EXHIBIT 11 OVERLAND DATA, INC. COMPUTATION OF PER SHARE EARNINGS Three Months Ended Nine Months Ended March 31, March 31, -------------------------- -------------------------- 1998 1997 1998 1997 ---------- ----------- ------------ ------------ BASIC EPS COMPUTATION Net income ...................................... $ 501,000 $ 797,000 $ 1,467,000 $ 2,165,000 ---------- ----------- ------------ ------------ ---------- ----------- ------------ ------------ Weighted average number of shares of common stock outstanding......................... 10,542,000 7,457,000 10,512,000 5,927,000 ---------- ----------- ------------ ------------ Total............................................ 10,542,000 7,457,000 10,512,000 5,927,000 ---------- ----------- ------------ ------------ ---------- ----------- ------------ ------------ Basic earnings per share......................... $ 0.05 $ 0.11 $ 0.14 $ 0.37 ---------- ----------- ------------ ------------ ---------- ----------- ------------ ------------ Three Months Ended Nine Months Ended March 31, March 31, -------------------------- -------------------------- 1998 1997 1998 1997 ---------- ----------- ------------ ------------ DILUTED EPS COMPUTATION Net income ..................................... $ 501,000 $ 797,000 $ 1,467,000 $ 2,165,000 ---------- ----------- ------------ ------------ ---------- ----------- ------------ ------------ Weighted average number of shares of common stock outstanding........................ 10,542,000 7,457,000 10,512,000 5,927,000 Weighted average number of shares of preferred stock outstanding..................... - 1,247,000 - 1,972,000 Common stock equivalents from the issuance of options and the employee stock purchase plan using the treasury stock method....................... 448,000 655,000 475,000 616,000 Cheap stock adjustment.......................... - - - 131,000 ---------- ----------- ------------ ------------ Total........................................... 10,990,000 9,359,000 10,987,000 8,646,000 ---------- ----------- ------------ ------------ ---------- ----------- ------------ ------------ Diluted earnings per share...................... $ 0.05 $ 0.09 $ 0.13 $ 0.25 ---------- ----------- ------------ ------------ ---------- ----------- ------------ ------------