Pro Forma Earnings Per Share-1997 and 1996 37 Exhibit 11.1 ALBEMARLE CORPORATION COMPUTATION OF PRO FORMA EARNINGS PER SHARE for the years ended December 31, 1997 and 1996 (In thousands except per share amounts) Pro Forma Pro Forma 1997 1996 --------- --------- BASIC EARNINGS PER SHARE Numerator: - --------- Net income after effect of applying SFAS No. 123 "Accounting for Stock Based Compensation" $79,394 $155,863 -------- --------- Denominator: - ----------- Average number of shares of common stock outstanding 55,164 58,353 -------- --------- Basic earnings per share $1.44 $2.67 -------- --------- -------- --------- DILUTED EARNINGS PER SHARE Numerator: - --------- Net income after effect of applying SFAS No. 123 "Accounting for Stock-Based Compensation" $79,394 $155,863 --------- --------- Denominator: - ----------- Average number of shares of common stock outstanding 55,164 58,353 --------- --------- Shares issuable upon the assumed exercise of outstanding stock options 504 489 --------- --------- Total shares 55,668 58,842 --------- --------- Diluted earnings per share $1.43 $2.65 --------- --------- --------- ---------