TTEK
Tetra Tech Inc
NASDAQ: TTEK · INDUSTRIALS · ENGINEERING & CONSTRUCTION
$36.78
-0.24% today
Updated 2026-10-28
Market cap
$9.44B
P/E ratio
22.21
P/S ratio
2.17x
EPS (TTM)
$1.66
Dividend yield
0.72%
52W range
$26 – $43
Volume
2.2M
Tetra Tech Inc (TTEK) Insider transactions
Net insider activity
Net buying (218,278 shares)
Buy transactions
55
Sell transactions
45
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2031-11-18 | BATRACK, DAN L | Director, CHIEF EXECUTIVE OFFICER | Sale | 15,000 | $28.76 | $431377.50 |
| 2026-08-04 | VOLPI, KIRSTEN M | Director | Sale | 2,300 | — | — |
| 2026-08-04 | VOLPI, KIRSTEN M | Director | Buy | 2,300 | $9.59 | $22057.00 |
| 2026-06-04 | VOLPI, KIRSTEN M | Director | Sale | 1,700 | — | — |
| 2026-06-04 | VOLPI, KIRSTEN M | Director | Buy | 1,700 | $9.59 | $16303.00 |
| 2026-05-15 | FEELER, JEFFREY R | Director | Buy | 1,900 | $26.41 | $50179.00 |
| 2026-04-27 | THORNBURG, ERIC W | Director | Buy | 1,259 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 4,500 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 2,910 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 2,250 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 2,125 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 2,050 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 1,925 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 1,900 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 1,718 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Sale | 795 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 25,883 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 4,500 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 2,910 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 2,250 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 2,125 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 2,050 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 1,925 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 1,900 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 1,718 | — | — |
| 2026-03-16 | RITRIEVI, KIMBERLY E | Director | Buy | 795 | — | — |
| 2026-02-19 | OBIAYA, CHRISTIANA | Director | Sale | 495 | — | — |
| 2026-02-19 | OBIAYA, CHRISTIANA | Director | Buy | 495 | — | — |
| 2026-02-19 | ARGUS, ROGER R | President and CEO | Buy | 28,174 | — | — |
| 2026-02-10 | VOLPI, KIRSTEN M | Director | Sale | 1,000 | — | — |
| 2026-02-10 | VOLPI, KIRSTEN M | Director | Buy | 1,000 | $9.59 | $9590.00 |
| 2026-02-06 | BURDICK, STEVEN M | EVP, CFO | Sale | 11,100 | — | — |
| 2026-02-04 | CARTER, BRIAN N | SVP, Corporate Controller | Sale | 9,979 | $40.23 | $401405.28 |
| 2026-01-26 | HARDWICK, M SUSAN | Director | Buy | 1,754 | — | — |
| 2026-01-26 | FEELER, JEFFREY R | Director | Buy | 1,754 | — | — |
| 2026-01-12 | RITRIEVI, KIMBERLY E | Director | Buy | 2,208 | — | — |
| 2026-01-12 | BIRKENBEUEL, GARY | Director | Sale | 1,590 | — | — |
| 2026-01-12 | BIRKENBEUEL, GARY | Director | Buy | 4,397 | — | — |
| 2026-01-12 | BIRKENBEUEL, GARY | Director | Buy | 1,590 | — | — |
| 2025-11-30 | VOLPI, KIRSTEN M | Director | Sale | 1,718 | — | — |
| 2025-11-30 | VOLPI, KIRSTEN M | Director | Buy | 1,718 | — | — |
| 2025-11-30 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Sale | 3,682 | — | — |
| 2025-11-30 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Sale | 3,035 | — | — |
| 2025-11-30 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Sale | 3,707 | $34.74 | $128781.18 |
| 2025-11-30 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Buy | 3,682 | — | — |
| 2025-11-30 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Buy | 3,035 | — | — |
| 2025-11-30 | OBIAYA, CHRISTIANA | Director | Sale | 1,718 | — | — |
| 2025-11-30 | OBIAYA, CHRISTIANA | Director | Buy | 1,718 | — | — |
| 2025-11-30 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Sale | 2,735 | — | — |
| 2025-11-30 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Sale | 2,455 | — | — |
| 2025-11-30 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Buy | 2,735 | — | — |
| 2025-11-30 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Buy | 2,455 | — | — |
| 2025-11-30 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Sale | 2,044 | $34.74 | $71008.56 |
| 2025-11-30 | GANDHI, PRASHANT | Director | Sale | 1,718 | — | — |
| 2025-11-30 | GANDHI, PRASHANT | Director | Buy | 1,718 | — | — |
| 2025-11-30 | CARTER, BRIAN N | SVP, Corporate Controller | Sale | 1,520 | — | — |
| 2025-11-30 | CARTER, BRIAN N | SVP, Corporate Controller | Sale | 1,228 | — | — |
| 2025-11-30 | CARTER, BRIAN N | SVP, Corporate Controller | Buy | 1,520 | — | — |
| 2025-11-30 | CARTER, BRIAN N | SVP, Corporate Controller | Sale | 1,500 | $34.74 | $52110.00 |
| 2025-11-30 | CARTER, BRIAN N | SVP, Corporate Controller | Buy | 1,228 | — | — |
| 2025-11-30 | BURDICK, STEVEN M | EVP, CFO | Sale | 3,682 | — | — |
| 2025-11-30 | BURDICK, STEVEN M | EVP, CFO | Sale | 3,645 | — | — |
| 2025-11-30 | BURDICK, STEVEN M | EVP, CFO | Sale | 4,044 | $34.74 | $140488.56 |
| 2025-11-30 | BURDICK, STEVEN M | EVP, CFO | Buy | 3,682 | — | — |
| 2025-11-30 | BURDICK, STEVEN M | EVP, CFO | Buy | 3,645 | — | — |
| 2025-11-30 | BATRACK, DAN L | Director, Chairman and CEO | Sale | 21,255 | — | — |
| 2025-11-30 | BATRACK, DAN L | Director, Chairman and CEO | Sale | 19,330 | — | — |
| 2025-11-30 | BATRACK, DAN L | Director, Chairman and CEO | Sale | 22,396 | $34.74 | $778037.04 |
| 2025-11-30 | BATRACK, DAN L | Director, Chairman and CEO | Buy | 21,255 | — | — |
| 2025-11-30 | BATRACK, DAN L | Director, Chairman and CEO | Buy | 19,330 | — | — |
| 2025-11-30 | ARGUS, ROGER R | President | Sale | 2,735 | — | — |
| 2025-11-30 | ARGUS, ROGER R | President | Sale | 2,455 | — | — |
| 2025-11-30 | ARGUS, ROGER R | President | Sale | 2,865 | $34.74 | $99530.10 |
| 2025-11-30 | ARGUS, ROGER R | President | Buy | 2,735 | — | — |
| 2025-11-30 | ARGUS, ROGER R | President | Buy | 2,455 | — | — |
| 2025-11-28 | VOLPI, KIRSTEN M | Director | Sale | 1,000 | $9.59 | $9590.00 |
| 2025-11-28 | VOLPI, KIRSTEN M | Director | Buy | 1,000 | $9.59 | $9590.00 |
| 2025-11-19 | VOLPI, KIRSTEN M | Director | Buy | 1,964 | — | — |
| 2025-11-19 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Buy | 19,641 | — | — |
| 2025-11-19 | RITRIEVI, KIMBERLY E | Director | Buy | 1,964 | — | — |
| 2025-11-19 | OBIAYA, CHRISTIANA | Director | Buy | 1,964 | — | — |
| 2025-11-19 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Buy | 14,029 | — | — |
| 2025-11-19 | GANDHI, PRASHANT | Director | Buy | 1,964 | — | — |
| 2025-11-19 | CARTER, BRIAN N | SVP, Corporate Controller | Buy | 5,612 | — | — |
| 2025-11-19 | BURDICK, STEVEN M | EVP, CFO | Buy | 19,641 | — | — |
| 2025-11-19 | BIRKENBEUEL, GARY | Director | Buy | 1,964 | — | — |
| 2025-11-19 | BATRACK, DAN L | Director, Chairman and CEO | Buy | 101,010 | — | — |
| 2025-11-19 | ARGUS, ROGER R | President | Buy | 19,641 | — | — |
| 2025-11-18 | VOLPI, KIRSTEN M | Director | Buy | 4,104 | — | — |
| 2025-11-18 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Sale | 3,170 | — | — |
| 2025-11-18 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Sale | 2,520 | — | — |
| 2025-11-18 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Buy | 27,384 | — | — |
| 2025-11-18 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Sale | 15,112 | $35.69 | $539347.28 |
| 2025-11-18 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Buy | 3,170 | — | — |
| 2025-11-18 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Sale | 3,141 | $35.69 | $112102.29 |
| 2025-11-18 | SHOEMAKER, LESLIE L | EVP, Chief Sustainability | Buy | 2,520 | — | — |
| 2025-11-18 | OBIAYA, CHRISTIANA | Director | Buy | 3,643 | — | — |
| 2025-11-18 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Sale | 2,535 | — | — |
| 2025-11-18 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Sale | 2,055 | — | — |
| 2025-11-18 | HOPSON, PRESTON | EVP, Chief Legal/Human Capital | Buy | 21,902 | — | — |
Frequently asked questions
Are TTEK insiders buying or selling?
Over the transactions on record, TTEK insiders have been net buyers, with about $2.76M in stock sold across 45 sales, against 5 open-market purchases.
Does insider selling at TTEK mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which TTEK insiders are selling the most?
Recent selling is concentrated in a few names. BATRACK, DAN L accounts for the largest share on record, with about $1.21M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.