SYNBIOTICS CORPORATION EXHIBIT 11.1 ------------ COMPUTATION OF EARNINGS PER SHARE - ------------------------------------------------------------------------------- THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ----------------------- ----------------------- 1996 1995 1996 1995 ---------- ---------- ---------- ---------- PRIMARY EARNINGS PER SHARE: Net income per statement of operations $1,519,000 $ 980,000 $3,169,000 $1,734,000 ========== ========== ========== ========== Weighted average number of shares outstanding 6,028,000 5,806,000 5,968,000 5,805,000 ========== ========== ========== ========== Primary earnings per share $ .25 $ .17 $ .53 $ .30 ========== ========== ========== ========== FULLY DILUTED EARNINGS PER SHARE: Net income per statement of operations $1,519,000 $ 980,000 $3,169,000 $1,734,000 ========== ========== ========== ========== 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 6,028,000 5,806,000 5,968,000 5,805,000 Add-effect of outstanding options (as determined by the application of the treasury method) 38,000 5,000 26,000 4,000 ---------- ---------- ---------- ---------- Weighted average number of shares, as adjusted 6,066,000 5,811,000 5,994,000 5,809,000 ========== ========== ========== ========== Fully diluted earnings per share $ .25 $ .17 $ .53 $ .30 ========== ========== ========== ========== 1