EXHIBIT 11 FIRST BELL BANCORP, INC. COMPUTATION OF PRIMARY EARNINGS PER SHARE FOR THE THREE MONTHS ENDED MARCH 31, 1997 (In Thousands, except per share amounts) (unaudited) Net income applicable to common stock $ 1,996 ======= EARNINGS PER SHARE Average number of shares of common stock outstanding 7,611 LESS: Weighted average unearned ESOP shares 627 ------- 6,984 ======= Earnings per share $ 0.29 =======