EXHIBIT 11.1 RIMAGE CORPORATION AND SUBSIDIARIES COMPUTATION OF NET EARNINGS PER SHARE OF COMMON STOCK Basic net earnings per common share is determined by dividing net earnings by the weighted average number of shares of common stock outstanding, unless the result is anti-dilutive. Diluted net earnings per common share is determined by dividing net earnings by the weighted average number of shares of common stock and common share equivalents outstanding, unless the result is anti-dilutive. The following is a summary of the weighted average common shares outstanding and common share equivalents: Three months ended Nine months ended September 30, September 30, 1998 1997 1998 1997 ---------- ---------- ---------- ---------- Shares outstanding at beginning of period 3,159,871 3,084,500 3,091,302 3,084,500 Common stock issued in stock option exercise 77,128 5,335 145,697 5,335 ---------- ---------- ---------- ---------- Shares outstanding at end of period 3,236,999 3,089,835 3,236,999 3,089,835 ========== ========== ========== ========== Weighted average shares of common stock outstanding 3,218,632 3,085,701 3,151,921 3,084,905 ========== ========== ========== ========== Common stock equivalents 889,797 764,599 889,797 764,599 Weighted average shares of common stock equivalents 512,643 198,024 462,221 139,222 ========== ========== ========== ========== Weighted average shares of common stock and stock equivalents 3,731,275 3,283,725 3,614,142 3,224,127 ========== ========== ========== ========== Net earnings $1,672,724 $ 526,435 $3,723,734 $ 947,515 ========== ========== ========== ========== Basic net earnings per share $ 0.52 $ 0.17 $ 1.18 $ 0.31 ========== ========== ========== ========== Diluted net earnings per share $ 0.45 $ 0.16 $ 1.03 $ 0.29 ========== ========== ========== ==========