EXHIBIT 11 TOSCO CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (a) (Unaudited) (Thousands of Dollars, Except Per Share Data) Three Months Ended March 31, ----------------------------- 1997 1996 ----------- --------- Income before dividends on company-obligated, mandatorily redeemable, convertible preferred securities $6,085 $23,966 Dividends on company-obligated, mandatorily redeemable, convertible preferred securities, net of income tax benefit 2,522 - ----------- ---------- Net income $3,563 $23,966 =========== =========== PRIMARY EARNINGS PER SHARE Earnings used for computation of primary earnings per share $3,563 $23,966 ---------- ----------- Weighted average number of shares outstanding during the period 131,175,830 111,378,684 Assumed conversion of common share equivalents 4,514,952 2,473,728 ------------- ------------- Weighted average common and common equivalent shares used for computation of primary earnings per share 135,690,782 113,852,412 --------------- -------------- Primary earnings per common and common equivalent share $0.03 $0.21 ============== ============== FULLY DILUTED EARNINGS PER SHARE (b) Earning used for computation of fully diluted earnings per share $3,563 $23,966 ------------ ------------- Weighted average number of shares outstanding during the period 131,175,830 111,378,684 Assumed conversion of common share equivalents 4,514,952 2,850,582 -------------- --------------- Weighted average common and common equivalent shares used for computation of fully diluted earnings per share 135,690,782 114,229,266 -------------- --------------- Fully diluted earnings per common and common equivalent share $0.03 $0.21 =============== =============== (a) Earnings per share and weighted average shares outstanding reflect the 3-for-1 stock split declared and distributed in February 1997. (b) Conversion of the company-obligated, mandatorily redeemable, convertible preferred securities is not assumed at March 31, 1997 due to the anti-dilutive impact of the assumed conversion.