EXHIBIT 11.0 OVERLAND DATA, INC. COMPUTATION OF PER SHARE EARNINGS Three Months Ended September 30, ------------------------------ 1997 1996 ------------ ----------- Net income (loss). . . . . . . . . . . . . . . . . . . . . . . . . . $ 177,000 $ 325,000 ------------ ----------- ------------ ----------- Weighted average number of shares of common stock outstanding. . . . . . . . . . . . . . . . . . . . . 10,457,682 5,107,155 Weighted average number of shares of preferred stock outstanding . . . . . . . . . . . . . . . . . . . -- 2,336,573 Common stock equivalents from the issuance of options using the treasury stock method . . . . . . . . . . . . . . . . . . . . . . 524,844 498,260 Cheap stock effect . . . . . . . . . . . . . . . . . . . . . . . . . -- (8,333) Cheap stock adjustment . . . . . . . . . . . . . . . . . . . . . . . -- 203,540 ------------ ----------- Shares used in computing net income (loss) per share . . . . . . . . . . . . . . . . . . . . . 10,982,526 8,137,195 ------------ ----------- ------------ ----------- Net income (loss) per share. . . . . . . . . . . . . . . . . . . . . $ 0.02 $0.04 ------------ ----------- ------------ ----------- 13