EXHIBIT 11 CHATTEM, INC. AND SUBSIDIARIES STATEMENT REGARDING COMPUTATION OF PER SHARE EARNINGS (UNAUDITED AND IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) FOR THE THREE MONTHS ENDED FOR THE SIX MONTHS ENDED MAY 31, MAY 31, -------------------------- ------------------------ 1998 1997 1998 1997 ---------- ----------- ---------- --------- NET INCOME: Income before extraordinary loss............ $10,069 $3,057 $10,678 $3,193 Extraordinary loss.......................... (1,901) - (1,901) - ---------- ----------- ---------- --------- Net income................................ $ 8,168 $3,057 $ 8,777 $3,193 ---------- ----------- ---------- --------- COMMON SHARES: Weighted average number outstanding......... 9,370 8,613 9,149 8,608 Number issued upon assumed exercise of outstanding stock options and stock warrants.................................. 459 239 399 222 ---------- ----------- ---------- --------- Weighted average number of common and common equivalent shares outstanding............................... 9,829 8,852 9,548 8,830 ---------- ----------- ---------- --------- NET INCOME PER COMMON SHARE: Basic: Income before extraordinary loss.......... $ 1.07 $ 0.35 $ 1.17 $ 0.37 Extraordinary loss........................ (.20) - (.21) - ---------- ----------- ---------- --------- Total basic............................. $ 0.87 $ 0.35 $ 0.96 $ 0.37 ---------- ----------- ---------- --------- ---------- ----------- ---------- --------- Diluted: Income before extraordinary loss.......... $ 1.02 $ 0.35 $ 1.12 $ 0.36 Extraordinary loss........................ (.19) - (.20) - ---------- ----------- ---------- --------- Total diluted........................... $ 0.83 $ 0.35 $ 0.92 $ 0.36 ---------- ----------- ---------- --------- ---------- ----------- ---------- ---------