1 EXHIBIT 11 SPIRE CORPORTION STATEMENT REGARDING COMPUTATION OF PER SHARE EARNINGS Nine Months Ended Seprtember 30, ------------------------------------ 1997 1996 ---------- ---------- Primary: - -------- Net income (loss) $1,576,897 $ (711,909) ========== ========== Weighted average number common shares outstanding 3,052,263 3,031,260 Add: additional common shares issued upon assumed exercise of common stock options 128,204 -- ---------- ---------- Weighted average common and common equivalent shares outstanding 3,180,467 3,031,260 ========== ========== Primary net income (loss) per share $ 0.50 $ (0.24) ========== ========== Fully Diluted: - -------------- Net income (loss) $1,576,897 $ (711,909) ========== ========== Weighted average number common shares outstanding 3,052,263 3,031,260 Add: additional common shares issued upon assuming exercise of common stock options 222,884 -- ---------- ---------- Weighted average common and common equivalent shares outstanding 3,275,147 3,031,260 ========== ========== Fully diluted net income (loss) per share $ 0.48 $ (0.24) ========== ==========