EXHIBIT 11 STONE CONTAINER CORPORATION COMPUTATION OF BASIC AND DILUTED NET INCOME (LOSS) PER SHARE (in millions, except per share) YEAR ENDED DECEMBER 31, ------------------------------- 1997 1996 1995 --------- --------- --------- BASIC EARNINGS PER SHARE Shares of Common Stock: Weighted average number of common shares outstanding.......................................... 99.3 99.2 93.9 --------- --------- --------- Basic Weighted Average Shares Outstanding....................................................... 99.3 99.2 93.9 --------- --------- --------- --------- --------- --------- Net Income (Loss)............................................................................... $ (417.7) $ (126.2) $ 255.5 Less: Series E Cumulative Convertible Exchangeable Preferred Stock dividend..................... (8.1) (8.1) (8.1) --------- --------- --------- Net income (loss) used in computing basic net income (loss) per common share.................... $ (425.8) $ (134.3) $ 247.4 --------- --------- --------- --------- --------- --------- Basic Earnings Per Share........................................................................ $ (4.29) $ (1.35) $ 2.63 --------- --------- --------- --------- --------- --------- DILUTED EARNINGS PER SHARE Shares of Common Stock: Weighted average number of common shares outstanding.......................................... 99.3 99.2 93.9 Dilutive effect of options and warrants....................................................... -- .2 .2 Addition from assumed conversion of 8.875% convertible senior subordinated notes.............. 5.1 5.2 15.2 Addition from assumed conversion of 6.75% convertible subordinated debentures................. 1.3 1.3 2.0 Addition from assumed conversion of Series E Cumulative Convertible Exchangeable Preferred Stock........................................................................................ 3.4 3.4 3.4 --------- --------- --------- Diluted Weighted Average Shares Outstanding................................................... 109.1 109.3 114.7 --------- --------- --------- --------- --------- --------- Net Income (Loss)............................................................................. $ (417.7) $ (126.2) $ 255.5 Less: Series E Cumulative Convertible Exchangeable Preferred Stock dividend................... (8.1) (8.1) (8.1) Income adjustment associated with assumed conversion of Stone-Consolidated Corporation 8% convertible subordinated debentures -- -- (10.6) Add back: Interest on 8.875% convertible senior subordinated notes.............................. 3.2 3.2 9.5 Interest on 6.75% convertible subordinated debentures................................. 1.9 1.9 2.8 Series E Cumulative Convertible Exchangeable Preferred Stock dividend................. 8.1 8.1 8.1 --------- --------- --------- Net income (loss) used in computing diluted net income (loss) per common share.................. $ (412.6) $ (121.1) $ 257.2 --------- --------- --------- --------- --------- --------- Diluted Earnings Per Share (A)................................................................ $ (3.78) $ (1.11) $ 2.24 --------- --------- --------- --------- --------- --------- - --------- (A) Diluted Earnings per share for 1997 and 1996 are different from the consolidated financial statements because amounts are anti-dilutive. 56