EXHIBIT 11 SWIFT TRANSPORTATION CO., INC. & SUBSIDIARIES Schedule of Computation of Net Earnings Per Share (In thousands, except per share amounts) Three months Six months ended June 30, ended June 30, 1998 1997 1998 1997 ------- ------- ------- ------- Net earnings $14,036 $10,556 $23,448 $16,779 ======= ======= ======= ======= Weighted average shares: Common shares outstanding 42,723 42,302 42,612 42,111 Common equivalent shares issuable upon exercise of employee stock options (1) 815 924 875 993 ------- ------- ------- ------- Total weighted average shares - diluted 43,538 43,226 43,487 43,104 ======= ======= ======= ======= Basic earnings per share $ .33 $ .25 $ .55 $ .40 ======= ======= ======= ======= Diluted earnings per share $ .32 $ .24 $ .54 $ .39 ======= ======= ======= ======= Note: (1) Amount calculated using the treasury stock method and fair market values. 18