1 EXHIBIT 11 Omnicare, Inc. and Subsidiary Companies Computation of Earnings Per Common Share* (in thousands, except per share data) For the years ended December 31, 1997 1996 1995 -------------------------------------------------- BASIC EARNINGS Net income $55,705 $43,450 $24,760 Other 5 (23) (28) --------------- ---------------- ---------------- Income available to common stockholders $55,710 $43,427 $24,732 =============== ================ ================ Shares Weighted average number of common shares outstanding 80,144 65,298 52,396 =============== ================ ================ Basic earnings per common share $ 0.70 $ 0.67 $ 0.47 =============== ================ ================ DILUTED EARNINGS Net income $55,705 $43,450 $24,760 Other 5 (23) (28) Aftertax interest expense related to 5-3/4% convertible subordinated debentures - 2,266 3,209 --------------- ---------------- ---------------- Diluted net income $55,710 $45,693 $27,941 =============== ================ ================ Shares Weighted average number of common shares outstanding 80,144 65,298 52,396 Additional shares assuming conversion of: Stock options and stock warrants 159 2,075 1,530 Convertible subordinated debentures - 7,949 11,148 --------------- ---------------- ---------------- Average common shares outstanding and equivalents as adjusted 80,303 75,322 65,074 =============== ================ ================ Diluted earnings per common share $ 0.69 $ 0.61 $ 0.43 =============== ================ ================ * The earnings per share data and related average number of shares outstanding has been restated with the Company's required adoption of Statement of Financial Accounting Standard No. 128, "Earnings per Share."