Tetra Tech (NASDAQ:TTEK) raises FY2026 Adj EPS guidance from $1.46-$1.56 to $1.50-$1.58 vs $1.51 analyst estimate. Raises FY2026 sales outlook from $4.150 billion-$4.300 billion to $4.250 billion-$4.400 billion vs $4.226 billion estimate.