EXHIBIT 11 CHATTEM, INC. AND SUBSIDIARIES ------------------------------ STATEMENT REGARDING COMPUTATION OF PER SHARE EARNINGS ----------------------------------------------------- (In thousands, except per share amounts) FOR THE THREE MONTHS ENDED FEBRUARY 29, FEBRUARY 28, 2000 1999 --------- -------- NET INCOME: Income before extraordinary loss and change in accounting principle .................. $ 3,608 $ 3,577 Extraordinary loss ................................ -- (427) Change in accounting principle .................... (542) -- --------- -------- Net income ...................................... $ 3,066 $ 3,150 ========= ======== COMMON SHARES: Weighted average number outstanding ............... 9,693 9,712 Number issued upon assumed exercise of of outstanding stock options and stock warrants ........................................ 168 406 --------- -------- Weighted average number and dilutive potential number outstanding..................... 9,861 10,118 ========= ======== NET INCOME (LOSS) PER COMMON SHARE: Basic: Income before extraordinary loss and change in accounting principle................ $ .37 $ .37 Extraordinary loss ............................. -- (.04) Change in accounting principle ................. (.05) -- --------- -------- Total basic ................................ $ .32 $ .33 ========= ======== Diluted: Income before extraordinary loss and change in accounting principle ............... $ .37 $ .35 Extraordinary loss ............................. -- (.04) Change in accounting principle ................. (.06) -- --------- -------- Total diluted .............................. $ .31 $ .31 ========= ======== 24