Form4insider filings, from the source

Company · CIK 0000831641 · SIC 8711 — Services-Engineering Services · Nasdaq

TETRA TECH INC · TTEK

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 4, 2026 MForm 4 →Aug 6, 5:17 pm EDTKirsten M VolpiDirector2,300$9.59$22,05774,218—
Jun 4, 2026 MForm 4 →Jun 5, 7:08 pm EDTKirsten M VolpiDirector1,700$9.59$16,30371,918—

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 4, 2026 MForm 4 →Aug 6, 5:17 pm EDTKirsten M VolpiDirector2,300——4,000—
Jun 4, 2026 MForm 4 →Jun 5, 7:08 pm EDTKirsten M VolpiDirector1,700——6,300—