EXHIBIT 11 CROWN CENTRAL PETROLEUM CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (thousands of dollars except per share amounts) Three Months Ended Nine Months September 30 Ended September 30 1997 1997 1996 1996 Primary and Fully Diluted Earnings Per Share Net income (loss) applicable to $11,265 $(3,636 $ $ common shares ) 19,896 (13,634 ) Shares outstanding as reported at the beginning of the period 9,995,1 9,988, 80 989 9,983,180 9,952,950 Restricted shares held by the Company at the beginning or the period (260,700 (264,750 ) ) (249,700 (255,300 ) ) Weighted average effect of 9,306 shares of common stock issued in September 1997 3,102 1,034 Weighted average effect of 9,306 shares of common stock issued in August 1997 6,204 2,068 Weighted average effect of 1,840 shares of common stock issued in July 1997 1,840 614 Weighted average effect of 1,000 shares of common stock issued in June 1997 444 Weighted average effect of 8,139 shares of common stock issued in July 1996 8,139 2,713 Weighted average effect of 1,000 shares of common stock issued in June 1996 444 Weighted average effect of 4,730 share of common stock issued in May 1996 2,628 Weighted average effect of 13,559 share of common stock issued in April 1996 9,039 Weighted average effect of 7,300 shares of common stock issued in March 1996 5,678 Weighted average number of common shares outstanding, at period end 9,745,6 9,732, 26 378 9,737,640 9,718,152 Net income (loss) per common $ 1.16 $ (.37) $ $ share 2.04 (1.40 )