EXHIBIT 11 SWIFT TRANSPORTATION CO., INC. & SUBSIDIARIES Schedule of Computation of Net Earnings Per Share (in thousands, except per share amounts) Three months ended Nine months ended September 30, September 30, 1998 1997 1998 1997 ---- ---- ---- ---- Net earnings $15,644 $12,822 $39,092 $29,645 ======= ======= ======= ======= Weighted average shares: Common shares outstanding 42,688 42,368 42,638 42,197 Common equivalent shares issuable upon exercise of employee stock options 718 931 824 1,008 ------- ------- ------- ------- Diluted weighted average shares 43,406 43,299 43,462 43,205 ======= ======= ======= ======= Basic earnings per share $ .37 $ .30 $ .92 $ .70 ======= ======= ======= ======= Diluted earnings per share $ .36 $ .30 $ .90 $ .69 ======= ======= ======= =======