Exhibit 11. Computation of Net Income (Loss) Per Share. TRANSTECH INDUSTRIES, INC. COMPUTATION OF NET INCOME (LOSS) PER COMMON SHARE For the Six Months Ended June 30, BASIC: 2002 2001 Weighted Average Common Shares Outstanding 2,979,190 2,907,919 Net Income (Loss) $6,399,000 $ (514,000) Basic Net Income (Loss) Per Common Share: Net Income (Loss) per share $2.15 $(.18) DILUTED: Weighted Average Common Shares Outstanding 2,979,190 2,907,919 Dilutive Stock Options Based Upon the Treasury Stock Method - - 2,979,190 2,907,919 Net Income (Loss) $6,399,000 $ (514,000) Diluted Net Income (Loss) Per Common Share: Net Income (Loss) Per Share $2.15 $(.18) For the Three Months Ended June 30, BASIC: 2002 2001 Weighted Average Common Shares Outstanding 2,979,190 2,979,190 Net Income (Loss) $ (199,000) $ (258,000) Basic Net Income (Loss) Per Common Share: Net Income (Loss) per share $(.07) $(.09) DILUTED: Weighted Average Common Shares Outstanding 2,979,190 2,979,190 Dilutive Stock Options Based Upon the Treasury Stock Method - - 2,979,190 2,979,190 Net Income (Loss) $ (199,000) $ (258,000) Diluted Net Income (Loss) Per Common Share: Net Income (Loss) Per Share $(.07) $(.09)