EXHIBIT 11 SWIFT TRANSPORTATION CO., INC. & SUBSIDIARIES Schedule of Computation of Net Earnings Per Share (in thousands, except per share amounts) Three months ended Six months ended June 30, June 30, ----------------- ----------------- 1999 1998 1999 1998 ---- ---- ---- ---- Net earnings $17,504 $14,036 $29,607 $23,448 ======= ======= ======= ======= Weighted average shares: Common shares outstanding 64,027 64,085 63,888 63,918 Common equivalent shares issuable upon exercise of employee stock options 1,145 1,222 1,274 1,313 ------- ------- ------- ------- Diluted weighted average shares 65,172 65,307 65,162 65,231 ======= ======= ======= ======= Basic earnings per share $ .27 $ .22 $ .46 $ .37 ======= ======= ======= ======= Diluted earnings per share $ .27 $ .21 $ .45 $ .36 ======= ======= ======= ======= 18