Tetra Tech (NASDAQ:TTEK) raises FY2026 Adj EPS guidance from $1.50-$1.58 to $1.56-$1.59 vs $1.55 analyst estimate. Narrows FY2026 sales outlook from $4.250 billion-$4.400 billion to $4.315 billion-$4.365 billion vs $4.308 billion estimate.