EXHIBIT 11 CHATTEM, INC. AND SUBSIDIARIES STATEMENT REGARDING COMPUTATION OF PER SHARE EARNINGS FOR THE YEARS ENDED NOVEMBER 30, 1999, 1998 AND 1997 (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) 1999 1998 1997 ---------- ---------- ------------ NET INCOME: Income before extraordinary loss . . . . . . $ 22,541 $ 18,128 $ 7,016 Extraordinary loss . . . . . . . . . . . . . (2,385) (2,859) (1,131) ---------- ---------- --------- Net income . . . . . . . . . . . . . $ 20,156 $ 15,269 $ 5,885 ========== ========== ========= COMMON SHARES: Weighted average number outstanding . . . . 9,747 9,374 8,793 Number issued upon assumed exercise of outstanding stock options and stock warrants . . . . . . . . . . . . . . . . . 277 361 330 ---------- ---------- --------- Weighted average number of common and common equivalent shares outstanding. . . 10,024 9,735 9,123 ========== ========== ========= NET INCOME (LOSS) PER COMMON SHARE: Basic: Income before extraordinary loss . . . . . $ 2.31 $ 1.93 $ .80 Extraordinary loss . . . . . . . . . . . . (.24) (.30) (.13) ---------- ---------- --------- Total basic . . . . . . . . . . . . . $ 2.07 $ 1.63 $ .67 ========== ========== ========= Diluted: Income before extraordinary loss . . . . . $ 2.25 $ 1.86 $ .77 Extraordinary loss . . . . . . . . . . . . (.24) (.29) (.12) ---------- ---------- --------- Total diluted . . . . . . . . . . . . $ 2.01 $ 1.57 $ .65 ========== ========== ========= 28