Tetra Tech Inc
TTEK- Exchange
- Nasdaq
- Industry
- Services-Engineering Services
- SEC CIK
- 0000831641
No open-market purchases or sales by Tetra Tech Inc insiders were filed in the last 90 days; 555 institutions reported holding it in 13F filings for Q2 2026, worth $7.32B in total; no superinvestor holds it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −32 vs. previous quarter
- 555
- 13F valueReported value at the end of Q2 2026
- $7.32B
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding TTEK, Q2 2026
No superinvestor reported holding TTEK at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Tetra Tech Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 15, 2026 (view filing) | May 15 | Same day | Feeler Jeffrey RDirector | PPurchase | +1.90K | $26.41 | +$50.2K | New position1.90K after | |
| Feb 6, 2026 (view filing) | Feb 4 | 2 days | Carter Brian NSVP, Corporate Controller | SSale | −9.98K | $40.23 | −$401.5K | −17.7%46.5K after | |
| Aug 15, 2025 (view filing) | Aug 14 | 1 day | Birkenbeuel GaryDirector | SSale | −2.39K | $36.00 | −$86.0K | −6.0%37.7K after | |
| Feb 6, 2025 (view filing) | Feb 4 | 2 days | Volpi Kirsten MDirector | SSale | −10.1K | $34.33 | −$347.3K | −14.4%60.2K after | 3 lots |
| Sep 12, 2024 (view filing) | Sep 11 | 1 day | Burdick Steven MEVP, CFO | SSale | −36.8K | $46.57 | −$1.72M | −24.6%112.6K after | |
| Sep 12, 2024 (view filing) | Sep 11 | 1 day | Ritrievi Kimberly EDirector | SSale | −6.50K | $46.48 | −$302.1K | −4.3%143.2K after | |
| Sep 12, 2024 (view filing) | Sep 10 | 2 days | Shoemaker Leslie LEVP, Chief Sustainability | SSale | −78.4K | $46.11 | −$3.62M | −20.9%296.0K after | |
| Sep 12, 2024 (view filing) | Sep 10 | 2 days | Volpi Kirsten MDirector | SSale | −1.95K | $46.00 | −$89.7K | −3.0%63.8K after | |
| Aug 8, 2024 (view filing) | Aug 6 | 2 days | Batrack Dan LCHAIRMAN AND CEO | SSale | −17.9K | $227.72 | −$4.08M | −41.9%24.9K after | |
| Aug 8, 2024 (view filing) | Aug 7 | 1 day | Hopson Preston IIISVP, General Counsel | SSale | −5.00K | $233.07 | −$1.17M | −36.4%8.74K after |
Top 10 13F holders, Q2 2026
The largest institutional positions in Tetra Tech Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 28,675,276 | $828.4M | 0.01% | +1,884,870+7.0% | Added |
| Vanguard Portfolio Management LLC | 12,467,970 | $360.2M | 0.02% | −175,124−1.4% | Reduced |
| Vanguard Capital Management LLC | 11,725,738 | $338.8M | 0.01% | +16,587+0.1% | Added |
| Capital International Investors | 11,651,238 | $336.6M | 0.07% | +265,971+2.3% | Added |
| State Street Corp | 9,761,640 | $282.0M | 0.01% | +125,728+1.3% | Added |
| FMR LLC | 8,768,611 | $253.3M | 0.01% | +8,440,359+2,571.3% | Added |
| Geode Capital Management, LLC | 6,833,071 | $197.4M | 0.01% | +1,615,623+31.0% | Added |
| FIL Ltd | 5,471,691 | $158.1M | 0.11% | +639,019+13.2% | Added |
| Amundi | 5,098,519 | $147.3M | 0.04% | +349,272+7.4% | Added |
| Fuller & Thaler Asset Management, Inc. | 4,921,268 | $142.2M | 0.39% | +1,606,825+48.5% | Added |