EXHIBIT 11 GREASE MONKEY HOLDING CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER COMMON SHARE (unaudited) Quarters Ended March 31, ------------------------ 1997 1996 ---------- --------- PRIMARY EARNINGS PER SHARE Net income (loss) $ (476,945) (122,040) Dividends on preferred stock (30,915) (31,303) ---------- --------- Net income (loss) applicable to common stock $ (507,860) (153,343) ---------- --------- ---------- --------- Common shares outstanding 4,592,552 4,349,689 Effect of using weighted average common and common equivalent shares outstanding (54,729) (4,730) Effect of shares issuable under common stock warrants using the treasury stock method * * Effect of shares issuable under stock options using the treasury stock method * * ---------- --------- Shares used in computing primary earnings per share 4,537,823 4,344,959 ---------- --------- ---------- --------- Primary earnings (loss) per common share $ (0.11) (0.04) ---------- --------- ---------- --------- FULLY DILUTED EARNINGS PER SHARE Net income (loss) $ (476,945) (122,040) Dividends on preferred stock (30,915) (31,303) ---------- --------- Net income (loss) as adjusted $ (507,860) (153,343) ---------- --------- ---------- --------- Shares used in computing primary earnings per share 4,537,823 4,344,959 Effect of shares issuable upon conversion of preferred stock * * ---------- --------- Shares used in computing fully diluted earnings per share 4,537,823 4,344,959 ---------- --------- ---------- --------- Fully diluted earnings (loss) per common share $ (0.11) (0.04) ---------- --------- ---------- --------- * Antidilutive