EXHIBIT 11 THE LANGER BIOMECHANICS GROUP, INC. AND SUBSIDIARIES COMPUTATION OF PER SHARE AMOUNTS For the three and six months ended August 29, 1998 and August 30, 1997 Three Months Six Months Aug. 29, 1998 Aug. 30, 1997 Aug. 29, 1998 Aug. 30, 1997 ------------- ------------- ------------- ------------- Basic: Net income $ 317,264 $ 26,111 $ 433,414 $ 68,724 ----------- --------- --------- --------- Number of common shares 2,586,281 2,584,281 2,585,281 2,584,281 Weighted number of shares issued during the period 0 0 907 0 --------- --------- --------- --------- Weighted average number of common and common equivalent shares 2,586,281 2,584,281 2,586,188 2,584,281 --------- --------- --------- --------- Net income per share: Basic $ 0.12 $ 0.01 $ 0.17 $ 0.03 --------- --------- --------- ---------- --------- --------- --------- ---------- Diluted: Net income $ 317,264 $ 26,111 $ 433,414 $ 68,724 --------- --------- --------- --------- Weighted average number of common shares 2,586,281 2,584,281 2,586,188 2,584,281 Assumed number of shares issued from common share equivalents 48,358 91,729 53,589 91,729 --------- --------- --------- --------- Weighted average number of common and common equivalent shares 2,634,639 2,676,010 2,639,777 2,676,010 --------- --------- --------- --------- Net income per share: Diluted $ 0.12 $ 0.01 $ 0.16 $ 0.03 --------- --------- --------- --------- --------- --------- --------- ---------