-18 | Obiaya ChristianaDirector | Grant or award A | +3,643 | – | 7,453 | Form 4 |
| 2025-11-18 | Gandhi PrashantDirector | Grant or award A | +4,104 | – | 14,835 | Form 4 |
| 2025-02-27 | Douglas John M.Director | Option exercise M | +718 | 27.91 | 718 | Form 4 |
| 2025-02-27 | Douglas John M.Director | Shares withheld for tax F | −108 | 27.91 | 610 | Form 4 |
| 2025-02-05 | Volpi Kirsten MDirector | Option exercise M | +6,000 | 9.59 | 66,196 | Form 4 |
| 2025-02-05 | Volpi Kirsten MDirector | Gift G | −3,800 | – | 62,396 | Form 4 |
| 2025-01-01 | Birkenbeuel GaryDirector | Grant or award A | +5,270 | – | 42,995 | Form 4 |
| 2025-01-01 | Birkenbeuel GaryDirector | Option exercise M | +2,050 | – | 45,045 | Form 4 |
| 2024-11-30 | Argus Roger RPresident, Commer/Int'l Group | Option exercise M | +2,735 | – | 27,050 | Form 4 |
| 2024-11-30 | Argus Roger RPresident, Commer/Int'l Group | Shares withheld for tax F | −1,507 | 41.51 | 25,543 | Form 4 |
| 2024-11-30 | Batrack Dan LDirector, Chairman, CEO and President | Option exercise M | +21,255 | – | 237,426 | Form 4 |
| 2024-11-30 | Batrack Dan LDirector, Chairman, CEO and President | Shares withheld for tax F | −11,708 | 41.51 | 225,718 | Form 4 |
| 2024-11-30 | Burdick Steven MEVP, CFO | Option exercise M | +3,645 | – | 132,974 | Form 4 |
| 2024-11-30 | Burdick Steven MEVP, CFO | Shares withheld for tax F | −2,008 | 41.51 | 130,966 | Form 4 |
| 2024-11-30 | Carter Brian NSVP, Corporate Controller | Option exercise M | +1,520 | – | 50,052 | Form 4 |
| 2024-11-30 | Carter Brian NSVP, Corporate Controller | Shares withheld for tax F | −828 | 41.51 | 49,224 | Form 4 |
| 2024-11-30 | Gandhi PrashantDirector | Option exercise M | +2,125 | – | 10,731 | Form 4 |
| 2024-11-30 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Option exercise M | +2,735 | – | 64,859 | Form 4 |
| 2024-11-30 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Shares withheld for tax F | −1,077 | 41.51 | 63,782 | Form 4 |
| 2024-11-30 | Obiaya ChristianaDirector | Option exercise M | +2,125 | – | 3,810 | Form 4 |
| 2024-11-30 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +3,040 | – | 309,516 | Form 4 |
| 2024-11-30 | Shoemaker Leslie LEVP, Chief Sustainability | Shares withheld for tax F | −1,675 | 41.51 | 307,841 | Form 4 |
| 2024-11-30 | Volpi Kirsten MDirector | Option exercise M | +2,125 | – | 70,312 | Form 4 |
| 2024-11-20 | Ritrievi Kimberly EDirector | Other J | −0 | – | 143,200 | Form 4/A |
| 2024-11-20 | Argus Roger RPresident, Commer/Int'l Group | Grant or award A | +22,705 | – | 36,822 | Form 4 |
| 2024-11-20 | Argus Roger RPresident, Commer/Int'l Group | Shares withheld for tax F | −12,507 | 40.22 | 24,315 | Form 4 |
| 2024-11-20 | Batrack Dan LDirector, Chairman, CEO and President | Grant or award A | +154,901 | – | 301,491 | Form 4 |
| 2024-11-20 | Batrack Dan LDirector, Chairman, CEO and President | Shares withheld for tax F | −85,320 | 40.22 | 216,171 | Form 4 |
| 2024-11-20 | Burdick Steven MEVP, CFO | Grant or award A | +27,830 | – | 144,659 | Form 4 |
| 2024-11-20 | Burdick Steven MEVP, CFO | Shares withheld for tax F | −15,330 | 40.22 | 129,329 | Form 4 |
| 2024-11-20 | Carter Brian NSVP, Corporate Controller | Grant or award A | +10,984 | – | 54,514 | Form 4 |
| 2024-11-20 | Carter Brian NSVP, Corporate Controller | Shares withheld for tax F | −5,982 | 40.22 | 48,532 | Form 4 |
| 2024-11-20 | Gandhi PrashantDirector | Grant or award A | +4,921 | – | 8,606 | Form 4 |
| 2024-11-20 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Grant or award A | +22,705 | – | 71,059 | Form 4 |
| 2024-11-20 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Shares withheld for tax F | −8,935 | 40.22 | 62,124 | Form 4 |
| 2024-11-20 | Ritrievi Kimberly EDirector | Grant or award A | +2,390 | – | 145,590 | Form 4 |
| 2024-11-20 | Shoemaker Leslie LEVP, Chief Sustainability | Grant or award A | +13,920 | – | 314,144 | Form 4 |
| 2024-11-20 | Shoemaker Leslie LEVP, Chief Sustainability | Shares withheld for tax F | −7,668 | 40.22 | 306,476 | Form 4 |
| 2024-11-20 | Volpi Kirsten MDirector | Grant or award A | +4,397 | – | 68,187 | Form 4 |
| 2024-11-18 | Argus Roger RPresident, Commer/Int'l Group | Option exercise M | +2,865 | – | 13,635 | Form 4 |
| 2024-11-18 | Argus Roger RPresident, Commer/Int'l Group | Option exercise M | +2,055 | – | 15,690 | Form 4 |
| 2024-11-18 | Argus Roger RPresident, Commer/Int'l Group | Option exercise M | +2,535 | – | 18,225 | Form 4 |
| 2024-11-18 | Argus Roger RPresident, Commer/Int'l Group | Shares withheld for tax F | −4,108 | 41.12 | 14,117 | Form 4 |
| 2024-11-18 | Batrack Dan LDirector, Chairman, CEO and President | Option exercise M | +16,390 | – | 140,775 | Form 4 |
| 2024-11-18 | Batrack Dan LDirector, Chairman, CEO and President | Option exercise M | +14,030 | – | 154,805 | Form 4 |
| 2024-11-18 | Batrack Dan LDirector, Chairman, CEO and President | Option exercise M | +19,015 | – | 173,820 | Form 4 |
| 2024-11-18 | Batrack Dan LDirector, Chairman, CEO and President | Shares withheld for tax F | −27,230 | 41.12 | 146,590 | Form 4 |
| 2024-11-18 | Burdick Steven MEVP, CFO | Option exercise M | +3,685 | – | 116,305 | Form 4 |
| 2024-11-18 | Burdick Steven MEVP, CFO | Option exercise M | +2,520 | – | 118,825 | Form 4 |
| 2024-11-18 | Burdick Steven MEVP, CFO | Option exercise M | +3,170 | – | 121,995 | Form 4 |
| 2024-11-18 | Burdick Steven MEVP, CFO | Shares withheld for tax F | −5,166 | 41.12 | 116,829 | Form 4 |
| 2024-11-18 | Carter Brian NSVP, Corporate Controller | Option exercise M | +1,535 | – | 43,335 | Form 4 |
| 2024-11-18 | Carter Brian NSVP, Corporate Controller | Option exercise M | +995 | – | 44,330 | Form 4 |
| 2024-11-18 | Carter Brian NSVP, Corporate Controller | Option exercise M | +1,270 | – | 45,600 | Form 4 |
| 2024-11-18 | Carter Brian NSVP, Corporate Controller | Shares withheld for tax F | −2,070 | 41.12 | 43,530 | Form 4 |
| 2024-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +3,685 | – | 299,700 | Form 4 |
| 2024-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +2,520 | – | 302,220 | Form 4 |
| 2024-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Option exercise M | +3,170 | – | 305,390 | Form 4 |
| 2024-11-18 | Shoemaker Leslie LEVP, Chief Sustainability | Shares withheld for tax F | −5,166 | 41.12 | 300,224 | Form 4 |
| 2024-11-18 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Option exercise M | +3,070 | – | 46,780 | Form 4 |
| 2024-11-18 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Option exercise M | +2,055 | – | 48,835 | Form 4 |
| 2024-11-18 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Option exercise M | +2,535 | – | 51,370 | Form 4 |
| 2024-11-18 | Hopson Preston IIIEVP, Chief Legal/Human Capital | Shares withheld for tax F | −3,016 | 41.12 | 48,354 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.