Boise Cascade Corporation Computation of Per Share Earnings Three Months Ended March 31 1997 1996 (expressed in thousands, except per share amounts) Net income (loss) as reported $(15,210) $ 25,510 Preferred dividends (9,713) (9,849) Primary income (loss) (24,923) 15,661 Assumed conversions: Preferred dividends eliminated 7,010 3,739 Supplemental ESOP contribution (3,079) (3,195) Fully diluted income (loss) $(20,992) $ 16,205 Average number of common shares Primary 48,512 48,400 Fully diluted 60,427 53,403 Net income (loss) per common share Primary $ (.51) $ .32 Fully diluted $ (.35)(1) $ .30 (1) Because the computation of fully diluted loss per common share was antidilutive, the fully diluted loss per common share reported for the three months ended March 31, 1997, was $.51.