13 insiders reported 86 Form 4 transactions for TETRA TECH INC (TTEK) over the past 18 months (most recent 2026-06-05). Recent activity: Volpi Kirsten M (Director) Buy 1,700 shares, Feeler Jeffrey R (Director) Buy 1,900 shares, Ritrievi Kimberly E (Director) Buy 25,883 shares, Ritrievi Kimberly E (Director) Buy 2,250 shares, Ritrievi Kimberly E (Director) Buy 1,925 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-05 | Volpi Kirsten M | Director | Buy | 1,700 | $16,303 |
| 2026-05-15 | Feeler Jeffrey R | Director | Buy | 1,900 | $50,179 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 25,883 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 2,250 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 1,925 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 2,910 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 2,050 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 795 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 795 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 1,900 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 2,125 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 1,718 | $0 |
| 2026-03-18 | Ritrievi Kimberly E | Director | Buy | 4,500 | $0 |
| 2026-02-20 | Obiaya Christiana | Director | Buy | 495 | $0 |
| 2026-02-12 | Volpi Kirsten M | Director | Buy | 1,000 | $9,590 |
| 2026-02-06 | CARTER BRIAN N | SVP, Corporate Controller | Sell | 9,979 | $401,455 |
| 2026-02-06 | BURDICK STEVEN M | EVP, CFO | Sell | 11,100 | $0 |
| 2026-01-14 | Ritrievi Kimberly E | Director | Buy | 2,208 | $0 |
| 2026-01-14 | Birkenbeuel Gary | Director | Buy | 5,270 | $0 |
| 2026-01-14 | Birkenbeuel Gary | Director | Buy | 2,050 | $0 |
| 2026-01-14 | Birkenbeuel Gary | Director | Buy | 1,590 | $0 |
| 2026-01-14 | Birkenbeuel Gary | Director | Buy | 4,397 | $0 |
| 2025-12-02 | CARTER BRIAN N | SVP, Corporate Controller | Buy | 995 | $0 |
| 2025-12-02 | CARTER BRIAN N | SVP, Corporate Controller | Buy | 1,265 | $0 |
| 2025-12-02 | CARTER BRIAN N | SVP, Corporate Controller | Sell | 1,234 | $44,041 |
Source: SEC Form 4 filings · as of 2026-06-05