EXHIBIT 11 DETAIL COMPUTATION OF EARNINGS PER SHARE Digi International Exhibit 11 Detail Computation of Earnings Per Share Years Ended September 30: --------------------------------------- 1994 1995 1996 ---- ---- ---- PER SHARE DATA Net income $16,701,092 $19,331,093 $ 9,300,220 ----------- ----------- ----------- ----------- ----------- ----------- Net income per common and common equivalent share: Primary $1.15 $1.38 $0.69 ----- ----- ----- ----- ----- ----- Fully diluted $1.15 $1.38 $0.67 ----- ----- ----- ----- ----- ----- WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES Primary: Weighted average of common shares outstanding 14,262,206 13,656,150 13,323,564 Dilutive stock options, using treasury stock method 248,363 400,959 199,341 ----------- ----------- ----------- 14,510,569 14,057,109 13,522,905 ----------- ----------- ----------- ----------- ----------- ----------- Fully diluted: Weighted average of common shares outstanding 14,262,206 13,656,150 13,323,564 Dilutive stock options, using treasury stock method 245,690 611,033 557,583 ----------- ----------- ----------- 14,507,896 14,267,183 13,881,147 ----------- ----------- ----------- ----------- ----------- ----------- NOTE: The calculation of fully diluted earnings per share is submitted in compliance with Regulation S-K Item 601(b)(11) although not required by footnote 2 to paragraph 14 of APB Opinion No. 15 because it results in less than 3% dilution. Page 1