EXHIBIT 11.0 BTU INTERNATIONAL, INC. CALCULATION OF NET INCOME PER COMMON SHARE (Dollars in Thousands, except per share data) FOR THE YEAR ENDED DECEMBER 31, ------------------------------- 2002 2001 2000 ---- ---- ---- Net (loss) income ............................ $ (7,072) $ (3,747) $ 5,422 Net (loss) income applicable to common stockholders ........................ $ (7,072) $ (3,747) $ 5,422 =========== =========== ========== Weighted average number of shares outstanding: Basic Shares .............................. 6,886,240 6,928,054 6,875,793 Effect of Dilutive Options ................ 0 0 402,107 ----------- ----------- ---------- Diluted Shares ............................ 6,886,240 6,928,054 7,277,900 =========== =========== ========== Earnings (loss) Per Share: Basic ..................................... $ (1.03) $ (0.54) $ 0.79 ----------- ----------- ---------- Diluted ................................... $ (1.03) $ (0.54) $ 0.74 ----------- ----------- ---------- 37