PAGE 113 EXHIBIT 11 Page 1 of 4 NORFOLK SOUTHERN CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (In millions except per share amounts) 1993 1992 1991 ---- ---- ---- Computation for Statements of Income - ------------------------------------ Income before cumulative effects of changes in accounting principles $ 548.7 $ 557.7 $ 29.7* ------- ------- ------- Cumulative effects of changes in accounting principles 223.3 -- -- ------- ------- ------- Weighted average number of shares outstanding 139.4 141.5 147.8 ------- ------- ------- Primary earnings per share: Income before accounting changes $ 3.94 $ 3.94 $ 0.20 Cumulative effects of accounting changes 1.60 -- -- ------- ------- ------- Net income $ 5.54 $ 3.94 $ 0.20 ======= ======= ======= Additional Primary Computation - ------------------------------ Income before cumulative effects of changes in accounting principles $ 548.7 $ 557.7 $ 29.7 ------- ------- ------- Cumulative effects of changes in accounting principles 223.3 -- -- Adjustment to weighted average number of shares outstanding: Weighted average number of shares outstanding per primary computation above 139.4 141.5 147.8 Dilutive effect of outstanding options, stock appreciation rights (SARs) and performance share units (PSUs) (as determined by the application of the treasury stock method) (1) 1.2 1.1 1.0 ------- ------- ------- Weighted average number of shares outstanding, as adjusted 140.6 142.6 148.8 ======= ======= ======= * Included in 1991 results is a special charge that increased transportation operating expenses by $680 million (see Note 15 of Notes to Consolidated Financial Statements on page 85). PAGE 114 EXHIBIT 11 Page 2 of 4 NORFOLK SOUTHERN CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (In millions except per share amounts) 1993 1992 1991 ---- ---- ---- Primary earnings per share, as adjusted (2): Income before accounting changes $ 3.90 $ 3.91 $ 0.20 Cumulative effects of accounting changes 1.59 -- -- ------- ------- ------- Net income $ 5.49 $ 3.91 $ 0.20 ======= ======= ======= (1) See Note 13 of Notes to Consolidated Financial Statements on page 83 for a description of the Long-Term Incentive Plan. (2) These calculations are submitted in accordance with Regulation S-K item 601(b)(11) although not required by footnote 2 to paragraph 14 of APB Opinion No. 15 because they result in dilution of less than 3 percent. PAGE 115 EXHIBIT 11 Page 3 of 4 NORFOLK SOUTHERN CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (In millions except per share amounts) 1993 1992 1991 ---- ---- ---- Fully Diluted Computation - ------------------------- Income before cumulative effects of changes in accounting principles, per primary computation $ 548.7 $ 557.7 $ 29.7 Adjustment to increase earnings to requisite level to earn maximum PSUs, net of tax effect 162.1 167.9 658.4 ------- ------- ------- Income before cumulative effects, as adjusted 710.8 725.6 688.1 Cumulative effects of changes in accounting principles 223.3 -- -- ------- ------- ------- Net income, as adjusted $ 934.1 $ 725.6 $ 688.1 ======= ======= ======= Adjustment to weighted average number of shares outstanding, as adjusted for additional primary calculation: Weighted average number of shares outstanding, as adjusted per additional primary computation on page 1 140.6 142.6 148.8 Additional dilutive effect of outstanding options and SARs (as determined by the application of the treasury stock method using period end market price) 0.2 -- 0.2 Additional shares issuable at maximum level for PSUs 0.2 0.2 0.2 ------- ------- ------- Weighted average number of shares, as adjusted 141.0 142.8 149.2 ------- ------- ------- PAGE 116 EXHIBIT 11 Page 4 of 4 NORFOLK SOUTHERN CORPORATION AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (In millions except per share amounts) 1993 1992 1991 ---- ---- ---- Fully diluted earnings per share (3): Income before accounting changes $ 5.04 $ 5.08 $ 4.61 Cumulative effects of accounting changes 1.58 -- -- ------- ------- ------- Net income $ 6.62 $ 5.08 $ 4.61 ======= ======= ======= (3) These calculations are submitted in accordance with Regulation S-K item 601(b)(11) although they are contrary to paragraph 40 of APB Opinion No. 15 because they produce an anti-dilutive result.