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, ----------------- ----------------- 1999 1998 1999 1998 ------- ------- ------- ------- Net earnings $18,732 $15,644 $48,339 $39,092 ======= ======= ======= ======= Weighted average shares: Common shares outstanding 64,260 64,032 64,013 63,957 Common equivalent shares issuable upon exercise of employee stock options 1,211 1,077 1,240 1,236 ------- ------- ------- ------- Diluted weighted average shares 65,471 65,109 65,253 65,193 ====== ====== ====== ====== Basic earnings per share $ .29 $ .24 $ .76 $ .61 ======= ======= ======= ======= Diluted earnings per share $ .29 $ .24 $ .74 $ .60 ======= ======= ======= =======