1 Exhibit 11 PENWEST, LTD. AND SUBSIDIARIES COMPUTATION OF PER-SHARE EARNINGS Year Ended August 31 1996 1995 1994 -------------------------------------- PRIMARY: Net income $5,052,000 $7,217,000 $6,120,000 ========== ========== ========== Weighted average number of shares outstanding 6,805,740 6,745,566 6,828,400 Net effect of diluted stock options 201,600 273,404 282,553 ---------- ---------- ---------- Weighted average common shares and equivalents outstanding 7,007,340 7,018,970 7,110,953 ========== ========== ========== Earnings per share: $ 0.72 $ 1.03 $ 0.86 ========== ========== ========== FULLY DILUTED: Net income $5,052,000 $7,217,000 $6,120,000 ========== ========== ========== Weighted average number of shares outstanding 6,805,740 6,745,566 6,828,400 Net effect of diluted stock options 194,352 279,333 251,616 ---------- ---------- ---------- Weighted average common shares and equivalents outstanding 7,000,092 7,024,899 7,080,016 ========== ========== ========== Earnings per share $ 0.72 $ 1.03 $ 0.86 ========== ========== ========== Page 40