🕵️ Tetra Tech Inc ($TTEK)
SEC insider & ownership activity, last 12 months · CIK 831641 · every row links its SEC filing
Over the last 12 months insiders sold $487K against $50K of open-market buying. Brian Carter sold $401K in discretionary trades (Feb). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $50K (1 lots) · 2 sellers, $487K (2 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Brian Carter | 0 | – | 1 | $401K | Feb 4, 2026 |
| Gary R Birkenbeuel | 0 | – | 1 | $86K | Aug 14, 2025 |
| Jeffrey R. Feeler | 1 | $50K | 0 | – | May 15, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 9.7% | 13G | Feb 6, 2025 | filing ↗ | |
| Vanguard Capital Management | 5.2% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Brian Carter | $401K | Feb 4, 2026 | filing ↗ |
| Gary R Birkenbeuel | $86K | Aug 14, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Apr 29, 2026 | filing ↗ |
| Other events (8.01) | Apr 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 29, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 26, 2026 | filing ↗ |
| Other events (8.01) | Mar 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 26, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 19, 2026 | filing ↗ |
| Shareholder vote (5.07) | Feb 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 19, 2026 | filing ↗ |
| Earnings (2.02) | Jan 28, 2026 | filing ↗ |
| Other events (8.01) | Jan 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 28, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 6, 2026 | filing ↗ |
| Other events (8.01) | Jan 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 6, 2026 | filing ↗ |
| Officer/director changes (5.02) | Dec 22, 2025 | filing ↗ |
| Other events (8.01) | Dec 22, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 22, 2025 | filing ↗ |
| Earnings (2.02) | Nov 12, 2025 | filing ↗ |
| Other events (8.01) | Nov 12, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 12, 2025 | filing ↗ |
| Officer/director changes (5.02) | Oct 7, 2025 | filing ↗ |
| Other events (8.01) | Oct 7, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 7, 2025 | filing ↗ |
| Earnings (2.02) | Jul 30, 2025 | filing ↗ |
| Other events (8.01) | Jul 30, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 30, 2025 | filing ↗ |