Exhibit 11 INTERNATIONAL PAPER COMPANY STATEMENT OF COMPUTATION OF PER SHARE EARNINGS (Unaudited) (In millions, except per share amounts) Three Months Ended Nine Months Ended September 30, September 30, --------------------- --------------------- 2003 2002 2003 2002 ---- ---- ---- ---- Earnings before accounting changes $ 122 $ 145 $ 264 $ 425 Cumulative effect of accounting changes - - (10) (1,175) ------ ------ ------ ------- Net earnings (loss) 122 145 254 (750) Effect of dilutive securities - - - - ------ ------ ------ ------- Net earnings (loss) - assuming dilution $ 122 $ 145 $ 254 $ (750) ====== ====== ====== ======= Average common shares outstanding 479.8 481.1 479.3 482.0 Effect of dilutive securities Stock options 2.0 1.2 1.4 1.8 ------ ------ ------ ------- Average common shares outstanding - assuming dilution 481.8 482.3 480.7 483.8 ====== ====== ====== ======= Earnings per common share before accounting changes $ 0.25 $ 0.30 $ 0.55 $ 0.88 Cumulative effect of accounting changes - - (0.02) (2.44) ------ ------ ------ ------- Net earnings (loss) per common share $ 0.25 $ 0.30 $ 0.53 $ (1.56) ====== ====== ====== ======= Net earnings (loss) per common share - assuming dilution $ 0.25 $ 0.30 $ 0.53 $ (1.56) ====== ====== ====== ======= Note: If an amount does not appear in the above table, the security was antidilutive for the period presented. Stock options are antidilutive in periods when net losses are recorded.