EXHIBIT 11.1 ------------ SYNBIOTICS CORPORATION COMPUTATION OF EARNINGS (LOSS) PER SHARE - -------------------------------------------------------------------------------- THREE MONTHS ENDED NINE MONTHS ENDED SEPTEMBER 30, SEPTEMBER 30, ------------------------- -------------------------- 1996 1995 1996 1995 ----------- ----------- ---------- ------------ PRIMARY EARNINGS (LOSS) PER SHARE: Net income (loss) per statement of operations $ (395,000) $ (854,000) $2,773,000 $ 880,000 =========== =========== ========== ============ Weighted average number of shares outstanding 6,000,000 5,809,000 6,013,000 5,827,000 =========== =========== ========== ============ Primary earnings (loss) per share $ (.07) $ (.15) $ .46 $ .15 =========== =========== ========== ============ FULLY DILUTED EARNINGS (LOSS) PER SHARE:/(1)/ Net income (loss) per statement of operations $ (395,000) $ (854,000) $2,773,000 $ 880,000 =========== =========== ========== ============ Reconciliation of weighted average number of shares per primary computation above, to amount used for fully diluted computation: Weighted average number of shares outstanding, per primary computation 6,000,000 5,809,000 6,013,000 5,827,000 Add-effect of outstanding options (as determined by the application of the treasury method) 153,000 54,000 26,000 7,000 ----------- ----------- ---------- ------------ Weighted average number of shares, as adjusted 6,153,000 5,863,000 6,039,000 5,834,000 =========== =========== ========== ============ Fully diluted earnings (loss) per share $ (.06) $ (.15) $ .46 $ .15 =========== =========== ========== ============ - ----------------------------------- /(1)/ This computation is submitted, for the three months ended September 30, 1996 and 1995, in accordance with Regulation S-B Item 601(b)(11) although it is contrary to paragraph 40 of APB Opinion No. 15 because it produces an anti-dilutive result. -1-